JP2023126470A - Reading device and copying device - Google Patents

Abstract

To provide a reading device and a copying device, capable of obtaining a high-quality read image of a document in the reading device including a document table and a feeding unit.SOLUTION: The reading device includes: a housing having a document table on which a document is placed; a cover for rotating via a hinge 30 at a top of the housing; an automatic document feeder (ADF) as an example of a feeding unit mounted on the cover; and a reading unit for reading a document placed on the document table and a document fed by the ADF. The reading device also has a first frame 71, forming the housing, for supporting the document table and a second frame 72, forming the housing, to which the hinge 30 is fixed.SELECTED DRAWING: Figure 8

Description

The present invention relates to a reading device that reads a document, and a copying device equipped with the reading device.

Patent Document 1 discloses a copying machine equipped with an image reading unit as an example of a reading device. The image reading unit includes a scanner fixed above the image forming section and an automatic document feeder (ADF) as a sheet separation and conveyance device supported by the scanner. An image reading unit having a scanner and an ADF fixed above the image forming section has a fixed reading section and a movable reading section.

The ADF has a main body cover that includes a document placing table for placing a document before being read, a document conveyance section for conveying the document, a document stacking table for stacking the document after being read, and the like. The ADF is rotatably supported by a hinge mechanism fixed to the scanner, which is a pedestal. A document platen glass is held on the top surface of the scanner.

Japanese Patent Application Publication No. 2013-127524

However, in the image reading unit described in Patent Document 1, when the cover on which the ADF is mounted is opened, the weight of the ADF may deform the pedestal of the scanner or deform the ADF. For this reason, as the ADF is repeatedly opened and closed with respect to the scanner, the position of the glass frame held on the pedestal section shifts, and the position of the document set aligned with the glass frame shifts. Further, as the ADF is repeatedly opened and closed relative to the scanner, the ADF deforms and the position of the document conveyed by the ADF shifts. In a reading device including a document table and a feeding section as described above, there is a problem that a good read image of the document cannot be obtained.

A reading device that solves the above problems includes a housing having a document table on which a document is placed, a cover that rotates via a hinge at an upper part of the housing, a feeding unit mounted on the cover, and a a reading unit that reads the original placed on the original platen and the original fed by the feeding unit; a first frame that forms the housing and supports the original plate; and a first frame that forms the housing and the hinge and a fixed second frame.

A reading device that solves the above problems includes a housing having a document table on which a document is placed, a cover that rotates via a hinge at an upper part of the housing, a feeding unit mounted on the cover, and a a reading unit that reads the original placed on a document table and the original fed by the feeding unit, the hinge has a first member and a second member that are relatively rotatable; one member is fixed to a frame constituting the casing, and the second member supports the feeding section and the cover, and extends in the rotation radial direction of the cover while being fixed to the second member. A reinforcing frame is provided, and the frame of the feeding section is fixed to the reinforcing frame.

A copying apparatus that solves the above problems includes the above-mentioned reading device and a recording device having a recording section in the housing for recording an image of a document read by the reading section of the reading device on a medium, and The recording device is arranged below the device.

FIG. 1 is a perspective view of a multifunction device in one embodiment. FIG. 2 is a perspective view showing a reading device. FIG. 3 is a perspective view showing the reading device with the cover in an open state. FIG. 3 is a partially cutaway front view of the reading device. FIG. 3 is a perspective view showing the document table with the glass removed. FIG. 3 is a perspective view showing the frame structure of the document table. FIG. 3 is a side view showing the frame structure of the document table. FIG. 3 is a side sectional view showing the rear part of the document table. A front sectional view showing the left rear part of the document table. A front sectional view showing the right rear part of the document table. FIG. 3 is a perspective view showing the ADF with the exterior cover removed. FIG. 3 is a side sectional view showing the ADF mounted on the cover. FIG. 3 is a perspective view showing the frame of the ADF. FIG. 7 is a perspective view showing a scanner device in a modified example. FIG. 3 is a perspective view showing the scanner device in which a cover mounting an ADF is in an open state.

An embodiment of a recording device will be described below with reference to the drawings.
As shown in FIG. 1, a multifunction device 11, which is an example of a copying device, is installed in a horizontal use place and has a casing 12 having a predetermined height, depth, and width. A reading device 13 is provided on the body 12. The reading device 13 includes a document reading device 14 having a document table 31 disposed on a housing 12, a cover 15 provided to be openable and closable with respect to the document table 31, and a feeding section mounted on the cover 15. An automatic document feeder 16 (ADF (Auto Document Feeder)) is provided as an example.

The housing 12 has a document table 31 at the top on which a document D is placed when the cover 15 is opened. The cover 15 is rotatably provided at the top of the housing 12 via a pair of hinges 30 (see FIG. 3). The cover 15 also serves as a document table cover that can be opened and closed between an open position exposing the placement surface of the document table 31 and a closed position shown in FIG. The document D set on the document table 31 is read by a first reading section 41 (see FIG. 4), which is an example of a reading section disposed within the document reading device 14.

The automatic document feeder 16 includes a document tray 17 on which a plurality of documents D can be placed in a stacked state, and a discharge section 18 disposed below the document tray 17. The plurality of originals D set in a stacked state on the original tray 17 are read by a first reading unit 41 (see FIG. 4) disposed in the original reading device 14 while being sequentially sent to the ejection unit 18. It will be done.

In the multifunction device 11, a portion below the reading device 13 is a recording device 29 that records on paper P, which is an example of a medium. The multifunction device 11 includes a reading device 13 and a recording device 29 that has a recording section 26 in the housing 12 that records the image of the document D read by the first reading section 41 of the reading device 13 on the paper P. There is. In the multifunction device 11, a recording device 29 is arranged below the reading device 13.

A paper cassette 19 that is removably attached to the attachment port 12A and an ejection port 20 from which the recorded paper P is ejected are provided in the front part of the housing 12 in order from the bottom side upward. There is. An ejection tray 21 that supports the recorded paper P ejected from the ejection port 20 is attached to the ejection port 20 in a freely expandable and retractable manner. An operation panel 22 for performing various operations is provided on the front side of the document reading device 14. Note that the front surface of the casing 12 and the front surface of the multifunction device 11 refer to the side surface that has a height and width and is where the user mainly operates the multifunction device 11. That is, in the multifunction device 11, the surface on which the operation panel 22 is arranged is the front surface, and the surface on the opposite side thereof is the back surface (rear surface).

The operation panel 22 includes an operation section 23 that includes a plurality of buttons that are operated by the user when giving instructions to the multifunction peripheral 11, and a display section 24. The operation unit 23 includes, for example, a power button for switching the power of the multifunction device 11 between on and off. The display unit 24 is capable of displaying various information such as menus and messages of the multifunction device 11. Note that the display section 24 may be configured as a touch panel, which also serves as a part of the operation section 23.

As shown in FIG. 1, a paper feeding mechanism 25 that supports and feeds paper P for so-called manual printing is provided at the rear upper part of the housing 12. The paper feeding mechanism 25 is configured to be able to feed a plurality of sheets P set on a paper feeding tray (not shown) that is slid and extended by the user into the housing 12 one by one. In this embodiment, a direction parallel to the direction from the front surface to the rear surface of the housing 12 is defined as the depth direction X, and a direction orthogonal to both the depth direction X and the vertical direction Z is defined as the width direction Y. The width direction Y and the depth direction X substantially follow a horizontal plane.

As shown in FIG. 1, inside the housing 12, there is an ink supply source (not shown) consisting of a tank or an ink cartridge containing ink, and the ink supplied from the ink supply source is supplied from a paper cassette 19. A recording section 26 is arranged to record on the paper P that has been printed. The recording unit 26 includes a recording head 27 that discharges ink supplied from an ink supply source through a tube (not shown), and a carriage 28 that supports the recording head 27. Additionally, inside the housing 12, there is a transport unit that transports the paper P from the paper cassette 19 or the paper feeding mechanism 25, and a support stand that supports the transported paper P at a position facing the recording unit 26 (both are not shown). ) are arranged. A recording operation is performed in which the recording head 27 performs one operation's worth of recording on the paper P by ejecting ink while the carriage 28 moves in the width direction of the paper P, and the transport unit transports the paper P to the next recording position. Recording is performed on the paper P by performing the conveyance operation alternately. The recorded paper P is discharged from the discharge port 20 onto the discharge tray 21 . The portion of the housing 12 that accommodates the recording unit 26 thus serves as a recording device 29 that performs recording including copying of the image of the document D read by the reading device 13 onto the paper P. Note that the recording unit 26 is not limited to the serial recording method, but may be a line recording method. In the case of the line recording method, the recording head 27 is a long line head that can record at once an area spanning the width of paper P, which is the assumed maximum width, or a plurality of unit heads that can record in a range spanning the width of paper P. Consists of an array of multi-heads.

