Patent Grant
10732539
The present invention relates to an image forming apparatus such as a copying machine, a printer, a facsimile machine, and a multifunction machine having the functions of these machines.
An image forming apparatus is known in which the container containing the developer can be dismountably mounted to the main assembly of the device, and in the mounted state thereof, the developer can be replenished to the developing device from the accommodating container provided inside the main assembly of the device. A structure has been proposed in Japanese Laid-open Patent Application No. 2015-49291, for example, in which a shutter of the accommodating container does not open even in a state where the accommodating container is mounted to a predetermined mounting position of the apparatus main assembly, and the shutter opens in accordance with the start of driving of the container. In the case of the structure described in this publication, the shutter is not opened even if the container is mounted, and therefore, even if the image forming apparatus is transported in a state where the accommodating container is mounted to the apparatus main assembly (single (same) package transportation), leakage of the developer is suppressed.
However, since the accommodating container is constituted to be mounted to and dismounted from the main assembly of the apparatus, it is often mounted without being fastened and fixed to the main assembly of the apparatus. There is a possibility that when the image forming apparatus is transported, the accommodating container vibrates, with the result that loads are applied to various parts connected or in contact between the mounted accommodating container and the device main assembly.
An object of the present invention is to provide a structure in which it is possible to prevent loads from being applied to various parts connected between the mounted accommodating container and the apparatus main assembly when transporting the image forming apparatus.
The object of the present invention is to provide a structure in which the load between the mounted accommodating container and the apparatus main assembly is reduced, even if the image forming apparatus is transported while the accommodating container is mounted to the image forming apparatus.
According to an aspect of the present invention, there is provided an image forming apparatus comprising a rotatable accommodating container configured to accommodate a developer; a receiving device which is configured to receive said accommodating container which is inserted in a direction along a rotational axis of said accommodating container and which is configured to receive the developer discharged from said accommodating container when said accommodating container is in a first position; and a regulating member provided on said accommodating container, said regulating member being configured to prevent, during transportation of said image forming apparatus, said accommodating container from moving to the first position from a second position which is upstream of the first position with respect to an inserting direction of said accommodating container and in which the developer is not discharged from said accommodating container.
Further features of the present invention will be described from the following description of the example description with reference to the attached drawings.
In
In
In
In
In
In
Parts (a) and (b) of
Parts (a) and (b) of
Parts (a), (b) and (c) of
Parts (a), (b) and (c) of
Referring to
[Image Forming Apparatus]
The image forming apparatus 200 is a color image forming apparatus using an electrophotographic process, and is an image forming apparatus of a so-called intermediary transfer tandem type in which four color image forming stations Pa to Pd are provided above the intermediary transfer belt 7 side by side. In this embodiment, the image forming apparatus 200 forms an image with four colors of yellow (Y), magenta (M), cyan (C), and black (Bk). The number of colors is not limited to four, and the order of colors is not limited to this.
The image forming apparatus 200 forms a toner image (image) on the recording material S, in accordance with an image signal from an original reading device (not shown) connected to the apparatus main assembly 200A or a host device such as a personal computer which is communicably connected to the apparatus main assembly 200A. As a recording material, a sheet material such as paper, plastic film, cloth or the like is used.
The recording material S is stored so as to be stacked in the storage case 10 and is fed in accordance with the image formation timing by a feeding roller 61 using a friction separation method. The recording material S fed by the feeding roller 61 passes through the feeding path and is fed to registration rollers 62. Oblique feeding correction and timing correcting operations for the recording material S are carried out by the registration rollers 62, and thereafter, the recording material S is fed to the secondary transfer portion T2. The secondary transfer portion T2 is a transfer nip portion formed by the secondary transfer outer roller 9 and the secondary transfer inner roller 8 opposed thereto, and it secondarily transfers the toner image from the intermediary transfer belt 7 onto the recording material S by applying a predetermined pressure and electrostatic bias.
The description will be made as to the image forming process of the toner image to be fed to the secondary transfer portion T2 in synchronism with the feeding process of the recording material S up to the secondary transfer portion T2 explained above. The image forming portions Pa to Pd include respective photosensitive drums 1a to 1d in the form of cylindrical photosensitive members as image bearing members, respective charging devices 2a to 2d, respective exposure devices 3a to 3d, respective developing devices 100a to 100d, respective primary transfer rollers 5a to 5d, respective drum cleaners 6a to 6d, and the like.
