JP7056039B2 - Media support device and printing device - Google Patents

Description

The present invention relates to a medium support device that supports a medium such as paper and a printing device provided with the medium support device.

Generally, an image forming apparatus such as a copying machine or a printer is provided with a paper ejection tray for ejecting paper after an image is formed (see, for example, Patent Document 1). Such a paper output tray can support a plurality of sheets in a stacked state, and includes a paper output tray main body and an extension tray that is retractably stored in the paper output tray main body. When the paper discharged to the output tray is longer than the output tray main body in the output direction, the extension tray is pulled out from the output tray main body to increase the length of the output tray in the output direction. It can be extended.

Japanese Patent Application Laid-Open No. 2002-226119

By the way, in the paper ejection tray as described above, since the paper support surface in the paper ejection tray main body is flat, the positions in the width direction orthogonal to the paper ejection direction of the paper to be ejected on the support surface vary. There is a problem that it will end up.

The present invention has been made by paying attention to such a problem existing in the prior art. An object of the present invention is to provide a medium support device and a printing device capable of suppressing variation in the position of the medium discharged on the support surface in the width direction.

Hereinafter, means for solving the above problems and their actions and effects will be described.
The medium support device for solving the above problems includes a support portion having a support surface for supporting the ejected medium, a storage position supported by the support portion and housed in the support portion, and the medium in the support portion. An extension support portion that can be moved from the tip end side in the discharge direction to an extension position that has been moved so as to extend in the discharge direction is provided, and both ends of the support portion on the tip end side in the discharge direction are provided. A pair of first protrusions protruding upward from the height of the support surface are provided so as to incline upward toward the discharge direction side, and both ends of the extension support portion on the tip end side in the discharge direction are provided. A pair of second protrusions protruding upward from the height of the support surface are provided so as to incline upward toward the discharge direction side, and the pair of the second protrusions are orthogonal to the discharge direction. It is located inside the pair of the first protrusions in the width direction.

According to this configuration, the extension support portion is in the extension position, and the width of the medium discharged to the support surface is narrower than the distance between the pair of first protrusions and wider than the distance between the pair of second protrusions. In this case, the medium discharged on the support surface has both ends in the width direction riding on the pair of second protrusions while its movement in the width direction is restricted by the pair of first protrusions. Then, since the medium bends so that the central portion in the width direction hangs down due to its own weight, an inward force acts on the medium. Therefore, it is possible to suppress variations in the position of the medium discharged on the support surface in the width direction.

Further, even when the extension support portion is in the retracted state, both ends of the discharged medium ride on the first protruding portion and the second protruding portion, and the central portion in the width direction bends, so that the medium has a waist (rigidity). Is supported by the support part. Therefore, even when the extended support portion is in the retracted state (short state), it is possible to prevent the tip portion of the medium protruding from the support portion from hanging downward and the medium from falling due to its gravity.

In the medium support device, it is preferable that a pair of wall portions extending along the discharge direction are provided at both ends of the support portion in the width direction so as to face each other with the support surface interposed therebetween.

According to this configuration, the movement of the medium discharged on the support surface in the width direction can be restricted by the pair of wall portions.
In the medium support device, when the extension support portion is in the extension position, the inner surface of the pair of the first protrusions in the width direction is narrower than the distance between the pair of the first protrusions. It is preferable to restrict the movement of the medium in the width direction.

According to this configuration, the movement of the medium discharged to the support surface in the width direction can be suitably regulated by the inner side surfaces of the pair of first protrusions in the width direction.
In the medium support device, the pair of the second protrusions are arranged so as to be adjacent to the inside of the pair of the first protrusions in the width direction in a state where the extension support portion is in the storage position. It is preferable that the height from the support surface is lower than that of the pair of the first protrusions.

According to this configuration, when both ends of the medium discharged to the support surface in the width direction ride on the pair of first protrusions to the pair of second protrusions, the center portion of the medium in the width direction is based on its own weight. It can be bent so that it hangs down in a well-balanced manner in the width direction.

In the medium support device, it is preferable that the pair of the second protrusions of the extension support portion are connected by a concave curved surface.
According to this configuration, when both ends of the medium discharged to the support surface in the width direction ride on the pair of second protrusions, the central portion in the width direction of the medium is bent so as to hang deeper by its own weight. Can be done.

