Patent Application
20120134728
This application is based on and claims the benefit of priority from Japanese Patent Application No. 2010-267773, filed on 30 Nov. 2010, the content of which is incorporated herein by reference.
1. Field of the Disclosure
The present Disclosure relates to an image forming apparatus and a post-processing device.
2. Related Art
Conventionally, an image forming apparatus is known that includes a post-processing device in addition to an image forming main body device.
Such an image forming apparatus is configured by connecting a post-processing unit as a (optional) post-processing device to the image forming main body device.
In addition, depending on a position of the paper ejection portion formed in the image forming main body device, the image forming apparatus may have a relay unit that connects between the paper ejection portion and the post-processing unit (Related Art 1).
However, in Related Art 1, the relay unit and the post-processing unit are supplied with power from the image forming main body device.
In this case, the image forming main body device must have a power supply unit for supplying power to a driving unit such as motor included in the relay unit and the post-processing unit.
Here, since the relay unit and the post-processing unit are optional, these are not necessarily connected to the image forming main body device.
As a result, if the power processing unit for supplying power to optional devices is disposed in the image forming main body device, the price of the image forming main body device may be unnecessarily high.
An objective of the present disclosure is to provide an image forming apparatus having an image forming main body device and a post-processing device, in which a power unit for supplying power necessary for driving the post-processing device is provided separately from the image forming main body device. Another objective of the present invention is to provide an optional device having a power unit for supplying power necessary for driving the post-processing device.
The present disclosure relates to an image forming apparatus including: a main body device that forms an image on a target material, the main body device including a case member that constitutes an outer shape thereof, a storage unit that stores the target material and is attached to the case member so as to be insertable and removable, a main power supply unit to which power of a first voltage supplied from an external power source is input and which can output power of the first voltage, an image forming unit that is driven by the power supplied from the main power supply unit and that forms an image on the target material, a main body ejection portion that ejects the target material on which the image is formed by the image forming unit, to the outside of the case member, and a main body feeder that feeds the target material stored in the storage unit to the image forming unit and feeds the target material on which the image is formed by the image forming unit to the main body ejection portion, and a post-processing device attached to the main body device, the post-processing device including a supporting unit that is connected to the main body device, a power unit attached to the supporting unit and supplied with the power of the first voltage from the main power supply unit, the power unit outputting the power thus supplied after a transformation process to a second voltage, and a post-processing unit attached to the supporting unit so as to be attachable and removable, that performs a predetermined post-process on the target material ejected from the main body ejection portion.
The present disclosure relates to a post-processing device in an image forming apparatus, the image forming apparatus including: a main body device that forms an image on a target material, the main body device including a case member that constitutes an outer shape thereof, a storage unit that stores the target material and is attached to the case member so as to be insertable and removable, a main power supply unit to which power of a first voltage supplied from an external power source is input and which can output power of the first voltage, an image forming unit that is driven by the power supplied from the main power supply unit and that forms an image on the target material, a main body ejection portion that ejects the target material on which the image is formed by the image forming unit, to the outside of the case member, and a main body feeder that feeds the target material stored in the storage unit to the image forming unit and feeds the target material on which the image is formed by the image forming unit to the main body ejection portion; and the post-processing device being attached to the main body device, in an image forming apparatus, the post-processing device including a supporting unit that is connected to the main body device, a power unit attached to the supporting unit and supplied with the power of the first voltage from the main power supply unit, the power unit outputting the power thus supplied after a transformation process to a second voltage, and a post-processing unit attached to the supporting unit so as to be attachable and removable, that performs a predetermined post-process on the target material ejected from the main body ejection portion.
Embodiments of the image forming apparatus according to the present disclosure are described hereinafter with reference to the drawings.
A portion encircled by a dotted line in
As shown in
Here, as shown in
In the present embodiment, the post-processing device includes the relay unit 500, the supporting unit 600, the power unit 620 and the post-processing unit 630.
In addition, as shown in
The main power supply unit 400 is connected to an external power source, is supplied with power of a first voltage, performs a transformation process and the like, and feeds power to various driving units and the image reading device 300 that are provided by standard in the main body device M.
The main power supply unit 400 also includes a first voltage output connector 410 that can supply power of the first voltage from the external power source to the power unit 620.
The power unit 620 (described later) transforms the power supplied from the first voltage output connector 410 and supplies the power thus transformed to the relay unit 500 and the post-processing unit 630 that are optionally provided in the main body device M.
Configuration of the relay unit 500, the supporting unit 600, the power unit 620 and the post-processing unit 630, and power supply to the relay unit 500 and the post-processing unit 630 are described in detail after a description of the main body device M.
As shown in
The image reading apparatus 300 reads an image of an original and outputs image information, which is information relating to the image thus read, to the main body device M (image forming unit).
The main body device M forms a toner image on paper T, as a sheet-shaped material, based on the image information transmitted from the image reading device 300.
It should be noted that, in a description of the copy machine 1, a sub-scanning direction X shown in
The perpendicular direction Z of the copy machine 1 is orthogonal to the sub-scanning direction X and the main scanning direction Y.
Firstly, the image reading apparatus 300 will be described with reference to
As illustrated in
The reader unit 301 includes a housing 306 and a first reader surface 302A and a second reader surface 302B that are disposed on an upper side of the housing 306.
