Patent Application
20190089853
The present invention relates to a medium discharging device which discharges a medium, and an image reading apparatus provided with the medium discharging device.
A scanner, as an example of an image reading apparatus, may be configured in which an automatic feeder of a document (also referred to as an automatic document feeder (ADF)) as a medium is provided, and in which automatic feeding and reading of a plurality of documents are performed. The plurality of transported documents are read in an image reading unit provided on the downstream side in a transport direction of the automatic feeder.
In such a scanner, there is a case in which a medium discharging device is provided so that a pair of discharging rollers is provided on the downstream side of the image reading unit, and documents are discharged to the outside of the device and are stacked up in order of discharging in a discharged paper accommodating tray (also referred to as a discharged paper stacker, or the like in some cases) which accommodates the discharged plurality of documents (for example, refer to JP-A-2010-62839).
In addition, as the discharged paper accommodating tray, a discharged paper accommodating tray is known in which an accommodated state and an extended state can be switched. For example, in a multistage discharged paper accommodating tray, a tray on a free end side (sub tray) is accommodated in a tray on a base end side (base tray), and the sub tray is pulled out from the base tray when being used, and is used by extending a medium receiving face.
However, an accommodating space for accommodating the sub tray is formed in the base tray, and there is a concern that a discharged medium may enter the accommodating space, or a back side of the accommodating space in a state in which the sub tray is pulled out from the base tray. In particular, in a case in which a discharged medium is a small medium of a card size, or the like, the problem of entering easily occurs. Furthermore, there is a case in which the medium receiving face is inclined upward toward the free end side, and when a small-sized medium is discharged to such an upwardly inclined face, the discharged medium tends to return to the base tray side, and the problem of entering easily occurs. Furthermore, in a case in which a stopper for preventing jumping out of a medium is provided at a tip end of the discharged paper accommodating tray, the problem of entering easily occurs since the discharged medium comes into contact with the stopper, and is bounced.
An advantage of some aspects of the invention is to reliably avoid entering of a discharged medium into a tray.
According to an aspect of the invention, there is provided a medium discharging device which includes a discharging unit that discharges a medium toward a medium discharging direction in which a medium is discharged, and a medium receiving tray that receives a medium discharged by the discharging unit, and is switched between an extended state and an accommodated state, in which the medium receiving tray includes a base tray, a main extending unit that is located on a medium discharging direction side compared to the base tray in an extended state, and is accommodated or extended, and at least one sub-extending unit that is located on the medium discharging direction side, compared to the main extending unit in an extended state, and is accommodated or extended, and in which the base tray forms an accommodating space for accommodating at least the one sub-extending unit, the base tray being provided with a first protrusion portion protruding toward the accommodating space.
According to the aspect, the medium receiving tray which can be switched between the extended state and the accommodated state is provided with the base tray, the main extending unit, and the sub-extending unit, and since the accommodating space for accommodating at least one sub-extending unit is formed in the base tray, there is a concern that a discharged medium may enter the accommodating space, or a back side of the accommodating space when the sub-extending unit is extended. However, according to the aspect, since the first protrusion portion which protrudes toward the accommodating space is provided in the accommodating space in the base tray, it is possible to regulate entering of a medium into the accommodating space, or the back side of the accommodating space using the first protrusion portion.
In this case, in the first aspect, it is preferable that the main extending unit includes a second protrusion portion which is provided at a position facing the accommodating space, protrudes to the accommodating space, and includes a portion overlapping with the first protrusion portion in a thickness direction of the receiving tray, and the overlapping portion is maintained regardless of an extended position of the main extending unit.
According to the aspect, since the second protrusion portion which protrudes to the accommodating space, and includes a portion which is overlapped with the first protrusion portion in the thickness direction of the medium receiving tray is provided at the position facing the accommodating space in the main extending unit, and the overlapping of the first protrusion portion with the second protrusion portion is maintained regardless of the extended position of the main extending unit, it is possible to regulate entering of a medium into the accommodating space or the back side of the accommodating space, even in a state in which the main extending unit is in a half-extended state, not only in a fully extended state. In this manner, it is possible to provide a medium discharging device in which it is possible to reliably avoid entering of a medium into the accommodating space or the back side of the accommodating space.