Next, the detailed configuration of the reading device 13 will be explained with reference to FIGS. 2 and 3.
As shown in FIG. 2, the reading device 13 includes a document reading device 14 assembled on the top of the housing 12, a cover 15 that functions as a lid for the document reading device 14, and a cover 15 mounted on the top of the cover 15. It has an automatic document feeder 16 (hereinafter also referred to as "ADF 16"). The reading device 13 is configured such that a document reading device 14 and an ADF 16 are stacked vertically. The document tray 17 includes a placement surface 17A on which the document D is set, and a pair of edge guides 17B that positions the document D set on the placement surface 17A in the depth direction X. Further, the ADF 16 has an opening/closing cover 16A on its upper surface. The opening/closing cover 16A is configured to be openable and closable between an open position in which the transport mechanism inside the ADF 16 is exposed and a closed position shown in FIG.

FIG. 3 shows a state in which the cover 15 on which the ADF 16 is mounted is opened with respect to the document reading device 14. As shown in FIG. The cover 15 on which the ADF 16 is mounted is configured to be openable and closable with respect to the document reading device 14 using the end on the back side of the reading device 13 as a fulcrum. As shown in FIG. 3, the document reading device 14 and the cover 15 on which the ADF 16 is mounted are rotatably connected via a hinge 30. As shown in FIG.

The document table 31 includes a rectangular frame-shaped main body housing 32 having an upper opening, a rectangular frame-shaped frame 33 provided on the upper surface of the main body housing, and a space between the opening of the main body housing 32 and the frame 33. A rectangular original table glass 34 (hereinafter also simply referred to as "glass 34") is provided. At a position next to the glass 34 on the document table 31 on one side in the width direction Y, which is the scanning direction of the first reading section 41 (see FIGS. 4 and 5), there is a plate in the depth direction X intersecting the width direction Y. A transparent plate 35 made of glass is attached to a long window extending along the window.

The surface (back surface) of the cover 15 facing the document table 31 serves as a document pressing surface 36 that presses down the document D on the document table 31 from above. An opening 37 is provided on the back surface of the cover 15 at an end position on the left side of the document holding surface 36 in FIG. 3, through which a portion of the document D conveyed by the ADF 16 is exposed. The document D set on the glass 34 is positioned by aligning its sides with the inner end surface of the frame 33. The document reading device 14 reads images such as characters and photographs recorded on the document D set on the glass 34 of the document table 31 or the document D fed from the document tray 17.

Next, the detailed configuration of the reading device 13 will be described with reference to FIG. 4. As shown in FIG. 4, the cover 15 also serves as a document table cover that can be opened and closed with respect to the document table 31. As shown in FIG. The reading device 13 has a flatbed scanner function that reads the original D placed on the glass 34 of the original table 31 that is exposed when the cover 15 is opened, and an ADF 16 that reads the original D placed on the original tray 17. It has a sheet feeder type scanner function that automatically feeds and reads sheets one by one.

The document table 31 includes a housing 38 that movably accommodates the first reading section 41. In the flatbed scanner function, the first reading section 41 scans in the width direction Y to read the document D placed on the glass 34 of the document table 31. The first reading section 41 includes a first sensor 44 that reads an image of the document D on the glass 34, and a carriage 45 on which the first sensor 44 is mounted. The carriage 45 is provided so as to be movable in the width direction Y in an area directly under the glass 34 and the transparent plate 35. When waiting to receive a reading instruction from a user, the carriage 45 waits at a standby position that is one end position in the width direction Y. The standby position is the home position of the first reading section 41. The first reading unit 41 reads the image of the document D set on the glass 34 by scanning in the width direction Y from a standby position at a predetermined speed.

In the sheet feeder type scanner function, the ADF 16 sequentially supplies the originals D stacked on the original tray 17, and causes the reading units 41 and 42 to read the images of the originals D during the transport path T. When reading the document D fed by the ADF 16, the first reading section 41 is arranged at a reading position SP near one end of the movement path in the width direction Y. That is, the first reading section 41 is arranged at the reading position SP shown in FIG. 4, which is a position directly below the transparent plate 35.

As shown in FIG. 4, the ADF 16 includes a transport section 46 that transports the original D set on the original tray 17 along the transport path T. The conveyance path T extends from the document tray 17 toward the discharge section 18 so as to curve in a U-shape. The conveyance section 46 conveys the document D fed from the document tray 17 to the discharge section 18 along a conveyance path T that includes a reversal through a reading position on the way.

The conveyance section 46 is composed of a plurality of rollers. The rollers constituting the transport section 46 transport the document D by rotating. These rollers are arranged along the transport path T. On the conveyance path T of the conveyance section 46, in order from the document tray 17 side to the discharge section 18 side, there are a feed roller 50, a separate roller 51, a first guide roller 52, a second guide roller 53, and a third guide roller 54. , a feed roller 55, and a discharge roller 56 are arranged.

The feeding roller 50 is arranged at a position where it can contact the originals D loaded on the original tray 17 from above. The feeding roller 50 feeds the original D from the original tray 17 to the transport path T by rotating while in contact with the original D. When a plurality of documents D are stacked on the document tray 17, the feeding roller 50 sequentially feeds the document D starting from the highest document D.

When a plurality of documents D fed from the feed roller 50 overlap, the separation roller 51 separates the plurality of documents D one by one and conveys them. Therefore, a separation roller 51A for separating the document D is arranged at a position facing the separation roller 51. The separate roller 51 and the separation roller 51A are arranged so as to sandwich the conveyance path T therebetween. The separation roller 51A applies frictional force to separate the originals D one by one when the separation roller 51 transports the originals D.

The first guide roller 52 includes a first drive roller 52A and a first driven roller 52B, and rotates while holding the document D separated by the separation roller 51 and separation roller 51A. The first guide roller 52 conveys the document D toward the second guide roller 53 by applying a driving force to the document D being conveyed.

The second guide roller 53 includes a second drive roller 53A and a second driven roller 53B, and rotates while sandwiching the document D conveyed by the first guide roller 52. The second guide roller 53 conveys the document D toward the third guide roller 54 by applying a driving force to the document D being conveyed.

The third guide roller 54 includes a third drive roller 54A and a third driven roller 54B, and rotates while sandwiching the document D conveyed by the second guide roller 53. The third guide roller 54 conveys the document D toward the feed roller 55 by applying a driving force to the document D being conveyed.

The feed roller 55 includes a feed drive roller 55A and a feed driven roller 55B, and rotates while holding the document D conveyed by the third guide roller 54. The feed roller 55 conveys the document D conveyed from the third guide roller 54 toward the discharge roller 56 by applying a driving force to the document D being conveyed.

The ejection roller 56 includes an ejection drive roller 56A and an ejection driven roller 56B, and rotates while sandwiching the document D conveyed by the feed roller 55. The discharge roller 56 discharges the document D toward the discharge section 18 by applying a driving force to the document D being conveyed.

As shown in FIG. 4, the ADF 16 includes a second reading section 42 that reads the document D midway along the transport path T. The second reading unit 42 is disposed at a position between the feed roller 55 and the discharge roller 56 on the transport path T, and reads an image on the second side of the document D that is transported along the transport path T. The second surface of the document D is the surface opposite to the first surface of the document D that the first reading section 41 reads at the reading position SP. The second reading section 42 has a second sensor 57 that reads an image on the second side of the document D. When the multifunction device 11 receives the double-sided reading command, it reads both the first and second sides of the document D fed from the document tray 17 .