In addition, the reader unit 301 includes an illumination portion 340 including a light source disposed in an internal space 304 of the housing 306, a plurality of mirrors 321, 322, and 323, a first frame body 311 and a second frame body 312 that move in the sub-scanning direction X, an imaging lens 357, a CCD 358 as a reading means, and a CCD substrate 361 that performs a predetermined process on image information read by the CCD 358 and outputs the image information to the main body device M.
The illumination portion 340 and the mirror 321 are housed in the first frame body 311.
The second mirror 322 and the third mirror 323 are housed in the second frame body 312.
The original feed unit 70 is connected with the reader unit 301 by a connecting part (not illustrated) so as to be openable and closable.
The original feed unit 70 includes an original mounting part 71 on an upper side, and a feed roller (not illustrated) in the inside thereof.
The original feed unit 70 includes the function of protecting the first reader surface 302A and the second reader surface 302B of the reader unit 301.
The first reader surface 302A is a reader surface used when reading an original G fed by the original feed unit 70.
The first reader surface 302A is formed along an upper surface of a first contact glass 335A on which the original G is fed.
The first reader surface 302A is positioned in the vicinity of a left lateral face of the housing 306.
This position shown in
The second reader surface 302B is a reader surface used when reading an original G without use of the original feed unit 70.
The second reader surface 302B is formed along an upper surface of a second contact glass 335B on which the original G is placed.
The second reader surface 302B is disposed more to the right than the first reader surface 302B, and spans the majority of the sub-scanning direction X in the reader unit 301.
The first reader surface 302A and the second reader surface 302B extend in a direction orthogonal to the sub-scanning direction X and the main scanning direction Y.
The original G fed by the original feed unit 70 is mounted on the original mounting part 71 for reading.
The original G mounted on the original mounting part 71 is fed to the first reader surface 302A of the reader unit 301 by the feeding roller provided in an inner part of the original feed unit 70.
In this case, the first frame body 311 and the second frame body 312 are located in the first reading position and not moved.
The image formed on the front surface of the original G is read by the CCD 358 by slidingly feeding the original G on the first reader surface 302A by the original feed unit 70.
When the original feed unit 70 is in an opened state, the original G is mounted on the second reader surface 302B.
In this case, the first frame body 311 and the second frame body 312 move in the sub-scanning direction X while maintaining a length of a light path H (described later) constant.
As a result, an image of the original G placed on the second reader surface 302E is read.
In the internal space 304 of the housing 306, the plurality of mirrors 321, 322 and 323 forms a light path H so that light from the original G is incident upon the imaging lens 357.
In addition, since the first frame body 311 moves in a sub-scanning direction X at a predetermined speed A while the second frame body 312 moves in the sub-scanning direction X at a predetermined speed A/2, the length of the light path H is kept constant even while reading an image.
Next, components of the main body device M are described with reference to
The main body device M includes: an image forming unit GK that forms a toner image on paper T as a sheet-shaped target object based on image information transmitted from the image reading device 300; and a paper feeding/ejection portion KH that feeds the paper T to the image forming unit GK and ejects the paper T on which the toner image is formed.
An external shape of the main body device M is composed of a case member BD as a housing.
As shown in
As shown in
It should be noted that, the paper path L is an assembly of a first paper path L1, a second paper path L2, a third paper path L3, a manual paper path La, a reverse paper path Lb, and a fourth paper path L4.
Components of the image forming unit GK and the paper feeding/ejection portion KH are described in detail hereinafter with reference to
First, a description is provided for the image forming unit GK.
In the image forming unit GK, performed on a surface of the photoreceptor drums 2a, 2b, 2c and 2d are: charging by the charging portions 10a, 10b, 10c and 10d; exposure by the laser scanner units 4a, 4b, 4c and 4d; development by the developing units 16a, 16b, 16c and 16d; primary transfer by the intermediate transfer belt 7 and the primary transfer rollers 37a, 37b, 37c and 37d; static elimination by the static eliminators 12a, 12b, 12c and 12d; and cleaning by the drum cleaning portions 11a, 11b, 11c and 11d, from an upstream side to a downstream side.
In addition, secondary transfer by the intermediate transfer belt 7, the secondary transfer roller 8 and the opposing roller 18, and fixation by the fusing unit 9 are performed in the image forming unit GK.
Each of the photoreceptor drums 2a, 2b, 2c, and 2d is composed of a cylindrically shaped member and function as a photoreceptor and an image supporting body.
Each of the photoreceptor drums 2a, 2b, 2c, and 2d is disposed so as to be rotatable in a direction of an arrow, about a rotational axis that extends in a direction orthogonal to a direction of movement of the intermediate transfer belt 7.
An electrostatic latent image can be formed on a surface of each of the photoreceptor drums 2a, 2b, 2c, and 2d.
The charging portions 10a, 10b, 10c, and 10d are disposed so as to face a surface of the photoreceptor drums 2a, 2b, 2c, and 2d, respectively.
The charging portions 10a, 10b, 10c, and 10d uniformly negatively charge (negative polarity) or positively charge (positive polarity) the surface of the photoreceptor drums 2a, 2b, 2c, and 2d, respectively.