In this case, in the second aspect, it is preferable that one of the first protrusion portion and the second protrusion portion is configured of a first rib which extends in the medium discharging direction, and the other one of the first protrusion portion and the second protrusion portion is configured of a second rib which extends in a direction intersecting the medium discharging direction.
According to the aspect, since any one of the first protrusion portion and the second protrusion portion is configured of the first rib which extends in the medium discharging direction, and the other thereof is configured of the second rib which extends in the direction which intersects the medium discharging direction, it is possible to more reliably suppress entering of a medium into the accommodating space or the back side of the accommodating space.
In this case, in the third aspect, it is preferable that the first rib includes a plurality of first ribs provided in the direction intersecting the medium discharging direction with an interval, and a maximum disposing interval between the plurality of first ribs is smaller than a size of a medium, the size of which is smallest in a medium width direction intersecting the medium discharging direction, in mediums discharged by the discharging unit.
According to the aspect, since the plurality of first ribs are provided in the direction intersecting the medium discharging direction with an appropriate interval, and the maximum disposing interval in the plurality of first ribs is smaller than the size of the medium of which the size in the medium width direction as the direction intersecting the medium discharging direction is smallest, in mediums which can be recorded by a recording unit, and can be discharged by the discharging unit, it is possible to preferably regulate entering of a medium into the accommodating space, or the back side of the accommodating space, regardless of a size of a medium.
In this case, in any one of the first to fourth aspects, it is preferable that the sub-extending unit includes a tip end extending portion located on the most tip end in the medium discharging direction in an extended state, and a stopper portion slidable with respect to the tip end extending portion, and is switched between a regulating posture and an accommodated posture along the medium receiving face, the regulating posture being a posture in which jumping out of a medium is regulated by the stopper portion rotating to form a face intersecting a medium receiving face.
According to the aspect, since the stopper portion which can be switched between the regulating posture in which jumping out of a medium is regulated, by forming a face which intersects the medium receiving face by rotating and the accommodated posture as a posture which goes along the medium receiving face is provided, it is possible to suppress jumping out of a medium from a medium receiving tray at a time of discharging the medium using the stopper.
In this case, in the fifth aspect, it is preferable that a plurality of recessed portions are formed in the tip end extending portion in a sliding direction of the stopper portion, and a protrusion portion is formed in the stopper portion, the protrusion portion entering one of the recessed portions when the stopper portion is switched from the accommodated posture to the regulating posture.
According to the aspect, since the plurality of recessed portions are formed in the tip end extending portion along a sliding direction of the stopper portion, and the protrusion portion which enters the recessed portion is formed in the stopper portion when the stopper portion is switched from the accommodated posture to the regulating posture, it is possible to reliably hold the stopper portion at a desired position using engaging of the recessed portion with the protrusion portion. In particular, it is possible to suppress a positional deviation of the stopper portion which occurs when a discharged medium presses the stopper portion.
In this case, in the fifth or sixth aspect, it is preferable that the medium discharging device include a switching unit switching postures of the stopper portion and a control unit controlling the switching unit, in which the control unit pushes down the stopper portion on an upstream side or a downstream side in the medium discharging direction from the regulating posture based on size information of a discharged medium, in a case in which a tip end of the discharged medium passes over a position of the stopper portion when the medium is discharged to the medium receiving tray.
According to the aspect, since the switching unit which performs switching of a posture of the stopper portion, and the control unit which controls the switching unit are provided, and the control unit pushes down the stopper portion on the upstream side or the downstream side in the medium discharging direction from the regulating posture, in a case in which the tip end of a medium which is discharged goes over a position of the stopper portion when being discharged to the medium receiving tray, based on size information of the medium which is discharged, it is possible to avoid a problem in which the stopper portion interrupts discharging of a long medium when the long medium is discharged.