FIG. 5 shows the document reading device 14 with the glass 34, transparent plate 35, and frame 33 removed.
As shown in FIG. 5, the document table 31 constituting the document reading device 14 has a square frame 60, and the side thereof is a square frame-shaped synthetic resin exterior cover 12B surrounding the entire circumference. covered. A bottom portion 61 of a housing 38 made of synthetic resin is disposed below the frame frame 60, and a storage chamber 62 that opens upward is formed within the housing 38 by the frame frame 60 and the bottom portion 61. Inside the accommodation chamber 62, the first reading section 41 is provided so as to be movable back and forth in the width direction Y. The first reading unit 41 includes a carriage 45 that is movably provided along a rail 63 that extends in the width direction Y within the storage chamber 62, and a linear first sensor 44 that is mounted on the carriage 45. and a line-shaped light source 47 mounted on a carriage 45. The light source 47 irradiates a reading area of the document D set on the glass 34 of the document table 31 with light. The carriage 45 is fixed to a part of an endless conveyor belt 64 stretched along a rail 63 in the storage chamber 62, and the conveyor belt 64 is driven by an electric motor (not shown) that is a power source of the carriage 45. By rotating forward and backward, the carriage 45 reciprocates in the width direction Y.

By the way, when the reading device 13 is used for business purposes, high-speed scanning is required. When the multifunction device 11 is used for business purposes, high-speed copy printing is required.
In order for the reading device 13 to support high-speed scanning, it is necessary to reinforce the ADF 16 and increase the size of the motor that is the power source for the transport section 46. Therefore, the weight of the ADF 16 increases.

6 and 7 show a frame structure in which synthetic resin members constituting the exterior of the housing 12 and the like are removed from the document reading device 14. As shown in FIGS. 6 and 7, the document reading device 14 has a rectangular frame frame 60 that constitutes the document table 31 as one of the frame structures.
The frame frame 60 has a long first frame 71 (rear frame) extending along the width direction Y at a position on the rear side where the pair of hinges 30 are arranged. The pair of hinges 30 are arranged at intervals in the depth direction X. The pair of hinges 30 are fixed to an elongated second frame 72 that is disposed in a position facing the first frame 71 of the frame frame 60 in the width direction Y so as to extend along the width direction Y. The second frame 72 is arranged parallel to the first frame 71 at a position on the rear side of the first frame 71 .

Here, the reading device 13 includes a first frame 71 that constitutes the casing 12 and supports the document table 31, and a second frame 72 that constitutes the casing 12 and to which the hinge 30 is fixed. Specifically, the frame frame 60 includes a first frame 71, a third frame 73 arranged parallel to the first frame 71 at a position opposite to the second frame 72, and a first frame 71 and a third frame 73. A pair of fourth frames 74 are fixed to both ends of each of the three frames 73 and extend in a direction intersecting the longitudinal direction of the first frame 71 and the third frame 73. Here, the first frame 71 is a rear frame that constitutes the rear part of the frame frame 60, and the third frame 73 is a front frame that constitutes the front part of the frame frame 60. Further, the pair of fourth frames 74 are a pair of side frames that constitute both sides of the frame frame 60 in the width direction Y.

The first frame 71 and the third frame 73 have a U-shaped cross section cut in a direction intersecting the longitudinal direction, and are arranged with the opening of the U-shaped portion facing inward. The first frame 71 is formed into a U-shaped cross section by fastening a lower frame 71A with an L-shaped cross section disposed on the lower side and an upper frame 71B with an L-shaped cross section disposed on the upper side with screws 75. has been done. Further, the third frame 73 has a U-shaped cross section by fastening a lower frame 73A with an L-shaped cross section disposed on the lower side and an upper frame 73B with an L-shaped cross section disposed on the upper side with screws 76. is formed.

As shown in FIG. 6, one or more pillar members 77 are interposed in the U-shaped portion of the first frame 71. As shown in FIG. In the example shown in FIG. 6, a plurality of pillar members 77 are provided at different positions in the longitudinal direction (width direction Y) of the first frame 71. The height dimension of the column member 77, which is the dimension in the vertical direction Z when arranged in the U-shaped portion, is formed with high precision. After adjusting the relative position in the vertical direction Z between the lower frame 71A and the upper frame 71B that constitute the first frame 71 so that the upper end surface and the lower end surface of the column member 77 interposed therebetween are in contact with each other, the screw 75 By fastening, the height position of the upper end surface 71C of the first frame 71 is determined. Therefore, the height position of the upper end surface 71C of the first frame 71 can be accurately positioned. The upper end surface 71C of the first frame 71 is located slightly higher than the upper end surface of the fourth frame 74.

As shown in FIG. 6, the third frame 73 is also configured similarly to the first frame 71. That is, one or more pillar members 78 are interposed in the U-shaped portion of the third frame 73. In the example shown in FIG. 6, a plurality of pillar members 78 are provided at different positions in the longitudinal direction (width direction Y) of the third frame 73. The height dimension of the column member 78, which is the dimension in the vertical direction Z when arranged in the U-shaped portion, is formed with high precision. After adjusting the relative position in the vertical direction Z of the lower frame 73A and upper frame 73B that constitute the third frame 73 so that the upper end surface and lower end surface of the column member 78 interposed therebetween are in contact with each other, the screw 76 By fastening, the height position of the upper end surface 73C of the third frame 73 is determined. Therefore, the height position of the upper end surface 73C of the third frame 73 can be determined with high accuracy. The upper end surface 73C of the third frame 73 is located slightly higher than the upper end surface of the fourth frame 74. In this way, the pair of frames 71 and 73 have a U-shaped cross section that intersects with the longitudinal direction, and in this embodiment, both of the pair of frames 71 and 73 have pillars in their respective U-shaped portions. Members 77 and 78 are interposed.

The height positions of the upper end surface 71C of the first frame 71 and the upper end surface 73C of the third frame 73 are the same, and the assembly height of the glass 34 is determined by the upper end surface 71C and the upper end surface 73C. The glass 34 and the transparent plate 35 are positioned with high positional accuracy in the vertical direction Z by achieving high precision in the height positions of the upper end surface 71C and the upper end surface 73C. Therefore, if the multifunction device 11 is placed horizontally, the glass 34 and the transparent plate 35 are placed horizontally. Note that the glass 34 and the transparent plate 35 are positioned in the depth direction X and the width direction Y by two positioning pins 79 that protrude upward from the upper end surface 71C.

Further, as shown in FIG. 6, the pair of fourth frames 74 are each fixed to both ends of the first frame 71 and both ends of the third frame 73 by fastening a plurality of screws 66. Further, the pair of fourth frames 74 extend to a position beyond the first frame 71 toward the rear where the hinge 30 is located, and each rear end is fixed to both ends of the second frame 72 by fastening a plurality of screws 67. has been done. That is, in the present embodiment, the frame frame 60 of the document table 31 includes a pair of fourth frames as a pair of side frames that constitute the frame frame 60 together with the first frame 71 and extend in a direction intersecting the longitudinal direction of the first frame 71. 74. The second frame 72 is fixed to a pair of fourth frames 74. Here, the fourth frame 74, which is long in the direction of the arm of the rotational torque applied to the hinge 30, has high rigidity against the rotational torque. The second frame 72 is fixed to the fourth frame 74, which has high rigidity against this rotational torque, and is separated from the first frame 71, thereby suppressing deformation of the first frame 71. Note that the second frame 72 is fixed to the hinge 30 by fastening screws 68.

As shown in FIGS. 7 and 8, a gap G1 is formed between the first frame 71 and the second frame 72. The second frame 72 is fixed to a pair of fourth frames 74 with respect to the frame frame 60. Here, the gap G1 is such that even if the second frame 72 is deformed to the maximum due to the rotational torque that the second frame 72 receives from the hinge 30 due to the weight of the ADF 16 when the cover 15 is opened, the second frame 72 is set to a gap size that does not make contact with the first frame 71.

As shown in FIGS. 8 and 9, when the second frame 72 and the fourth frame 74 are deformed, the bottom part 61 of the housing 38 is positioned to face the second frame 72 and the fourth frame 74, respectively. Protrusions 61A and 61B are provided as examples of contact portions, respectively. That is, on the bottom part 61 located below the second frame 72 and the frame frame 60, a protrusion 61A is located at a position facing the second frame 72, and a protrusion 61A is located at a position facing the portion of the fourth frame 74 near the hinge 30. The protrusion 61B is located at. The protrusions 61A and 61B are arranged below the lower surfaces of the second frame 72 and the fourth frame 74 with a gap therebetween. In this example, the protrusions 61A and 61B are ribs protruding from the upper surface of the bottom 61.