In the medium support device, it is preferable that at least one of the pair of the first protrusions and the pair of the second protrusions has a lower height toward the inside in the width direction.

According to this configuration, the width direction of the medium discharged to the support surface with respect to the pair of first protrusions and the pair of second protrusions whose height becomes lower toward the inside in the width direction. When both ends of the vehicle ride on, the medium can be bent so that the central portion in the width direction hangs smoothly under its own weight.

In the medium support device, it is preferable that a pair of upstream side protrusions are provided on the upstream side in the discharge direction from the pair of the pair of first protrusions on the support surface in a state of being separated in the width direction. ..

According to this configuration, when both ends of the medium discharged to the support surface in the width direction ride on the pair of upstream protrusions, the medium is hung down by its own weight at the center portion in the width direction at an earlier stage. Can be bent.

In the medium support device, it is preferable that the upper surfaces of the pair of upstream protrusions are inclined so as to be lowered toward the inside in the width direction.
According to this configuration, when both ends of the medium discharged to the support surface in the width direction ride on the pair of upstream protrusions, the medium is more effectively hung down by its own weight at the center portion in the width direction. Can be bent.

A printing device that solves the above problems is a printing unit that is arranged in a housing and prints on a medium, a discharge port that is provided in the housing and discharges the medium printed by the printing unit, and the discharge. A support member for supporting the medium discharged from the outlet is provided, and the support member is configured by the medium support device having the above configuration.

According to this configuration, the same effect as that of the medium support device can be obtained.
In the printing apparatus, it is preferable that the discharge port is provided with a pair of main body side protrusions separated from each other in the width direction.

In the printing apparatus, it is preferable that the upper surfaces of the pair of protrusions on the main body side are inclined so as to be lowered toward the inside in the width direction.
According to such a configuration, when both ends of the medium discharged from the discharge port in the width direction ride on the pair of main body side protrusions, the medium is effectively moved to the center portion in the width direction at an earlier stage. It can be bent so that it hangs down under its own weight.

In the printing apparatus, it is preferable that the main body side protrusion is arranged inside the pair of the first protrusions in the width direction.
According to such a configuration, the curved shape of the medium can be maintained even on the support portion.

The perspective view of the inkjet printer of one Embodiment. The perspective view which shows the state when the extension support part is in a storage position in the discharge tray of an inkjet printer. Front view of FIG. The perspective view which shows the state when the extension support part is in an extension position in the ejection tray of an inkjet printer. Front view of FIG. Front view of the output tray of the modified example. Front view of the output tray of the modified example. The perspective view which shows the state when the extension tray is in a storage position in the discharge tray of a modification example. FIG. 3 is a perspective view showing a state when the extension tray is in the extension position in the discharge tray of FIG. The perspective view which shows the state when the extension tray is in a storage position in the discharge tray of a modification example. FIG. 3 is a perspective view showing a state when the extension tray is in the extension position in the discharge tray of FIG. The perspective view which shows the state when the extension tray is in a storage position in the discharge tray of a modification example. The perspective view which shows the state when the extension tray is in an extension position in the discharge tray of FIG. A perspective view of an inkjet printer of a modified example.

Hereinafter, an embodiment in which the printing apparatus is embodied in an inkjet printer will be described with reference to the drawings.
As shown in FIG. 1, the inkjet printer 11 as an example of a printing device has a housing 12 having predetermined lengths in height, depth, and width in a state of being installed at a place of use, and a housing. A document reading device 50 including an automatic document feeder 13 arranged on the 12 is provided.

The automatic document feeder 13 includes a set unit 14 capable of setting a plurality of documents G in a stacked state, and a discharge unit 15 arranged under the set unit 14. Then, the plurality of documents G set in the set unit 14 in a laminated state are sequentially inverted and sent to the discharge unit 15 via the document feed path (not shown) to the upper end portion in the housing 12. It is read by an arranged reading unit (not shown).

On the front portion of the housing 12, in order from the bottom side to the top, an opening / closing cover 16, a mounting port 18 on which a paper cassette 17 containing paper P as an example of a flexible medium is mounted, and printing. A discharge port 19 for discharging the finished paper P and an operation unit 20 for performing various operations are provided. Further, a discharge tray 21 as an example of a medium support device constituting a support member for supporting the printed paper P discharged from the discharge port 19 is attached to and detached from the front portion of the housing 12 so as to project forward. It is attached freely.