In this case, in any one of the fifth to seventh aspects, it is preferable that the base tray is accommodated or extended with respect to a housing of the medium discharging device, and a locking unit is provided that locks the base tray, the main extending unit, and the sub-extending unit to an accommodated state by the stopper portion being switched from the regulating posture to the accommodated posture, and releases the locking by the stopper portion being switched from the accommodated posture to the regulating posture.
According to the aspect, since the base tray can be accommodated or extended with respect to the housing of the medium discharging device, and a locking unit which locks the base tray, the main extending unit, and the sub-extending unit to an accommodated state by switching the stopper portion from the regulating posture to the accommodated posture, and releases the locking by switching the stopper portion from the accommodated posture to the regulating posture is provided, it is possible to avoid a problem in which the medium receiving tray enters the extended state unintendedly, when carrying the device, for example. In addition, since the stopper portion performs an operation of the locking unit, it is not necessary to provide an exclusive operating member, and it is possible to suppress a rise in cost.
According to another aspect of the invention, there is provided an image reading apparatus which includes a reading unit that reads a face of a medium; and the medium discharging device according to any one of the first to eighth aspects that is provided on a downstream side of the reading unit in a medium transport direction.
According to the aspect, in the image reading apparatus, it is possible to obtain the same operational effect as that of any one of the above described first to eighth aspects.
The invention will be described with reference to the accompanying drawings, wherein like numbers reference like elements.
Hereinafter, an embodiment of the invention will be described based on drawings. The same reference numerals are attached to the same configuration in each embodiment, descriptions are made only in the first embodiment, and descriptions of configurations in embodiments thereafter will be omitted.
In X-Y-Z coordinates illustrated in each diagram, an X direction is an apparatus width direction and a sheet width direction, a Y direction is a medium transport direction in the image reading apparatus, and a Z direction is a direction orthogonal to the Y direction, and a direction which is approximately orthogonal to a face of a medium which is transported. In addition, a −Y direction side is set to a front face side of the apparatus, and a +Y direction side is set to a rear face side of the apparatus, in each diagram.
When referring to
The cover unit 16 is attached to a higher part on a rear face side of the lower unit 12 so as to rotate with respect to the lower unit 12. As illustrated in
A discharging port 28 which discharges a medium P is provided on an apparatus front face side of the lower unit 12. The lower unit 12 is provided with the medium receiving tray 22 which can be pulled out toward the apparatus front side from the discharging port 28. The medium receiving tray 22 can be switched between an accommodated state of being accommodated in a base portion of the lower unit 12 (refer to
Subsequently, a medium feeding path 24 in the scanner 10 will be described with reference to
In the medium feeding path 24, the medium mounting face 16a, a feeding roller 30, a separating roller 32, a pair of transport rollers 34, an image reading unit 36 as a “reading unit”, a pair of discharging rollers 20 as a “discharging unit”, and the medium receiving tray 22 are provided in order from an upstream side toward a downstream side in a feeding direction. A medium P is fed to the image reading unit 36 along the medium feeding path 24, and is discharged to the medium receiving tray 22 after at least one face thereof is read in the image reading unit 36.
The feeding roller 30 is configured so as to be driven in a rotating manner using a driving source which is not illustrated. An outer peripheral face of the feeding roller 30 is formed of a high friction material (for example, elastomer, or the like, such as rubber). The separating roller 32 is provided at a position which faces the feeding roller 30. The separating roller 32 is provided in a state of being urged against the feeding roller 30 by the urging unit (not illustrated). An outer peripheral face of the separating roller 32 is formed of a high friction material (for example, elastomer, or the like, such as rubber), similarly to the feeding roller 30.