As shown in FIG. 9, a protrusion 61B is disposed at the left rear end of the document table 31 at a position facing the second frame 72 with a gap therebetween. Further, as shown in FIG. 10, a protrusion 61B is disposed at the right rear end of the document table 31 at a position facing the second frame 72 with a gap therebetween. In the example shown in FIGS. 9 and 10, the protrusion 61A is arranged below the portion where the fourth frame 74 overlaps with the lower side of the second frame 72, so that the fourth frame 74 overlaps with the second frame 72. A protrusion 61B is disposed at a position facing downwardly from the portion 74 with a gap therebetween. That is, a gap of a necessary size is provided between the portion of the fourth frame 74 that overlaps with the second frame 72 and the protrusion 61B. In this respect, it can be said that the protrusions 61A and 61B are located below the portion of the fourth frame 74 near the hinge 30 (rear portion) with a gap of a necessary size in between. In this manner, in this example, a total of four protrusions 61A, 61B are provided, two on the left and two on the left and right, below the portion of the pair of left and right fourth frames 74 near the hinge 30.

When the ADF 16 is in the closed state, there is a gap between the fourth frame 74 and the protrusions 61A and 61B, and when the ADF 16 is opened, its own weight is transferred to the rear side, and the weight of the ADF 16 is applied to the second frame 72 and the fourth frame. When the frame 74 is deformed downward, the respective frames 72, 74 are received by the protrusions 61A, 61B. Due to tolerance, the gap is set to such a size that the fourth frame 74 does not come into contact with the protrusions 61A, 61B when the ADF 16 is in the closed state. This is because if the ADF 16 is closed and the gap is not set and the frame 60 is deformed due to variations within the tolerance, the position of the glass 34 held on the top surface of the frame 60 will shift in the vertical direction Z. This is because the accuracy of the initial position of the glass 34 may deteriorate. In order to increase the accuracy of the initial position of the glass 34, a gap is provided between the portion of the fourth frame 74 near the hinge 30 and the protrusions 61A, 61B when the ADF 16 is in the closed state. Note that there may be a configuration in which the fourth frame 74 does not overlap the lower side of the second frame 72 and the second frame 72 faces the protrusion 61A, or a portion of the second frame 72 where the protrusion 61A does not overlap with the fourth frame 74. In the case of a configuration in which the protrusion 61A is disposed at a position facing the second frame 72, the protrusion 61A is disposed below the second frame 72 with a gap therebetween.

FIG. 11 shows the ADF 16 with the exterior cover removed. As shown in FIG. 11, the ADF 16 has a frame 80 that supports the transport section 46. The frame 80 includes a pair of side plate frames 81 that face each other at a predetermined interval in the rotation radial direction, and a plurality of support frames 82 that support the pair of side plate frames 81. A plurality of parts are assembled on the outside of the side plate frame 81, including a gear mechanism 83, an electric motor (not shown) that serves as a drive source for the transport section 46, and various sensors 84. Further, a plurality of holder members 85 are attached to the frame 80, which cover the transport section 46 and form a transport path T (see FIG. 4).

As shown in FIG. 12, the hinge 30 includes a first member 30A and a second member 30B that are connected to be relatively rotatable. The first member 30A is fixed to the second frame 72. Further, the second member 30B supports the ADF 16 and the cover 15. The ADF 16 includes a reinforcing frame 86 fixed to the second member 30B and extending in the radial direction of rotation of the cover 15.
A frame 80 of the ADF 16 is fixed to a reinforcing frame 86. Note that in the closed state shown in FIG. 12 in which the cover 15 is closed, the rotation radial direction coincides with the depth direction X.

As shown in FIG. 12, the reinforcing frame 86 extends in the rotational radial direction to a position exceeding the center of gravity CG of the ADF 16 and the cover 15. In this example, the reinforcing frame 86 extends to a position where its tip touches or is slightly spaced from the side plate frame 81 on the handle side, which is the tip side in the rotational radial direction of the ADF 16.

As shown in FIGS. 12 and 13, the frame 80 of the ADF 16 includes a support frame 82A that supports a pair of side plate frames 81 in addition to the support frame 82 shown in FIG. The support frame 82A is fixed to the side plate frame 81 at a position lower than the intermediate position in the height direction of the side plate frame 81, that is, in the tangential direction of the rotation arc of the ADF 16. Further, as shown in FIG. 13, the support frame 82A is fixed at a position opposite to the document tray 17 (see FIG. 11) side with respect to the side plate frame 81 in the width direction Y. The reinforcing frame 86 is located above the supporting frame 82A. The reinforcing frame 86 is fixed to the support frame 82A at two points at both ends in the rotation radial direction, and is separated from the support frame 82A by a gap G2 in at least a part of the range between the fixed points at both ends. It is arranged as follows.

As shown in FIG. 12, the support frame 82A has a pair of protrusions 87 that protrude toward the reinforcing frame 86 at both longitudinal ends thereof. In this example, the pair of protrusions 87 are formed by drawing a truncated cone shaped sheet metal of the support frame 82A. The reinforcing frame 86 is fixed to the support frame 82A by fastening screws 88 to the pair of protrusions 87 while in contact with a pair of protrusions 87 that are constricted parts of the support frame 82A. . Therefore, the reinforcing frame 86 and the supporting frame 82A are separated by a gap G2 between the pair of protrusions 87. For example, even if the reinforcing frame 86 is deformed into a curved shape in which the longitudinal center portion bulges upward due to the weight of the ADF 16 when the ADF 16 is opened, the supporting frame 82A is deformed by receiving an upward force due to the deformation of the reinforcing frame 86. It is restrained from doing so.

As shown in FIGS. 4 and 13, the reinforcing frame 86 has a U-shaped cross section in a direction intersecting the rotation radial direction. As shown in FIGS. 12 and 13, the reinforcing frame 86 is fixed to a support frame 82A located below the reinforcing frame 86 at a U-shaped bottom portion 86A with a screw 88, which is an example of a threaded member. ing. The screw 88 is fastened in such a direction that the tangential direction at the bottom 86A of the rotation arc of the ADF 16 is the axial direction. In other words, when the ADF 16 is in the closed state, the screws 88 are fastened with their axial directions aligned with the vertical direction Z, thereby fixing the reinforcing frame 86 and the support frame 82A.

As shown in FIG. 4, in the ADF 16, the second reading section 42 that reads the document D midway along the transport path T is arranged at a different position in the depth direction X from the first reading section 41 when it is at the reading position SP. has been done. The reinforcing frame 86 is arranged within the range SA between the respective outer ends of the first reading section 41 and the second reading section 42 when they are at the reading position in the width direction Y that intersects the rotation radial direction of the ADF 16. has been done. Here, in the example shown in FIG. 4, the range SA includes the first end of the first reading unit 41 at the reading position on the side opposite to the document tray 17 side, and the first end of the second reading unit 42 on the side of the document tray 17. The range is from the first end to the second end including the two ends. In the example shown in FIG. 4, the reinforcing frame 86 is entirely located within the range SA in the width direction Y. Note that the position of the reinforcing frame 86 in the width direction Y does not require that all of the reinforcing frame 86 be within the range SA, but only as long as a part of the reinforcing frame 86 is within the range SA.

Next, the operation of the multifunction device 11 will be explained.
When the multifunction device 11 receives a read command or a copy command through the user's operation of the operation unit 23 or the operation of a host device (not shown), the multifunction device 11 performs the instructed read operation or copy operation. Before operation, the user sets the original D on the top surface of the glass 34 of the original platen 31 or sets one or more originals D on the original tray 17 in advance. When the user sets the document D on the document table 31, the user opens the cover 15 to expose the glass 34 of the document table 31 as shown in FIG. Set it in place.

In this way, the user opens and closes the ADF 16 every time the original D is set on the original table 31 and every time the original D is taken out from the original table 31. In this way, in the multifunction device 11, the ADF 16 is repeatedly opened and closed. In the open state of the ADF 16 shown in FIG. 3, the hinge 30 bears the weight of the cover 15 and the ADF 16, so the document table 31 receives the weight via the hinge 30.