First, the surfaces of the photosensitive drums 1a to 1d which are rotationally driven in the direction of the arrow by a driving device (not shown) are uniformly charged by the charging devices 2a to 2d. Then, the exposure devices 3a to 3d are driven based on the image information signal (image signal) fed from the original reading apparatus or the like, and the laser beam passes through the deflection member such as a mirror to the photosensitive drums 1a to 1d. By this, electrostatic images corresponding to the respective colors are formed on the photosensitive drums 1a to 1d. Next, the electrostatic images formed on the photosensitive drums 1a to 1d are developed with toner by the developing devices 100a to 100d.
The developing devices 100a to 100d include developing containers 101a to 101d for containing developer, developing sleeves 102a to 102d as developer carrying members, and the like. The developing sleeves 102a to 102d carry the developer in the developing containers 101a to 101d to the developing regions opposed to the photosensitive drums 1a to 1d. The developing sleeves 102a to 102d supply the toner onto the photosensitive drums 1a to 1d by applying a predetermined developing bias to develop the electrostatic image. In this embodiment, the developer is a two-component developer containing non-magnetic toner and magnetic carrier. However, the developer may be a one-component developer including toner.
After the toner images are formed on the photosensitive drums 1a to 1d, predetermined pressing force and electrostatic load bias are applied by the primary transfer rollers 5a to 5d at the primary transfer portions T1a to T1d. By this, the toner images on the photosensitive drums 1a-1d are primarily transferred onto the intermediary transfer belt 7. Transfer residual toner left on the photosensitive drums 1a to 1d is collected by the drum cleaners 6a to 6d and the photosensitive drums 1a to 1d prepare for the next image forming process again.
By the above-described image forming operation, the toners in the developing containers 101a to 101d of the developing devices 100a to 100d are consumed. When the amount of toner in the developing containers 101a to 101d decreases, the toner is supplied to the developing containers 101a to 101d from the accommodating containers Ta to Td. For this purpose, a supplying pipe 70 for supplying toner is provided between the containers Ta to Td and the developing containers 101a to 101d. Details of such a toner supplying operation will be described later.
The intermediary transfer belt 7 is an endless belt, and is provided on an intermediary transfer belt frame (not shown). It is stretched by a secondary transfer inner roller 8 which also serves as a rotational driving of the intermediary transfer belt 7, a tension roller 17, and a secondary transfer upstream roller 18. When the secondary transfer inner roller 8 is rotationally driven in the direction of the arrow R1, the intermediary transfer belt 7 is rotationally driven in the direction of the arrow R2.
The image forming process described above is executed in parallel by the image forming portions Pa to Pd of Y, M, C and Bk, and the downstream toner image is sequentially transferred superimposedly onto the toner image primarily transferred onto the intermediary transfer belt 7. By this, a full-color toner image is formed on the intermediary transfer belt 7 and fed to the secondary transfer portion T2. The untransferred residual toner remaining on the intermediary transfer belt 7 after passing through the secondary transfer portion T2 is collected by the belt cleaner device 11.
By the above-described conveyance process and image forming process, the secondary transfer is carried out in timed relation with the feeding of the recording material S such that the full color toner image is matched at the secondary transfer portion T2. After that, the recording material S is fed to the fixing device 13. The fixing device 13 has a fixing roller 14 including a heater therein and a facing roller 15 facing the fixing roller 14 and forming a fixing nip portion. The recording material S fed into the fixing device 13 passes through the inside of the fixing nip portion and a predetermined pressure and heat quantity are applied in the fixing nip portion. Then, the toner image is melted and fixed (fixed) on the recording material S. The recording material S to which the toner image is fixed is discharged to the discharge tray 63.
Each process as described above is controlled by the control portion 50. The control portion 50 has a CPU (Central Processing Unit), a ROM (Read Only Memory), and a RAM (Random Access Memory). The CPU controls each part while reading the program corresponding to the control procedure stored in the ROM. Working data and inputted data are stored in the RAM, and the CPU performs control by referring to the data stored in the RAM based on the aforementioned programs and the like. In addition, the image forming apparatus 200 has an operation portion 60 such as an operation panel, and the user can make various settings of the image forming apparatus 200 through the operation portion 60.