Each of the laser scanner units 4a, 4b, 4c, and 4d, which functions as an exposure unit, is disposed to be spaced apart from a surface of each of the photoreceptor drums 2a, 2b, 2c, and 2d.
Each of the laser scanner units 4a, 4b, 4c, and 4d is configured to include a laser light source, a polygonal mirror, a polygonal mirror driving motor and the like, which are not illustrated.
Each of laser scanner units 4a, 4b, 4c, 4d scan and expose the front surface respectively of the photoreceptor drums 2a, 2b, 2c, 2d based on the image information related to the image read by the reader unit 301.
An electric charge of an exposed part of the surface of each of the photoreceptor drums 2a, 2b, 2c, and 2d is removed, which are scanned and exposed by the laser scanner units 4a, 4b, 4c, and 4d, respectively.
In this way, an electrostatic latent image is formed on the surface of each of the photoreceptor drums 2a, 2b, 2c, and 2d.
The developing units 16a, 16b, 16c, and 16d are disposed to correspond to the photoreceptor drums 2a, 2b, 2c, and 2d, respectively, facing corresponding surfaces of the photoreceptor drums 2a, 2b, 2c, and 2d.
The developing units 16a, 16b, 16c, and 16d each form a toner image of each color on the surface of the photoreceptor drums 2a, 2b, 2c, and 2d by depositing toner of each color on the electrostatic latent image formed on the surface of each of the photoreceptor drums 2a, 2b, 2c, and 2d.
The developing units 16a, 16b, 16c, and 16d correspond to four colors of yellow, cyan, magenta, and black, respectively.
Each of the developing units 16a, 16b, 16c, and 16d is configured to include a developing roller disposed to face a surface of each of the photoreceptor drums 2a, 2b, 2c, and 2d and a stirring roller for stirring toner.
The toner cartridges 5a, 5b, 5c, and 5d are provided corresponding to the developing units 16a, 16b, 16c, and 16d, respectively, and store the toners of different colors that are supplied to the developing units 16a, 16b, 16c, and 16d, respectively.
The toner cartridges 5a, 5b, 5c, and 5d store toners of yellow, cyan, magenta, and black respectively.
The toner feeding parts 6a, 6b, 6c, and 6d are provided to correspond to the toner cartridges 5a, 5b, 5c, and 5d and the developing units 16a, 16b, 16c, and 16d, respectively; and the toner feeding parts 6a, 6b, 6c, and 6d supply the toners of the respective colors stored in the toner cartridges 5a, 5b, 5c, and 5d to the developing units 16a, 16b, 16c, and 16d, respectively.
The toner feeding devices 6a, 6b, 6c, and 6d are connected with the developing units 16a, 16b, 16c, and 16d, respectively, via toner feeding paths (not illustrated).
Toner images of respective colors formed on the photoreceptor drums 2a, 2b, 2c, and 2d undergo primary transfer in sequence onto the intermediate image transfer belt 7.
The intermediate transfer belt 7 is stretched around the opposing roller 18 consisting of a driven roller 35 and a driving roller, a tension roller 36 and the like.
Since the tension roller 36 biases the intermediate image transfer belt 7 from inside to outside, a predetermined tension is applied to the intermediate image transfer belt 7.
Each of primary transfer rollers 37a, 37b, 37c, and 37d is opposed on the opposite side to the photoreceptor drums 2a, 2b, 2c, and 2d to thereby sandwich the intermediate image transfer belt 7.
Parts of the intermediate image transfer belt 7 are nipped between the primary image transfer rollers 37a, 37b, 37c, and 37d and the photoreceptor drums 2a, 2b, 2c, and 2d.
The nipped parts are pressed against surfaces of the photoreceptor drums 2a, 2b, 2c, and 2d.
Primary image transfer nips N1a, N1b, N1c, and N1d are formed between the photoreceptor drums 2a, 2b, 2c, and 2d and the primary image transfer rollers 37a, 37b, 37c, and 37d, respectively.
At the primary image transfer nips N1a, N1b, N1c, and N1d, toner images of the respective colors developed on the photoreceptor drums 2a, 2b, 2c, and 2d undergo primary transfer in sequence onto the intermediate image transfer belt 7.
In this manner, a full-color toner image is formed on the intermediate image transfer belt 7.
A primary transfer bias, for transferring the toner images of the colors formed on the photoreceptor drums 2a, 2b, 2c, and 2d to the intermediate transfer belt 7, respectively, is applied to each of the primary transfer rollers 37a, 37b, 37c, and 37d by primary transfer bias application portions (not illustrated).
The static eliminators 12a, 12b, 12c, and 12d are disposed so as to face a surface of the photoreceptor drums 2a, 2b, 2c, and 2d, respectively.
The static eliminators 12a, 12b, 12c, and 12d each remove electricity (eliminate an electrical charge) from a surface of each of the photoreceptor drums 2a, 2b, 2c, and 2d after the primary image transfer, by casting light on the surface of each of the photoreceptor drums 2a, 2b, 2c, and 2d.
The drum cleaning portions 11a, 11b, 11c, and 11d are disposed so as to face a surface of the photoreceptor drums 2a, 2b, 2c, and 2d, respectively.