In this case, the front surface of the housing 12 has a height and a width, and refers to a side surface on which the user mainly operates the inkjet printer 11. Further, in the present embodiment, the direction in which the paper P is ejected from the ejection port 19 is defined as the ejection direction X, and the direction orthogonal to the ejection direction X is defined as the width direction Y. The discharge direction X and the width direction Y substantially follow the horizontal plane.

As shown in FIG. 1, the opening / closing cover 16 is opened / closed when an ink container (not shown) containing ink is attached / detached to / from the housing 12. In the housing 12, a carriage 22 that reciprocates along the width direction Y and a recording head 23 as an example of a printing portion supported by the lower end portion of the carriage 22 are arranged. Ink is supplied to the recording head 23 from the ink container (not shown) described above.

Further, as shown in FIG. 1, a projecting portion 60 projecting upward and rearward on the back side of the housing 12 is provided on the back surface portion of the housing 12, and a rear paper feeding unit (not shown) is provided inside the projecting portion 60. (Omitted) and hinges (not shown) are provided. The protrusion 60 has an opening at the upper tip as a supply port for the paper (medium) P to the rear paper feed unit, and a cover for opening and closing the opening is arranged at the opening. The hinge holds the document reading device 50 so that it can be opened and closed by rotating it with respect to the housing 12.

An arc-shaped convex portion 61 centered on the rotation axis of the hinge is formed on the back surface side of the document reading device 50, and the arc-shaped convex portion 61 formed on the document reading device 50 is formed on the protruding portion 60 of the housing 12. An arcuate arcuate recess 62 is formed in which the arcuate shape is slidable. The document reading device 50 opens and closes by using a hinge as a rotation axis and an arc convex portion 61 on the document reading device 50 side sliding along the arc recess 62 of the housing 12.

Then, the paper P sequentially supplied from the paper cassette 17 or the rear paper feed unit to the area facing the recording head 23 is reciprocated in the width direction Y together with the carriage 22 while being conveyed in the discharge direction X by the transport unit (not shown). Printing is performed on the paper P by injecting ink from the recording head 23 toward the paper P. The paper P printed by the recording head 23 (printed paper P) is discharged onto the discharge tray 21 from the discharge port 19, and then sequentially stacked and supported by the discharge tray 21.

As shown in FIGS. 1 and 2, the discharge tray 21 has a substantially rectangular plate shape, and is a main tray as an example of a support portion having a support surface 31a for supporting the paper P discharged from the discharge port 19. 31 and an extension tray 32 as an example of an extension support portion supported by the main tray 31 are provided. The extension tray 32 has a shorter length in the width direction Y than the main tray 31.

The extension tray 32 has a storage position (position shown in FIG. 2) stored in the main tray 31 and an extension position (position shown in FIG. 2) that is moved so as to extend in the discharge direction X from the tip end side of the paper P in the discharge direction X in the main tray 31. It can be moved to and from the position shown in FIG. 4). In this case, when the extension tray 32 is pulled out from the main tray 31 and moved from the storage position to the extension position, the inclination of the extension tray 32 with respect to the horizontal plane becomes slightly larger upward.

In the discharge tray 21, the extension tray 32 is moved to the extension position when the length of the discharge direction X of the paper P discharged from the discharge port 19 is relatively long (for example, when the paper P is vertically oriented in A4 size). Is used. On the other hand, in the discharge tray 21, the extension tray 32 moves to the storage position when the length of the discharge direction X of the paper P discharged from the discharge port 19 is relatively short (for example, when the paper P is A4 size in landscape orientation). Will be used.

As shown in FIGS. 2 and 3, a rectangular recess 33 is formed in the central portion of the support surface 31a of the main tray 31. On the inner bottom surface of the recess 33, a pair of ribs 34 extending in the discharge direction X are formed apart from each other in the width direction Y. The discharge direction X side in the recess 33 is open. A pair of wall portions 35 extending along the discharge direction X are provided at both ends of the main tray 31 in the width direction Y so as to face each other with the support surface 31a interposed therebetween.

