Medium conveying device and image reading device

Abstract

To stabilize a posture of a second medium 22 when it is set, thereby improving a setting property.SOLUTION: A medium conveying device 4 includes: a feeding unit 7 having a first feeding port 61 at an upper portion of a housing 5 for feeding a first medium 21 into the housing, and a transport unit 9 for conveying the fed first medium in a conveying direction (F). The feeding unit includes a support unit 13 extending above the first feeding port and having a support surface 12 for supporting the first medium to be fed to the first feeding port, and a narrow-width medium feeding unit 27 for feeding a second medium 22 having a width dimension smaller than that of the first medium 21, and the narrow-width medium feeding unit 27 is disposed at the first feeding port 61 and includes a second feeding port 28 for feeding the second medium 22 into the housing, and guide units 31, 32 for guiding widthwise ends 29, 30 of the second medium.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a medium transport device and an image reading device. [Background technology]

[0002] An example of a conventional device of this type is described in Patent Document 1. Patent Document 1 discloses an image reading device that has two receipt insertion slots for feeding receipts of different width sizes. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent Publication No. 2021-1037 Summary of the Invention [Problem to be solved by the invention]

[0004] When a long receipt is inserted into the receipt insertion slot, the receipt may buckle or tip forward, resulting in an unstable position when inserted, or the receipt may be transported skewed. Furthermore, if the image reading device has a U-turn path, the receipt ejected via the U-turn path may bend or buckle and be pulled back into the receipt insertion slot, or may tip forward. In other words, the receipt may be unstable during transport, making it difficult to handle. The above-mentioned prior art does not contain any description that takes into consideration the above-mentioned problem, and in this respect, it can be said that there is room for improvement. [Means for solving the problem]

[0005] In order to solve the above problem, the media conveying device of the present invention comprises a feeding unit having a first feeding port at the top of the housing for feeding a first medium into the housing, and a transporting unit for transporting the first medium fed from the feeding unit in a transport direction along a transport path, wherein the feeding unit comprises a support portion extending upward from the first feeding port and having a support surface for supporting the medium fed to the first feeding port, and a narrow media feeding unit for feeding a second medium having a smaller width dimension than the first medium, and the narrow media feeding unit is arranged at the first feeding port and comprises a second feeding port for feeding the second medium into the housing and a guide portion for guiding the widthwise end of the second medium.

[0006] Another medium transport device according to the present invention includes a feed unit having a feed opening at an upper part of a housing for feeding a medium into the housing, a transport unit that transports the medium fed from the feed unit in a transport direction along a transport path, and a discharge unit having a discharge opening for discharging the medium transported by the transport unit outside the housing, wherein the feed unit includes a support unit that extends upward from the feed opening and has a support surface that supports the medium fed to the feed opening, and the transport path includes a straight path extending from the feed opening from the upper part to the lower part of the housing, and a downstream end of the straight path in the transport direction that extends upward. and a U-turn path that extends toward the discharge outlet located below the feed port of the housing, the discharge outlet being located below the feed port of the housing, the discharge section being the outer surface of the housing, extending from the discharge outlet side toward the feed port, and having a loading surface on which the medium discharged from the discharge outlet is placed, and a media holding section that is provided at the discharge outlet and regulates the posture of the medium that is transported along the U-turn path and discharged from the discharge outlet, the media holding section comprising a base section located on the discharge outlet side, and a posture regulating section that extends from the base section along the support surface to above the supply port.

[0007] Another medium transport device according to the present invention includes a feeding unit having a first feeding opening at an upper part of a housing for feeding a first medium into the housing, a transport unit that transports the first medium fed from the feeding unit in a transport direction along a transport path, and a discharge unit having a discharge opening that discharges the first medium transported in the transport direction outside the housing, wherein the feeding unit includes a support unit that extends above the first feeding opening and has a support surface that supports the first medium fed to the first feeding opening, and the transport path includes a straight path that extends from the first feeding opening to a lower part of the housing, and a U-turn path that exists from a downstream end of the straight path in the transport direction toward the discharge opening located above, and the discharge opening is located below the first feeding opening of the housing. The discharge section is an outer surface of the housing, extends from the discharge outlet side toward the first feed outlet, and has a loading surface on which the first medium discharged from the discharge outlet is placed, and is equipped with a narrow media feeding section for feeding a second medium having a width dimension smaller than that of the first medium, the narrow media feeding section being arranged at the first feed outlet and comprising a second feed outlet for feeding the second medium into the housing and a guide section for guiding the widthwise end of the second medium, and a media holding section being provided at the discharge outlet and regulating the posture of the second medium transported along the U-turn path and discharged from the discharge outlet, the media holding section comprising a base section located on the discharge outlet side, and a posture regulating section extending from the base section along the support surface to above the first feed outlet.

[0008] In addition, the image reading device of the present invention is characterized by comprising a medium conveying device of any one of the first to third aspects described below, and a reading unit that reads an image on the first medium or the second medium. [Brief explanation of the drawings]

[0009] [Figure 1] 1A and 1B are perspective views corresponding to the medium conveying device and the image reading device according to the first and third embodiments. [Figure 2] 10A and 10B are side views corresponding to the medium conveying device and the image reading device according to the first and third embodiments. [Figure 3] FIG. 2 is a perspective view corresponding to the medium conveying device and the image reading device according to the first embodiment. [Figure 4] FIG. 2 is a side cross-sectional view corresponding to the medium conveying device and the image reading device according to the first embodiment. [Figure 5] FIG. 10 is a perspective view of a main part of a narrow medium feeding section in the first and third embodiments. [Figure 6] FIG. 10 is a cross-sectional side view of the main part of the narrow-width medium feeding section of the first and third embodiments. [Figure 7] FIG. 10 is a perspective view of a narrow medium feeding unit according to the first and third embodiments. [Figure 8] FIG. 10 is a rear view of the narrow width medium feeding unit according to the first and third embodiments. [Figure 9] FIG. 10 is a rear view of the main part of the narrow medium feeding section of the first and third embodiments. [Figure 10] FIG. 10 is a perspective view of a main part of a small-width medium feeding section showing a modified example of the first embodiment. [Figure 11] FIG. 11 is a perspective view of a medium pressing unit according to a third embodiment. [Figure 12] 11 is a cross-sectional side view of a main part of a medium pressing portion of a third embodiment. [Figure 13] FIG. 11 is a front view showing a state in which the medium pressing unit of the third embodiment is retracted. [Figure 14] FIG. 10 is a perspective view corresponding to a medium conveying device and an image reading device according to a second embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0010] The present invention will now be briefly described. In order to solve the above problem, a media conveying device according to a first aspect of the present invention comprises a feeding unit having a first feeding port at the top of a housing for feeding a first medium into the housing, and a transporting unit for transporting the first medium fed from the feeding unit in a transport direction along a transport path, wherein the feeding unit comprises a support portion extending above the first feeding port and having a support surface for supporting the first medium fed to the first feeding port, and a narrow media feeding unit for feeding a second medium having a smaller width dimension than the first medium, and the narrow media feeding unit is arranged at the first feeding port and comprises a second feeding port for feeding the second medium into the housing, and a guide portion for guiding the widthwise end of the second medium.