The drum cleaning portions 11a, 11b, 11c, and 11d, remove toner and attached matter remaining on the surface of the photoreceptor drums 2a, 2b, 2c, and 2d, respectively, and make the removed toner fed to a predetermined collection mechanism for collection.
The secondary transfer roller 8 secondarily transfers the full-color toner image, which was primarily transferred to the intermediate transfer belt 7, to the paper T.
A secondary bias is applied to the secondary image transfer roller 8 to transfer the full-color toner image formed on the intermediate image transfer belt 7 to the sheet of paper T by the primary transfer bias application part (not illustrated).
The secondary image transfer roller 8 comes into contact with and departs away from the intermediate image transfer belt 7 selectively.
More specifically, the secondary image transfer roller 8 is configured to be movable between a contact position at which it is in contact with the intermediate image transfer belt 7 and a spaced position at which it is spaced apart from the intermediate image transfer belt 7.
In particular, the secondary transfer roller 8 is disposed at the contact position for transferring the toner image primarily transferred to a surface of the intermediate transfer belt 7 to the paper T, and at the spaced position in all other circumstances.
The opposing roller 18 is disposed opposite to the secondary image transfer roller 8 across the intermediate image transfer belt 7.
A part of the intermediate transfer belt 7 is sandwiched between the secondary transfer roller 8 and the opposing roller 18.
The paper T is pressed against an outer surface (a side to which the toner image is primarily transferred) of the intermediate transfer belt 7.
A secondary image transfer nip N2 is formed between the intermediate image transfer belt 7 and the secondary image transfer roller 8.
At the secondary image transfer nip N2, the full-color toner image primarily transferred to the intermediate image transfer belt 7 is secondarily transferred to the sheet of paper T.
The fusing unit 9 fuses and pressurizes color toners composing the toner image secondarily transferred to the paper T, in order to fix the color toners on the paper T.
The fusing unit 9 includes a heating rotator 9a that is heated by a heater, and a pressurizing rotator 9b that is brought into pressure-contact with the heat rotator 9a.
The heating rotator 9a and the pressurizing rotator 9b nip and compress, and convey the paper T to which the toner image is secondarily transferred.
The sheet of paper T is fed while nipped between the heating rotator 9a and the pressurizing rotator 9b, so that the toner transferred to the sheet of paper is fused and pressurized to be fixed to the sheet of paper T.
Next, the paper feeding/ejection portion KH is described with reference to
As shown in
The paper feeding cassettes 52 are attached to the case member BD, which is a housing of the main body device M, so as to be insertable and removable.
In other words, the paper feeding cassettes 52 are housing units that house the paper T and are attached to the case member BD so as to be insertable and removable.
The paper feeding cassette 52 includes a paper tray 60 on which the sheets of paper T are placed.
The paper feeding cassette 52 stores the sheets of paper T stacked on the sheet of paper Tray 60.
The paper T placed on the paper tray 60 is fed to the paper path L by a cassette feeding portion 51 disposed in an end portion of the paper feeding cassettes 52 on a side of feeding the paper (in a right end portion of
The cassette feeding portion 51 includes a double feed preventing mechanism consisting of: a forward feed roller 61 for picking up the paper T on the paper tray 60; and a paper feeding roller pair 63 for feeding the paper T one sheet at a time to the paper path L.
The manual feeding portion 64 is provided on a right lateral face (the right side in
The manual feeding portion 64 is provided primarily for the purpose of feeding paper T that is different in size and type from the paper T stored in the paper feeding cassette 52 to the main body device M.
The manual feeding part 64 includes the manual feeding tray 65, which composes a portion of a right lateral face of the main body device M in a closed state, and a paper feeding roller 66.
A lower end of the manual feeding tray 65 is pivotally connected to the main body device M in the vicinity of the paper feeding roller 66 (openable and closable).
A sheet or sheets of paper T are placed on the manual feeding tray 65 while it is open.
The paper feeding roller 66 feeds the paper T placed on the manual feeding tray 65 in an opened state to a manual feeding path La.
The first ejection portion 50a and the second ejection portion 50b are provided at a position on an upper side in the main body device M and below the reader unit 301.
The first ejection portion 50a and the second ejection portion 50b eject the paper T to the outside of the main body device M.
The first ejection portion 50a and the second ejection portion 50b are described later in detail.
The paper feed path L includes: a first paper feed path L1 from the cassette feeding part 51 to the secondary image transfer nip N2; a second paper feed path L2 from the secondary image transfer nip N2 to the fusing unit 9; a third paper feed path L3 from the fusing unit 9 to the ejection portion 50; the manual paper feed path La that guides paper fed from the manual feeding part 64 to the first paper feed path L1; a reverse paper feed path Lb that reverses and returns the paper that is fed from an upstream side to a downstream side in the third paper feed path L3 to the first paper feed path L1; and a fourth paper path L4.
The fourth paper path L4 is a paper path for feeding the paper T, which is being fed in the third paper path L3, to the second ejection portion 50b.
In addition, a first junction P1 and a second junction P2 are provided in the middle of the first paper path L1.
A first branch portion Q1 is provided in the middle of the third paper path L3.
The first junction P1 merges the manual paper feed path La into the first paper feed path L1.
The second junction P2 is a junction where the reverse paper path Lb joins the first paper path L1.