At both ends of the main tray 31 in the width direction Y on the tip end side of the discharge direction X, a pair of first projecting portions 36 projecting upward from the height of the support surface 31a are inclined upward toward the discharge direction X side. It is provided as follows. In this case, the upper surface of each first protruding portion 36 is a first inclined surface 36a inclined so as to increase from the height of the support surface 31a toward the discharge direction X.

At both ends of the extension tray 32 in the width direction Y on the tip end side of the discharge direction X, a pair of second protrusions 37 protruding upward from the height of the support surface 31a are inclined upward toward the discharge direction X side. It is provided as follows. In this case, the upper surface of each of the second protruding portions 37 is a second inclined surface 37a inclined so as to increase from the height of the support surface 31a toward the discharge direction X.

The pair of second protrusions 37 are located inside the pair of first protrusions 36 in the width direction Y. That is, in the state where the extension tray 32 is in the storage position, the pair of second protrusions 37 are arranged so as to be adjacent to the inside of the pair of first protrusions 36 in the width direction Y. That is, in the width direction Y, the distance between the pair of second protrusions 37 is shorter than the distance between the pair of first protrusions 36. The first inclined surface 36a of the first protruding portion 36 adjacent to each other in the width direction Y and the second inclined surface 37a of the second protruding portion 37 are flush with each other.

In the present embodiment, the distance between the pair of wall portions 35 is set to be slightly longer than the length of the long side of the A4 size paper P, and the distance between the pair of first protruding portions 36 is set to be slightly longer than the length of the long side of the A4 size paper P. It is set to be shorter than the length of the long side and longer than the length of the short side, and the distance between the pair of second protrusions 37 is slightly shorter than the length of the short side of the A4 size paper P. It is set. The distance between the pair of second protrusions 37 is set to be shorter than the length Y in the width direction of the paper that can be used in the inkjet printer 11.

Next, the operation of the discharge tray 21 when the inkjet printer 11 is used will be described.
As shown in FIGS. 1 and 4, when printing A4 size vertical paper P by the inkjet printer 11, first, the extension tray 32 in the discharge tray 21 is pulled out from the main tray 31 and is stored from the storage position. Move to the extension position. Subsequently, when the operation unit 20 is operated, the paper P is printed, and the printed paper P is ejected from the ejection port 19 onto the ejection tray 21.

That is, the printed paper P discharged from the discharge port 19 onto the discharge tray 21 first moves on the support surface 31a along the discharge direction X, and then passes between the pair of first protrusions 36 to form a pair. Toward the second protrusion 37. At this time, when the moving direction of the paper P is shifted in the width direction Y with respect to the ejection direction X, the end portion of the paper P in the width direction Y is located on the shifted side in the moving direction of the paper P. Since the protrusion 36 abuts on the inner side surface 36b in the width direction Y, the displacement of the paper P in the moving direction is suppressed. That is, the inner side surface 36b in the width direction Y of the pair of first protrusions 36 restricts the movement of the paper P whose width is narrower than the distance between the pair of first protrusions 36 in the width direction Y.

Subsequently, the paper P moving from between the pair of first protrusions 36 to the pair of second protrusions 37 is moved along the discharge direction X, and as shown in FIGS. 4 and 5, the pair of second sheets is moved. Ride on the protrusion 37 from the second inclined surface 37a. At this time, the paper P is supported by a pair of second protrusions 37 at both ends in the width direction Y. Therefore, the paper P is subjected to a force in the width direction Y from both ends toward the center due to its own weight, so that the paper P bends in an arc shape so that the center portion in the width direction Y is lowered.

As a result, the paper P is curved so that the central portion between the pair of second protrusions 37 and the central portion of the paper P in the width direction Y face each other in the vertical direction, and the paper P is curved in the width direction by the pair of second protrusions 37. It is supported in a balanced state of Y. That is, even if the paper P is supported by the pair of second protrusions 37 in a state where the position is displaced in the width direction Y, the displacement of the position in the width direction Y is suppressed by its own weight. Therefore, even when the plurality of sheets P are continuously printed, the variation in the position of the width direction Y among the plurality of sheets P supported in the laminated state by the ejection tray 21 is suppressed.

On the other hand, as shown in FIGS. 1 and 2, when printing A4 size landscape paper P by the inkjet printer 11, first, the extension tray 32 in the ejection tray 21 is moved from the extension position to the storage position. And store it in the main tray 31. Subsequently, when the operation unit 20 is operated, the paper P is printed, and the printed paper P is ejected from the ejection port 19 onto the ejection tray 21.