[Storage Container]
Next, referring to
As shown in part (a) and part (b) of
A gear portion 20a, a pump portion 20b, a projecting portion 20d, and the like are formed in the toner containing portion 20. The gear portion 20a engages with the drive portion on the main assembly 200 side to transmit the rotational driving force from the main assembly 200 side to the toner storing portion 20. The pump portion 20b is a resin displacement type pump whose volume is variable with the reciprocating motion. An arrow ω and an arrow γ in part (a) of
Specifically, as shown in part (a) of
Referring to
[Driving Structure of Toner Supplying Portion]
A structure of a toner supplying portion 400 on the apparatus main assembly 200A side where a supplying toner (toner for supply) is supplied from an accommodating container Ta to the developing device 100a will be described with reference to
As shown in
In this embodiment, the accommodating container Ta is mounted in the apparatus main assembly 200A by being inserted from a front side toward a rear side in a substantially horizontal direction (inserting direction), and is pulled out from the apparatus main assembly 200A by being pulled out in an opposite direction (pulling-out direction) to the inserting direction. The inserting direction and the pulling-out direction of such an accommodating container Ta are the same as a longitudinal direction of the accommodating container Ta and an expansion and contraction direction of a pump portion 20b, and further the same as a rotational axis direction of the accommodating container Ta. Incidentally, the front side of the apparatus main assembly 200A is a side where a user operates the image forming apparatus 200 and is a front side on the drawing sheet of
On the rear-side plate 202, a container driving device 300 and a supply pipe 70 are mounted. The container driving device 300 is, as shown in
The container driving device 300 is provided with a rotatably supported phase detecting flag 309 and contacts the toner accommodating portion 20 of the accommodating container Ta and a cam portion 24 rotating integrally with the gear portion 20a. The cam portion 24 is, as shown in parts (a) and (b) of
As shown in part (a) of
Thus, the controller 50 controls discharge of the toner from the accommodating container Ta by causing the accommodating container Ta to reciprocate once every half rotation of the accommodating container Ta and then by causing the accommodating container Ta to stop rotation thereof. The toner discharged from the accommodating container Ta passes through a supply pipe 70 and is delivered to the developing device 100a (
[Mounting and Demounting of Accommodating Container]
Next, using parts (a) to (d) of
When the accommodating container Ta is mounted in the apparatus main assembly 200A, first, as shown in part (a) of
Further, when the accommodating container Ta is pushed in the apparatus main assembly 200A, as shown in part (b) of
As a result, as shown in part (d) of
Here, at one end of the accommodating container Ta, a container-side contact (point) 23 as a first contact (point) is provided. At a position where the apparatus main assembly 200A opposes the one end of the accommodating container Ta, main assembly-side contact (point) 405 as a second contact (point) is provided. The main assembly-side contact 405 contacts the container-side contact 23 and thus enables communication between the accommodating container Ta and the apparatus main assembly 200A. The container-side contact 23 is connected with a memory in which information on the accommodating container Ta is stored. When the accommodating container Ta is mounted in the first position, the container-side contact 23 contacts the main assembly-side contact 405, so that this information is sent to the controller 50 of the apparatus main assembly 200A.
Further, as shown in
Further, in a state that the accommodating container Ta was mounted in the first position of the apparatus main assembly 200A, as shown in
[Opening and Closing of Shutter]
Next, using parts (a) and (b) of
The shutter 4 is provided with an opening 4a as shown in parts (a) and (b) of
Parts (a)-(c) of
A positional relationship between the accommodating container Ta and the shutter 4 in a state that the accommodating container Ta is not mounted in the apparatus main assembly 200A is, as shown in part (a) of
Then, when the accommodating container Ta is further inserted into the apparatus main assembly 200A, as shown in part (b) of
From this state, when the accommodating container Ta is further inserted into the apparatus main assembly 200A, by engagement between the shutter engaging groove 402c and the projection 4b, the shutter 4 is fixed to the lower container holding guide 402, and therefore, the accommodating container Ta excluding the shutter 4 is moved relative to the lower container holding guide 402. That is, the accommodating container Ta and the shutter 4 perform relative movement therebetween. Further, as shown in part (c) of
[Package Transportation]
Here, package transportation such that the accommodating container Ta is transported in a state in which the accommodating container Ta is mounted into the apparatus main assembly 200A is performed in a state in which the accommodating container Ta is mounted into the apparatus main assembly 200A in the first position as described above, there is a liability that the following problem arises. That is, in the state in which the accommodating container Ta is mounted in the first position, as described above, the container-side contact 23 contacts the main assembly-side contact 405, so that the sensor 406 contacts the one end of the accommodating container Ta. Further, the container driving gear 302 is connected with the gear portion 20a provided on the accommodating container Ta side. Thus, when the image forming apparatus is transported in a state that various devices are connected with and in contact with each other between the accommodating container Ta and the apparatus main assembly 200A, there is a liability that the accommodating container Ta vibrates during transportation, and loads are exerted on the various devices. That is, there is a liability that the loads are exerted on a contact portion between the container-side contact 23 and the main assembly-side contact 405, the sensor 406, and a connecting portion between the container driving gear 302 and the gear portion 20a.