[0011] According to this aspect, the feeding unit includes a support portion extending above the first feeding opening and having a support surface that supports the first medium to be fed to the first feeding opening. The feeding unit further includes a small-width medium feeding portion for feeding a second medium having a width dimension smaller than that of the first medium. The small-width medium feeding portion is disposed at the first feeding opening and includes a second feeding opening for feeding the second medium into the housing, and a guide portion for guiding a widthwise end of the second medium. This allows the second medium, even if it is narrow and relatively long, such as a receipt, to be set by passing the leading edge of the second medium through the second feed port of the small-width medium feeder, with a portion of the second medium supported on the support surface of the support unit. This stabilizes the position of the second medium when it is set, improving ease of setting. Furthermore, because the second medium is fed to the transport path following the guide unit, skew can be reduced.

[0012] A medium transport device according to a second aspect of the present invention comprises a feeding unit having a feeding port at an upper part of a housing for feeding a medium into the housing, a transport unit that transports the medium fed from the feeding unit in a transport direction along a transport path, and a discharge unit having a discharge port for discharging the medium transported by the transport unit outside the housing, wherein the feeding unit includes a support unit that extends upward from the feeding port and has a support surface that supports the medium fed to the feeding port, and the transport path includes a straight path extending from the feeding port from the upper part to the lower part of the housing, and a downstream end of the straight path extending upward in the transport direction. and a U-turn path that extends toward the discharge outlet, the discharge outlet being located lower than the feed port of the housing, the discharge section being the outer surface of the housing, extending from the discharge outlet side toward the feed port, and having a loading surface on which the medium discharged from the discharge outlet is placed, and a media holding section that is provided at the discharge outlet and regulates the posture of the medium that is transported along the U-turn path and discharged from the discharge outlet, the media holding section comprising a base section located on the discharge outlet side, and a posture regulating section that extends from the base section along the support surface to above the feed port.

[0013] In a configuration in which the transport path has a U-turn path, for example, when a relatively long medium is discharged from the discharge port, there is a risk that the medium will bend or buckle and fall forward, or be pulled back into the feed port. According to this aspect, a medium pressing unit that regulates the attitude of the medium transported along the U-turn path and discharged from the discharge port is provided at the discharge port. The medium pressing unit includes a base portion located on the discharge port side, and an attitude regulating unit that extends from the base portion along the support surface to above the feed port. As a result, the orientation of the medium discharged from the discharge port is regulated to be in line with the support surface, so the orientation of the medium is stabilized without buckling, etc. Overall, the stackability of the medium is improved.

[0014] A medium transport device according to a third aspect of the present invention includes a feeding unit having a first feeding opening at an upper part of a housing for feeding a first medium into the housing, a transport unit that transports the first medium fed from the feeding unit in a transport direction along a transport path, and a discharge unit having a discharge opening that discharges the first medium transported in the transport direction outside the housing, wherein the feeding unit includes a support unit that extends above the first feeding opening and has a support surface that supports the first medium fed to the first feeding opening, and the transport path includes a straight path that extends from the first feeding opening to a lower part of the housing, and a U-turn path that exists from a downstream end of the straight path in the transport direction toward the discharge opening located above, and the discharge opening is located below the first feeding opening of the housing. The discharge section is an outer surface of the housing, extends from the discharge outlet side toward the first feed outlet, has a loading surface on which the first medium discharged from the discharge outlet is placed, and is provided with a narrow media feeding section for feeding a second medium having a width dimension smaller than that of the first medium, the narrow media feeding section is arranged at the first feed outlet, and is provided with a second feed outlet for feeding the second medium into the housing and a guide section for guiding the widthwise end of the second medium, and is provided with a media holding section provided at the discharge outlet and regulating the posture of the second medium transported along the U-turn path and discharged from the discharge outlet, and the media holding section is characterized by having a base section located on the discharge outlet side, and a posture regulating section extending from the base section along the support surface to above the first feed outlet.

[0015] (1) According to this aspect, the feeding unit includes a support portion extending above the first feeding opening and having a support surface that supports the medium to be fed to the first feeding opening. The feeding unit further includes a narrow-width medium feeding portion for feeding a second medium having a width dimension smaller than that of the first medium. The narrow-width medium feeding portion is disposed at the first feeding opening and includes a second feeding opening for feeding the second medium into the housing, and a guide portion for guiding a widthwise end of the second medium. This allows the second medium, even if it is narrow and relatively long, such as a receipt, to be set by passing the leading edge of the second medium through the second feed port of the small-width medium feeder, with a portion of the second medium supported on the support surface of the support unit. This stabilizes the position of the second medium when it is set, improving ease of setting. Furthermore, because the second medium is fed to the transport path following the guide unit, skew can be reduced. (2) In a configuration in which the transport path has the U-turn path, for example, when a relatively long second medium is discharged from the discharge port, there is a risk that the second medium may bend or buckle and fall forward, or may be drawn back into the first feed port. According to this aspect, a medium pressing unit that regulates the posture of the second medium transported along the U-turn path and discharged from the discharge port is provided at the discharge port. The medium pressing unit includes a base portion located on the discharge port side and a posture regulating unit that extends from the base portion along the support surface to above the first feed port. This regulates the posture of the second medium discharged from the discharge port so that it is aligned with the support surface, stabilizing the posture of the second medium without buckling or the like. Overall, this improves the stackability of the second medium. (3) Furthermore, according to this aspect, when the second medium set in the small-width medium feed section is discharged from the discharge port, the position of the second medium is further restricted by the medium pressing section. This stabilizes the position of the second medium without buckling, etc. Overall, the ease of setting and stacking the second medium is improved.