That is, the printed paper P discharged from the discharge port 19 onto the discharge tray 21 is moved onto the support surface 31a along the discharge direction X. At this time, when the moving direction of the paper P is shifted in the width direction Y with respect to the ejection direction X, the end portion of the paper P in the width direction Y is a wall portion located on the shifted side in the moving direction of the paper P. Since it comes into contact with 35, the displacement of the paper P in the moving direction is suppressed. That is, the pair of wall portions 35 restricts the movement of the paper P whose width is narrower than the distance between the pair of wall portions 35 in the width direction Y.

It should be noted that the A4 size horizontal paper P basically does not reach the pair of first protrusions 36 and the pair of second protrusions 37 even if the paper P is discharged onto the discharge tray 21. However, in the unlikely event that the paper P is ejected onto the ejection tray 21 vigorously, the pair of first protrusions 36 and the pair of second protrusions 37 function as stoppers for the paper P.

According to the embodiment described in detail above, the following effects can be obtained.
(1) In the discharge tray 21, the pair of second protrusions 37 are located inside the pair of first protrusions 36 in the width direction Y. Therefore, the extension tray 32 is in the extension position, and the width of the paper P discharged to the support surface 31a is narrower than the distance between the pair of first protrusions 36 and smaller than the distance between the pair of second protrusions 37. When it is wide, the paper P discharged on the support surface 31a has both ends in the width direction Y riding on the pair of second protrusions 37 while its movement in the width direction Y is restricted by the pair of first protrusions 36. .. Then, since the paper P bends so that the central portion in the width direction Y hangs down due to its own weight, a force toward the inside of the width direction Y acts on the paper P. Therefore, it is possible to suppress variations in the position of the paper P discharged on the support surface 31a in the width direction Y. That is, it is possible to suppress the variation in the position of the width direction Y among the plurality of sheets P discharged and stacked on the support surface 31a. Further, even when the extension tray 32 is stored, the discharged paper P has both ends in the width direction Y riding on the first protruding portion 36 and the second protruding portion 37, and the central portion in the width direction Y bends. P is supported by the main tray 31 with a waist (rigidity). Therefore, even when the extension tray 32 is in the stored state (short state), it is possible to prevent the tip portion of the paper P protruding from the main tray 31 from hanging downward and the paper P from falling due to its gravity.

(2) In the discharge tray 21, a pair of wall portions 35 extending along the discharge direction X are provided at both ends of the main tray 31 in the width direction Y so as to face each other with the support surface 31a interposed therebetween. Therefore, the movement of the paper P discharged on the support surface 31a in the width direction Y can be restricted by the pair of wall portions 35.

(3) In the discharge tray 21, when the extension tray 32 is in the extended position, the inner side surface 36b of the pair of first protrusions 36 in the width direction Y is wider than the distance between the pair of first protrusions 36. The movement of the narrow paper P in the width direction Y is restricted. Therefore, the movement of the paper P discharged to the support surface 31a in the width direction Y can be suitably restricted by the inner side surface 36b of the pair of first protrusions 36 in the width direction Y.

(Change example)
The above embodiment may be changed as follows. Further, the configuration included in the above embodiment and the configuration included in the following modification example may be arbitrarily combined, or the configurations included in the following modification example may be arbitrarily combined.

As shown in FIG. 6, in the discharge tray 21, the pair of first protrusions 36 and the pair of second protrusions 37 may be configured so that the height becomes lower toward the inside in the width direction Y. .. By doing so, when both ends of the paper P discharged on the support surface 31a ride on the pair of first protrusions 36 and the pair of second protrusions 37 in the width direction Y, the paper P is loaded in the width direction. The central portion of Y can be flexed so as to hang down smoothly under its own weight. In this case, the pair of first protruding portions 36 and the pair of second protruding portions 37 may be configured so that their heights gradually decrease toward the inside in the width direction Y. Alternatively, in the discharge tray 21, one of the pair of first protrusions 36 and the pair of second protrusions 37 may be configured so that the height becomes lower toward the inside in the width direction Y. .. By doing so, the paper is discharged to the support surface 31a with respect to the pair of the first protruding portion 36 and the pair of the second protruding portions 37 whose height becomes lower toward the inside in the width direction Y. When both ends of the width direction Y of the paper P ride on, the paper P can be bent so that the central portion of the width direction Y hangs down smoothly under its own weight. In this case, one of the pair of first protrusions 36 and the pair of second protrusions 37 may be configured so that the height gradually decreases toward the inside of the width direction Y.