The first branch portion Q1 is a branch portion where the fourth paper path L4 branches off from the third paper path L3.
A switching member 58 is provided in the first branch portion Q1.
The switching member 58 shifts (switches) a feeding direction of the paper T discharged from the fusing unit 9 to the third paper path L3 leading to the first ejection portion 50a or to the fourth paper path L4 leading to the second ejection portion 50b.
In addition, a sensor for detecting the paper T and a resist roller pair 80 for skew compensation of the paper T and timing adjustment between formation of the toner image in the image forming unit GK and feed of the paper T, are disposed in the middle of the first paper path L1 (more specifically, between the second junction P2 and the secondary transfer roller 8).
The sensor is disposed immediately in front of the regisit rollers 80 in the direction of feeding of the sheet of paper T (upstream side in the feeding direction).
The regisit roller pair 80 is a pair of rollers that feeds the paper T by adjusting the timing or the correction described above based on the detection signal information from the sensor.
For a case of performing duplex printing of the paper T, a reverse paper path Lb is provided for making an opposite surface (an unprinted surface), to a surface that has already been printed, face toward the intermediate transfer belt 7.
The reverse paper path Lb can reverse and return the paper T, conveyed from the first branch portion Q1 toward the ejection portion 50b, to the first paper path L1, in order to convey the paper T to an upstream side of the regist roller pair 80 disposed on an upstream side of the secondary transfer roller 8.
In the secondary transfer nip N2, a toner image is transferred to the unprinted surface of the paper T that is reversed by the reverse paper path Lb.
The first ejection portion 50a is formed in an end portion of the third paper path L3.
The first ejection portion 50a ejects the paper T, which does not require a post-process, to the outside of the main body device M.
As shown in
In addition, the first ejection portion 50a has an opening toward a left lateral face of the main body device M (left side in
As shown in
The ejected paper accumulating portion M1 is formed below the reader unit 301 in the main body device M.
The ejected paper accumulating portion M1 is a space having an opening on a front face of the main body device M.
The paper T, to which a predetermined toner image is formed, ejected from the first ejection portion 50a is stacked and accumulated in the ejected paper accumulating portion M1.
The paper T accumulated in the ejected paper accumulating portion M1 can be taken out from a front opening of the main body device M.
In addition, in the present embodiment, as shown in
As shown in
The second ejection portion 50b is formed below the first ejection portion 50a, to have an opening directed to the ejected paper accumulating portion M1.
The second ejection portion 50b is an ejection portion for post-processing (or an ejection portion for the relay unit) that feeds the paper T being conveyed on the fourth paper path L4 to the post-processing unit 630 via the relay unit 500 (described later).
The relay unit 500 is disposed sequentially with respect to the opening side of the second ejection portion 50b (connected to the main body device M).
The post-processing unit 630 is disposed sequentially with respect the relay unit 500 (connected to the main body device M via the supporting unit 600).
The post-processing unit 630 executes post-processing (stapling, punching, sorting and the like) of the paper that is ejected from the second ejection portion 50b and fed via the relay unit 500.
It should be noted that a sensor for detecting a sheet of paper is disposed at a predetermined position of each paper feed path.
Next, a structure for eliminating paper jams in main paper paths L1 to L3 (the first paper path L1, the second paper path L2, and the third paper path L3 are also collectively referred to as “main paper paths” hereinafter) and in the reverse paper path Lb is briefly described.
As shown in
On a right lateral face side of the main body device M (right side in
A lower end portion of the cover body 40 is connected with the main body device M via a fulcrum shaft 43.
The fulcrum shaft 43 is disposed so that an axial direction thereof is along a direction intersecting the main paper paths L1 to L3 and the reverse paper path Lb.
The cover body 40 is pivotally configured about the fulcrum shaft 43 between a closed position (shown in
The cover body 40 is composed of a first cover portion 41 that is pivotally connected with the main body device M by the fulcrum shaft 43 and a second cover portion 42 that is pivotally connected with the main body device M by the same fulcrum shaft 43.
The first cover portion 41 is positioned more outward (to a lateral face side) in the main body device M than the second cover portion 42.
It should be noted that, in
In a state where the cover body 40 is in a closed position, an outer face side of the first cover portion 41 constitutes a portion of an outer face (lateral face) of the main body device M.
In addition, in a state in which the cover body 40 is in the closed position, an inner face side (a side to the main body device M) of the second cover portion 42 constitutes a portion of the main paper paths L1 to L3.
Furthermore, in a state where the cover body 40 is in the closed position, an inner face side of the first cover portion 41 and an outer face side of the second cover portion 42 constitute at least a portion of the reverse paper path Lb.
In other words, the reverse paper path Lb is formed between the first cover portion 41 and the second cover portion 42.
Since the copy machine 1 according to the present embodiment is provided with the cover body 40 thus configured, in a case where a paper jam occurs in the main paper paths L1 to L3, jammed paper in the main paper paths L1 to L3 can be removed by opening the main paper paths L1 to L3 by pivoting the cover body 40 from the closed position shown in
On the other hand, in a case in which a paper jam occurs in the reverse paper path Lb, jammed paper in the reverse paper path Lb can be removed by opening the reverse paper path Lb by pivoting the cover body 40 to the opened position and then pivoting the second cover portion 42 about the fulcrum shaft 43 toward the main body device M (right side in
In the copy machine 1 described above, the relay unit 500 and the post-processing unit 630 that are optional units are attached to the main body device M (copy machine main body 1A) that forms an image on the paper T as the target material.