A torque limiter 38 is provided in the separating roller 32. The separating roller 32 is configured so as to accommodate a driving torque in a direction opposite (counterclockwise direction in
The pair of transport rollers 34 is provided with a transport driving roller 34a, and a transport driven roller 34b which is rotatably driven by the transport driving roller 34a. In the embodiment, the transport driving roller 34a is configured so as to be driven in a rotating manner using a driving source (not illustrated).
The image reading unit 36 is provided on the downstream side of the pair of transport rollers 34. Here, the image reading unit 36 is provided with a higher reading unit 40 which is provided in the higher unit 14 so as to face a top face of a medium P transported along the medium feeding path 24, and a lower reading unit 42 which is provided in the lower unit 12 so as to face a lower face of the medium P transported along the medium feeding path 24. The higher reading unit 40 and the lower reading unit 42 are configured as a reading unit, and are configured as a contact-type image sensor module (CISM) as an example.
The pair of discharging rollers 20 is provided with a discharging driving roller 44, and a discharging driven roller 46 which is rotatably driven by the discharging driving roller 44. The discharging driving roller 44 is driven in a rotating manner using a driving source (not illustrated).
Here, when referring to
When the pair of discharging roller 20 discharges a thin medium in the scanner 10, there is a case in which a rear end of the medium P remains in the discharging driving roller 44. In addition, when discharging a thin medium, the auxiliary roller 50 can reliably separate the rear end of the medium P from the discharging driving roller 44 by pushing out the rear end of the medium P in a discharging direction. Since the interval 52 is provided between the auxiliary roller 50 and the discharging driving roller 44, it is possible to prevent a situation in which the auxiliary roller 50 comes into contact with the discharging driving roller 44, and is worn away when the auxiliary roller 50 idly rotates with respect to the driving shaft 48.
As an example, a control unit 54 as a “controller” is provided in the lower unit 12. The control unit 54 is configured as an electric circuit which is provided with a plurality of electronic components. The control unit 54 controls the higher reading unit 40 and the lower reading unit 42. In addition, the control unit 54 controls a driving source (not illustrated) such as a driving motor which drives the feeding roller 30, the transport driving roller 34a, and the discharging driving roller 44 in a rotating manner.
The control unit 54 is configured so as to control a transport of a medium P, and an image reading operation in the scanner 10. The control unit 54 may control an operation which is necessary to execute a document reading operation in the scanner 10, based on an instruction from the outside (PC, or the like).
A configuration of the medium receiving tray 22 will be described with reference to
The base tray 56 is configured so as to slide with respect to the lower unit 12, and the base tray can be switched between state of being accommodated in the lower unit 12 (refer to
The first sub-extending unit 61 is attached to the main extending unit 58 so as to slide. In addition, the first sub-extending unit 61 is configured so as to switch between an accommodated state of being accommodated in the main extending unit 58 (refer to
Accordingly, the medium receiving tray 22 can set the base tray 56, the main extending unit 58, the first sub-extending unit 61, and the tip end extending portion 62 which are accommodated in the lower unit 12, as illustrated in
Subsequently, the base tray 56 will be described with reference to
The first protrusion portion 66 is provided with a plurality of first rib 68 which extend in the apparatus width direction, for example. The plurality of first ribs 68 are formed in the recessed portion 56c with an appropriate interval in the apparatus depth direction. In
A disposing interval L2 (refer to
As an example, in a case in which the medium P is transported and is discharged to the medium receiving tray 22, by adjusting the short side of the card-shaped medium P to the apparatus width direction in the scanner 10, the disposing interval L2 becomes the maximum disposing interval in the first rib 68, and in a case in which the medium P is transported and is discharged to the medium receiving tray 22 by adjusting the long side of the card-shaped medium to the apparatus width direction, the disposing interval L3 is set to be the maximum disposing interval in the first rib 68.
A plurality of protrusion portions 56d which protrude toward the inside are provided on an inner face in the apparatus width direction, in the side wall portion 56b, and a groove portion 56e which extends along the apparatus depth direction is provided on an outer face in the apparatus width direction. The groove portion 56e is engaged with a guide portion (not illustrated) which is provided in the lower unit 12. Due to this, the base tray 56 can move with respect to the lower unit 12 in a sliding manner.