[0016] A medium conveying device according to a fourth aspect of the present invention is an aspect dependent on the first or third aspect, and is characterized in that the narrow medium feeding unit has a third feeding port for feeding a third medium narrower than the width dimension of the second medium in the conveying direction into the housing, and a guide unit for guiding the widthwise end of the third medium.

[0017] According to this aspect, the small-width medium feeding unit further includes a third feeding port for feeding a third medium having a width dimension in the transport direction smaller than that of the second medium, and includes a guide unit for guiding a widthwise end of the third medium, thereby improving ease of loading and stacking media of different widths.

[0018] A media conveying device according to a fifth aspect of the present invention is an aspect dependent on the first or third aspect, and is characterized in that the narrow media feeding section is equipped with a curl correction section that corrects curls in the second media being fed. This aspect can also be subordinate to the fourth aspect. Here, "correcting the curl of the second medium" in "equipped with a curl correction unit that corrects the curl of the second medium being fed" means that when the second medium is set in the second feed port of the narrow width medium feed unit in a curled state rather than flat, the curl correction unit functions to change the curl state in a direction closer to a flat state.

[0019] According to this aspect, the small-width medium feed unit includes a curl correction unit that corrects curls in the second medium being fed. When the second medium is set in the second feed port of the small-width medium feed unit in a curled state, the curl is corrected by the curl correction unit. This allows smooth transport of the second medium to the transport unit and prevents transport failures.

[0020] A media conveying device according to a sixth aspect of the present invention is an aspect dependent on the fifth aspect, and is characterized in that the small-width media feeding section is located adjacent to the upstream side of the feed roller pair in the conveying direction, the curl correction section has a protrusion section that contacts the center in the width direction of the first surface of the second medium, the small-width media feeding section has a base surface located on the second surface side opposite the first surface of the second medium, and the base surface has two extension sections that extend in the conveying direction from both ends in the width direction of the second medium, the two extension sections are located outside the axial direction of the feed roller pair, and the tips of each of the two extension sections partially overlap the feed roller pair in the conveying direction, guiding the tip of the second medium toward the nip position of the feed roller pair.

[0021] According to this aspect, the curl correction unit has a protrusion that contacts the center of the first surface of the second medium in the width direction. The small-width medium feeding unit has a base surface located on the second surface side of the second medium. The base surface has two extension portions that extend in the transport direction from both ends of the second medium in the width direction. The two extension portions are located outside the pair of feed rollers in the axial direction. The tips of the two extension portions partially overlap the pair of feed rollers in the transport direction and guide the tip of the second medium toward the nip position of the pair of feed rollers. As a result, even if the second medium is curled, by setting it in the second feeding port of the narrow width medium feeding section, the first surface is pressed toward the base surface by the protrusion, so the curl can be easily corrected. Furthermore, with the curl of the second medium corrected, the leading edge of the second medium is guided toward the nip position of the pair of feed rollers, so that the second medium is sent out more smoothly toward the conveying section, and conveying failures can be further suppressed.

[0022] A media transport device according to a seventh aspect of the present invention is an aspect dependent on the third aspect, characterized in that the narrow media feeding unit has a first mounting portion that is detachable from the housing, the first mounting portion has a plate-shaped clip portion that clamps the upper end of the first feeding port and the loading surface, and the portion of the clip portion that contacts the loading surface extends from the upper end to the lower end of the loading surface. This aspect can also be subordinate to any one of the fourth to sixth aspects.

[0023] According to this aspect, the narrow medium feeding unit has a first mounting portion that is detachable from the housing, and therefore can be easily attached to and detached from the housing. That is, the narrow medium feeding unit can be attached when needed and detached when not needed. Furthermore, the first attachment portion has plate-shaped clip portions that clamp the upper end of the first supply port from the placement surface side and the rear side of the placement surface, so that it can be securely attached to the housing. Furthermore, the portion of the clip portion that contacts the placement surface extends from the upper end to the lower end of the placement surface, thereby reducing the risk of the second medium discharged from the discharge outlet getting caught on the clip portion.

[0024] The media transport device according to the eighth aspect of the present invention is an aspect dependent on the seventh aspect, and is characterized in that the narrow media feeding section is positioned and attached to the housing by a first positioning mechanism.

[0025] According to this aspect, the small-width medium feeding unit is positioned and attached to the housing by the first positioning mechanism, thereby preventing variation in the attachment position of the small-width medium feeding unit.

[0026] The media conveying device according to the ninth aspect of the present invention is an aspect dependent on the second or third aspect, and is characterized in that a first angle formed between the surface on which the media pressing portion extends and a horizontal plane is smaller than a second angle formed between the support surface and the horizontal plane.

[0027] According to this aspect, the first angle formed by the surface on which the medium pressing unit extends and the horizontal plane is smaller than the second angle formed by the support surface and the horizontal plane. That is, the distance between the medium pressing unit and the support surface of the support unit gradually narrows upward. This ensures that the second medium being fed and the second medium being discharged from the discharge port are reliably supported, and prevents the second medium from being pulled into the first feed port, buckling, or the like.

[0028] The media transport device according to the tenth aspect of the present invention is an aspect dependent on the second or third aspect, and is characterized in that the surface of the media pressing portion facing the support surface has a rib protruding toward the support surface. This aspect can also be subordinate to the ninth aspect.

[0029] According to this aspect, the surface of the medium pressing portion facing the support surface has a rib protruding toward the support surface, which restricts the second medium being fed and the second medium being discharged toward the support surface, thereby further preventing the second medium from being drawn into the first feed port or buckling.

[0030] The media conveying device according to the 11th aspect of the present invention is an aspect dependent on the second or third aspect, and is characterized in that the media holding portion is retractable in a direction away from the first feed port. This aspect can also be subordinate to the ninth or tenth aspect.

[0031] According to this aspect, the medium pressing unit can be retracted in a direction away from the first feed opening. This makes it easy to set the first medium in the first feed opening and the second medium in the narrow medium feed unit by retracting the medium pressing unit from the first feed opening.

[0032] A media transport device according to the 12th aspect of the present invention is an aspect dependent on the second or third aspect, characterized in that the media holding unit has a second mounting unit that is detachable from the housing, and the second mounting unit has a locking unit that locks onto a locking unit provided in the discharge outlet portion of the housing. This aspect can be subordinate to any one of the ninth to eleventh aspects.