As shown in FIG. 7, in the discharge tray 21, the pair of second protrusions 37 may be configured so that the height from the support surface 31a is lower than that of the pair of first protrusions 36. By doing so, when both ends of the paper P discharged to the support surface 31a in the width direction Y ride on the pair of the first protruding portions 36 to the pair of the second protruding portions 37, the paper P is placed in the width direction. The central portion of Y can be bent so as to hang down in the width direction Y in a well-balanced manner due to its own weight.

As shown in FIGS. 8 and 9, in the discharge tray 21, a pair of upstream side protrusions 40 are separated from the pair of first protrusions 36 on the support surface 31a on the upstream side in the discharge direction X in the width direction Y. It may be provided in a state. In this case, the pair of upstream protrusions 40 face each other in the width direction Y with the recess 33 interposed therebetween, and are arranged so that the distance in the width direction Y is slightly narrower than that of the pair of second protrusions 37. Further, the pair of upstream protrusions 40 have a wedge shape, and the upper surface thereof is inclined so that the height becomes lower toward the inside in the width direction Y. By doing so, when both ends of the paper P discharged to the support surface 31a in the width direction Y ride on the pair of upstream protrusions, the paper P can be effectively transferred to the width direction Y at an earlier stage. The central part can be bent so that it hangs down under its own weight.

As shown in FIGS. 10 and 11, in the discharge tray 21, a concave curved surface 32a may be formed between the pair of second protrusions 37 in the extension tray 32. By doing so, when both ends of the paper P discharged to the support surface 31a in the width direction Y ride on the pair of second protrusions 37, the central portion of the paper P in the width direction Y becomes deeper due to its own weight. It can be bent so that it hangs down.

As shown in FIGS. 12 and 13, the discharge tray 21 may be configured by combining the discharge tray 21 shown in FIGS. 8 and 9 described above and the discharge tray 21 shown in FIGS. 10 and 11 described above. good. That is, in the discharge tray 21, a pair of upstream side protrusions 40 are provided on the upstream side in the discharge direction X from the pair of first protrusions 36 on the support surface 31a in a state of being separated from each other in the width direction Y, and the extension tray 32. A concave curved surface 32a may be formed between the pair of second protrusions 37. By doing so, both the effects of the discharge tray 21 shown in FIGS. 8 and 9 described above and the effects of the discharge tray 21 shown in FIGS. 10 and 11 described above can be obtained.

As shown in FIG. 14, the pair of protrusions 40A on the main body side may be provided at the discharge port 19 of the inkjet printer 11 in a state of being separated in the width direction Y. In this case, for example, the upstream side protrusion 40 provided on the support surface 31a of the discharge tray 21 shown in FIG. 8 may or may not be present. The main body side protrusion 40A has the same shape as the upstream side protrusion 40 provided on the support surface 31a of the discharge tray 21 shown in FIG. 8, and the upper surface of the pair of main body side protrusions 40A has a width direction Y. It is preferable that it is inclined so as to be lowered toward the inside. According to such a configuration, when both ends of the paper P discharged from the discharge port 19 in the width direction Y ride on the pair of main body side protrusions 40A, the width of the paper P is effectively spread at an earlier stage. The central portion of the direction Y can be bent so as to hang down due to its own weight. The main body side protrusion 40A is preferably arranged inside the pair of first protrusions 36 provided on the main tray 31 in the width direction Y, and is the main body when viewed from the discharge port 19. It is preferable that the wedge-shaped inclined surface of the side protrusion 40A is continuous with the upper surface of the rib 34 provided on the main tray 31. According to such a configuration, the curved shape of the paper P can be maintained even on the main tray 31.

-The pair of wall portions 35 may be omitted.
When the extension tray 32 is in the extended position, the inner side surface 36b in the width direction Y of the pair of first protrusions 36 is necessarily the width direction of the paper P whose width is narrower than the distance between the pair of first protrusions 36. There is no need to regulate the movement of Y.