Subsequently, the main extending unit 58 will be described with reference to
When the main extending unit 58 is attached to the base tray 56, a protrusion portion 56d of the base tray 56 is accommodated in the groove portion 58b. Since the protrusion portion 56d can relatively move in the apparatus depth direction in the inside of the groove portion 58b, it is possible to move the main extending unit 58 with respect to the base tray 56 in a sliding manner. In addition, in a state in which the main extending unit 58 is attached to the base tray 56, the base tray 56 covers at least a part of the main extending unit 58 from above.
A recessed portion 58c which is recessed downwardly is formed at a center portion in the apparatus width direction in the main extending unit 58. The recessed portion 56c of the base tray 56 and the recessed portion 58c of the main extending unit 58 are provided at a corresponding position in the apparatus width direction, in a state in which the main extending unit 58 is attached to the base tray 56. In addition, a rectangular space is formed when the recessed portion 56c and the recessed portion 58c are combined. The space functions as an accommodating space 70 (refer to
A second protrusion portion 72 is provided at a position which faces a center portion in the apparatus width direction at an end portion of the main extending unit 58 on the rear face side in the apparatus depth direction, that is, a position facing the accommodating space 70. The second protrusion portion 72 is provided with a plurality of second ribs 74 which extends along the apparatus width direction. The second rib 74 protrudes upwardly in the apparatus height direction, that is, toward the base tray 56 side. The plurality of second ribs 74 is disposed in order of ribs 74a, 74b, and 74c in line along the apparatus width direction with an appropriate interval in the apparatus width direction.
An interval 76 is provided between the second ribs 74a and 74b, and between the second ribs 74b and 74c, respectively. The interval 76 in the apparatus width direction is set to a size through which the first ribs 68b and 68c can pass the interval 76 when the main extending unit 58 is caused to slide in the apparatus depth direction with respect to the base tray 56. In addition, a length of the second ribs 74a and 74c in the apparatus width direction is set to be smaller than the disposing interval L1 between the first ribs 68a and 68b, and the disposing interval L1 between the first ribs 68c and 68d. A length of the second rib 74b in the apparatus width direction is set to be smaller than the disposing interval L2 between the first ribs 68b and 68c.
Here, when referring to
A relationship between the first rib 68 and the second rib 74 will be described with reference to
Since the length of the second ribs 74a and 74c in the apparatus width direction is set to be smaller than the disposing interval L1 between the first ribs 68a and 68b, and the disposing interval L1 between the first ribs 68c and 68d, and the length of the second rib 74b in the apparatus width direction is set to be smaller than the disposing interval L2 between the first ribs 68b and 68c, the first rib 68 and the second rib 74 do not interfere even when the main extending unit 58 is moved in the apparatus depth direction with respect to the base tray 56 in a sliding manner. (refer to
Here, as illustrated in
Subsequently, when referring to
Here, there is a case in which a medium P is tilted in the apparatus depth direction when being discharged from the discharging port 28, and being bounced toward the base tray 56 side due to the stopper portion 64. Even in a state in which the medium P which is bounced toward the base tray 56 side due to the stopper portion 64 is tilted in the apparatus depth direction in the half-extended state of the main extending unit 58, it is possible to prevent the medium P from entering inside the accommodating space 70, when at least one of the first ribs 68a and 68d is in contact with at least a part of the tilted medium P.
Since the first rib 68 and the second rib 74 have an overlapping portion in the thickness direction of the medium receiving tray 22, the second rib 74 regulates entering of the medium P in the inside of the accommodating space 70, or the back side of the accommodating space 70 in the apparatus depth direction, even when the medium P enters between the first ribs 68a and 68d in the apparatus width direction. In this manner, it is possible to regulate entering of the medium P into the accommodating space 70 using the first protrusion portion 66 (first rib 68) and the second protrusion portion 72 (second rib 74), even in a half-extended state of the main extending unit 58 with respect to the base tray 56.