Therefore, in this embodiment, in the apparatus main assembly 200A, the accommodating container Ta is mountable in each of the above-described first position and a second position which is different from the first position and in which the toner is not discharged from the accommodating container Ta. Further, in the case of the package transportation, a position of the accommodating container Ta is regulated (limited) to the second position by a regulating (limiting) member 500 as a regulating (limiting) means. This second position is a position upstream of the first position with respect to the inserting direction (predetermined direction) of the accommodating container Ta. Further, the second position is a position where the sensor 406 does not contact the one end of the accommodating container Ta and the container-side contact 23 does not contact the main assembly-side contact 405 and where the container driving gear 302 is not connected with the gear portion 20a.
[Regulating Member]
The regulating member 500 for regulating the accommodating container Ta to the second position of the apparatus main assembly 200A as described above will be described using
As shown in parts (a) and (b) of
On the other hand, the regulating member 500 includes a base portion 501, projected portions 502a, 502b and 502c, and abutting projections 503. The projected portions 502a, 502b and 502c are provided so as to be projected from three positions of the base portion 501 in a radial direction of the accommodating container Ta in a mounted state to the accommodating container Ta. The abutting projections 503 are provided so as to project from the projected portions 502a-502c, respectively, in the inserting direction. The base portion 501 is provided with a recessed portion 504 recessed from between the projected portions 502b and 502c toward the projected portion 502a in a substantially U-shape. The regulating member 500 is, as shown in part (b) of
As shown in part (a) of
In the case of the package transportation, the accommodating container Ta is mounted in the apparatus main assembly 200A in a state that the regulating member 500 is mounted to the grip portion. At that time, the accommodating container Ta is inserted into the apparatus main assembly 200A while being inserted into the inserting openings provided in the inserting opening cover 210 and the front-side plate 201. Then, as shown in part (a) of
Thus, in the state that the regulated member 500 is in the second positon, the container pulling-in lever 403 is positioned between the positions of parts (c) and (d) of
The apparatus main assembly 200A includes a front door 230 as a cover capable of opening and closing a space 220 into which the accommodating container Ta is inserted. The front door 230 is provided on the front side of the apparatus main assembly 200A and is rotated about a hinge, and thus opens and closes spaces into which the accommodating containers Ta-Td are inserted. The front door 230 is formed so as to be capable of being closed even when the accommodating container Ta in a state that the regulated member 500 is mounted on the grip portion 25 is in the second position.
That is, in this embodiment, as shown in part (a) of
Further, in the state that the accommodating container Ta is positioned in the second position, as shown in part (a) of
Further, in the state that the accommodating container Ta is positioned in the second position, a positional relationship between the discharge opening 21a of the flange portion 21 of the accommodating container Ta and the opening 4a of the shutter 4 is as shown in
On the other hand, when the regulating member 500 is demounted from the accommodating container Ta, regulation of the position of the accommodating container Ta is eliminated, so that the accommodating container Ta is capable of being inserted to the first position. That is, when the user or the like opens the front door 230 and pulls out the regulating member 500 from the grip portion 25 of the accommodating container Ta, engagement between the abutting projection 503 and the inserting opening cover 210 and engagement between the base portion 501 and the large-diameter portion 25a are eliminated, so that the accommodating container Ta is movable from the second position to the first position. At this time, the accommodating container Ta is in a state of being pulled in by the container pulling-in lever 403, and therefore is automatically pulled in to the first position and is mounted in the first position. That is, in this embodiment, the container pulling-in device 410 is constituted so that when the regulation by the regulating member 500 is eliminated at the second position, the container pulling-in device 410 pulls in the accommodating container Ta to the first position.
When the accommodating container Ta is pulled in to the first position, as described above in
[Accommodation of Regulating Member]
In the case of this embodiment, as shown in parts (a)-(c) of
Specifically, the accommodating portion 231 is, as shown in part (a) of
When the regulating member 500 is accommodated in the accommodating portion 231, as shown in part (c) of
Simultaneously therewith, the projected portion 502a is pushed in between the pair of upper engaging portions 232a and 232b, and the base portion 501 is pushed in between the pair of lower engaging portions 233a and 233b. At this time, the pair of engaging portions 506 does not interfere with the pair of lower engaging portions 233a and 233b as shown in part (c) of
As a result, as shown in parts (a) and (b) of
On the other hand, in the case that the regulating member 500 is demounted from the accommodating portion 231, as shown in part (c) of
Thus, in this embodiment, as shown in part (a) of
In this embodiment, even when the accommodating container Ta is accommodated in the accommodating portion 231 of the front door 230, as shown in
Further, the accommodating portion 231 is formed so that the accommodated regulating member pushes the accommodating container Ta toward the downstream side with respect to the inserting direction (predetermined direction) when the front door 230 is closed in a state in which the accommodating container Ta is positioned downstream of the first position with respect to the inserting direction. Here, a clearance dimension G between the accommodating container Ta accommodated in the accommodating portion 231 of the front door 230 and the grip portion 25 of the accommodating container Ta is smaller than a pullable-in range in which the container pulling-in lever 403 pulls in the accommodating container Ta. That is, the clearance dimension G is smaller than a distance of movement of the accommodating container Ta from the time when the position of the pulling-in spring 404 exceeds the dead center until the one end of the accommodating container Ta abuts against the abutting portion 402a as shown in parts (b)-(d) of
Accordingly, when the front door 230 in which the regulating member 500 is accommodated is closed, for example, in a state that the accommodating container Ta is inserted in a half-inserted state that the accommodating container Ta does not reach the second position, the regulating member 500 runs against the grip portion 25 and pushes the accommodating portion Ta to the pullable-in range. As a result, the accommodating container Ta is automatically pulled in to the first position by the container pulling-in lever 403. That is, in this embodiment, even in the case that the insertion of the accommodating container Ta is insufficient, the accommodating container Ta is automatically pulled in to the first position by closing the front door 230.