In addition, the main body device M includes, as described above: the case member BD that constitute the external shape; the paper feeding cassettes 52; the main power supply unit 400; the image forming unit GK; the second ejection portion 50b (main body ejection portion); and paper paths Lx (L3, L4) for post-processing.
The paper feeding cassettes 52 house the paper T and are attached to the case member BD, which is a housing of the main body device M, so as to be insertable and removable.
The main power supply unit 400 is connected to an external power source, is supplied with power of a first voltage, performs a transformation process, and feeds power required to operate driving units, to a driving unit of the image reading device 300 and various driving units that are provided by standard in the main body device M (copy machine main body 1A).
In addition, as shown in
In other words, the main power supply unit 400 is configured to output power to driving units and the like constituting the image reading device 300 included in the main body device M (copy machine main body 1A), and to supply power of the first voltage from the external power source to the power unit 620 via the first voltage output connector 410.
The image forming unit GK is driven by the power supplied from the main power supply unit 400 and forms an image on the paper T.
The second ejection portion 50b is the main body ejection portion that ejects the paper T on which the image is formed by the image forming unit GK to the outside of the main body device M (case member BD) in order to feed the paper T to the post-processing unit 630.
The paper path Lx for post-processing feeds the paper T stored in the paper feeding cassettes 52 and feeds the paper T on which an image is formed by the image forming unit GK to the second ejection portion 50b.
The paper path Lx for post-processing is a paper path illustrated in
Next, with reference to
The relay unit 500 has a thin box shape, which is small in height.
The relay unit 500 can be inserted into and removed from the unit attachment space 420, from the front face side of the main body device M (see
Here, an arrow Y1 shown in
The relay unit 500 is attached to the unit attachment space 420 in such a way that the right lateral face thereof is directed to the second ejection portion 50b and the left lateral face thereof is disposed on a side to the opening 430 on the left lateral face of the main body device M (see
In addition, in a state in which the relay unit 500 is installed in the unit attachment space 420, the upper end face 501 of the relay unit 500 functions as a paper accumulating surface for accumulating the paper T ejected from the first ejection portion 50a of the main body device M.
As shown in
As shown in
The relay unit inlet 511 is a portion through which the paper T ejected from the second ejection portion 50b of the main body device M is accepted (fed in).
As shown in
The relay unit outlet 521 is a portion through which the paper T, which is fed into the relay unit 500 through the relay unit inlet 511, is fed to the outside of the relay unit 500.
Here, the relay unit outlet 521 is disposed to face the post-processing unit inlet 631 (described later).
Inside the relay unit 500 is formed an internal paper path 551 (see
The relay unit feeder 531 is a paper feeding means provided inside the relay unit 500 (see
The relay unit feeder 531 feeds the paper T, fed in through the relay unit inlet 511, to the relay unit outlet 521 along the internal paper path 551.
In addition, the relay unit feeder 531 is driven by power of a second voltage, different from the first voltage output from the main power supply unit 400 of the main body device M, and supplied by the power unit 620.
As shown in
The relay unit connector 541 is formed in the vicinity of the relay unit outlet 521 so as to extend in a horizontal direction.
A connecting part of the relay unit connector 541 is disposed to be directed to the horizontal direction.
In the present embodiment, the relay unit connector 541 is disposed at a position perpendicularly below the relay unit outlet 521.
The relay unit connector 541 is a connector to which the power of the second voltage that is required for driving the relay unit feeder 531 is supplied.
The supporting unit 600 is detachably attached to the left lateral face 441 of the main body device M (see
The supporting unit 600 is provided with the frame body 610 and a first connector 640 (see
The frame body 610 is connected to the left lateral face 441 of the main body device M (see
The frame body 610 is a member for fixing the post-processing unit 630 to the main body device M.
As shown in
As shown in
The engagement hooks 613 are moved horizontally toward the main body device M and inserted into engagement holes (not illustrated) formed on the left lateral face 441 of the main body device M.
As a result, the frame body 610 is engaged (temporarily fixed) with the main body device M in a state in which the perpendicular wall portion 611 faces (is in total contact with) the left lateral face 441.
By inserting and rotating predetermined screws into the through holes 614 in this engaged (temporary fixed) state, the perpendicular wall portion 611 (the frame body 610) is connected and fixed to the left lateral face 441 (the main body device M).
Here, the frame body 610 according to the present embodiment can be attached to the main body device M by moving the frame body 610 in the horizontal direction.
As a result, the present embodiment is configured such that an electrical connection operation between the relay unit 500 and the transformation unit 620 on the frame body 610 can be simplified.
In addition, as shown in
The unit engagement hook 616 is provided on the perpendicular wall portion 611.
The unit engagement hook 616 has an engagement groove 616a with an opening directed upward in the perpendicular direction.
The unit engagement hook 616 is engaged with a back face portion of the post-processing unit 630 that is placed on the connection hole 617 from above, thereby restricting horizontal movement of the post-processing unit 630.