Subsequently, when referring to
Even in the fully extended state of the main extending unit 58, at least one of the first ribs 68a and 68d is in contact with at least a part of the medium P, and can suppress entering of the medium P into the accommodating space 70, when the medium P is discharged from the discharging port 28, and is bounced toward the base tray 56 side due to the stopper portion 64.
In addition, since the second ribs 74a, 74b, and 74c are located on the front face side in the apparatus depth direction, even when a medium P enters between the first ribs 68a and 68d in the apparatus width direction, it is possible for the second rib 74 to more reliably regulate entering of the medium P into the accommodating space 70, or the back side of the accommodating space 70, in the apparatus depth direction.
Here, since the first rib 68 and the second rib 74 have an overlapping portion in the thickness direction of the medium receiving tray 22, and the first rib 68 and the second rib 74 can relatively move without interfering with each other in the apparatus depth direction, overlapping between the first rib 68 and the second rib 74 is maintained regardless of an extended position of the main extending unit 58 with respect to the base tray 56. In this manner, it is possible to regulate entering of a medium P into the accommodating space 70, or the back side of the accommodating space 70 in both of the half-extended state and the fully-extended state of the main extending unit 58. Regarding a stopper portion
Subsequently, the stopper portion 64 will be described with reference to
The stopper portion 64 is attached to the tip end extending portion 62. When referring to
A modification example of the stopper portion 64 will be described with reference to
As illustrated in
Meanwhile, when causing the stopper 80 which takes a regulating posture to rotate on the medium receiving face 62a side using the rotating shaft 84 as a fulcrum, the protrusion portion 86 rotates in a direction separating from the medium receiving face 62a, and engaged state with the recessed portion 82 is released. As a result, the locked state of the slider 78 is released, and the slide can move in a sliding manner in the apparatus depth direction on the medium receiving face 62a.
It is set to a configuration in which the first protrusion portion 66 is provided with the plurality of first ribs 68 which extend in the apparatus depth direction, and the second protrusion portion 72 is provided with the plurality of second ribs 74 which extend in the apparatus width direction; however, a configuration in which the first protrusion portion 66 is provided with the plurality of second ribs 74, and the second protrusion portion 72 is provided with the plurality of first ribs 68 may be adopted, instead of the configuration.
A second embodiment which is a medium discharging device 88 will be described with reference to
The medium discharging device 88 illustrated in
The medium receiving tray 92 is configured of a tray member 92a and a tray member 92b, as an example. The tray member 92a can slide with respect to the lower unit 12, and can be switched between an accommodated state and an extended state. The tray member 92b can slide with respect to the tray member 92a, and can be switched between an accommodated state and an extended state. In addition, the stopper portion 90 is attached to a tip end side in the apparatus depth direction of the tray member 92b.
The switching unit 94 is provided with a driving motor 96 which is provided in the lower unit 12, a driving pulley 98, a transmission pulley 100, a driven pulley 102, and driving belts 104 and 106, as an example. The driving pulley 98 is attached to a driving shaft of the driving motor 96, and is rotatably driven by the driving motor 96. The driving belt 104 is hung over the driving pulley 98 and the transmission pulley 100. The driven pulley 102 is attached to a rotating shaft of the stopper 90a. The driving belt 106 is hung over the transmission pulley 100 and the driven pulley 102.