In this embodiment described above, it is possible to suppress exertion of the loads on the various devices connected between mounted the accommodating container Ta and the apparatus main assembly 200A during the transportation of the image forming apparatus 200. That is, in the case that the accommodating container Ta is transported by being packed with the apparatus main assembly 200A, the accommodating container Ta is mounted in the apparatus main assembly 200A in a state that the regulating member 500 is mounted to the grip 25 of the accommodating container Ta. As a result, the position of the accommodating container Ta is in a state of being regulated to the second position. As described above, in the second position, the discharge opening 21a and the opening 4a do not communicate with each other, so that the toner is not discharged from the accommodating container Ta. For this reason, it is possible to suppress leakage of the toner from the accommodating container Ta during the transportation of the image forming apparatus 200.
Particularly, at the second position, the sensor 406 does not contact the one end of the accommodating container Ta and the container-side contact 23 does not contact the main assembly-side contact 405, and further, the container driving gear 302 is not connected with the gear portion 20a. For this reason, it is possible to suppress exertion of the loads on the various devices such as the sensor 406, the container-side contact 23, the main assembly-side contact 405, the container driving gear 302, and the gear portion 20a due to vibration during the transportation of the image forming apparatus 200.
Further, in this embodiment, even after the regulating member 500 is demounted and the accommodating container Ta is mounted in the first position and then the image forming apparatus 200 is driven, the position of the accommodating container Ta is similarly regulated to the second position again, and as described above, the package transportation can be performed. That is, in the case that the package transportation can be performed after the apparatus is driven, the accommodating container Ta is moved to the second position, the regulating member 500 demounted from the accommodating portion 231 is mounted again to the grip 25 of the accommodating container Ta, so that the position of the accommodating container Ta can be regulated to the second position again.
Incidentally, in this embodiment, the constitution in which the container pulling-in device 410 was provided was described, but the image forming apparatus may also have a constitution in which the container pulling-in device 410 is not provided. In this case, for example, by employing a constitution in which the regulating member 500 is fixed to the inserting opening cover 210, an effect similar to the above described effect can be obtained.
Second Embodiment will be described using
As shown in with reference to
The toner supplying portion 400A includes a container driving device 300 and a supply pipe 70. Further, on the rear-side plate 202, a stopper unit 600 is mounted. The container driving device 300 and the supply pipe 70 have the same constitution as those in the First Embodiment and therefore will be omitted from detailed description. The stopper unit 600 for the accommodating container Ta is similar to those for the accommodating containers Tb-Td, and therefore, the stopper unit 600 for the accommodating container Ta will be described as a representative.
The stopper unit 600 includes, as shown in parts (a)-(c) of
Such a container stopper 601 is moved from the second movement position to the first movement position by a movable member driving portion 620. The movable member driving portion 620 includes the slide gear 602 which is a rotatable member rotated by drive of the driving motor 606, and a converting portion 610 for converting rotation of the slide gear 602 to movement of the container stopper 601.
That is, as shown in part (b) of
As shown in part (c) of
The container stopper 601 is held by the supporting plate 607 and the cover 608 so as to be unrotatable and be movable in the longitudinal direction (rotational axis direction of the slide gear 602). On the other hand, the slide gear 602 is held by the supporting plate 607 so as to be unrotatable and be unmovable in the rotational axis direction. As a result, the slide gear 602 is rotated relative to the container stopper 601, so that on the basis of engagement between the helical groove 601a and the projection 602b, the container stopper 601 is slid (moved) relative to the slide gear 602 in the longitudinal direction. That is, the drive of the driving motor 606 is transmitted to the slide gear 602 through the pinion gear 605 and the idler gears 603 and 604, so that the slide gear 602 is rotated. Then, the rotation of the slide gear 602 is converted by converting portion 610 and is transmitted to the container stopper 601, so that the container stopper 601 is moved in the longitudinal direction.