[0033] According to this aspect, the medium pressing unit has a second mounting portion that is detachable from the housing, and can be easily attached to and detached from the housing. In other words, the medium pressing unit can be attached when needed and detached when not needed. Furthermore, since the second attachment portion has a locking portion that locks onto a locked portion provided in the outlet portion of the housing, the attachment and detachment can be achieved with a simple structure.

[0034] A medium transport device according to a thirteenth aspect of the present invention is an aspect dependent on the twelfth aspect, and is characterized in that the medium pressing unit is attached to the housing by a second positioning mechanism.

[0035] According to this aspect, the medium pressing unit is attached to the housing by the second positioning mechanism, which makes it possible to prevent the medium pressing unit from being attached to a position that is different from the other units.

[0036] An image reading device according to a 14th aspect of the present invention is characterized in that it comprises a medium conveying device according to any one of the first to third aspects, and a reading unit that reads an image on the first medium or the second medium.

[0037] According to this aspect, as an image reading device such as a scanner, it is possible to obtain the effects obtained in the medium conveying device of any one of the first to third aspects.

[0038] [Embodiment] Hereinafter, a medium conveying device according to an embodiment of the present invention and an image reading device including this medium conveying device will be specifically described with reference to FIGS. In the following explanation, the three mutually orthogonal axes are referred to as the X-axis, Y-axis, and Z-axis, as shown in each figure. The directions indicated by the arrows on the three axes (X, Y, Z) are the + directions of each axis, and the opposite directions are the - directions. The Z-axis direction corresponds to the vertical direction, i.e., the direction in which gravity acts, the +Z direction indicates a vertically upward direction, and the -Z direction indicates a vertically downward direction. The X-axis and Y-axis directions correspond to horizontal directions. The +Y direction indicates the front direction of the device, and the -Y direction indicates the rear direction of the device. The +X direction indicates the right direction of the device, and the -X direction indicates the left direction of the device.

[0039] [Overall overview of the image reading device and the media transport device] The image reading device of this embodiment is a scanner capable of reading images on a medium. Here, the image refers to something visually recorded on the medium, such as text, figures, tables, pictures, photographs, etc. The medium is not limited to sheets, but also includes cards, booklets, etc. As shown in FIGS. 1 and 2, the image reading device 1 includes a reading unit 3 (for example, a contact image sensor module (CISM), FIG. 2) capable of reading an image on a medium 2, and a medium conveying device 4. The medium conveying device 4 includes a feeding section 7 having a first feeding opening 61, which is a feeding port 6 for feeding a first medium 21 (dotted line), which is a medium 2, into a housing 5 that forms the exterior of the image reading device 1, at the top of the housing 5. Furthermore, as shown by the dashed line in Figure 2, the medium conveying device 4 includes a conveying section 9 that conveys the medium 2 fed from the feeding section 7 in a conveying direction F along a conveying path 8, and a discharge section 11 that has a discharge opening 10 that discharges the medium 2 conveyed by the conveying section 9 out of the housing 5.

[0040] The feeding unit 7 extends upward from the feeding opening 6 and includes a support portion 13 having a support surface 12 that supports the medium 2 to be fed to the feeding opening 6. The transport path 8 includes a straight path 14 that extends straight from the feeding opening 6 toward the lower portion (-Z) of the housing 5, and a U-turn path 15 that is a reversing path that exists from the downstream end of the straight path 14 in the transport direction F toward the discharge opening 10 located above. The discharge opening 10 is located below the feeding opening 6 of the housing 5. The discharge portion 11 is an outer surface of the housing 5, extends from the discharge opening 10 side toward the feeding opening 6, and includes a placement surface 16 on which the medium 2 discharged from the discharge opening 10 is placed.

[0041] As shown in Figure 2, the feeding unit 7 has a pair of feeding rollers 17 inside the housing 5. The pair of feeding rollers 17 is composed of a pair of feeding roller 18 and separation roller 19, to which power is transmitted from a drive source (not shown). The media 2 set in the feeding unit 7 and supported by the support unit 13 are sent out one sheet at a time to the transport path 8 by the pair of feeding rollers 17. The medium 2 sent to the transport path 8 is transported in the transport direction F along the transport path 8 by receiving a transport force from a first transport roller pair 23 that constitutes the transport unit 9 arranged along the straight path 14, passes through the reading area of ​​the reading unit 3, and is further transported by receiving a transport force from a second transport roller pair 24. The transport direction F is then reversed along a U-turn path 15. The medium 2 then leaves the transport path 8 and is discharged from the discharge port 10 to a discharge receiver 26 by two discharge roller pairs 25 that constitute the transport unit 9 located at the end point of the transport path 8, and is placed on the placement surface 16. Power is transmitted from a drive source (not shown) to the first transport roller pair 23, the second transport roller pair 24, and the discharge roller pair 25. The operations of the feed roller pair 17, the first transport roller pair 23, the reading unit 3, the second transport roller pair 24, and the discharge roller pair 25 are controlled by control signals from a control unit (not shown).

[0042] [Embodiment 1] <Small media feeding section> The medium conveying device 4 of the first embodiment will be described below with reference to FIGS. As shown in Figures 1 to 3, the medium conveying device 4 of this embodiment 1 includes a feeding section 7 having the above-mentioned first feeding opening 61, a conveying section 9 that conveys the first medium 21 in the conveying direction F along the conveying path 8, and a support section 13 having a support surface 12 that supports the first medium 21 to be fed to the first feeding opening 61. In the first embodiment, the medium transport device 4 further includes a small-width medium feeding section 27 for feeding a second medium 22 (broken line) that is narrower in width than the first medium 21. The small-width medium feeding section 27 is disposed in the first feeding opening 61. The small-width medium feeding section 27 includes a second feeding opening 28 for feeding the second medium 22 into the housing 5, and guide sections 31 and 32 for guiding widthwise ends 29 and 30 of the second medium 22. An example of a second medium 22 having a small width is a receipt having a width of 60 mm or 80 mm. Many of these receipts are long, and the problems of the present invention are likely to occur with this type of medium.

[0043] <Curl correction section> As shown in FIGS. 4 to 6, in this embodiment, the small width medium feeding section 27 includes a curl straightening section 33 that straightens curls in the second medium 22 being fed. Here, "correcting the curl of the second medium 22" in "equipped with a curl correction unit 33 that corrects the curl of the second medium 22 being fed" means that when the second medium 22 is set in the second feed opening 28 of the narrow width medium feed unit 27 in a curled state rather than flat, the curl correction unit 33 functions to change the curl state of the second medium in a direction closer to a flat state.