By rotating the driving motor 96 in a normal rotation direction or a reverse rotation direction, it is possible to transmit a rotation driving power of the driving motor 96 to the driven pulley 102 through the driving pulley 98, the driving belt 104, the transmission pulley 100, and the driving belt 106, and switch the stopper 90a from a regulating posture to an accommodated posture, or from the accommodated posture to the regulating posture. A dashed line in
The control unit 54 switches the stopper 90a from a regulating posture to an accommodated posture by driving the driving motor 96 in a case in which a tip end of a medium P which is discharged goes over a position of the stopper 90a of the stopper portion 90, when the medium P is discharged to the medium receiving tray 92, based on size information of the medium P which is discharged. In this manner, it is possible to avoid a situation in which the stopper portion 90 interferes with discharging of a medium P, in a case in which the medium P is long in a discharging direction. In addition, size information of a medium P which is discharged may also be obtained from a detecting signal of the medium P using a medium detecting sensor (not illustrated) which is provided in the scanner 10, not only from driver information which is input to the control unit 54.
Subsequently, a third embodiment which is a medium discharging device 108 will be described with reference to
A stopper portion 112 is provided with a stopper 114, a slider 116, a locking pin 118 as a “locking unit”, and an urging unit 120. The stopper 114 is rotatably attached to the slider 116 using a rotating shaft 122 as a fulcrum, and can be switched between a regulating posture and an accommodated posture. In addition, the stopper 114 is provided with an engaging portion 124 which can be engaged with the locking pin 118. The urging unit 120 is configured as a tension spring, as an example, and one end thereof is connected to the slider 116, and the other end is connected to the locking pin 118. In addition, the urging unit 120 urges the locking pin 118 toward the slider 116 side.
A hole portion 12a in which the locking pin 118 can be accommodated is provided in the lower unit 12 which is a “housing”.
When referring to
Subsequently, when referring to
When summarizing the above descriptions, the medium discharging devices 18, 88, and 108 are provided with the pair of discharging rollers 20 which discharges a medium P, and the medium receiving trays 22, 92, and 110 which accommodate the medium P discharged by the pair of discharging rollers 20, and can be switched between the extended state and the accommodated state, the medium receiving trays 22, 92, and 110 are provided with the base tray 56, the main extending unit 58 which is located on the front face side in the apparatus depth direction as the medium discharging direction side, compared to the base tray 56 in the extended state, and which can be accommodated or extended, and at least one sub-extending unit 60 which is located on the front face side in the apparatus depth direction as the medium discharging direction side compared to the main extending unit 58 in the extended state, and can be accommodated or extended, and in the base tray 56, the accommodating space 70 for accommodating at least one sub-extending unit 60 is formed, and the first protrusion portion 66 which protrudes toward the accommodating space 70 is provided.
According to the above configuration, since the medium receiving trays 22, 92, and 110 which can be switched between the extended state and the accommodated state are provided with the base tray 56, the main extending unit 58, and the sub-extending unit 60, and the accommodating space 70 for accommodating at least one sub-extending unit 60 is formed in the base tray 56, when the sub-extending unit 60 is extended, there is a concern that a medium P which is discharged may enter the accommodating space 70, or the back side of the accommodating space 70. However, in the configuration, since the first protrusion portion 66 which protrudes toward the accommodating space 70 is formed in the accommodating space 70 in the base tray 56, entering of a medium in to the accommodating space 70, or the back side of the accommodating space 70 can be regulated by the first protrusion portion 66.
The second protrusion portion 72 which protrudes to the accommodating space 70, and has a portion overlapping with the first protrusion portion 66 in the thickness direction of the medium receiving tray 22 is provided at a position facing the accommodating space 70 in the main extending unit 58, and overlapping of the first protrusion portion 66 and the second protrusion portion 72 is maintained regardless of an extending position of the main extending unit 58. According to the configuration, it is possible to regulate entering of a medium P into the accommodating space 70 or the back side of the accommodating space 70, even in a state in which the main extending unit 58 is in a half-extended state, not only in a fully extended state. As described above, it is possible to provide medium discharging devices 18, 88, and 108 in which it is possible to reliably avoid entering of a medium P into the accommodating space 70 or the back side of the accommodating space 70.