In this embodiment, the container stopper 601 is moved from the second movement position to the first movement position by normal rotation of the driving motor 606, and is moved from the first movement position to the second movement position by reverse rotation of the driving motor 606. The driving motor 606, the respective gears 602-605, and the container stopper 601 are supported by the supporting plate 607, and the supporting plate 607 is fixed to the rear-side plate 202 on a rear side so that the container stopper 601 is oriented toward the front side. Further, the movement direction of the container stopper 601 is substantially parallel to the inserting direction of the accommodating container Ta to be inserted into the apparatus main assembly. Further, as shown in parts (a) and (b) of
As shown in part (a) of
Specifically, as shown in part (a) of
Further, in the state that the accommodating container Ta is positioned in the second position, the container-side contact 23 and the main assembly-side contact 405 also do not contact each other, and the container driving gear 302 does not engage with the gear portion 20a. Incidentally, as shown in part (b) of
On the other hand, when the accommodating container Ta is mounted in the first position, the driving motor 606 is driven, so that the container stopper 601 is moved in a direction (rear side) in which the container stopper 601 is retracted from the accommodating container Ta. Then, the container stopper 601 is moved to the first movement position where the container stopper 601 does not interfere with the accommodating container Ta. As shown in part (b) of
When the accommodating container Ta is pulled in to the first position, as described above, the sensor 406 contacts the one end of the accommodating container Ta, so that the accommodating container Ta is detected by the sensor 406. Further, the container-side contact 23 contacts the main assembly-side contact 405, so that communication can be established between the accommodating container Ta and the apparatus main assembly. Further, the container driving gear 302 engages with the gear portion 20a, so that the drive can be transmitted from the container driving gear 302 to the gear portion 20a. Further, when the accommodating container Ta is mounted in the first position, as shown in part (b) of
In this embodiment described above, it is possible to suppress exertion of the loads on the various devices connected between the mounted accommodating container Ta and the apparatus main assembly during the transportation of the image forming apparatus. That is, in the case that the accommodating container Ta is transported by being packed with the apparatus main assembly 200A, the accommodating container Ta is mounted in the apparatus main assembly 200A in a state that the container stopper 601 is moved to the second movement position. As a result, the position of the accommodating container Ta is in a state of being regulated to the second position. At the second position, the sensor 406 does not contact the one end of the accommodating container Ta and the container-side contact 23 does not contact the main assembly-side contact 405, and further, the container driving gear 302 is not connected with the gear portion 20a. For this reason, it is possible to suppress exertion of the loads on the various devices such as the sensor 406, the container-side contact 23, the main assembly-side contact 405, the container driving gear 302, and the gear portion 20a due to vibration during the transportation of the image forming apparatus.
Further, after installation of the image forming apparatus, the container stopper 601 is retracted from the second movement position to the first movement position, so that the accommodating container Ta is mountable in the first position which is a normal mounting position. As described above, the accommodating container Ta is pulled in to the first position by the container pulling-in lever 403 through retraction of the container stopper 601. Incidentally, even if there is no container pulling-in lever 403, when the container stopper 601 is retracted to the first movement position and the user pushes the accommodating container Ta, the accommodating container Ta is mountable in the first position.
Further, also in this embodiment, even after the accommodating container Ta is mounted in the first position and then the image forming apparatus is driven, the position of the accommodating container Ta is similarly regulated to the second position again, and as described above, the package transportation can be performed. That is, the driving motor 606 is reversely rotated, so that the container stopper 601 is moved to the first movement position. As a result, the position of the accommodating container Ta can be regulated to the second position again.
Incidentally, in this embodiment, a constitution in which the stopper unit 600 is provided, in a position opposing the accommodating container Ta, at a downstream end portion (the one end portion) with respect to the inserting direction of the accommodating container Ta and the container stopper 601 is expanded and contracted in the inserting direction of the accommodating container Ta was described. However, the container stopper 601 may only be required to have a constitution in which the container stopper 601 is capable of regulating the position of the accommodating container Ta to the second position and can permit movement of the accommodating container Ta to the first position. For this reason, for example, a container stopper may be provided at an upstream end portion or an intermediary portion with respect to the inserting direction of the accommodating container Ta so as to be projected and retracted in the radial direction of the accommodating container Ta, and the accommodating container Ta may be provided with a member which contacts the projected container stopper but which does not contact the retracted container stopper. Further, in the case that the container stopper contacts this member, the position of the accommodating container Ta is regulated to the second position, and in the case that the container stopper does not contact this member, the position of the accommodating container Ta is made movable to the second position.