[0044] <3-point curl correction> The small width medium feeding section 27 is located adjacent to and upstream of the feeding roller pair 17 in the transport direction F. The curl correction unit 33 has a protrusion 35 that contacts the center in the width direction (X-axis direction) of the first surface 34 of the second medium 22. The narrow medium feeding unit 27 has a base surface 37 located on the second surface 36 side, which is opposite the first surface 34 of the second medium 22. 5, the base surface 37 has two extensions 38, 38 extending in the transport direction F at both ends in the width direction (X-axis direction) of the second medium 22. The two extensions 38, 38 are located outside the pair of feed rollers 17 in the axial direction (X-axis direction). Note that FIG. 5 is partially omitted so that the protrusion 35 inside the small-width medium feed unit 27 can be seen. 6, furthermore, the leading ends 39, 39 of the two extension portions 38, 38 partially overlap with the feed roller pair 17 in the conveying direction F. This overlap is configured to guide the leading end 40 of the second medium 22 toward the nip position 41 of the feed roller pair 17.

[0045] As shown in FIGS. 5 and 6, when the leading edge 40 of the second medium 22 is passed through the second feeding opening 28 of the narrow medium feeding section 27 and set, the following state occurs. The leading end 40 of the second medium 22 is in a state where the second surfaces 36 at both ends in the width direction (X-axis direction) are supported by the two extension portions 38, 38 near the nip position 41 of the feed roller pair 17. Furthermore, the first surface of the second medium 22 is pressed toward the base surface 37 by the protrusions 35 at a position upstream of the two extension portions 38, 38. That is, the second medium 22 is pressed from both the first surface 34 and the second surface 36 at three points, namely, the protrusion 35 and the two extensions 38, 38, and the curl is corrected. At the same time, the leading edge 40 of the second medium 22 is directed toward the nip position 41 of the feed roller pair 17.

[0046] <Narrow media feed unit is detachable, positioning mechanism> 3 and 7 to 9, in this embodiment, the narrow medium feeding unit 27 has a first mounting portion 42 that is detachable from the housing 5. The first mounting portion 42 has a plate-shaped clip portion 44 that clamps the upper end portion 43 (FIG. 4) of the first feeding opening 61 from the placement surface 16 side and the back surface 49 side of the placement surface 16. Of the clip portion 44, a portion 45 that contacts the mounting surface 16 is configured to extend from an upper end 43 to a lower end 46 of the mounting surface 16. As shown in FIG. 3, the extension length of the portion 45 that contacts the mounting surface 16 is formed to reach close to the discharge opening 10 of the discharge portion 11. The small width medium feeding unit 27 may be fixed to the housing 5 instead of being detachable therefrom.

[0047] 9, in this embodiment, the narrow media feed unit 27 is positioned in the housing 5 by a first positioning mechanism 47 and is configured to be mounted in a first mounting position 48. Note that FIG. 9 is partially omitted so that the first positioning mechanism 47 inside the narrow media feed unit 27 can be seen. The first mounting position 48 is the center of the first feeding opening 61 in the width direction (X-axis direction), and is a position corresponding to the position of the feeding roller pair 17. The first positioning mechanism 47 is composed of a convex portion 50 provided on the back surface 49 of the placement surface 16 of the first feeding opening 61 and a concave portion 51 formed in the narrow medium feeding unit 27. The narrow medium feeding unit 27 is positioned by fitting the convex portion 50 into the concave portion 51, and is then attached to the first attachment position 48.

[0048] <Setting the second medium in the narrow width medium feed section> 3, with the small-width medium feed unit 27 attached to the first feed opening 61 of the housing 5, the leading edge 40 of the second medium 22, such as a receipt, is inserted through the second feed opening 28. The trailing edge of the second medium 22 is supported by the support surface 12 of the support unit 13. Next, the pair of feed rollers 17 is driven to send the second medium 22 toward the conveying unit 9. The second medium 22 is conveyed in the conveying direction F by the conveying unit 9, passes through the reading area of ​​the reading unit 3, and is discharged to the outside from the discharge port 10 of the discharge unit 11.

[0049] <Explanation of Effects of First Embodiment> (1) In this embodiment, the feeding unit 7 includes a support portion 13 that extends above the first feeding opening 61 and has a support surface 12 that supports the first medium 21 to be fed to the first feeding opening 61. The feeding unit 7 further includes a narrow medium feeding unit 27 for feeding a second medium 22 that is narrower in width than the first medium 21. The narrow medium feeding unit 27 is disposed at the first feeding opening 61 and includes a second feeding opening 28 for feeding the second medium 22 into the housing 5, and guide portions 31 and 32 that guide widthwise ends 29 and 30 of the second medium 22. As a result, even if the second medium 22 is narrow and relatively long, such as a receipt, it can be set by passing the leading edge 40 of the second medium 22 through the second feed opening 28 of the narrow medium feed unit 27 with a portion of the second medium 22 supported on the support surface 12 of the support unit 13. This stabilizes the posture of the second medium 22 when it is set, improving the ease of setting. Furthermore, because the second medium 22 is fed to the conveyance path 8 following the guide units 31 and 32, skew can be suppressed.

[0050] (2) In this embodiment, the narrow medium feeding unit 27 includes a curl straightening unit 33 that straightens curls in the second medium 22 being fed. As a result, when the second medium 22 is set in a curled state in the second feeding opening 28 of the narrow medium feeding unit 27, the curl is straightened by the curl straightening unit 33. This allows the second medium 22 to be smoothly fed toward the transport unit 9, and prevents transport problems.

[0051] (3) In this embodiment, the curl correction unit 33 includes a protrusion 35 that contacts the center of the first surface 34 of the second medium 22 in the width direction. The small-width medium feeding unit 27 includes a base surface 37 located on the second surface 36 side of the second medium 22. The base surface 37 includes two extensions 38 that extend in the conveying direction F from both ends of the second medium 22 in the width direction (X-axis direction). The two extensions 38 are located outside the pair of feed rollers 17 in the axial direction (X-axis direction). The respective leading ends 39 of the two extensions 38 partially overlap the pair of feed rollers 17 in the conveying direction F, and guide the leading end 40 of the second medium 22 toward the nip position 41 of the pair of feed rollers 17. As a result, even if the second medium 22 is curled, by setting it in the second feeding port 28 of the narrow-width medium feeding section 27, the first surface 34 is pressed toward the base surface 37 by the protrusion 35, so that the curl can be easily corrected. Furthermore, with the curl of the second medium 22 corrected, the leading edge 40 of the second medium 22 is guided toward the nip position 41 of the feed roller pair 17, so that the second medium 22 is sent out more smoothly toward the conveying section 9, and conveying failures can be further suppressed.