The connection hole 617 is formed to penetrate a supporting plate portion 612a on a top part of the horizontal supporting mount 612 on which the post-processing unit 630 is placed.
The connection hole 617 is a hole for screw-fixing the post-processing unit 630 to the frame body 610.
Since the attachment direction of the frame body 610 with respect to the main body device M is orthogonal to the attachment direction of the post-processing unit 630 with respect to the frame body 610, a load applied upon attachment of the post-processing unit 630 does not have much influence on attachment of the frame body 610 with respect to the main body device M, thereby improving attachability of each optional unit.
As shown in
A connecting part of the first connector 640 is disposed to be directed in the horizontal direction (right side of
In addition, the first connector 640 is disposed on the perpendicular wall portion 611 so as to project horizontally toward the main body device M.
When the frame body 610 is attached to the left lateral face 441 of the main body device M, the first connector 640 is engaged with (connected to) the relay unit connector 541 provided in the relay unit 500.
Here, the frame body 610 is moved in the horizontal direction to be attached to the main body device M.
In other words, by attaching the frame body 610 to the main body device M by moving the frame body 610 horizontally, the first connector 640 is engaged with (connected to) the relay unit connector 641 that is disposed to extend in the horizontal direction as the first connector 640, such that the connecting part thereof is directed to the first connector 640.
The first connector 640 is electrically connected to the power unit 620 and supplies power of the second voltage, which is transformed by the power unit 620, to the relay unit feeder 531 of the relay unit 500 via the relay unit connector 541.
As shown in
The power unit 620 is attached to the frame body 610 before attaching the frame body 610 to the main body device M.
In other words, the power unit 620 is attached to the frame body 610 in advance and attached to the main body device M integrally with the frame body 610.
In the power unit 620, an input connector 621, which is connected to the first voltage output connector 410 of the main power supply unit 400, is provided at a tip of a cable extending from the housing 620a.
The power unit 620 is supplied with power of the first voltage from the main power supply unit 400 via the first voltage output connector 410.
The power unit 620 is supplied with power of the first voltage from the main power supply unit 400, transforms the voltage thus supplied to a voltage required for driving the relay unit 500 and the post-processing unit 630 by the transformation unit, and outputs the power thus transformed (from at least one of the first connector 640 and the second connector 650 (described later)).
In addition, a signal output connector 411 that outputs a control signal is provided in the main body device M.
In the power unit 620, a signal input connector 622, which is connected to the signal output connector 411, is provided at a tip of a cable extending from the housing 620a.
The control signal output from the main body device M is supplied to the relay unit 500 and the post-processing unit 630 via the first connector 640 and the second connector 650.
As shown in
Therefore, a connecting part of the second connector 650 is disposed to be directed in the perpendicular direction.
When the post-processing unit 630 is attached to the horizontal supporting mount 612 of the frame body 610, the second connector 650 is connected to (engaged with) the post-processing unit connector 634 that is provided on a lower surface of the post-processing unit 630.
The second connector 650 is electrically connected to the power unit 620 and supplies power of the second voltage or a third voltage different from the first voltage, which is transformed by the power unit 620, to a driving unit in the post-processing unit 630 via the post-processing unit connector 634.
The post-processing unit connector 634 provided in the post-processing unit 630 and the second connector 650 in the power unit 620, to which the post-processing unit connector 634 is engaged and connected, both have connecting parts directed in the perpendicular direction.
Therefore, the post-processing unit 630 is moved in the horizontal direction to be attached to the frame body 610.
The post-processing unit 630 is detachably attached to the frame body 610.
The post-processing unit 630 is attached to the post-processing unit 630 via the frame body 610 (see
As shown in
The post-processing unit inlet 631 is a part (opening) through which the paper T that is fed from the relay unit outlet 521 of the relay unit 500 is fed in.
The post-processing unit inlet 631 is disposed to face the relay unit outlet 521.
The post-processing unit inlet 631 is disposed to face the relay unit outlet 521, so as to be connected thereto.
The post-processing unit outlet 632 is a part (opening) through which the paper T that is fed into the post-processing unit 630 through the post-processing unit inlet 631 is ejected to the outside of the post-processing unit 630.
The post-processing unit outlet 632 is configured to eject paper T, which is processed in a predetermined manner by the post-processing part 633, to the outside of the post-processing unit 630.
As shown in
The ejected paper tray 660 is an ejected paper tray in which the paper T, which is ejected from the post-processing unit outlet, is accumulated.
The post-processing part 633 is provided in the post-processing unit 630 and performs post-processing such as stapling, punching and the like with respect to the paper T that is fed in through the post-processing unit inlet 631.
The post-processing part 633 also has a function of feeding the paper T thus post-processed to the post-processing unit outlet 632.
In the present embodiment, the post-processing part 633 is driven by a supply of power of the second voltage or the third voltage, which is different from the first voltage.
The post-processing part 633 is driven by a supply of power of the second voltage, which is supplied to the relay unit 500, or power of the third voltage, which is different either from the first and second voltages.
Here, if the post-processing part 633 is driven by a supply of power of the second voltage, the power unit 620 requires only one transformation processing unit.
On the other hand, if the post-processing part 633 is driven by a supply of power of the third voltage, the power unit 620 requires two transformation processing units.