Third Embodiment will be described using
As shown in with reference to
The toner supplying portion 400B includes a driving device 700 and a supply pipe 70. A constitution in which the toner is supplied from the accommodating container Ta to the developing device 100a through the supply pipe 70 is the same constitution as the constitution in the Second Embodiment and therefore will be omitted from detailed description. The driving device 700 for the accommodating container Ta is similar to those for the accommodating containers Tb-Td, and therefore, the driving device 700 for the accommodating container Ta will be described as a representative.
The driving device 700 includes, as shown in parts (a) and (b) of
Here, the driving motor 701 is the driving source capable of outputting drive for discharging the toner from the accommodating container Ta. That is, the drive of the driving motor 701 is, as described specifically later, transmitted to the container driving gear 302 through the pinion gear 702, the idler gear 703, the base gear 704, the pendulum gear 706, the container drive transmission gear 707, and a container driving shaft 307. The container driving gear 302 is, as shown in
In this embodiment, the container stopper 601 is moved from the second movement position to the first movement position by the drive of the driving motor 701 used in drive for discharging the toner. That is, in this embodiment, the driving source is common to movement of the container stopper 601 and discharge of the toner from the accommodating container Ta.
Incidentally, the container stopper 601 is, similarly as in the Second embodiment, provided on a part (rear-side plate 202) of the apparatus main assembly so as to be movable relative to the accommodating container Ta. Further, at a first movement position, the container stopper 601 permits mounting of the accommodating container Ta in the first position, and at a second movement position different from the first movement position, the container stopper 601 regulates the position of the accommodating container Ta to the second position. The container stopper 601 is moved from the second movement position to the first movement position by normal rotation of the driving motor 701, and is moved from the first movement position to the second movement position by reverse rotation of the driving motor 701.
Thus, in order to perform the movement of the container stopper 601 and the discharge of the toner by the drive of the driving motor 701, the drive of the driving motor 701 is switched by a switching portion 710. The switching portion 710 includes the pendulum link 705, the pendulum gear 706, a projection 705b and a regulating portion 601b. The pendulum link 705 is rotatably supported at a base end portion thereof by the rotation shaft 709 of the base gear 704.
The pendulum gear 706 is supported rotatably about a pendulum link shaft 705a at an end portion of the pendulum link 705. The pendulum gear 706 is disposed at a position where a tooth thereof engages with a tooth of the base gear 704. As a result, when the base gear 704 is rotated, the pendulum link 705 and the pendulum gear 706 are also rotated about the rotation shaft 709, and the pendulum gear 706 performs a rotational operation about a pendulum link shaft 705a.
The projection 705b is formed so as to project from the free end portion of the pendulum link 705 toward an end portion of the container stopper 601. The regulating portion 601b is provided at the end portion of the container stopper 601 and engages with the projection 705b, and thus regulates (limits) rotation of the pendulum link 705. The regulating portion 601b moves together with the container stopper 601 and engages with the projection 705b when the container stopper 601 is in the second movement position, and thus regulates (limits) rotation of the pendulum link 705. On the other hand, when the container stopper 601 is in the first movement position, engagement of the regulating portion 601b with the projection 705 is eliminated, so that the regulating portion 601 permits the rotation of the pendulum link 705.
Part (a) of
However, as shown in part (a) of
That is, in the case that the rotation of the pendulum link 705 is limited by the pendulum link 705, the rotational driving force of the driving motor 701 is transmitted only to the slide gear 602 through the pinion gear 702, the idler gear 703, the base gear 704, and the pendulum gear 706. When the slide gear 602 is rotationally driven, similarly as in the Second Embodiment, by engagement of the helical groove 601a and the projection 602a, the container stopper 601 is slid, so that the container stopper 601 is retracted from the second movement position, where the container stopper 601 interferes with the accommodating container Ta, to the first movement position.
At this time, as shown in part (b) of
That is, the rotational driving force of the driving motor 701 is transmitted only to the container drive transmission gear 707 through the pinion gear 702, the idler gear 703, the base gear 704, and the pendulum gear 706. Rotation of the container drive transmission gear 707 is transmitted to the container driving gear 302 through the container driving shaft 307. The container driving gear 302 is, as shown in
On the other hand, in the case that the container stopper 601 is moved to the second movement position again, the driving motor 701 is reversely rotated. Then, the pendulum link 705 is rotated from the position of part (b) of
Also in this embodiment, the accommodating container Ta is mounted in the apparatus main assembly 200A in a state that the container stopper 601 is moved to the second movement position. As a result, the position of the accommodating container Ta is in a state of being regulated to the second position, so that it is possible to suppress exertion of the loads on the various devices connected between the mounted accommodating container Ta and the apparatus main assembly during the transportation of the image forming apparatus.