[0052] (4) In addition, in this embodiment, the narrow medium feeding unit 27 has the first mounting portion 42 that is detachable from the housing 5, and therefore can be easily attached to and detached from the housing 5. In other words, the narrow medium feeding unit 27 can be attached when needed and detached when not needed. In addition, the first attachment portion 42 has a plate-shaped clip portion 44 that clamps the upper end portion 43 of the first feeding port 61 from the side of the mounting surface 16 and the back surface 49 side of the mounting surface 16, so that it can be securely attached to the housing 5. Furthermore, the portion 45 of the clip portion 44 that contacts the mounting surface 16 extends from the upper end 43 to the lower end 46 of the mounting surface 16, thereby reducing the risk of the second medium 22 discharged from the discharge outlet 10 getting caught on the clip portion 44.

[0053] (5) In this embodiment, the narrow medium feeding unit 27 is positioned and attached to the housing 5 by the first positioning mechanism 47. This prevents the narrow medium feeding unit 27 from being attached to a different position.

[0054] <Modification of the First Embodiment> A modification of the first embodiment will be described with reference to FIG. In this modified example, the small-width medium feed unit 27 includes a third feed opening 53 in addition to the second feed opening 28. The third feed opening 53 is configured to feed a third medium 52 into the housing 5, the third medium 52 having a width dimension smaller than that of the second medium 22 in the transport direction F. The small-width medium feed unit 27 also includes guide portions 56 and 57 that guide widthwise ends 54 and 55 of the third medium 52. The third feed opening 53 has basically the same structure as the second feed opening 28, except that its widthwise dimension is smaller. The third medium 52 that passes through the third feed port 53 is configured to have its curl corrected by the protrusion 35 and the two extensions 38, 38, in the same way as the second medium 22, and to be guided toward the feed roller pair 17.

[0055] In this modification, the small-width medium feeding unit 27 further includes a third feeding opening 53 for feeding a third medium 52 that is smaller in width in the transport direction F than the second medium 22, and includes guide units 56 and 57 that guide widthwise ends 54 and 55 of the third medium 52. This improves the ease of setting and stacking media of different widths.

[0056] [Embodiment 2] Next, a medium conveying device 4 according to a second embodiment and an image reading device 1 including this medium conveying device 4 will be described with reference to Figures 1, 2, 4, and 11 to 13. The same parts as those in the first embodiment are given the same reference numerals, and a description of their configurations and corresponding effects will be omitted. The medium conveying device 4 of the second embodiment includes the following components in addition to the components of the medium conveying device 4 of the first embodiment. The medium conveying device 4 of the second embodiment further includes a medium pressing unit 60. The medium pressing unit 60 is provided at the discharge port 10. The medium pressing unit 60 is configured to regulate the posture of the second medium 22 that is conveyed along the U-turn path 15 and discharged from the discharge port 10. As shown in Figures 1 and 11, the media holding portion 60 includes a base portion 62 located on the discharge port 10 side, and a posture control portion 63 extending from the base portion 62 along the support surface 12 of the support portion 13 to above the first feed port 61.

[0057] Also, as shown in Figure 2, in this embodiment, the first angle θ1 formed between the extending surface 64 of the media pressing portion 60 and the horizontal plane 65 is configured to be smaller than the second angle θ2 formed between the support surface 12 and the horizontal plane 65. Furthermore, as shown in FIGS. 2 and 11, the surface of the medium pressing portion 60 that faces the support surface 12 has a rib 66 that protrudes toward the support surface 12 . In this embodiment, the posture regulating part 63 is configured to be extendable and contractible, and includes a base part 67 and an extension part 68. When in use, the extension part 68 can be pulled out from the base part 67 as needed to increase the overall length. When not in use, the extension part 68 is returned into the base part 67. Note that here, similar to the rib 66, protruding parts 69, 69 are also provided on the extension part 68 side of the base part 67, and are configured to support the function of the rib 66.

[0058] 11 and 12, in this embodiment, the medium pressing unit 60 has a second mounting portion 71 that is detachable from the housing 5. The second mounting portion 71 has a locking portion 73 that locks onto a locked portion 72 provided in the discharge portion 11 of the housing 5. The locking portion 73 has a first locking portion 74 located on the posture restricting portion 63 side of the base portion 62, and a second locking portion 75 located on the opposite side of the base portion 62 from the posture restricting portion 63. The locked portion 72 is provided in the discharge portion 11, and has a first locked portion 76 with which the first locking portion 74 locks, and a second locked portion 77 with which the second locking portion 75 locks. 12 shows a state in which the medium pressing unit 60 is attached to the discharge unit 11 of the housing 5 by the second attachment unit 71. FIG. 11 shows a state in which the medium pressing unit 60 has been removed from the discharge unit 11 of the housing 5.

[0059] As shown in FIG. 11, in this embodiment, the medium pressing unit 60 is configured to be positioned and attached to the housing 5 by a second positioning mechanism 78. The second positioning mechanism 78 has a protrusion 79 provided on the first locking portion 74 of the medium pressing unit 60. The second positioning mechanism 78 is configured so that positioning is performed by fitting this protrusion 79 into a recess (not shown) provided on the discharge unit 11 side. The position at which the medium pressing unit 60 is positioned by the second positioning mechanism 78 is the same as that of the small-width medium feeding unit 27. That is, it is the center of the first feeding opening 61 in the width direction (X-axis direction), and is a position corresponding to the position of the feeding roller pair 17.

[0060] 13, in this embodiment, the medium pressing unit 60 is configured to be retractable in a direction away from the first feeding opening 61. Note that FIG. 13 is illustrated with the narrow medium feeding unit 27 removed. Here, the attitude restriction part 63 is rotatably connected to the base part 62 by a rotation fulcrum 70 (FIG. 11). The attitude restriction part 63 retracts by rotating in the width direction (X-axis direction) along the placement surface 16 of the housing 5. This retraction opens the first feeding opening 61 side to the front, making it easier to access. The structure for retracting the attitude restriction unit 63 is not limited to a specific structure. For example, instead of a structure for rotating the attitude restriction unit 63 in the width direction, the attitude restriction unit 63 may be retracted toward the front side of the housing 5 (in the Y-axis direction).