In the reading device 13 of this embodiment, a first frame 71 that supports the document table 31 and a second frame 72 that fixes the hinge 30 are separated. Therefore, when opening and closing the cover 15 on which the ADF 16 is mounted, the load of the ADF 16 and the cover 15 is difficult to be transmitted to the first frame 71 that supports the document table 31 via the hinge 30. As a result, deformation of the first frame 71 due to this type of load is prevented, and displacement of the document table 31 supported by the first frame 71 is suppressed. Therefore, the displacement of the original document D set on the document table 31 is suppressed, and the positional displacement of the first reading section 41 within the document table 31 is also suppressed.

The deformation of the document table 31 causes, for example, the position of the document D set on the glass 34 of the document table 31 at a predetermined position aligned with the side of the frame 33. In this case, the first reading unit 41 reads a shifted area of the document D, and the obtained read image is misaligned. Further, the deformation of the document table 31 may, for example, cause a difference in the height position at both ends of the first reading section 41 in the depth direction X within the document table 31, and the parallelism between the first reading section 41 and the glass 34. decreases. In this case, there is a difference in the distance from the first reading section 41 to the document D set at a predetermined position on the glass 34 at two different locations on the first reading section 41, and the position of the document D is partially at the focal distance. There is a risk that it may deviate from the position. In particular, when the first reading section 41 is a CIS with a shallow depth of field compared to a CCD, the document D on the glass 34 or the portion of the document D that is fed and exposed through the opening 37 is exposed to the first reading section 41. is not within the depth of field, and the read image of document D becomes partially blurred. However, in this embodiment, since the deformation of the document table 31 is suppressed, the parallelism between the first reading section 41 and the glass 34 is maintained, and the distance between the first reading section 41 and the glass 34 is determined in advance. is maintained within a certain range. Therefore, when reading the original D set on the original platen 31 and the original D conveyed by the ADF 16, high-quality read images can be obtained.

In addition, since there is a gap G1 between the first frame 71 and the second frame 72, even if the second frame 72 is deformed due to the load when opening and closing the ADF 16 and cover 15, the deformed second frame 72 The frame 72 does not contact the first frame 71. Therefore, deformation of the first frame 71 due to contact of the deformed second frame 72 with the first frame 71 can be avoided. From this point of view, displacement of the document table 31 fixed to the first frame 71 is effectively suppressed. As a result, it is possible to more reliably suppress misalignment of the read image and deterioration in image quality caused by misalignment of the document table 31.

Furthermore, in the reading device 13, when the cover 15 is closed with respect to the document table 31, the radial direction of the rotation of the cover 15 via the hinge 30 is the longitudinal direction, and a pair of radial directions extending in a direction strong against the torque when the cover is rotated is formed. The fourth frame 74 (side frame) and the second frame 72 are fixed. Therefore, even if the cover 15 is repeatedly opened and closed, the load transmitted through the hinge 30 is received by the fourth frame 74, which has high rigidity against rotational torque, so that deformation or displacement of the document table 31 is suppressed.

In addition, the frame 80 of the ADF 16 is fixed to a reinforcing frame 86 that extends in the rotation radius direction of the cover 15 while being fixed to the second member 30B that constitutes the hinge 30, so that opening and closing of the ADF 16 and the cover 15 is prevented. Even if repeated, deformation of the ADF 16 is suppressed. Therefore, when the ADF 16 feeds the original D onto the original platen 31, the difference in distance between the original D and the first reading section 41 at both ends of the cover 15 in the rotational radial direction is suppressed to be small. Therefore, when the first reading unit 41 reads the original D, the entire original D is read as a high-quality image without blur.

Therefore, even if the weight of the ADF 16 increases due to demands for faster scanning or copying, when the user instructs a reading operation, a high-quality scanned image of the document D can be obtained at high speed. In this case, a high-quality copy of the document D can be obtained at high speed.

According to the above embodiment, the following effects can be obtained.
(1) The reading device 13 includes a housing 12 having a document table 31 on which a document D is placed, a cover 15 that rotates via a hinge 30 at the top of the housing 12, and an ADF 16 mounted on the cover 15. , a first reading section 41 that reads the original D placed on the original table 31 and the original D fed by the ADF 16. Further, the reading device 13 includes a first frame 71 that constitutes the casing 12 and supports the document table 31, and a second frame 72 that constitutes the casing 12 and to which the hinge 30 is fixed. Therefore, in the reading device 13, since the first frame 71 that supports the document table 31 is separated from the second frame 72 that fixes the hinge 30, when the cover 15 on which the ADF 16 is mounted is opened or closed, the ADF 16 and the cover 15 are separated. This makes it difficult for the load to be transmitted to the first frame 71 that supports the document table 31 via the hinge 30. As a result, deformation of the first frame 71 due to this type of load is suppressed, and displacement of the document table 31 supported by the first frame 71 is suppressed. Therefore, the positional shift of the original D set on the original platen 31 can be suppressed. Therefore, in the reading device 13 including the document table 31 and the ADF 16, a high-quality read image of the document D can be obtained.

(2) In the reading device 13, a gap G1 is formed between the first frame 71 and the second frame 72. Therefore, even if the second frame 72 is deformed due to the loads when opening and closing the ADF 16 and the cover 15, the deformed second frame 72 is unlikely to come into contact with the first frame 71. Therefore, deformation of the first frame 71 due to contact of the deformed second frame 72 with the first frame 71 can be avoided. As a result, displacement of the document table 31 supported by the first frame 71 is suppressed. It is possible to more reliably suppress the deterioration of the image quality of the read image due to the positional shift of the document table 31.

(3) The reading device 13 includes a pair of side frames that constitute the housing 12, constitute the frame frame 60 of the document table 31 together with a first frame 71, and extend in a direction intersecting the longitudinal direction of the first frame 71. The second frame 72 is fixed to a pair of side frames. Therefore, in the reading device 13, when the cover 15 is closed with respect to the document table 31, the radial direction of the rotation of the cover 15 via the hinge 30 is the longitudinal direction, and the pair extends in a direction that is strong against the torque when the cover 15 is rotated. Since the cover 15 is fixed to the side frame of the cover 15, deformation or displacement of the document table 31 due to repeated opening and closing of the cover 15 can be suppressed.

(4) The document table 31 includes a housing 38 that movably accommodates the first reading section 41.
The bottom part 61 of the housing 38 is provided with protrusions, which are examples of abutting parts, at positions facing both the second frame 72 and the fourth frame 74, which is an example of a side frame, and which come into contact with the second frame 72 and the fourth frame 74, which is an example of a side frame. Sections 61A and 61B are provided. Therefore, even if one or both of the second frame 72 and the fourth frame 74 is deformed downward due to the rotational torque transmitted through the hinge 30 due to the weight of the ADF 16 when the cover 15 is opened, the respective protrusions 61A and 61B, the amount of deformation of the second frame 72 and the fourth frame 74 is suppressed to a predetermined amount or less. As a result, displacement of the document table 31 is suppressed. Therefore, it is possible to more effectively suppress the deterioration in the image quality of the read image of the document D caused by the positional shift of the document table 31.

(5) The document table 31 includes a pair of frames 71 and 73 including a first frame 71 and a third frame arranged parallel to the first frame 71 at a position opposite to the second frame 72. have. The pair of frames 71 and 73 have a U-shaped cross section that intersects with the longitudinal direction. Pillar members 77 and 78 are interposed in the U-shaped portions of one or both of the pair of frames 71 and 73. Therefore, pillar members 77 and 78 are interposed in the U-shaped portions of one or both of the pair of front and rear frames 71 and 73 that constitute the document table 31. Therefore, even if a load is applied from above to the frames 71, 73 with the pillar members 77, 78 interposed therebetween, the frames 71, 73 are not easily deformed. For example, when the column member 77 is interposed in the first frame 71, even if the load of the ADF 16 and the cover 15 is applied to the first frame 71 via the hinge 30, the column member 77 is interposed in the U-shaped portion of the first frame 71. The pillar member 77 can suppress deformation of the first frame 71. Further, for example, if the third frame 73 has a pillar member 78 interposed therein, even if the user presses down the ADF 16 and the portion (front portion) of the cover 15 opposite to the hinge 30, the U of the third frame 73 Deformation of the third frame 73 can be suppressed by the pillar member 78 interposed in the letter-shaped portion.