Further, after installation of the image forming apparatus, the container stopper 601 is retracted from the second movement position to the first movement position, so that the accommodating container Ta is mountable in the first position which is a normal mounting position. That is, the driving motor 701 is normally rotated, so that the container stopper 601 is moved to the first movement position as described above. At this time, similarly as in the Second Embodiment, the accommodating container Ta is pulled in to the first position by the container pulling-in lever 403 (parts (a)-(d) of
That is, in this embodiment, by using only the normal rotation of the driving motor 701, the sliding (movement) of the container stopper 601 and the rotational drive of the container driving gear 302 are sequentially carried out. As a result, the drive is carried out after the accommodating container Ta is moved to the first position which is a normal mounting position, so that the drive can be started after the gear portion 20a and the container driving gear 302 are engaged with each other. Further, by reversely rotating the driving motor 701, the container stopper 601 can also be returned to the second movement position where the container stopper 601 interferes with the accommodating container Ta.
In this embodiment, the rotational drive of the toner accommodating container Ta and the drive of the container stopper 601 for regulating the position of the toner accommodating container Ta to the second position during package transportation can be carried out by the same driving source. For this reason, cost reduction can be realized compared with the Second Embodiment.
Next, using
Parts (a) and (b) of
As an outline, the regulating member 500 is mounted on a cover member 28 provided on a discharge side of each of the toner accommodating containers Ta-Td for the respective colors and in a state that the regulating member 500 is sandwiched between the cover member 28 and the abutting portion 402a, the toner accommodating container T is transported in the mounted and packed state.
As shown in parts (a) and (b) of
As shown in parts (a)-(c) of
A positional relationship between the toner accommodating container T and related component parts when the toner accommodating container T is transported in the mounted and packed state will be described using parts (a) and (b) of
Part (a) of
In this state, the container pulling-in lever 403 is in a position between those of parts (c) and (d) of
Further, as shown in part (b) of
As in a constitution of this embodiment, when the regulating member 500 is mounted on the one end of the toner accommodating container T, the force of the container pulling-in lever 403 and a force for extending the toner accommodating container T are not exerted, and therefore, the toner accommodating container T is prevented from being deformed due to standing thereof for a long term.
Also at positions of the discharge opening 21a of the flange 21 and the discharge opening 4a of the shutter 4, these positions are not influenced by a full length of the toner accommodating container T, so that the positional relationship can be ensured with high accuracy.
As shown in
In the above-described constitution, when the apparatus main assembly is transported, the toner accommodating container T is mounted in the apparatus main assembly in a state that the regulating member 500 is mounted on the cover member 28 of the toner accommodating container T, so that the toner accommodating container T can be mounted in and packed with the apparatus main assembly with no leakage of the toner from the toner accommodating container T. In the case that the toner accommodating container T is in a first mounting position for toner supply, when the locking claws 512 are lightly pinched, the regulating member 500 can be easily demounted. Further, also after the operation of the apparatus main assembly, the regulating member 500 is mounted on the toner accommodating container T, so that the toner accommodating container T can be returned to a state that the toner accommodating container T is transported in the mounted and packed state.
Next, using
Specifically, the adhesive tape 600 is used for fixing the regulating member 500 to the cover member 28. The toner accommodating container T is provided in the image forming apparatus in a state that the regulating member 500 is fixed to the cover member 28 by the adhesive tape 600. Further, in the case that the toner supply is carried out, the adhesive tape 600 is peeled off of the toner accommodating container T, so that the regulating member 500 can be demounted from the cover member 28, and therefore, the toner accommodating container T may only be required to be mounted in in the image forming apparatus again after the adhesive tape 600 is removed.
In the above-described constitution, when the apparatus main assembly is transported, the toner accommodating container T is mounted in the apparatus main assembly in a state that the regulating member 500 is mounted on the cover member 28 of the toner accommodating container T, so that the toner accommodating container T can be mounted in and packed with the apparatus main assembly with no leakage of the toner from the toner accommodating container T.
While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. The scope of the following claims is to be accorded the broadest interpretation so as to encompass all such modifications and equivalent structures and functions.
This application claims the benefit of Japanese Patent Application No. 2017-163430 filed on Aug. 28, 2017, which is hereby incorporated by reference herein in its entirety.
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|---|---|---|---|
| 2017-163430 | Aug 2017 | JP | national |
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