[0061] <Regulation of the position of the second medium by the medium holder> 2, when the second medium 22 is discharged from the discharge port 10 of the discharge unit 11, the presence of the medium pressing unit 60 forces the second medium 22 to pass through the area between the medium pressing unit 60 and the support surface 12 of the support unit 13. As a result, even if the second medium 22 is curved or deformed due to curling, or has a bent portion, the curved or bent deformation is suppressed, that is, the posture of the second medium 22 is restricted to a substantially flat posture.

[0062] <Explanation of Effects of Embodiment 2> (1) In this embodiment, in addition to the above-described effects due to the presence of the narrow medium feeding unit 27 in the first embodiment, the following effects are obtained. In a configuration in which the conveying path 8 has a U-turn path 15, for example, when a relatively long second medium 22 is discharged from the discharge outlet 10, there is a risk that the second medium 22 will bend or buckle and fall forward, or be pulled into the first feed port 61 again. In this embodiment, a medium pressing unit 60 is provided at the discharge outlet 10 to regulate the posture of the second medium 22 transported along the U-turn path 15 and discharged from the discharge outlet 10. The medium pressing unit 60 includes a base 62 located on the discharge outlet 10 side, and a posture regulation unit 63 extending from the base 62 along the support surface 12 to above the first feed port 61. This regulates the posture of the second medium 22 discharged from the discharge outlet 10 so that it is aligned with the support surface 12, stabilizing the posture of the second medium 22 without buckling or the like. Overall, this improves the stackability of the second medium 22. Furthermore, in this embodiment, when the second medium 22 set in the narrow medium feed unit 27 is discharged from the discharge port 10 of the discharge unit 11, the position of the second medium 22 is further restricted by the medium pressing unit 60. This stabilizes the position of the second medium 22 without buckling or the like. Overall, the ease of setting and stacking the second medium 22 is improved.

[0063] (2) In addition, in this embodiment, the first angle θ1 formed between the extending surface 64 of the medium pressing unit 60 and the horizontal plane 65 is smaller than the second angle θ2 formed between the support surface 12 and the horizontal plane 65. In other words, the distance between the medium pressing unit 60 and the support surface 12 of the support unit 13 gradually narrows upward. This ensures that the second medium 22 being fed and the second medium 22 being discharged from the discharge port 10 can be reliably supported, and prevents the medium from being pulled into the first feed port, etc., or from buckling.

[0064] (3) In addition, in this embodiment, the surface of the medium pressing unit 60 facing the support surface 12 has a rib 66 that protrudes toward the support surface 12. As a result, the second medium 22 being fed and the second medium 22 being discharged are restricted to the support surface 12 side by the rib 66, which further prevents the second medium 22 from being drawn into the first feed opening 61, etc., or from buckling. (4) In addition, in this embodiment, the medium pressing unit 60 can be retracted in a direction away from the first feeding opening 61. As a result, by retracting the medium pressing unit 60 from the first feeding opening 61, it is possible to easily set the first medium 21 in the first feeding opening 61 or the second medium 22 in the narrow medium feeding unit 27.

[0065] (5) In addition, in this embodiment, the medium pressing unit 60 has the second mounting portion 71 that is detachable from the housing 5, and therefore can be easily attached and detached from the housing 5. In other words, the medium pressing unit 60 can be attached when needed and detached when not needed. Furthermore, since the second attachment part 71 has a locking part 73 that locks onto a locked part 72 provided at the outlet 10 of the housing 5, the attachment and detachment can be achieved with a simple structure. (6) In this embodiment, the medium pressing unit 60 is attached to the housing 5 by the second positioning mechanism 78. This prevents the medium pressing unit from being attached to a position that is inconsistent.

[0066] [Embodiment 3] Next, a medium conveying device 4 according to a third embodiment and an image reading device 1 including this medium conveying device 4 will be described with reference to Fig. 14. The same parts as those in the first and second embodiments are given the same reference numerals, and descriptions of their configurations and corresponding effects will be omitted. 14, the medium transport device 4 of the third embodiment corresponds to a structure in which the narrow medium feeding unit 27 is removed from the medium transport device 4 of the second embodiment shown in FIG. 1 and only the medium pressing unit 60 is provided, and other than that, the structure is the same as that of the second embodiment. Therefore, a description of the structure will be omitted. In this embodiment, since the structure does not have a narrow media feeding section 27, the first media 21 is the only media to be transported in the media 2, but the second media 22 may also be fed from the first feeding port 61 without the narrow media feeding section 27. In this embodiment, the provision of the medium pressing unit 60 regulates the orientation of the medium 2 discharged from the discharge port 10 so that it is aligned with the support surface 12. This stabilizes the orientation of the medium 2 without buckling or the like. Overall, this improves the stackability of the medium 2.

[0067] Other Embodiments The media conveying device 4 of the present invention and the image reading device 1 equipped with this media conveying device 4 are based on the configuration of the embodiment described above, but it is of course possible to change or omit partial configurations within the scope that does not deviate from the gist of the present invention. In the above embodiment, the device equipped with the medium conveying device 4 is described as an image reading device 1 such as a scanner, but it is of course not limited to this image reading device and can also be applied to image forming devices such as printers.