As shown in
A connecting part of the post-processing unit connector 634 is disposed to be directed downward in the perpendicular direction.
The post-processing unit connector 634 is a connector to which the power of the second or third voltage is supplied.
When the post-processing unit connector 634 is attached to the frame body 610, the second connector 650 provided in the transformation unit 620 is engaged with (connected to) the post-processing unit connector 634.
As a result, the post-processing unit 630 is supplied with power from the power unit 620 via the post-processing unit connector 634 connected to the second connector 650.
Next, with reference to
First, as shown in
In other words, the relay unit 500 is attached to the main body device M in such a way that the user inserts the relay unit 500 from a front face side of the main body device M, in a horizontal direction into the unit attachment space 420 in the ejected paper accumulating portion M1.
In a state in which the relay unit 500 is attached to the main body device M, the relay unit outlet 521 and the relay unit connector 541 that are arranged on the left lateral face 502 of the relay unit 500 (see
After attaching the relay unit 500 to the main body device M, the user attaches the frame body 610 with the power unit 620 having the second connector 650 and the first connector 640 attached thereto to the left lateral face 441 of the main body device M.
As shown in
Next, the user moves the frame body 610 in a direction of an arrow X3.
The user attaches the frame body 610 to the left lateral face 441 of the main body device M by further moving the frame body 610 such that a position of the connecting part of the first connector 640 corresponds to a position of the relay unit connector 541 of the relay unit 500.
By inserting the engagement hooks 613 into the engagement holes (not illustrated) formed on the left lateral face 441 of the main body device, while inserting and rotating predetermined screws into the through holes 614, the user connects and fixes the frame body 610 to the main body device M.
Here, the frame body 610 is attached to the left lateral face 441 of the main body device M by movement in the horizontal direction.
Here, both moving direction of the frame body 610 and connecting direction of the first connector 640 and the relay unit connector 541 are in a horizontal direction.
Therefore, if the user performs an attaching operation of the frame body 610, the first connector 640 and the relay unit connector 541 are engaged with and connected to each other.
After completion of attachment of the frame body 610 to the main body device M, the user attaches the post-processing unit 630 to the frame body 610.
As shown in
The user moves the post-processing unit 630 in a direction of an arrow X4 (horizontal direction) to strike a back face of the post-processing unit 630 against the perpendicular wall portion 611, and further moves the post-processing unit 630 in a perpendicular direction shown by an arrow Z4 to place a lower face of the post-processing unit 630 on the horizontal supporting mount 612 of the frame body 610 (see
Thereafter, the user fixes the post-processing unit 630 to the horizontal supporting mount 612 of the frame body 610 by means of the connection hole 617.
Attachment of the post-processing unit 630 to the frame body 610 is thus completed.
In an operation of placing the post-processing unit 630 on the horizontal supporting mount 612 of the frame body 610 by perpendicular movement, both moving direction of the post-processing unit 630 and connecting direction of the second connector 650 and the post-processing unit connector 634 are the perpendicular direction, and the second connector 650 and the post-processing unit connector 634 can be engaged with and connected to each other by an attaching operation of the post-processing unit 630.
As shown in
The power unit 620 can thus transform power of the first voltage supplied from the main power supply unit 400 of the main body device M to power of the second voltage, and then supply the power to the relay unit 500.
In addition, the power unit 620 can transform power of the first voltage supplied from the main power supply unit 400 of the main body device M to power of the third voltage that is different from the first voltage, and then supply the power to the post-processing unit 630.
Therefore, it is not necessary to provide a transformation unit for optional devices in the main body device M, thereby reducing cost for the main body device M.
As shown in
The paper T fed to the fourth paper path L4 illustrated in
The paper T fed to the post-processing unit 630 is subjected to predetermined post-processing in the post-processing unit 630 and then ejected to the ejected paper tray 660.
Here, in the copy machine 1 according to the present embodiment, an ejection route for the paper T after image formation in the image forming unit GK can be set in any of the following two ways, if no post-processing is required.
Although the copy machine 1 feeds the paper T to the post-processing unit 630 via the fourth paper path L4 and the relay unit 500, the post-processing unit 630 can be set to eject the paper T to the ejected paper tray 660 without performing the post-processing.
In addition, the copy machine 1 can be set to eject the paper T to the ejected paper accumulating portion M1 from the first ejection portion 50a of the third paper path L3, without feeding to the fourth paper path L4.
The paper T ejected from the first ejection portion 50a to the ejected paper accumulating portion M1 is accumulated on the upper end face 501 of the relay unit 500 and removed from a front face side of the main body device M.
The image forming apparatus of the present invention is not particularly limited, and can be a copy machine, a printer, a facsimile machine, or a multi-functional printer having functions thereof.
In addition, the sheet-shaped target material is not limited to paper, and can be a film sheet, for example.
In the above embodiment, a case in which the driving voltage of the post-processing unit 630 (the third voltage) is different from the driving voltage of the relay unit 500 (the second voltage) has been described.
However, both the post-processing unit 630 and the relay unit 500 can obviously be driven with the second voltage.
| Number | Date | Country | Kind |
|---|---|---|---|
| 2010-267773 | Nov 2010 | JP | national |