(6) The hinge 30 includes a first member 30A and a second member 30B that are connected to be relatively rotatable. The first member 30A is fixed to the second frame 72, and the second member 30B supports the ADF 16 and the cover 15. The reading device 13 includes a reinforcing frame 86 fixed to the second member 30B and extending in the radial direction of rotation of the cover 15. A frame 80 of the ADF 16 is fixed to a reinforcing frame 86. Therefore, since the frame 80 of the ADF 16 is fixed to the reinforcing frame 86 extending in the rotation radius direction of the cover 15 while being fixed to the second member 30B constituting the hinge 30, the ADF 16 and the cover 15 can be opened and closed. Even if the process is repeated, deformation of the ADF 16 can be suppressed. As a result, when the ADF 16 feeds the original D onto the original table 31, the difference in distance between the original D and the first reading unit 41 at both ends of the cover 15 in the rotational radial direction is suppressed to be small. Therefore, the entire document D in the radial direction of cover rotation falls within the depth of field of the first reading unit 41, so that the entire document D can be read as a high-quality image with little blur. Therefore, in the reading device 13 including the document table 31 and the ADF 16, a high-quality read image of the document D can be obtained.

(7) The reinforcing frame 86 extends in the rotation radial direction to a position beyond the center of gravity of the ADF 16 and the cover 15. Therefore, the reinforcing frame 86 receives the load applied to the center of gravity of the ADF 16 and the cover 15, so that deformation of the ADF 16 and the cover 15 due to repeated opening and closing can be suppressed more effectively. Therefore, the difference in distance between the document D fed to the reading position by the ADF 16 and the first reading unit 41 at both ends in the radial direction of cover rotation is suppressed. As a result, the entire document D can be read as a high-quality image with less blur.

(8) A first reading section 41 movably housed in the document table 31 and a second reading section 42 that reads the document D midway along the transport path T in the ADF 16 are provided. The reinforcing frame 86 is provided at the outer end of each of the first reading section 41 and the second reading section 42 at the reading position for reading the document D conveyed by the ADF 16 in the width direction intersecting the rotation radial direction of the ADF 16. located in the range between. Therefore, the reinforcing frame 86 is disposed in the width direction of the ADF 16 in the range between the respective outer ends of the first reading section 41 and the second reading section 42 at the reading position. Therefore, deformation of the peripheral portions of the first reading section 41 and the second reading section 42 is suppressed to a small extent by the reinforcing frame 86. Therefore, even when the first reading unit 41 reads, for example, the first side of the original D transported by the ADF 16 at the reading position, the second reading unit 41 reads, for example, the second side of the original D transported by the ADF 16 in the middle of the transport path T. 42 can also read the original D with high reading accuracy.

(9) The frame 80 of the ADF 16 includes a pair of side plate frames 81 disposed on both sides in the rotation radial direction, and a support frame 82A that supports the pair of side plate frames 81.
The reinforcing frame 86 is located above the support frame 82A, is fixed to the support frame 82A at both ends in the rotation radial direction, and has a gap with the support frame 82A in at least a part of the range between the fixed points at both ends. It is located across G2. Therefore, the support frame 82A is reinforced by the reinforcement frame 86, and even if the support frame 82A is deformed and the portion between both ends of the support frame 82A is displaced in the direction approaching the reinforcement frame 86, the gap G2 The presence of the support frame 82A prevents the support frame 82A from contacting and pushing the reinforcing frame 86. As a result, deformation of the ADF 16 due to the deformed portion of the support frame 82A hitting the reinforcing frame 86 can be suppressed.

(10) The reinforcing frame 86 has a U-shaped cross section in a direction intersecting the rotation radius direction, and has a U-shaped bottom with respect to the supporting frame 82A located below the reinforcing frame 86. It is fixed by a screw 88, which is an example of a screw member whose axial direction is the tangential direction of the rotation radius. Therefore, even if the reinforcing frame 86 curves when the cover 15 rotates via the hinge 30, the positions where the reinforcing frame 86 and the support frame 82A are fixed by the screws 88 are unlikely to shift. The positioning of the fixing point between the reinforcing frame 86 and the support frame 82A by fastening the screws 88 is performed by surface-to-surface friction at the fastening point, and the direction in which the reinforcing frame 86 is curved and displaced is parallel to the friction surface. direction, the fixed position will shift. However, the direction in which the reinforcing frame 86 is curved and displaced is not parallel to the friction surface caused by the fastening of the screw 88, but is in the axial direction of the screw 88, so that the fixed position is unlikely to shift. Note that when the opening angle of the cover 15 is small, the reinforcing frame 86 tends to curve due to the moment, and even when the cover 15 is closed, the reinforcing frame 86 tends to curve when the user presses the rotating tip of the cover 15.

(11) The multifunction device 11, which is an example of a copying device, has a reading device 13 and a recording section 26 in the housing 12 that records the image of the document D read by the first reading section 41 of the reading device 13 on a medium. It has a recording device 29. A recording device 29 is arranged below the reading device 13. Therefore, the recording unit records an image of the original D read by the reading device 13 with high precision on the medium, so that the multifunction device 11, which is an example of a copying device, can print the original D with high accuracy, suppressing misalignment and deterioration of image quality. It can be copied with precision.

Note that the above embodiment can also be modified into forms such as the following modification examples. Furthermore, a further modification may be made by appropriately combining the above embodiment and the modifications shown below, or a further modification may be made by appropriately combining the modifications shown below.

- The reading device 13 is not limited to the configuration provided in the multifunction device 11, which is an example of a copying device. The reading device may be, for example, the scanner device 100 shown in FIGS. 14 and 15. The scanner device 100 includes a housing 12 having a document table 31, a cover 15 that rotates via a hinge 30 (see FIG. 15) at the top of the housing 12, and a feeding unit mounted on the cover 15, as an example. ADF 16. The ADF 16 has a flatbed scanner function that reads the original D placed on the glass 34 of the original platen 31 that is exposed when the cover 15 is opened, and the ADF 16 has a flatbed scanner function that reads the original D placed on the glass 34 of the original platen 31 that is exposed when the cover 15 is opened. It is equipped with a sheet feeder type scanner function that automatically feeds the document D one by one and reads the document D while it is being transported. The scanner device 100 includes a first frame 71 (see FIG. 6) that constitutes the casing 12 and supports the document table 31, and a second frame 72 that constitutes the casing 12 and to which the hinge 30 is fixed. That is, as in the embodiment described above, the document table 31 has a frame frame 60 including a first frame 71, a third frame 73, and a pair of fourth frames 74, and a hinge 30 fixed thereto, as shown in FIG. and a second frame 72. The first frame 71 and the second frame 72 face each other in the depth direction X with a gap G1 (see FIGS. 7 and 8) interposed therebetween. In this way, the scanner device 100 has the same structure as the reading device 13 of the multifunction device 11 of the embodiment.
In addition, the ADF 16 also has a structure similar to that of the ADF 16 included in the reading device 13 of the multifunction device 11, such as having a structure including a reinforcing frame 86. Note that the document reading device 14 is provided with an operation unit 101 that is operated by the user when instructing a reading operation or the like.

- The protrusion 61A may be provided at intervals only below the portion of the fourth frame 74 that corresponds to the first frame 71. Furthermore, the protrusions 61B may be provided at intervals only below the portion of the fourth frame 74 that corresponds to the second frame. Further, the protrusion 61B may be provided below a portion of the second frame 72 that does not overlap with the fourth frame 74. Furthermore, a protrusion may be arranged below a portion of the first frame 71 that does not overlap with the fourth frame 74 with a gap in between.

- The protrusions 61A and 61B may be arranged not only at the rear of the document table 31 but also at the front. For example, a protrusion may be provided below the third frame 73. That is, protrusions may be provided at intervals below a portion of the fourth frame 74 that corresponds to the third frame 73. Furthermore, protrusions may be provided at intervals below the portion of the third frame 73 that does not overlap with the fourth frame. According to this configuration, even when the user applies a load by pressing the front part of the ADF 16 with his/her hand during scanning or copying, the protrusion can receive the load. Therefore, the frame frame 60 that holds the document table 31 is less likely to deform, and it is possible to suppress the displacement of the first reading section 41, the glass 34, etc. due to the deformation of the document table 31. Therefore, even if the user presses down on the front part of the ADF 16, a high-quality read image can be obtained.