[0068] 1...image reading device, 2...medium, 3...reading unit, 4...medium conveying device, 5...casing, 6...feed port, 7...feed section, 8...conveyance path, 9...conveyance section, 10...discharge port, 11...discharge portion, 12...support surface, 13...support portion, 14...straight path, 15...U-turn path, 16...loading surface, 17...feed roller pair, 18...feed roller, 19...Separation roller, 21...First medium, 22...Second medium, 23...the first conveying roller pair, 24...the second conveying roller pair, 25...the discharge roller pair, 26...Discharge receiving part, 27...Small width medium feeding part, 28...Second feeding port, 29...Width direction end part, 30... width direction end portion, 31... guide portion, 32... guide portion, 33... curl correction portion, 34...first surface, 35...projection portion, 36...second surface, 37...base surface, 38...extension portion, 39...tip of extension portion, 40...tip of second medium, 41...nip position, 42...first attachment portion, 43...upper end portion of first supply port, 44...clip portion, 45...portion in contact with the placement surface, 46...lower end of the first supply port, 47...first positioning mechanism, 48...first mounting position, 49...backside of mounting surface, 50...convex portion, 51...concave portion, 52...third medium, 53...third feeding port, 54...widthwise end portion, 55...widthwise end portion, 56... guide portion, 57... guide portion, 60... medium pressing portion, 61... first feeding port, 62...base portion, 63...attitude control portion, 64...surface on which the medium pressing portion extends, 65... horizontal surface, 66... ​​rib, 67... base, 68... extension, 69... protruding portion, 70...Rotation fulcrum, 71...Second attachment part, 72...Locked part, 73...Locking part, 74...first locking part, 75...second locking part, 76...first locked part, 77... second locked portion, 78... second positioning mechanism, 79... protrusion, θ1...First angle, θ2...Second angle, F...Transport direction

Claims

1. a feeding unit having a first feeding port at an upper portion of the housing for feeding a first medium into the housing; a transport unit that transports the first medium fed from the feeding unit along a transport path in a transport direction, the feeding section includes a support section extending above the first feeding opening and having a support surface that supports the first medium to be fed to the first feeding opening; a narrow-width medium feeding unit for feeding a second medium having a width dimension smaller than that of the first medium; The small width medium feeding unit includes: Located at the first feed port, a second feed port for feeding the second medium into the housing; a guide portion that guides an end portion of the second medium in a width direction; A medium transport device comprising:

2. a feeding unit having a feeding port at an upper portion of the housing for feeding a medium into the housing; a conveying unit that conveys the medium fed from the feeding unit along a conveying path in a conveying direction; a discharge unit having a discharge port that discharges the medium transported by the transport unit to the outside of the housing, the feeding unit includes a support portion extending above the feeding opening and having a support surface that supports the medium to be fed to the feeding opening; the conveying path includes a straight path extending from the inlet toward the bottom of the housing, and a U-turn path extending from a downstream end of the straight path in the conveying direction toward the outlet disposed above, the discharge port is disposed below the supply port of the housing, the discharge portion is an outer surface of the housing, extends from the discharge port toward the feed port, and has a placement surface on which the medium discharged from the discharge port is placed; a medium pressing unit provided at the discharge port and configured to regulate the position of the medium being transported along the U-turn path and discharged from the discharge port; The medium pressing unit a base portion located on the outlet side; an attitude regulation portion extending from the base portion along the support surface to above the supply port; A medium transport device comprising:

3. a feeding unit having a first feeding port at an upper portion of the housing for feeding a first medium into the housing; a conveying unit that conveys the first medium fed from the feeding unit along a conveying path in a conveying direction; a discharge unit having a discharge port that discharges the first medium transported in the transport direction to outside the housing, the feeding section includes a support section extending above the first feeding opening and including a support surface that supports the first medium to be fed to the first feeding opening; the conveying path includes a straight path extending from the inlet toward the bottom of the housing, and a U-turn path extending from a downstream end of the straight path in the conveying direction toward the outlet disposed above, the discharge port is disposed below the first supply port of the housing, the discharge portion is an outer surface of the housing, extends from the discharge port toward the first feed port, and has a placement surface on which the first medium discharged from the discharge port is placed; a narrow-width medium feeding unit for feeding a second medium having a width dimension smaller than that of the first medium; The small width medium feeding unit includes: Located at the first feed port, a second feed port for feeding the second medium into the housing; a guide portion that guides an end portion of the second medium in the width direction, a medium pressing unit provided at the discharge port that regulates the attitude of the second medium transported along the U-turn path and discharged from the discharge port; The medium pressing unit a base portion located on the outlet side; a position restricting portion extending from the base portion along the support surface to above the first feeding port; A medium transport device comprising:

4. 4. The medium transport device according to claim 1, The small width medium feeding unit includes: a third feeding port for feeding a third medium into the housing, the third medium having a width smaller than that of the second medium in the transport direction; a guide portion that guides an end portion of the third medium in a width direction; A medium transport device comprising:

5. 4. The medium transport device according to claim 1, The small-width medium feeding unit includes a curl correction unit that corrects curls in the second medium being fed. A medium transport device characterized by:

6. The medium transport device according to claim 5 , the small width medium feeding unit is located adjacent to and upstream of the pair of feeding rollers in the transport direction; the curl correction unit includes a protrusion that contacts a center portion in a width direction of the first surface of the second medium, the narrow-width medium feeding unit includes a base surface located on a second surface side of the second medium that is opposite to the first surface, the base surface includes two extension portions extending in the transport direction at both ends in the width direction of the second medium, the two extension portions are located on outer sides of the pair of feed rollers in the axial direction, each of the two extension portions partially overlaps with the pair of feeding rollers in the transport direction and guides the leading edge of the second medium toward a nip position of the pair of feeding rollers; A medium transport device characterized by:

7. The medium transport device according to claim 3 , the small-width medium feeding unit has a first mounting portion that is detachable from the housing; the first attachment portion has a plate-shaped clip portion that sandwiches an upper end portion of the first supply port and the placement surface, The portion of the clip that contacts the placement surface extends from the upper end to the lower end of the placement surface. A medium transport device characterized by:

8. The medium transport device according to claim 7, The narrow media feeding unit is positioned and attached to the housing by a first positioning mechanism. A medium transport device characterized by:

9. 4. The medium transport device according to claim 2, wherein: A first angle formed by a surface on which the medium pressing portion extends and a horizontal plane is smaller than a second angle formed by the support surface and the horizontal plane. A medium transport device characterized by:

10. 4. The medium transport device according to claim 2, wherein: The surface of the medium pressing portion facing the support surface has a rib that protrudes toward the support surface. A medium transport device characterized by:

11. 4. The medium transport device according to claim 2, wherein: The medium pressing unit is retractable in a direction away from the first feeding opening. A medium transport device characterized by:

12. 4. The medium transport device according to claim 2, wherein: the medium pressing unit has a second mounting portion that is detachable from the housing, The second attachment portion has a locking portion that locks onto a locking portion provided on an edge portion of the outlet of the housing. A medium transport device characterized by:

13. The medium transport device of claim 12, The medium pressing unit is attached to the housing by a second positioning mechanism. A medium transport device characterized by:

14. The medium transport device according to any one of claims 1 to 3; a reading unit that reads an image on the first medium or the second medium; An image reading device comprising:

Images