-The medium is not limited to the paper P, but may be a plastic film or the like.
A medium support device (ejection tray 21) may be applied to the ejection unit 15 in which the scanned document G (medium) is ejected in the automatic document feeder 13.

-The printing device may be a laser printer.

11 ... Inkjet printer as an example of a printing device, 12 ... Housing, 13 ... Automatic document feeder, 14 ... Set part, 15 ... Discharge part, 16 ... Open / close cover, 17 ... Paper cassette, 18 ... Mounting port, 19 ... Discharge port, 20 ... Operation unit, 21 ... Discharge tray as an example of a medium support device constituting a support member, 22 ... Carriage, 23 ... Recording head as an example of a printing unit, 31 ... Main as an example of a support unit Tray, 31a ... Support surface, 32 ... Extension tray as an example of extension support portion, 32a ... Concave curved surface, 33 ... Recession, 34 ... Rib, 35 ... Wall portion, 36 ... First protrusion, 36a ... First inclined surface , 36b ... Inner surface, 37 ... Second protrusion, 37a ... Second inclined surface, 40 ... Upstream protrusion, G ... Original, P ... Paper as an example of medium, X ... Discharge direction, Y ... Width direction.

Claims (13)

A support portion having a support surface for supporting the discharged medium,
It is movable between the storage position supported by the support portion and housed in the support portion and the extension position of the support portion that is moved so as to extend in the discharge direction from the tip end side of the medium in the discharge direction. With an extension support,
At both ends of the support portion on the tip end side in the discharge direction, a pair of first projecting portions projecting upward from the height of the support surface are provided so as to incline upward toward the discharge direction side.
A pair of second protruding portions projecting upward from the height of the support surface are provided at both ends of the extended support portion on the tip end side in the discharge direction so as to incline upward toward the discharge direction side. ,
The pair of the second protrusions is located inside the pair of the first protrusions in the width direction orthogonal to the discharge direction, and the pair of the said portions is in a state where the extension support portion is in the storage position. A medium support device characterized by being arranged adjacent to the inside of the first protrusion in the width direction. A pair of wall portions extending along the discharge direction are provided at both ends of the support portion in the width direction so as to face each other with the support surface interposed therebetween.
The medium support device according to claim 1, wherein the pair of the first protrusions are located inside the pair of the wall portions in the width direction. In the state where the extension support portion is in the storage position, the inner side surface in the width direction of the pair of the wall portions restricts the movement of the medium having a width narrower than the distance of the pair of the wall portions in the width direction. 2. The medium according to claim 2 , wherein the adjacent first protrusions and second protrusions function as stoppers for restricting the movement of the tip of the medium in the discharge direction in the discharge direction. Support device. Old claim 3
In the state where the extension support portion is in the extension position, the inner side surface in the width direction of the pair of the first protrusions is narrower than the distance between the pair of the first protrusions in the width direction of the medium. The medium support device according to any one of claims 1 to 3, wherein the movement of the medium is restricted. The claim is characterized in that the pair of the second protrusions is lower in height from the support surface than the pair of the first protrusions in a state where the extension support portions are in the storage position. The medium support device according to any one of 1 to 4. Claims 1 to 5, wherein at least one of the pair of the first protrusions and the pair of the second protrusions has a lower height toward the inside in the width direction. The medium support device according to any one of the above. The medium support device according to claim 6, wherein the pair of the second protrusions of the extension support portion are connected by a concave curved surface. 1. The medium support device according to any one of claims 7. The medium support device according to claim 8, wherein the upper surfaces of the pair of upstream protrusions are inclined so as to be lowered toward the inside in the width direction. A printing unit that is placed inside the housing and prints on the medium,
An discharge port provided in the housing and from which the medium printed by the printing unit is discharged,
A support member for supporting the medium discharged from the discharge port is provided.
The printing apparatus, wherein the support member is composed of the medium support apparatus according to any one of claims 1 to 9. The printing apparatus according to claim 10, wherein the discharge port is provided with a pair of protrusions on the main body side in a state of being separated from each other in the width direction. 11. The printing apparatus according to claim 11, wherein the upper surface of the pair of protrusions on the main body side is inclined so as to be lowered toward the inside in the width direction. The printing apparatus according to claim 12, wherein the main body-side protrusion is arranged inside the pair of first protrusions in the width direction.

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