- The protrusions 61A and 61B may be formed by fixing a member separate from the housing 38 to the bottom portion 61.
- The structure may be such that the pillar member 77 or 78 is interposed in the U-shaped portion of only one of the pair of frames 71 and 73. For example, of the pair of frames 71 and 73, only the first frame 71 has a U-shaped portion in which the column member 77 is interposed. Further, for example, a structure is adopted in which a pillar member 78 is interposed in the U-shaped portion of only the third frame 73 among the pair of frames 71 and 73.

- The reinforcing frame 86 may extend so that its tip passes through a hole opened in the side plate frame 81 on the hand side.
- The reinforcing frame 86 and the support frame 82A may be in contact with each other without the gap G2 as long as they are not fixed between the fixing points at both ends.

- The reinforcing frame 86 may be arranged below the support frame 82A, and may be fixed to the support frame 82A with a gap G2 in between the fixing points at both ends. Further, the reinforcing frame 86 may be fixed to another support frame 82.

- The reinforcing frame 86 may be configured to have a U-shaped cross section by fixing two frames each having an L-shaped cross section intersecting the longitudinal direction.
- The screw member may be a bolt instead of the screw 88.

- In the configuration in which the reinforcing frame 86 is provided in the ADF 16, the first frame 71 of the frame 60 and the second frame 72 to which the hinge 30 is fixed are fixed, or the first frame 71 of the frame 60 is fixed to the hinge 30. You may also do so. Even in these configurations, deformation of the ADF 16 is suppressed by the reinforcing frame 86, and the document D conveyed by the ADF 16 can be read with high accuracy.

The technical ideas understood from the embodiment and the modified examples will be described below along with their effects.
The reading device includes a housing having a document table on which a document is placed, a cover that rotates via a hinge at an upper part of the housing, a feeding unit mounted on the cover, and a document table placed on the document table. a reading section that reads the originals fed by the feeding section; a first frame forming the casing and supporting the document table; a second frame forming the casing and to which the hinge is fixed; It has a frame.

According to this configuration, in the reading device, the first frame that supports the document table is separated from the second frame that fixes the hinge, so when the cover on which the feeding section is mounted is opened and closed, the feeding section and the second frame are separated. It becomes difficult for the load of the cover to be transmitted to the first frame supporting the document table via the hinge. As a result, deformation of the first frame due to this type of load is suppressed, and displacement of the document table supported by the first frame is suppressed. Therefore, it is possible to suppress misalignment of the original set on the original table. Therefore, a high-quality read image of a document can be obtained in a reading device that includes a document table and a feeding section.

In the reading device, a gap may be formed between the first frame and the second frame.
According to this configuration, even if the second frame is deformed due to the load when opening and closing the feeding section and the cover, the deformed second frame is unlikely to come into contact with the first frame. Therefore, deformation of the first frame due to contact of the deformed second frame with the first frame can be avoided. As a result, displacement of the document table supported by the first frame is suppressed.
It is possible to more reliably suppress the deterioration in the image quality of the read image due to the positional shift of the document table.

The above-mentioned reading device includes a pair of side frames that constitute the casing, constitute the frame frame of the document table together with the first frame, and extend in a direction intersecting the longitudinal direction of the first frame, and the second frame is , may be fixed to the pair of side frames.

According to this configuration, in the reading device, when the cover is closed with respect to the document table, the radial direction of the rotation of the cover via the hinge is the longitudinal direction, and the pair of sides extend in a direction that is strong against torque when the cover is rotated. Since the frame and the second frame are fixed, deformation or displacement of the document table due to repeated opening and closing of the cover can be suppressed.

In the above-mentioned reading device, the document table includes a housing that movably houses the reading section, and a bottom portion of the housing is provided with: A contact portion that comes into contact when one or both of them is deformed downward may be provided.

According to this configuration, even if one or both of the second frame and the side frame deforms downward due to the torque transmitted through the hinge due to the weight of the feeding section when the cover is opened, it will not hit the abutment section. Thus, the amount of deformation of one or both of the second frame and the side frame is suppressed to a predetermined amount or less. Therefore, misalignment of the document table is suppressed. As a result, it is possible to more effectively suppress the deterioration in the image quality of the read image of the original due to the positional shift of the original table.

In the above-mentioned reading device, the document table includes a pair of frames including the first frame and a third frame arranged in parallel at a position opposite to the second frame with respect to the first frame. The pair of frames have a U-shaped cross section intersecting the longitudinal direction, and a pillar member is interposed in the U-shaped portion of one or both of the pair of frames. It's okay.

According to this configuration, a pillar member is interposed in the U-shaped portion of one or both of the pair of front and rear frames that constitute the document table. Therefore, even if a load is applied from above to the frame in which the column member is interposed, the frame is not easily deformed. For example, when a column member is interposed in the first frame, even if the load of the feeding section and the cover is applied to the first frame through the hinge, the column member interposed in the U-shaped portion of the first frame , deformation of the first frame is suppressed. For example, if a pillar member is interposed in the third frame, even if the user presses the feeding section and the cover from above to prevent the document from lifting up on the document table, the third frame Deformation of the third frame is suppressed by the pillar member interposed in the U-shaped portion.

In the reading device, the hinge includes a first member and a second member connected to each other so as to be relatively rotatable, the first member being fixed to the second frame, and the second member being fixed to the feeding section. and a reinforcing frame that supports the cover and extends in a radial direction of rotation of the cover while being fixed to the second member, and the frame of the feeding section may be fixed to the reinforcing frame.

According to this configuration, the frame of the feeding section is fixed to the reinforcing frame extending in the rotation radial direction of the cover while being fixed to the second member constituting the hinge. Even if opening and closing are repeated, deformation of the feeding section can be suppressed. As a result, when the feeding section feeds the document onto the document table, the difference in distance between the document and the reading section at both ends in the rotational radial direction of the cover is suppressed to be small. Therefore, the entire document in the radial direction of cover rotation falls within the depth of field of the reading unit, so that the entire document can be read as a high-quality image with less blur.

The reading device includes a housing having a document table on which a document is placed, a cover that rotates via a hinge at an upper part of the housing, a feeding unit mounted on the cover, and a document table placed on the document table. a reading unit that reads the original document fed by the feeding unit, and the hinge includes a first member and a second member that are relatively rotatable, and the first member is attached to the housing. a reinforcing frame fixed to a frame constituting the body, the second member supporting the feeding section and the cover, and extending in the rotation radial direction of the cover while fixed to the second member; The frame of the feeding section may be fixed to the reinforcing frame.

According to this configuration, the frame of the feeding section is fixed to the reinforcing frame extending in the rotation radius direction of the cover while being fixed to the second member constituting the hinge, so that the feeding section is mounted. Even if the cover is repeatedly opened and closed, deformation of the feeding section can be suppressed. As a result, when the feeding section feeds the document onto the document table, the difference in distance between the document and the reading section at both ends in the radial direction of cover rotation can be suppressed to a small value. Therefore, the entire document in the radial direction of cover rotation falls within the depth of field of the reading unit, so that the entire document can be read as a high-quality image with less blur. Therefore, a high-quality read image of a document can be obtained in a reading device that includes a document table and a feeding section.

In the reading device, the reinforcing frame may extend in the rotation radial direction to a position beyond the center of gravity of the feeding section and the cover.
According to this configuration, the reinforcing frame receives the load applied to the center of gravity of the feeding section and the cover, so that deformation due to repeated opening and closing of the feeding section and the cover can be more effectively suppressed. Therefore, the difference in distance between the document fed to the reading position by the feeding section at both ends in the cover rotation radial direction and the reading section is suppressed to a small value. As a result, the entire document can be read as a high-quality image with less blur.

The above reading device includes a first reading section as the reading section that is movably housed in the document table, and a second reading section that reads the document in the middle of the conveyance path in the feeding section, and the reinforcing frame is the outer side of each of the first reading section and the second reading section located at the reading position for reading the document conveyed by the feeding section in the width direction intersecting the rotation radial direction of the feeding section; It may be arranged in the range between the ends.

According to this configuration, the reinforcing frame is disposed in the range between the respective outer ends of the first reading section and the second reading section at the reading position in the width direction of the feeding section. Therefore, deformation of the peripheral portions of the first reading section and the second reading section is suppressed to a small extent by the reinforcing frame. Therefore, when the first reading section reads, for example, the first side of the document conveyed by the feeding section, and when the second reading section reads, for example, the second side of the document conveyed by the feeding section midway through the conveyance path. It is also possible to read documents with high reading accuracy.