Any one of the first protrusion portion 66 and the second protrusion portion 72 is configured of the first rib 68 which extends in the apparatus depth direction as the medium discharging direction, and the other thereof is configured of the second rib 74 which extends in the apparatus width direction as a direction intersecting the medium discharging direction. According to the configuration, it is possible to more reliably suppress entering of a medium P into the accommodating space 70 or the back side of the accommodating space 70.
A plurality of the first ribs 68 are provided with an appropriate interval in the apparatus width direction as the direction intersecting the medium discharging direction, and the maximum disposing interval L2 or L3 in the plurality of first ribs 68 is smaller than a size of a medium of which a size in the medium width direction as a direction intersecting the medium discharging direction is smallest, in mediums P which can be discharged by the pair of discharging rollers 20. According to the configuration, it is possible to preferably regulate entering of a medium P into the accommodating space 70, or the back side of the accommodating space 70, regardless of a size of the medium P.
The sub-extending unit 60 is configured of the tip end extending portion 62 which is located at the lowest portion in the medium discharging direction in the extended state, that is, on the front face side in the apparatus depth direction, and the stopper portions 64, 90, and 112 which can slide with respect to the tip end extending portion 62, and can be switched between the regulating posture which regulates jumping out of a medium P by forming a face intersecting the medium receiving face 62a by rotating and the accommodated posture as a posture which goes along the medium receiving face 62a. According to the configuration, it is possible to suppress jumping out of the medium P from the medium receiving trays 22, 92, and 110 when discharging the medium P using the stoppers 80, 90a, and 114.
The plurality of recessed portions 82 are formed in the tip end extending portion 62 along the sliding direction of the stopper portion 64, and the protrusion portion 86 which enters the recessed portion 82 when switching the stopper portion 64 from the accommodated posture to the regulating posture is formed in the stopper portion 64. According to the configuration, it is possible to reliably hold the stopper portion 64 a desired position using engaging between the recessed portion 82 and the protrusion portion 86. In particular, it is possible to suppress a positional deviation of the stopper portion 64 which occurs when a medium P which is discharged presses the stopper portion 64.
The switching unit 94 which switches a posture of the stopper portion 90, and the control unit 54 which controls the switching unit 94 are provided, and the control unit 54 pushes down the stopper 90a of the stopper portion 90 on the upstream side or the downstream side in the medium discharging direction from the regulating posture, in a case in which a tip end of a medium P which is discharged goes over a position of the stopper portion 90 when being discharged to the medium receiving tray 92, based on size information of the medium P which is discharged. According to the configuration, it is possible to avoid a problem in which the stopper portion 90 interrupts discharging of a long medium P when the long medium is discharged.
The base tray 56 can be accommodated or extended with respect to the lower unit 12 which configures a housing of the medium discharging device 108, the base tray 56, the main extending unit 58, and the sub-extending unit 60 are locked so as to be accommodated, by switching the stopper portion 112 from the regulating posture to the accommodated posture, and the locking pin 118 which release locking by switching the stopper portion 112 from the accommodated posture to the regulating posture is provided. According to the configuration, it is possible to avoid a problem in which the medium receiving tray 110 is unintendedly extended when carrying the scanner 10, for example. In addition, since the locking pin 118 is operated by the stopper portion 112, it is not necessary to provide an exclusive operating member, and it is possible to suppress rise in cost of the apparatus.
The scanner 10 is provided with the image reading unit 36 which reads a face of a medium P, and medium discharging devices 18, 88, and 108 which are provided on the downstream side of the image reading unit 36 in the medium transport direction.
| Number | Date | Country | Kind |
|---|---|---|---|
| 2016-129754 | Jun 2016 | JP | national |
This application is a continuation of U.S. application Ser. No. 15/630,532, filed Jun. 22, 2017, which claims priority to Japanese Patent Application No. 2016-129754, filed Jun. 30, 2016, the entireties of which are incorporated by reference herein.
| Number | Date | Country | |
|---|---|---|---|
| Parent | 15630532 | Jun 2017 | US |
| Child | 16191989 | US |