In the reading device, the frame of the feeding section includes a pair of side plate frames arranged on both sides in the rotation radial direction, and a support frame supporting the pair of side plate frames, and the reinforcing frame is located above or below the support frame, is fixed to the support frame at both ends in the rotation radial direction, and is connected to the support frame in at least a part of the range between the fixed points at both ends. They may be arranged with a gap in between.

According to this configuration, the reinforcing frame is fixed to the support frame at both ends in the rotation radial direction, and a gap is provided between the reinforcing frame and the support frame in at least a part of the range between the fixed points at both ends. . Therefore, the supporting frame is reinforced by the reinforcing frame, and even if the supporting frame is deformed and the portion between both ends of the supporting frame is displaced in the direction approaching the reinforcing frame, the existence of the gap will cause the supporting frame to is prevented from contacting and pushing the reinforcing frame. As a result, deformation of the feeding section due to the deformed portion of the support frame hitting the reinforcing frame can be suppressed.

In the reading device, the reinforcing frame has a U-shaped cross section in a direction intersecting the rotation radius direction, and the reinforcing frame has a U-shaped cross section with respect to the supporting frame located below the reinforcing frame. It may be fixed at the bottom of the shape by a screw member whose axial direction is the tangential direction of the rotation radius.

According to this configuration, even if the reinforcing frame curves when the cover rotates via the hinge, the positions where the reinforcing frame and the support frame are fixed by the screw members are unlikely to shift. Positioning of the reinforcing frame and the support frame at the fixed point by fastening the screw members is done by friction between the surfaces at the fastening point, and the direction in which the reinforcing frame is curved and displaced is parallel to the friction surface. If so, the fixed position will shift. However, since the direction in which the reinforcing frame is curved and displaced is not parallel to the friction surface due to the fastening of the screw member, but in the axial direction of the screw member, the fixed position is unlikely to shift. Note that the reinforcing frame tends to bend due to the moment when the opening angle of the cover is small, and even when the cover is closed, the reinforcing frame tends to bend when the user presses the pivoting tip of the cover.

The copying apparatus includes the above-mentioned reading device, and a recording device having a recording section in the housing for recording an image of a document read by the reading section of the reading device on a medium, and the above-mentioned recording device is provided below the reading device. A recording device is installed.

According to this configuration, the recording unit records an image obtained by reading the original document with high accuracy by the reading device onto the medium, so that the original document can be copied with high accuracy by the copying device while suppressing misalignment and deterioration of image quality. can.

DESCRIPTION OF SYMBOLS 11...Multifunction device as an example of a copying device, 12...Housing, 13...Reading device, 14...Document reading device, 15...Cover, 16...Automatic document feeder (ADF) as an example of a feeding unit, 17... Original tray, 26... Recording section, 27... Recording head, 28... Carriage, 29... Recording device, 30... Hinge, 30A... First member, 30B... Second member, 31... Original table, 32... Main body housing, 33... Frame, 34...Glass, 35...Transparent plate, 36...Document holding surface, 37...Opening, 38...Housing, 41...First reading section as an example of a reading section, 42...Second reading section, 44...First Sensor, 45... Carriage, 46... Transport unit, 50... Feed roller..., 51... Separate roller, 52... First guide roller, 53... Second guide roller, 54... Third guide roller, 55... Feed roller, 56 ...Discharge roller, 60...Frame frame, 61...Bottom, 61A, 61B...Protrusion as an example of the contact part, 66...Screw, 67...Screw, 68...Screw, 71...First frame, 71A...Lower frame, 71B... Upper frame, 72... Second frame, 73... Third frame, 73A... Lower frame, 73B... Upper frame, 74... Fourth frame which is an example of side frame, 75..., 76..., 77... Pillar member, 78... Pillar member, 79... Positioning pin, 80... Frame, 81... Side plate frame, 82... Support frame, 82A... Support frame, 86... Reinforcement frame, 86A... Bottom, 87... Projection, 88... As an example of screw member Screw 100...Scanner device as an example of a reading device, D...Document, P...Paper as an example of medium, T...Transport path, G1...Gap, G2...Gap, CG...Center of gravity, SP...Reading position, SA ...range, X...depth direction, Y...width direction, Z...vertical direction.

However, in the image reading unit described in Patent Document 1, when the cover on which the ADF is mounted is opened, the ADF may be deformed due to the weight of the ADF. For this reason , as the ADF is repeatedly opened and closed with respect to the scanner, the ADF deforms and the position of the document conveyed by the ADF shifts. In a reading device including a document table and a feeding section as described above, there is a problem that a good read image of the document cannot be obtained.

Claims (12)

a casing having a document table on which a document is placed;
a cover that rotates via a hinge at the top of the housing;
a feeding unit mounted on the cover;
a reading unit that reads the original placed on the original table and the original fed by the feeding unit;
a first frame that constitutes the housing and supports the document table;
a second frame that constitutes the housing and to which the hinge is fixed;
A reading device comprising: The reading device according to claim 1, wherein a gap is formed between the first frame and the second frame. a pair of side frames that constitute the casing, constitute the frame frame of the document table together with the first frame, and extend in a direction intersecting the longitudinal direction of the first frame;
3. The reading device according to claim 1, wherein the second frame is fixed to the pair of side frames. The document table includes a housing that movably accommodates the reading section,
The housing is characterized in that a bottom portion thereof is provided at a position facing one or both of the second frame and the side frame with a contact portion that comes into contact when one or both of the two frames is deformed downward. The reading device according to claim 3. The document table has a pair of frames including the first frame and a third frame arranged parallel to the first frame at a position opposite to the second frame,
The pair of frames have a U-shaped cross section intersecting the longitudinal direction,
The reading device according to any one of claims 1 to 4, wherein a pillar member is interposed in the U-shaped portion of one or both of the pair of frames. The hinge includes a first member and a second member connected so as to be relatively rotatable,
the first member is fixed to the second frame,
the second member supports the feeding section and the cover;
comprising a reinforcing frame fixed to the second member and extending in a radial direction of rotation of the cover;
The reading device according to any one of claims 1 to 5, wherein the frame of the feeding section is fixed to the reinforcing frame. a casing having a document table on which a document is placed;
a cover that rotates via a hinge at the top of the housing;
a feeding unit mounted on the cover;
a reading unit that reads the original placed on the original table and the original fed by the feeding unit,
The hinge has a first member and a second member that are relatively rotatable,
the first member is fixed to a frame constituting the housing,
the second member supports the feeding section and the cover;
comprising a reinforcing frame fixed to the second member and extending in a radial direction of rotation of the cover;
A reading device characterized in that the frame of the feeding section is fixed to the reinforcing frame. 8. The reading device according to claim 6, wherein the reinforcing frame extends in the rotation radial direction to a position beyond the center of gravity of the feeding section and the cover. A first reading section as the reading section movably housed in the document table, and a second reading section that reads the document midway through the conveyance path in the feeding section,
The reinforcing frame is configured to connect the first reading section and the second reading section, which are in a reading position for reading the document conveyed by the feeding section, in a width direction intersecting the rotation radial direction of the feeding section. A reading device according to any one of claims 6 to 8, characterized in that it is arranged in an area between the respective outer ends. The frame of the feeding section is
a pair of side plate frames arranged on both sides in the rotation radial direction;
a support frame that supports the pair of side plate frames;
has
The reinforcing frame is located above or below the support frame, is fixed to the support frame at both ends in the rotation radial direction, and is fixed to the support frame in at least a part of the range between the fixing points of the both ends. The reading device according to any one of claims 6 to 9, wherein the reading device is arranged with a gap from the support frame. The reinforcing frame has a U-shaped cross section in a direction intersecting with the rotation radius direction, and has a bottom portion of the U-shape with respect to the supporting frame located below the reinforcing frame. 11. The reading device according to claim 10, wherein the reading device is fixed by a screw member whose axial direction is a tangential direction of the rotation radius. A reading device according to any one of claims 1 to 11,
a recording device having a recording section in the housing for recording an image of a document read by the reading section of the reading device on a medium;
has
the recording device is arranged below the reading device;
A copying device characterized by: