JP7124900B2 - printing system - Google Patents

Description

The present invention relates to a document reading device represented by a scanner or the like.

2. Description of the Related Art A document reading device represented by a scanner or the like is provided with an opening/closing body that opens and closes a document platen and presses a document in the closed state. The opening/closing body may be a simple cover or may be an automatic document feeder (hereinafter referred to as ADF (Auto Document Feeder)). Further, the opening/closing body is rotatable with respect to the document table and is connected by a hinge mechanism (hereinafter abbreviated as hinge) so that it can be held at a predetermined rotation angle (opening angle). has been proposed (for example, Patent Document 1).
In the document reading device described in Patent Document 1, the opening/closing body has a mechanism (for example, a motor, a cam, a belt, a shaft, etc.) for conveying the document, and is lighter in weight than when the opening/closing body is simply a cover. have. The hinge rotatably supports the heavy opening/closing body.

JP 2016-173470 A

However, in the document reading device described in Japanese Patent Application Laid-Open No. 2002-200013, no configuration is disclosed for accurately aligning the opening/closing body with respect to the document platen. Furthermore, when a hinge is used to assemble the heavy opening/closing body to the platen, there is a problem that it is difficult to align the heavy opening/closing body with the platen with high accuracy.

The present invention has been made to solve at least part of the above problems, and can be implemented as the following forms or application examples.

[Application Example 1] A document reading apparatus according to this application example includes a document reading section having a table for reading a document placed thereon, and a document reading section which is arranged to overlap an upper surface of the document reading section and is opened with respect to the document reading section. a cover portion that can be displaced between a state and a closed state; a hinge that connects the cover portion to the document reading portion so that the cover portion can be opened and closed by rotating about a rotation shaft; and the document reading portion and the hinge. a positioning mechanism for performing positioning in the longitudinal direction of the apparatus, wherein the hinge includes a biasing member that maintains the cover in an open state, and the biasing direction of the biasing member is aligned with the document reading unit and the cover portion overlap each other, and the rotation shaft is arranged on the back side of the document reading portion so that the rotation shaft is on the upper side with respect to the biasing member. an engaging portion positioned below and formed on a surface intersecting with the axial direction of the rotation shaft of the hinge; an engaged portion formed in the document reading portion and engaged with the engaging portion; and a pressing portion that is located below positions of the engaging portion and the engaged portion and that presses a lower portion of the hinge from the rear side of the document reading portion.

The positioning mechanism has an engaging portion that engages with the engaged portion, and a pressing portion that presses the lower portion of the hinge from the rear side of the document reading portion. The hinge can be aligned with high accuracy. For example, when assembling the cover section to the document reading section, the cover section is first attached to the hinge, then the hinge attached with the cover section is attached to the document reading section, and with the cover section attached to the hinge, By adjusting the positions of the document reading section and the hinge in the device front-rear direction using the positioning mechanism, the cover section can be assembled to the document reading section with high accuracy.
Therefore, even if the cover portion has a mechanism for conveying the document and the cover portion is a simple cover, even if the cover portion is heavy in weight, the cover portion is heavy with respect to the document reading portion. Accurate alignment is possible.

APPLICATION EXAMPLE 2 In the document reading apparatus according to the application example described above, it is preferable that the engaging portion is formed in a case that accommodates the biasing member, and that the pressing portion presses the case.

Since the force resisting the self weight of the cover portion is urged from the hinge to the cover portion by the urging member, the cover portion can maintain, for example, an open state posture or a closed state posture. Further, when the pressing portion presses the case, the positions of the document reading portion and the hinge to which the cover portion is attached in the front-rear direction of the apparatus can be adjusted while maintaining the open state or the closed state. .

[Application Example 3] In the document reading device according to the application example described above, it is preferable that a plurality of the hinges are arranged, and the positioning mechanism is used for aligning the document reading portion and each of the hinges in the front-rear direction of the device. .

When a plurality of hinges are arranged and the positions of the document reading section and each hinge in the longitudinal direction of the device are adjusted by the positioning mechanism, compared to the case where a single hinge is arranged, the position of the document reading section relative to the placing table (document reading section) is reduced. In addition to connecting the cover section more stably so that it can be opened and closed, it is possible to improve the accuracy of the position of the cover section with respect to the document reading section in the front-rear direction of the apparatus.

[Application Example 4] In the document reading device according to the application example described above, the document table has a first concave portion in which the document is placed, and the cover portion is positioned inside the first concave portion in the closed state. It is preferable to have a document cover portion arranged in contact therewith.

A document cover portion is provided so as to be inscribed in the first concave portion in the closed state, and when the document placed in the first concave portion is pressed by the placing table and the document cover portion, the posture of the document is corrected to a correct state. , the document can be read correctly.

APPLICATION EXAMPLE 5 In the document reading apparatus according to the application example described above, the document reading section has a reading window for reading a document being conveyed, and the cover section includes a document conveying section for conveying the document to the reading window. It is preferable to have a part.

If the document reading section has a reading window for reading the document and the cover section has the document conveying section for conveying the document to the reading window, the document can be read by conveying the document to the reading window.

[Application Example 6] In the document reading device according to the application example described above, the second concave portion formed at least on the free end side of the document reading portion of the cover portion, and the convex portion disposed on the document reading portion are provided. Preferably, the positioning mechanism is fixed in a state in which the document reading section and the cover section are aligned by engaging the second concave section and the convex section.

A state in which the second concave portion of the cover portion and the convex portion of the document reading portion are engaged is a state in which the cover portion and the document reading portion are properly aligned. When the second concave portion of the cover portion and the convex portion of the document reading portion are engaged with each other and the positioning mechanism is fixed in a state where the cover portion and the document reading portion are fixed to each other, the cover portion and the document reading portion are properly positioned. The cover section and the document reading section can be fixed in a combined state.

APPLICATION EXAMPLE 7 In the document reading device according to the application example described above, the convex portion is detachably attached to a third concave portion formed in the document reading portion. It is preferable that the document reading section and the cover section are aligned with each other in a state where the second concave section is engaged with the document reading section.

If the convex portion is detachable from the third recess, and if the document reading portion does not need the convex portion, the unnecessary convex portion will not be formed in the document reading portion unless the convex portion is attached to the third concave portion of the document reading portion. . If the document reading portion needs a convex portion in order to properly align the cover portion and the document reading portion, the convex portion is formed on the document reading portion by attaching the convex portion to the third concave portion of the document reading portion, By engaging the convex portion of the document reading portion with the second concave portion of the cover portion, the document reading portion and the cover portion can be properly aligned.

[Application Example 8] In the document reading device according to the above application example, the document reading section can be opened relative to the lower structure of the document reading section with a rotation axis below the rotation axis of the hinge. , the second concave portion is formed of a through hole, and the third concave portion to which the convex portion is attached and detached forms a second through hole that communicates with the inside of the document reading portion by removing the convex portion. It is preferable that the cover section and the document reading section can be fastened via the through hole and the second through hole.

When the second concave portion of the cover portion is used as the through hole and the second through hole is provided in the third concave portion of the document reading portion, the cover portion and the document reading portion are fastened using the through hole and the second through hole, It is possible to prevent the cover section from being opened carelessly with respect to the document reading section.

1 is a perspective view of a printing system having a document reading device according to the embodiment; FIG. 1 is a perspective view of a printing system having a document reading device according to the embodiment; FIG. 1 is a perspective view of a printing system having a document reading device according to the embodiment; FIG. 1 is a perspective view of a printing system having a document reading device according to the embodiment; FIG. 1 is a perspective view of a document reading device according to the embodiment; FIG. FIG. 6 is an enlarged view of area A enclosed by a dashed line in FIG. 5; FIG. 6 is an enlarged view of a region B surrounded by a dashed line in FIG. 5; The perspective view of a fixing member. A perspective view of a hinge. FIG. 4 is a schematic plan view showing a state in which a convex portion and a slit are engaged; 4A and 4B are schematic diagrams showing a state of a concave portion provided in an exterior member of the scanner section; 4A and 4B are schematic diagrams showing a state of a concave portion provided in an exterior member of the scanner section; The perspective view which shows the state by which the pin and the screw were accommodated. The enlarged view of the part where a pin is accommodated. 5 is a schematic cross-sectional view of the ADF between DD in FIG. 4; FIG. FIG. 16 is a schematic cross-sectional view of a region E surrounded by a two-dot chain line in FIG. 15; FIG. 16 is a schematic cross-sectional view of a region F surrounded by a two-dot chain line in FIG. 15; FIG. 16 is a schematic cross-sectional view of a region G surrounded by a two-dot chain line in FIG. 15; FIG. 10 is a schematic cross-sectional view of a document reading device according to a modified example; The perspective view which shows the state of a front side cover. FIG. 4 is a schematic cross-sectional view showing a fixed state between the front cover and the main body of the ADF; 4 is an exploded perspective view of an exterior member of the scanner section; FIG. FIG. 2 is an exploded perspective view of the sheet metal member; The perspective view of an exterior member. Schematic which shows the state of a 1st fixing|fixed part. Schematic which shows the state of a 4th fixing|fixed part. Schematic which shows the state of a 5th fixing|fixed part.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. This embodiment shows one aspect of the present invention, does not limit the present invention, and can be arbitrarily changed within the scope of the technical idea of the present invention. Also, in each drawing below, the scale of each layer and each part is different from the actual scale so that each layer and each part is recognizable on the drawing.

(embodiment)
1 to 4 are perspective views of a printing system having a document reading device according to an embodiment. FIG. 5 is a perspective view of the document reading apparatus according to the present embodiment, and is illustrated so that the internal state of the document reading apparatus 100 can be understood. FIG. 6 is an enlarged view of area A enclosed by a dashed line in FIG. FIG. 7 is an enlarged view of area B surrounded by a dashed line in FIG. FIG. 8 is a perspective view of a fixing member. FIG. 9 is a perspective view of the hinge.
Specifically, FIG. 2 is a perspective view of the printing system 1 with the document reading device 100 opened with respect to the printing device 10 . 3 is a perspective view of the printing system 1 with the ADF 200 opened with respect to the scanner section 300. FIG. 4 and 5 are perspective views of the printing system 1 when the printing system 1 is viewed from the opposite side of FIG. Furthermore, FIG. 5 is a perspective view of the printing system 1 without the rear side covers 21, 202, and 302. FIG.
1 and 2 are perspective views of the ADF 200 closed with respect to the scanner section 300. FIG. 3 is a perspective view of the ADF 200 opened with respect to the scanner section 300. FIG.

FIGS. 1 to 7 show the X-axis, the Y-axis, and the Z-axis as three spatial axes orthogonal to each other. Of the X-axis directions along the X-axis, the +X-axis direction is the positive direction and the -X-axis direction is the negative direction. Of the Y-axis directions along the Y-axis, the +Y-axis direction is the positive direction and the −Y-axis direction is the negative direction. Of the Z-axis directions along the Z-axis, the +Z-axis direction is the positive direction and the −Z-axis direction is the negative direction. That is, the arrow side of the arrow indicating the axial direction is the + direction (positive direction), and the base end side is the - direction (negative direction). The XY plane is a horizontal plane, and the −Z axis direction is the direction of gravity. Furthermore, the XYZ axes in FIGS. 1-7 correspond to the XYZ axes in the other figures.
Note that the Y-axis direction is an example of the "device front-rear direction." Also, the +Z-axis direction side is an example of "upper" and may be hereinafter referred to as "upper". The −Z-axis direction side is an example of “downward” and may be hereinafter referred to as “downward” or “lower side”. Furthermore, the -Y axis direction side is an example of the "back side".

As shown in FIG. 1, the printing system 1 is a multi-function device having a printing function in addition to an image reading function, and includes a document reading device 100 arranged on the +Z axis direction side and a document reading device 100 arranged on the -Z axis direction side. and a printing device 10 . That is, the printing system 1 has a configuration in which the printing device 10 and the document reading device 100 are stacked in order.
Note that the printing apparatus 10 is an example of the “lower structure of the document reading unit”.

The printing device 10 is an inkjet printer that records images such as characters and photographs by ejecting ink onto paper. ), and a paper cassette 13 provided from the central portion to the lower portion of the printing apparatus 10 (on the −Z axis direction side). Four paper cassettes 13 are arranged side by side in the −Z-axis direction, and paper is accommodated in each cassette in a stacked state. Further, on the upper side (+Z-axis direction side) of the paper cassette 13 and on the right side (-X-axis direction side) of the operation unit 12, there is a discharge unit 14 for discharging paper on which images such as characters and photographs are recorded. is provided. In other words, spaces are provided in the upper and right corners of the printing apparatus 10 to accommodate the discharge section 14 . Therefore, the lower and right corner portions of the document reading device 100 are in a state of being lifted from the printing device 10 by the space for providing the discharge section 14 .

In the following description, the side on which the operation unit 12 is provided (+Y axis direction side) is referred to as the front side, the side opposite to the front side (−Y axis direction side) is referred to as the back side, and the side intersecting the front side and the back side. (+X-axis direction side, -X-axis direction side) may be referred to as a side surface.
The document reader 100 includes a paper feed tray 101 on which a document is set, an ADF (Auto Document Feeder) 200 that conveys the document from the paper feed tray 101 along a predetermined conveying path, and an image of the document conveyed from the ADF. and a discharge tray 102 for discharging the document having the image read. The ADF 200 is arranged on top of the scanner section 300 and has a document transport section 205 for transporting a document therein. A removable front cover 201 is provided on the front of the ADF 200 . A side cover 231 that can be opened and closed is provided on the side of the ADF 200 in the +X axis direction.
Note that the ADF 200 is an example of the "cover section". The scanner unit 300 is an example of a “document reading unit”.

As shown in FIG. 2, on the back side of the printing system 1, a connecting member 31 is provided to openably connect the printing device 10 and the document reading device 100 (scanner section 300). 10 can be opened and closed. With the document reading device 100 opened with respect to the printing device 10, a recording head (not shown) that ejects ink onto paper is replaced.
Specifically, the printing apparatus 10 has a recording head inside that ejects ink onto a sheet. Since the ink flow path of the printhead is clogged when the printhead is used, it is necessary to periodically perform maintenance processing such as flushing and wiping to restore the printhead to a normal state. However, if the printhead is used for a long period of time, it becomes difficult to restore the printhead to a normal state through maintenance processing, and the printhead needs to be replaced. This replacement of the recording head is performed while the document reading device 100 is open with respect to the printing device 10 .

As shown in FIG. 3 , a plurality of hinges 110 are arranged on the rear side of the document reading device 100 to connect the ADF 200 to the scanner section 300 so that the ADF 200 can be opened and closed. Specifically, the scanner unit 300 has a table 373 on which a document is placed, and a plurality of hinges 110 are arranged to connect the ADF 200 to the table 373 so that the ADF 200 can be opened and closed. The number of hinges 110 is two, and two hinges 110 are arranged along the X-axis direction. As a result, the ADF 200 rotates about the rotation shaft 115 (see FIG. 9) of the hinge 110 so that it can be opened and closed with respect to the mounting table 373 . That is, the hinge 110 connects the scanner section 300 and the ADF 200 so that the ADF 200 can be opened and closed by rotating the ADF 200 about the rotation shaft 115 with respect to the scanner section 300 .
In other words, by providing the hinge 110 , the ADF 200 is placed over the upper surface of the scanner unit 300 , and can be opened (opened) with respect to the mounting table 373 or closed with respect to the mounting table 373 . (closed state).
In the following description, a state in which the ADF 200 is opened with respect to the mounting table 373 is called an open state, and a state in which the ADF 200 is closed with respect to the mounting table 373 is called a closed state.

The scanner unit 300 is provided with a table 373 on which a document is placed on the +Z axis direction side. In other words, the scanner section 300 has a mounting table 373 for reading the mounted document. The mounting table 373 has an exterior member 380 made of resin and platen glasses 374 and 375 . Further, an image reading unit (not shown) is arranged below the platen glasses 374 and 375 .
The exterior member 380 has an opening 371 that is long in the Y-axis direction and an opening 372 that is long in the X-axis direction and arranged on the −X-axis direction side of the opening 371 . Document table glass 374 is arranged inside exterior member 380 so as to cover opening 371 . A platen glass 375 is arranged inside the exterior member 380 so as to cover the opening 372 .

When reading the image of the document conveyed by the ADF 200 , the image reading unit is stopped below the platen glass 374 . The image reading unit reads the image of the document conveyed from the ADF 200 via the document table glass 374 in the closed state.
When reading an image of a document conveyed by ADF 200 , document table glass 374 and opening 371 of exterior member 380 form a reading window for reading the image of the document. In other words, the scanner unit 300 has a reading window for reading the image of the document conveyed from the ADF 200 through the platen glass 374 and the opening 371 . ADF 200 has document transport section 205 (see FIG. 1) that transports a document to a reading window formed by document table glass 374 and opening 371 . With such a configuration, the document reading apparatus 100 can read the image of the document conveyed from the document conveying section 205 in the closed state through the document platen glass 374 .

When reading an image of a document without using the ADF 200, open the document and place the document inside the opening 372, then close the document and move the image reading unit in the -X-axis direction. read the image.
Specifically, the document is placed so that the edge of the document is in contact with the edge of the opening 372 , and the placement position of the document is determined (controlled) by the opening 372 of the exterior member 380 . A document mat 203 is provided on the side of the ADF 200 facing the scanner section 300 . When the ADF 200 is closed with respect to the platen 373 , the document placed on the platen 373 (original platen glass 375 ) is pressed by the document mat 203 so that the reading surface of the original is brought into close contact with the platen glass 375 . Then, the image of the original is read by moving the image reading unit in the -X-axis direction while the original is pressed by the original mat 203 and in close contact with the original platen glass 375 .
In other words, the table 373 has an opening 372 that is an example of a "first recess" in which the document is placed. The ADF 200 has a document mat 203, which is an example of a “document cover portion”, arranged inscribed in the opening 372 in the closed state. By moving the image reading unit in the −X direction in the closed state, the document reading apparatus 100 moves the image reading unit in the −X direction while the document is pressed by the document mat 203 and in close contact with the platen glass 375 . to read the image of the document.

As shown in FIG. 4 , a rear side cover 21 is provided on the rear side of the printing apparatus 10 . The rear cover 21 can be opened and closed with the end 15 of the housing 11 on the -X-axis direction as a fulcrum. A control circuit 22 that controls the entire printing system 1 is provided on the rear side of the printing apparatus 10, as indicated by the dashed line in the drawing. When the rear side cover 21 is opened, the control circuit 22 is exposed.
Further, a rear side cover 202 is provided on the rear side of the ADF 200 , and a rear side cover 302 is provided on the rear side of the scanner section 300 . The rear side covers 202, 302 are removable.

As shown in FIGS. 5 and 6, two hinges 110 for displacing the ADF 200 between the open state and the closed state are arranged along the X-axis direction on the rear side of the ADF 200 . A control circuit 222 that controls the ADF 200 is provided between the two hinges 110 . Furthermore, a relay board 23 is provided below the control circuit 222 . The relay board 23 is fixed to the housing 11 of the printing device 10 .

The relay board 23 is provided between the control circuit 22 (see FIG. 4) of the printer 10 and the control circuit 222 of the ADF 200 . The relay board 23 is arranged at a position closer to the control circuit 222 of the ADF 200 than the control circuit 22 of the printing apparatus 10 .
The control circuit 22 of the printer 10 and the control circuit 222 of the ADF 200 can transmit and receive signals via flexible flat cables (hereinafter referred to as FFC) 255 and 256 . The control circuit 222 controls the ADF 200 based on signals supplied from the control circuit 22 of the printer 10 .

For example, when replacing the recording head of the printing apparatus 10, the FFC that electrically connects the control circuit 22 and the control circuit 222 needs to be detached from the connector each time the recording head is replaced.
Specifically, the FFC is removed from the connectors of the control circuit 22 and the control circuit 222, the document reading device 100 is opened with respect to the printing device 10 (the state shown in FIG. 2), and after replacing the recording head, the control circuit 22 Also, it is necessary to attach the FFC to the connector of the control circuit 222 and place the document reader 100 in a closed state with respect to the printer 10 (the state shown in FIG. 1).
However, every time the FFC is attached to or detached from the connector, the FFC is deformed, mechanical stress is applied to the FFC, and there is a possibility that the FFC may be broken. When an FFC fails, it is necessary to remove the failed FFC from control circuit 22 and control circuit 222 and attach a new FFC to control circuit 22 and control circuit 222 .
Since the control circuit 22 and the control circuit 222 are separated from each other and various members are arranged between the control circuit 22 and the control circuit 222, it is assumed that the control circuit 22 and the control circuit 222 can be connected by one FFC. 222, the handling of the FFC becomes complicated, and attachment and detachment of the FFC is very troublesome, and attachment and detachment of the FFC may induce new problems in other parts.

In this embodiment, a relay board 23 is provided between the control circuit 22 of the printer 10 and the control circuit 222 of the ADF 200 .
The relay board 23 is provided with a connector 236 to which the FFC 256 is connected, and the control circuit 22 of the printing apparatus 10 is provided with a connector (not shown) to which the FFC 256 is connected. The relay board 23 and the control circuit 22 of the printer 10 are connected by the FFC 256 .
Further, the relay board 23 is provided with a connector 235 to which the FFC 255 is connected, and the control circuit 222 of the ADF 200 is provided with a connector 225 to which the FFC 255 is connected. Specifically, the control circuit 222 of the ADF 200 is provided with a connector 225 to which the partially branched FFC 255a is connected. The relay board 23 and the control circuit 222 of the ADF 200 are electrically connected by the FFC 255 .
In other words, the FFCs 255 and 256 electrically connect the control circuit 22 of the printing apparatus 10 and the control circuit 222 of the ADF 200 through the relay board 23 . Since the relay board 23 is arranged near the control circuit 222 , the length of the FFC 255 connecting the relay board 23 and the control circuit 222 of the ADF 200 is equal to shorter than the length of the FFC 256 that

With such a configuration, when the document reading device 100 is opened with respect to the printing device 10 or closed with respect to the printing device 10 in order to replace the recording head, the ADF 200 is Only the FFC 255 that connects the control circuit 222 and the relay board 23 needs to be attached/detached, and the FFC 256 that connects the control circuit 22 and the relay board 23 of the printer 10 does not need to be attached/detached. Therefore, the FFC 255 that connects the control circuit 222 of the ADF 200 and the relay board 23 is likely to be mechanically stressed, and the FFC 255 is likely to be defective. On the other hand, the FFC 256 that connects the control circuit 22 and the relay board 23 of the printing apparatus 10 is less subject to mechanical stress, so that the FFC 256 is less likely to malfunction.

Furthermore, the length of the FFC 255 connecting the control circuit 222 of the ADF 200 and the relay board 23 is shorter than the length of the FFC 256 connecting the control circuit 22 and the relay board 23 of the printing apparatus 10 . In addition, there are fewer obstacles (other members) between the control circuit 222 of the ADF 200 and the relay board 23 than between the control circuit 22 and the relay board 23 of the printing apparatus 10 . Therefore, handling of the FFC 255 becomes easy. Therefore, the FFC 255 that connects the control circuit 222 of the ADF 200 and the relay board 23 can be replaced more easily than the FFC 256 that connects the control circuit 22 and the relay board 23 of the printer 10 .

As described above, the present embodiment has a configuration in which the relay board 23 arranged near the control circuit 222 of the ADF 200 is provided on the printing apparatus 10 side, and the FFC 255 is easily replaced. Therefore, even if the FFC 255 becomes defective due to the replacement of the print head, the FFC 255 can be replaced more easily than the FFC 256, and the stoppage loss caused by the replacement of the FFC 255 can be reduced.

Furthermore, on the rear side of the ADF 200, the control circuit 222 of the ADF 200 is arranged at an angle so as to cross the XY plane (horizontal plane). That is, the control circuit 222 is obliquely arranged. When the control circuit 222 is arranged obliquely, compared to when the control circuit 222 is arranged horizontally along the XY plane, the dimension of the control circuit 222 in the Y-axis direction (depth directional dimension) can be shortened.
In the following description, the state of intersecting with the XY plane (horizontal plane) is called oblique or tilted.

Furthermore, when the control circuit 222 is arranged obliquely, the connector 225 to which the FFC 255 is connected is also arranged obliquely.
Specifically, when the control circuit 222 is horizontally arranged, the connector 225 to which the FFC 255 is connected is also horizontally arranged. There is a need to. However, another member (for example, wiring) is arranged above the control circuit 222 , and horizontal movement of the FFC 255 may be hindered above the control circuit 222 . On the other hand, when the connector 225 to which the FFC 255 is connected is arranged obliquely, it is less likely to be affected by another member arranged above the control circuit 222, and the attachment and detachment of the FFC 255 is facilitated.

Furthermore, it is conceivable to arrange the control circuit 222 so as to be orthogonal to the XY plane (horizontal plane). However, when the control circuit 222 is arranged perpendicular to the horizontal plane, the control circuit 222 becomes susceptible to horizontal forces. For example, a horizontal force acts on the control circuit 222 , and the horizontal force deforms a member that fixes the control circuit 222 , making it easier for the control circuit 222 to deform.
Therefore, in order to improve the stability of the attitude of the control circuit 222 and the ease of attachment and detachment of the FFC 255, it is preferable to dispose the control circuit 222 obliquely.

As shown in FIGS. 7 and 8 , a fixing member 310 for fixing the hinge 110 to the scanner section 300 is attached to the rear side of the scanner section 300 . The fixing member 310 is a pillar-shaped member having a square bottom surface (not shown) when viewed from above in the Z-axis direction, and is hollow inside.
The fixing member 310 includes a side wall 311 positioned on the +X axis direction side, a side wall 312 positioned on the -X axis direction side, a rear side wall 313 positioned on the -Y axis direction side, and a side wall 313 positioned on the +Y axis direction side. a front wall 314; That is, the fixing member 310 is a hollow member surrounded by a side wall 311, a side wall 312, a wall 313 on the rear side, and a wall 314 on the front side.
Further, a notch (slit) 320, which is an example of the "engaged portion", is provided on the upper side of the side walls 311 and 312. As shown in FIG.
The wall 313 on the rear side is a rectangular member that connects the side walls 311 and 312 and is long in the X-axis direction. The wall 313 on the back side is composed of a member different from the side walls 311 and 312 and the wall 314 on the front side. Two screw holes 307 are provided in the wall 313 on the rear side. An adjustment screw 307 a , which is an example of a “pressing portion”, is screwed into the screw hole 307 . The adjusting screw 307 a presses the case 111 of the hinge 110 .

Furthermore, a wall 315 formed by bending the side wall 311 and a wall 316 formed by bending the side wall 312 are provided above the wall 313 on the rear side. Walls 315 and 316 are arranged along the X-axis direction in the same manner as wall 313 on the rear side. Walls 315 and 316 are provided with screw holes 308 respectively. A fixing screw 308 a is screwed into the screw hole 308 .

Furthermore, a slanted wall 317 formed by bending the side wall 311 and slanted obliquely is provided. The inclined wall 317 is provided so as to protrude from the side wall 311 in the +X-axis direction. Furthermore, a slit 318 c is provided between the side wall 311 and the inclined wall 317 . The inclined wall 317 is provided with a screw hole 318 into which a screw 318a can be screwed.
Similarly, an inclined wall (not shown) formed by bending the side wall 312 is formed so as to protrude from the side wall 312 in the -X-axis direction. The inclined wall has the same configuration as the inclined wall 317 and can be screwed with a screw 318a.

A fixing member 37 is attached to the housing 11 of the printing apparatus 10 . The fixing member 37 is fixed with screws to the housing 11 of the printing apparatus 10 and is replaceable. The fixing member 37 and the inclined wall 317 are fixed by screws 318a. Similarly, the fixing member 37 and the inclined wall formed by bending the side wall 312 are fixed by screws 318a.
The fixing member 37 is a member provided on the printing apparatus 10 side. The inclined wall 317 is a member provided on the document reading device 100 (scanner section 300) side. The printing device 10 and the document reading device 100 are fixed by a fixing member 37, an inclined wall 317 and a screw 318a.

As described above, the printing device 10 and the document reading device 100 are connected by the connecting member 31 so that the document reading device 100 can be opened and closed with respect to the printing device 10 . If the printing device 10 and the document reading device 100 are connected only by the connecting member 31, the fixing of the document reading device 100 to the printing device 10 becomes insufficient. Poor postural stability. Therefore, in order to secure the stability of the posture of the document reading device 100, the fixing member 37 and the inclined wall 317 (fixing member 310) are fixed by screws 318a. That is, the printing device 10 and the document reading device 100 are connected (fixed) by the fixing member 310 in addition to the connecting member 31 .
Since the slanted wall 317 is slanted and the threaded hole 318 is slanted, the screw 318a can be screwed into the threaded hole 318 for the same reasons as for the control circuit 222, compared to when the slanted wall 317 is not slanted. make it easier to

Parts replacement (recording head replacement) and repair of the printing device 10 are performed with the document reading device 100 opened with respect to the printing device 10 (state shown in FIG. 2). In order to open the document reading device 100 with respect to the printing device 10, it is necessary to remove the screw 318a that fixes the fixing member 37 and the inclined wall 317 together.
However, if the document reading device 100 is opened with respect to the printing device 10 without removing the screw 318 a that fixes the fixing member 37 and the inclined wall 317 , extra force acts on the fixing member 37 and the inclined wall 317 . .
In this embodiment, the slit 318c is provided between the side wall 311 and the inclined wall 317, and the mechanical strength of the inclined wall 317 is weakened. The extra force causes the slanted wall 317 to deform. Furthermore, the inclined wall 317 deformed by excessive force can be restored to a proper state with pliers or the like.
Furthermore, the extra force acting on the fixing member 37 and the inclined wall 317 is strong, and in addition to the deformation of the inclined wall 317, the fixing member 37 may also be deformed. Even if the fixing member 37 is deformed by excessive force, the fixing member 37 can be restored to a proper state by replacing it with a new fixing member 37 .
That is, even if the excessive force acting on the fixing member 37 and the inclined wall 317 is strong, damage to the fixing member 37 and damage to the main body (housing 11) of the printing apparatus 10 are suppressed. .

As described above, according to the present embodiment, the document reading device 100 is opened with respect to the printing device 10 without removing the screw 318a that fixes the fixing member 37 and the inclined wall 317, and the fixing member 37 of the printing device 10 malfunctions. Even if it occurs, the problem can be easily repaired by replacing it with a new fixing member 37 . Therefore, fatal damage that is difficult to repair is prevented from occurring in the printing system 1 .

As shown in FIGS. 7 and 9, the hinge 110 has a case 111, a mounting member 113, a rotating shaft 115, and a biasing member 117. As shown in FIGS. The biasing member 117 is made of an elastic member and housed in the case 111 . Although the details will be described later, the biasing member 117 is a member for maintaining the ADF 200 in the open state. The mounting member 113 is a member for fixing the ADF 200 to the hinge 110 . ADF 200 is fixed to mounting member 113 . The case 111 is arranged on the −Z-axis direction side with respect to the mounting member 113 . The mounting member 113 is rotatably connected to the case 111 via a rotating shaft 115 .
The hinge 110 is arranged on the rear side of the scanner section 300 so that the biasing direction of the biasing member 117 is the direction in which the scanner section 300 and the ADF 200 overlap (the Z-axis direction). Further, the hinge 110 is arranged on the back side of the scanner section 300 so that the rotating shaft 115 is on the upper side with respect to the biasing member 117 .
The hinge 110 connects the scanner unit 300 and the ADF 200 so that the ADF 200 can be opened and closed by rotating the ADF 200 with respect to the scanner unit 300 about the rotation shaft 115 .

Since the ADF 200 has a document transport section 205 (for example, a motor, a cam, a belt, a shaft, etc.) for transporting a document, the ADF 200 is more efficient than a case where the document transport section 205 is not provided. Weight is getting heavy. As shown in FIG. 3, in the open state, a moment F1 that tends to close the ADF 200 acts on the ADF 200 due to its own weight. On the other hand, the biasing member 117 biases the ADF 200 with a moment F2 that resists the moment F1 that causes the ADF 200 to close.
In the following description, moment F1 will be referred to as force F1, and moment F2 will be referred to as drag force F2.
In this manner, the ADF 200 is acted upon by the force F<b>1 that causes the ADF 200 to close and the drag force F<b>2 that causes the ADF 200 to open.

The biasing member 117 is made of an elastic member and is deformed by the force F1. For example, when the force F1 increases, the biasing member 117 deforms greatly, and the resistance F2 also increases. As the force F1 becomes weaker, the biasing member 117 deforms slightly and the resistance F2 also becomes weaker. By configuring the biasing member 117 with an elastic member in this manner, the resistance F2 changes in proportion to the change in the force F1.
In this embodiment, a biasing member 117 is provided so that the posture of the ADF 200 can be maintained at any position within the opening/closing range of the ADF 200 . Therefore, the force F1 for closing the ADF 200 and the drag force F2 for opening the ADF 200 are equal to each other, and the open state posture of the ADF 200 is maintained at any position in the opening/closing range of the ADF 200 .
At any position in the opening/closing range of the ADF 200, the force F1 and the drag force F2 are the same. 300 can be easily opened and closed.
In the case 111, the biasing direction of the force applied by the biasing member 117 is the direction in which the scanner unit 300 and the ADF 200 overlap (the Z-axis direction).

The case 111 of the hinge 110 is accommodated in the fixing member 310 of the scanner section 300 and fixed to the fixing member 310 by fixing screws 308a inserted into the screw holes 308 provided in the walls 315,316. That is, the case 111 of the hinge 110 and the fixing member 310 of the scanner section 300 are fixed by the fixing screw 308a. In other words, the ADF 200 and the scanner section 300 are fixed by the fixing screw 308a.
The case 111 is positioned below the rotation shaft 115 and has a surface 111a that intersects the axial direction (X-axis direction) of the rotation shaft 115 . The surface 111a is arranged on the +X-axis direction side. Furthermore, a surface (not shown) facing the surface 111a is arranged on the -X axis direction side. A convex portion 121, which is an example of an “engaging portion”, is provided on each of the surface 111a and a surface arranged to face the surface 111a. The protrusion 121 is formed by bending a part of the case 111 and protrudes outside the case 111 . Furthermore, the convex portion 121 is engaged with the slits 320 provided in the side walls 311 and 312 of the fixing member 310 , and the tip of the convex portion 121 protrudes outside the fixing member 310 .
Thus, the convex portion 121 is formed on the case 111 that accommodates the biasing member 117 .

FIG. 10 is a schematic plan view showing a state in which the protrusion and the slit are engaged. 10 is a schematic plan view of the surface 111a of the case 111 viewed from the X-axis direction.
In FIG. 3, the force F1 that tries to close the ADF 200 can be decomposed into a component force F1A in the +Y-axis direction and a component force in the −Z-axis direction. In FIG. 10, the force component F1A is indicated by a solid arrow.

As shown in FIG. 10, the slits 320 include an upper convex portion 320a provided on the upper side of the side wall 311 and positioned on the +Y-axis direction side, and a lower convex portion 320a provided on the lower side of the side wall 311 and positioned on the -Y-axis direction side. and a portion 320b.
In plan view in the X-axis direction, the convex portion 121 of the case 111 is arranged inside the slit 320 of the fixing member 310 and between the upper convex portion 320a and the lower convex portion 320b. When force F1 acts on ADF 200, force component F1A acts on hinge 110 (convex portion 121) to which ADF 200 is fixed.
The component force F1A (force in the +Y-axis direction) acts on the +Z-axis direction side (upper side) of the convex portion 121 . When the convex portion 121 acts on the +Z axis direction side, the convex portion 121 tries to rotate about the fulcrum where the convex portion 121 and the upper convex portion 320a are in contact with each other. force) acts on the -Z-axis direction side (lower side) of the convex portion 121 .
The upper convex portion 320a suppresses the +Z-axis direction movement of the convex portion 121 so that the +Z-axis direction side of the convex portion 121 is not moved by the force component F1A (+Y-axis direction force). The lower convex portion 320b prevents the convex portion 121 from moving in the −Z-axis direction so that the −Z-axis direction side of the convex portion 121 does not move due to the force in the direction opposite to the component force F1A (the force in the −Y-axis direction). Suppress.
Thus, when the force F1 acts on the hinge 110, the upper convex portion 320a and the lower convex portion 320b are affected by the force component F1A so that the position of the convex portion 121 (hinge 110) does not change due to the force component F1A. to regulate

Although the details will be described later, when the document reading device 100 is manufactured, or when the document reading device 100 is maintained or repaired, the work of assembling the ADF 200 to the scanner unit 300, removing the ADF 200 from the scanner unit 300, and attaching the ADF 200 to the scanner again is performed. A work of assembling to the part 300 occurs. In such an operation of assembling the ADF 200 to the scanner unit 300 , the weight of the ADF 200 acts on the ADF 200 and the force component F 1 A acts on the hinge 110 .
When the ADF 200 is assembled to the scanner section 300 in a state in which the convex portion 121 of the hinge 110 and the slit 320 of the fixing member 310 are engaged, the upper convex portion 320a and the lower convex portion 320b are moved to the hinge 110 by the force component F1A. Since it works so that the position does not change, the influence of the component force F1A acting on the hinge 110 (the influence of the force F1 acting on the ADF 200) is suppressed, and the ADF 200 can be properly assembled to the scanner section 300 easily. .

Suppose that a force F3 indicated by a dashed arrow in the figure acts on the +Z-axis direction side of the convex portion 121, that is, a case in which the −Y-axis direction force F3 acts on the +Z-axis direction side of the convex portion 121. , the convex portion 121 moves away from the upper convex portion 320a while being in contact with the lower convex portion 320b, as indicated by the two-dot chain line in the figure. That is, the contact point between the convex portion 121 and the lower convex portion 320b serves as a fulcrum, the -Z-axis direction side of the convex portion 121 moves in the +Y-axis direction, and the +Z-axis direction side of the convex portion 121 moves in the -Y-axis direction. do.
In this way, when the protrusion 121 of the hinge 110 and the slit 320 of the fixing member 310 are engaged with each other, when the −Y-axis direction force F3 acts on the +Z-axis side of the protrusion 121, the protrusion 121 and the slit 320 of the fixing member 310 are engaged. The portion in contact with the lower convex portion 320b serves as a fulcrum, and the convex portion 121 rotates counterclockwise.

When manufacturing the document reading device 100, the ADF 200 and the scanner section 300 are separately assembled. Subsequently, the hinge 110 is attached to the ADF 200 and the fixing member 310 is attached to the scanner section 300 . After that, the hinge 110 attached to the ADF 200 is fitted into the fixing member 310 attached to the scanner section 300 , and the protrusion 121 of the hinge 110 is engaged with the slit 320 of the fixing member 310 . ADF 200 is attached to scanner section 300 in a state in which movement of hinge 110 in the +Y-axis direction is suppressed even when force F1 acts due to the weight of ADF 200 itself.

Subsequently, adjusting screws 307a are screwed into the two screw holes 307 provided in the wall 313 on the rear side. Since the adjustment screw 307a (screw hole 307) is arranged on the -Z-axis direction side of the protrusion 121 and the slit 320, the tip of the adjustment screw 307a presses the -Z-axis direction side of the case 111 of the hinge 110. . In other words, the convex portion 121 is formed on the case 111 that houses the biasing member 117, and the adjustment screw 307a presses the -Z axis direction side of the hinge 110 (case 111) from the rear side of the scanner section 300. FIG. Then, a force in the +Y-axis direction acts on the -Z-axis direction side of the case 111 .
When the protrusion 121 and the slit 320 are engaged with each other, the contact point between the protrusion 121 and the lower protrusion 320b serves as a fulcrum, and the protrusion 121 can rotate counterclockwise. When a force in the +Y-axis direction acts on the -Z-axis direction side of the hinge 110, the contact point between the convex portion 121 and the lower convex portion 320b becomes a fulcrum, and the convex portion 121 rotates counterclockwise. The position in the Y-axis direction changes on the axial side.
Therefore, by screwing the adjusting screw 307a into the screw hole 307, the position of the hinge 110 (ADF 200) in the -Z-axis direction in the Y-axis direction can be adjusted (finely adjusted). That is, the ADF 200 can be properly positioned with respect to the scanner section 300 .

Then, the position of the Y-axis direction on the -Z-axis direction side of the hinge 110 is adjusted to the target position, and after the ADF 200 is properly positioned with respect to the scanner unit 300, the screw holes 308 provided in the walls 315 and 316 are screwed. The fixing screw 308a is screwed to fix the ADF 200 and the scanner section 300 together.
Thus, when manufacturing the document reader 100, the hinge 110 attached to the ADF 200 is fitted into the fixing member 310 of the scanner section 300, and the scanner section 300 is attached to the scanner section 300 by the projection 121, the slit 320, and the adjustment screw 307a. After adjusting the position of the ADF 200 in the Y-axis direction, the ADF 200 and the scanner section 300 are fixed with the fixing screw 308a, whereby the ADF 200 can be assembled to the scanner section 300 with high accuracy.

As described above, the "positioning mechanism" in the present application is located below the rotation shaft 115 and faces the surface 111a intersecting the rotation shaft 115 of the hinge 110 in the axial direction (X-axis direction) and the surface 111a. a convex portion 121 (engaging portion) formed on a surface that faces the scanner portion 300, a slit 320 (engaged portion) formed in the scanner portion 300 that engages with the convex portion 121, and a position below the positions of the convex portion 121 and the slit 320. and an adjusting screw 307 a that presses the hinge 110 from the rear side of the scanner section 300 . The positioning mechanism described above adjusts the position of the scanner section 300 and the hinge 110 (ADF 200) in the Y-axis direction by the engagement between the protrusion 121 and the slit 320 and the adjustment screw 307a.
In this embodiment, a plurality (two) of hinges 110 are arranged. The positioning mechanism described above can be used to align the scanner unit 300 and each hinge 110 in the Y-axis direction. As a result, the ADF 200 can be assembled to the scanner section 300 with high accuracy.

11 and 12 are schematic diagrams showing the state of recesses provided in the exterior member of the scanner section.
In addition to the positioning mechanism described above, this embodiment has a configuration that allows the position of the ADF 200 with respect to the scanner section 300 to be adjusted in the work of assembling the ADF 200 to the scanner section 300. Therefore, FIGS. for details.
As shown in FIG. 3, the exterior member 380 of the scanner section 300 is provided with a recess 331 and a recess 332, which is an example of a "third recess." The concave portion 331 is provided at the end of the exterior member 380 of the scanner section 300 on the −Y axis direction side, and positioned on the −Y axis direction side with respect to the platen glass 374 . The concave portion 332 is provided at the +X-axis direction end of the exterior member 380 of the ADF 200 on the +Y-axis direction side, and is positioned on the +X-axis direction side with respect to the platen glass 374 .
A recessed portion 341 and a recessed portion 342, which is an example of a “second recessed portion”, are provided on the surface of the ADF 200 facing the exterior member 380 (scanner section 300). That is, concave portions 341 and 342 are formed at least on the free end side (+Y-axis direction side) of the hinge 110 of the ADF 200 with respect to the rotation shaft 115 . The concave portions 341 and 342 are through holes provided in the housing of the ADF 200 . In a plan view viewed from the Z-axis direction in the closed state, the recesses 331 and 341 overlap each other, and the recesses 332 and 342 overlap each other. In other words, the recess 341 is formed to planarly overlap the recess 331 and the recess 342 is formed to planarly overlap the recess 332 in plan view in the Z-axis direction in the closed state.

A pin 330, which is an example of a "protrusion", is arranged on the ADF 200 (see FIGS. 13 and 14). 11, the pin 330 is arranged between the convex portion 330a projecting in the +Z-axis direction, the convex portion 330c projecting in the −Z-axis direction, and the convex portion 330a and the convex portion 330c. and a flat portion 330b. In a plan view in the direction from the convex portion 330a to the convex portion 330c, the convex portions 330a and 330c and the flat portion 330b are circular, and the outer diameter (diameter) of the flat portion 330b is larger than the outer diameter of the convex portions 330a and 330c. is also getting bigger. Furthermore, the convex portions 330a and 330c have the same shape, and the pin 330 has a configuration in which convex portions (convex portions 330a and 330c) having the same shape are arranged opposite to each other with the flat portion 330b interposed therebetween. .
As shown in FIG. 11, the center of the recess 331 is provided with a hole (through hole) 331a into which one of the protrusions 330a and 330c can be fitted. Then, one of the protrusions 330 a and 330 c can be fitted into the hole 331 a of the recess 331 . That is, it is possible to fit the convex portion 330 a into the concave portion 331 , or it is possible to fit the convex portion 330 c into the concave portion 331 .

Furthermore, either of the protrusions 330 a and 330 c can be fitted into the recess 332 in the same manner as the recess 331 . In addition, like the recess 331, one of the protrusions 330a and 330c can be fitted into the two recesses 341 and 342 provided on the surface facing the exterior member 380 of the ADF 200. FIG.

The pin 330 can be attached to and detached from the concave portions 331 and 332 .
In the following description, the state in which the pin 330 is attached to the recesses 331 and 332 is referred to as the attached state, and the state in which the pin 330 is removed from the recesses 331 and 332 is referred to as the disengaged state.
For example, when the protrusion 330 a is fitted into the recess 331 , the protrusion 330 c protrudes from the exterior member 380 and a new protrusion (projection 330 c ) can be formed on the exterior member 380 . That is, when the pin 330 is attached to the concave portion 331, a new convex portion (convex portion 330c) is formed on the exterior member 380. As shown in FIG. When a new protrusion (projection 330 c ) is formed on the exterior member 380 and then closed, the new protrusion (projection 330 c ) can be fitted into the recess 341 of the ADF 200 . In other words, when the new protrusion (protrusion 330 c ) is formed on the exterior member 380 and then closed, the new protrusion (protrusion 330 c ) can be engaged with the recess 341 .
Similarly, when the protrusion 330 a is fitted into the recess 332 , the protrusion 330 c protrudes from the exterior member 380 and a new protrusion (projection 330 c ) can be formed on the exterior member 380 . When the exterior member 380 is closed with a new projection (projection 330 c ) formed thereon, the new projection (projection 330 c ) can be fitted into the recess 342 of the ADF 200 . In other words, when the new projection (projection 330 c ) is formed on the exterior member 380 and then closed, the new projection (projection 330 c ) can be engaged with the recess 342 .

In document reading apparatus 100, recesses 331, 332 overlap recesses 341, 342 in the closed state. The state in which the concave portions 341 and 342 are engaged is a state in which the concave portions 331 and 332 and the concave portions 341 and 342 are appropriately overlapped in a plane, and the ADF 200 is properly aligned with the scanner portion 300 . is.
Therefore, when the relative positions of the ADF 200 and the scanner unit 300 are adjusted so that the new convex portion (the convex portion 330c) formed on the exterior member 380 and the concave portions 341 and 342 are engaged with each other in the mounted state, the scanner portion The position of ADF 200 relative to 300 can be adjusted appropriately. In other words, in this embodiment, the pins 330 are detachable from the concave portions 331 and 332 formed in the scanner section 300, and in the mounted state, new convex portions (convex portions 330c) formed in the exterior member 380 are attached. and the concave portions 341 and 342 of the ADF 200 are fitted, the scanner unit 300 and the ADF 200 are aligned.
Furthermore, in the closed state when the position of the ADF 200 in the Y-axis direction is adjusted by the positioning mechanism described above, the new protrusion (protrusion 330c) formed on the exterior member 380 engages with the recesses 341 and 342 of the ADF 200. Then, it can be confirmed that the adjustment by the positioning mechanism is proper.

In the work of assembling the ADF 200 to the scanner unit 300 when manufacturing the document reading device 100 or performing maintenance or repair of the document reading device 100, first, the concave portions 341 and 342, the pin 330, and the concave portions 331 and 332 are used. By adjusting the relative positions of the scanner unit 300 and the ADF 200 and then adjusting the position of the ADF 200 with respect to the scanner unit 300 by the positioning mechanism described above, the ADF 200 can be assembled to the scanner unit 300 efficiently and with high accuracy.

Furthermore, in the work of assembling the ADF 200 to the scanner section 300, the position of the ADF 200 with respect to the scanner section 300 is first adjusted by the positioning mechanism described above, and then the recesses 341 and 342, the pin 330 and the recesses 331 and 332 are used to After confirming whether the position of the ADF 200 with respect to the scanner section 300 is appropriate, the positioning mechanism (convex section 121, slit 320, adjusting screw 307a) is fixed with the fixing screw 308a, so that the ADF 200 can be assembled to the scanner section 300 with high accuracy. can.
That is, the ADF 200 has concave portions 341 and 342 formed at least on the free end side of the scanner portion 300 and a pin 330 arranged in the scanner portion 300 , and the concave portions 341 and 342 and the convex portion (attachment portion) of the scanner portion 300 are provided. It is preferable to fix the positioning mechanism (the convex portion 121, the slit 320, the adjustment screw 307a) in a state in which the scanner unit 300 and the ADF 200 are aligned by engaging the convex portion formed by setting the .

In the present embodiment, when manufacturing the document reading device 100 or performing maintenance or repair of the document reading device 100 , the pins 330 are fitted into the recesses 331 and 332 and new protrusions are formed on the exterior member 380 . to properly align the scanner portion 300 and the ADF 200 or to confirm that the scanner portion 300 and the ADF 200 are properly aligned.
However, in a normal operation (normal use) such as when the printing apparatus 10 prints an image on a sheet of paper or when the document reading apparatus 100 reads an image of a document, the pins 330 are fitted into the recesses 331 and 332 so that the exterior No new projections formed on member 380 are required. Furthermore, if the exterior member 380 has an unnecessary convex portion, the unnecessary convex portion may cause a problem such as bending of the edge of the paper or the document.
Therefore, in this embodiment, the pin 330 is accommodated in the ADF 200 during regular work (normal use), and the pin 330 can be taken out from the ADF 200 during non-regular work. Therefore, in the present embodiment, unnecessary protrusions are not formed by the pins 330 during regular work, and problems caused by the unnecessary protrusions do not occur. Furthermore, during regular work, the concave portion 332 is capped with a cap (not shown) to prevent foreign matter from entering the concave portion 332 .
Note that the concave portions 331, 341, and 342 may also be capped with caps in the same manner as the concave portion 332 during regular work.

As shown in FIG. 12, the concave portion 332 supports a hole 332a, which is an example of a “second through hole” through which a screw 340 can be passed, and a flat portion 330b of the pin 330. A possible support 332b is provided. The hole 332a is provided in the center of the recess 332, and the support portion 332b is provided so as to surround the hole 332a.
With this configuration, the screw 340 can be passed through the recess 332, and the pin 330 can be fitted into the recess 332 while the flat portion 330b is supported by the support portion 332b. When the pin 330 is fitted into the recess 332 , one of the projections 330 a and 330 c protrudes from the recess 332 to form a new projection on the exterior member 380 .
With such a configuration, the ADF 200 and the scanner section 300 can be fixed so that the ADF 200 is not opened or closed with respect to the scanner section 300 by passing the screw 340 through the recess 332 and the recess 342 in the closed state. Further, the ADF 200 can be returned to a state in which it can be opened and closed with respect to the scanner section 300 by removing the screw 340 penetrating the recess 332 and the recess 342 .

The operation of replacing the recording head is performed with the document reading device 100 opened with respect to the printing device 10 (the state shown in FIG. 2). When the document reading device 100 is opened with respect to the printing device 10 , a force to open the ADF 200 from the scanner section 300 is applied from the hinge 110 to the ADF 200 .
Therefore, when the document reading device 100 is opened from the printing device 10 to replace the recording head, the ADF 200 moves faster than the scanner unit 300 due to the force applied from the hinge 110 , and the ADF 200 moves relative to the scanner unit 300 . may open abruptly. Furthermore, when the ADF 200 tries to deviate from the predetermined opening/closing range, a force is applied to suppress the rapid movement of the ADF 200, and a strong impact is applied to the ADF 200, which may cause mechanical damage to the ADF 200. .

Therefore, in the present embodiment, when replacing the recording head, the screw 340 is passed through the concave portion 332 and the concave portion 342 to fix the ADF 200 and the scanner portion 300, and then the document reading device 100 is attached to the printing device 10. This prevents the sudden movement of the ADF 200 (strong impact on the ADF 200) described above.
When the recording head is replaced and the document reader 100 is closed with respect to the printer 10 , the screw 340 passed through the recesses 332 and 342 is removed, and the ADF 200 can be opened and closed with respect to the scanner unit 300 . is reverting to
Furthermore, even in non-regular work other than part replacement, such as maintenance or repair of the printing apparatus 10, the screws 340 are passed through the recesses 332 and 342 to fix the ADF 200 and the scanner unit 300, and then the printing apparatus 10 is installed. On the other hand, when the document reading device 100 is opened and the maintenance or repair of the printing device 10 is completed, the screw 340 passed through the concave portion 332 and the concave portion 342 is removed, and the ADF 200 is returned to a state in which it can be opened and closed with respect to the scanner portion 300. there is
In other words, the scanner section 300 can be opened with respect to the lower structure (printing apparatus 10) of the scanner section 300 with the rotation axis below the rotation axis 115 of the hinge 110, and the concave portions 341 and 342 are through holes. The concave portion 332 to which the pin 330 is attached and detached has a hole 332a that communicates with the inside of the scanner portion 300 when the pin 330 is removed. The ADF 200 and the scanner section 300 can be fastened with screws 340 . With such a configuration, when the scanner unit 300 is opened with respect to the printing apparatus 10 with the rotation axis below the rotation axis 115 of the hinge 110, the above-described rapid movement of the ADF 200 (strong impact on the ADF 200) is suppressed.
The configuration is not limited to fixing the ADF 200 and the scanner unit 300 by passing the screw 340 through the concave portion 332 and the concave portion 342 . 340 may be penetrated to fix the ADF 200 and the scanner unit 300 .

FIG. 13 is a perspective view showing a state in which pins and screws are stored. FIG. 14 is an enlarged view of the portion where the pin is housed.
Screw 340, like pin 330, is used in non-routine operations and not in routine operations. Therefore, in this embodiment, the pin 330 and the screw 340 are housed in the ADF 200 during normal work, and can be taken out from the ADF 200 during non-steady work.
Specifically, as shown in FIGS. 13 and 14 , a side cover 231 provided on the side of the ADF 200 can be opened and closed, and the inside of the ADF 200 can be exposed by opening the side cover 231 . With the side cover 231 opened and the inside of the ADF 200 exposed, the two pins 330 are housed in the portion 233 and the screw 340 is housed in the portion 234 .
Specifically, two pins 330 can be inserted into the portion 233 , and a screw 335 can be screwed between the two pins 330 . After the two pins 330 are inserted into the portion 233 , the screws 335 are screwed together, and the screws 335 press the two pins 330 to fix the two pins 330 to the portion 233 .
A screw 340 can be screwed into the portion 234 , and the screw 340 is screwed into the portion 234 to fix the screw 340 to the portion 234 .
Further, the parts 233 and 234 are arranged at the end of the ADF 200 on the +X-axis direction so that the screw 340 and the pin 330 are positioned close to each other.

Since the pin 330 and the screw 340 are housed inside the ADF 200, it is unlikely that the pin 330 and the screw 340 will be lost during routine work.
Furthermore, since the pin 330 and the screw 340 are arranged close to each other, it becomes easier to take out the pin 330 and the screw 340 during unsteady work compared to the case where the pin 330 and the screw 340 are arranged far from each other. Furthermore, the states of the pins 330 and screws 340 can be easily grasped. For example, if an abnormality occurs in which either the pin 330 or the screw 340 is lost, the abnormality can be quickly detected.

15 is a schematic cross-sectional view of the ADF between DD in FIG. 4. FIG. 16 is a schematic cross-sectional view of a region E surrounded by a two-dot chain line in FIG. 15. FIG. 17 is a schematic cross-sectional view of a region F surrounded by a two-dot chain line in FIG. 15. FIG. 18 is a schematic cross-sectional view of a region G surrounded by a two-dot chain line in FIG. 15. FIG.
In FIGS. 15 to 18, constituent elements necessary for explanation are illustrated, and illustration of constituent elements unnecessary for explanation is omitted.

As shown in FIGS. 15 and 16, the ADF 200 has a resin member 350 and a sheet metal member 360 arranged in order from the hinge 110 side. The resin member 350 is a member that serves as a base of the ADF 200, and is arranged over substantially the entire area of the ADF on a plane viewed from the Z-axis direction. The sheet metal member 360 is a member provided to enhance the mechanical strength of the resin member 350 . By providing the sheet metal member 360, the resin member 350 can be arranged along the XY plane (horizontal plane). A document mat 203 is attached to the side of the resin member 350 facing the scanner unit 300 (see FIG. 3).
Further, the sheet metal member 360 is composed of a first member 361 arranged on the +Z axis direction side and a second member 362 arranged on the −Z axis direction side. The first member 361 is arranged over substantially the entire area of the ADF on a plane viewed from the Z-axis direction. Second member 362 is positioned near hinge 110 .

In a plan view in the Z-axis direction, the first member 361 and the second member 362 are arranged in the area where the hinge 110 is arranged, and compared with the area other than the area where the hinge 110 is arranged, Mechanical strength is further enhanced.
In the following description, the area where the hinge 110 is arranged in plan view in the Z-axis direction is referred to as the area where the hinge 110 is arranged.
As shown in FIGS. 16 to 18, a resin member 350, a second member 362, and a first member 361 are formed in the area where the hinge 110 is arranged and the area near the area where the hinge 110 is arranged. They are arranged in order in the +Z-axis direction. Further, two screws 365 and 366 are provided for fastening the resin member 350, the second member 362, and the first member 361 by screw action. The screw 365 is arranged on the -Y-axis direction side (the end of the ADF 200 on the -Y-axis direction side) compared to the screw 366 .
A resin member 350 and a first member 361 are arranged in order in the +Z-axis direction in a region away from the region where the hinge 110 is arranged. Furthermore, two screws 367 and 368 are provided to fasten the resin member 350 and the first member 361 by screw action. The screw 367 is arranged near the center of the ADF 200 in the Y-axis direction, and the screw 368 is arranged at the end of the ADF 200 on the +Y-axis direction.
In this manner, in the ADF 200, the screws 365, 366, 367, and 368 are arranged in order from the end on the -Y-axis direction to the end on the +Y-axis direction.

The resin member 350 has a screw hole 355 into which a screw 365 can be screwed, a screw hole 356 into which a screw 366 can be screwed, a screw hole 357 into which a screw 367 can be screwed, and a screw 368 . A threaded hole 358 is provided into which the . Further, the first member 361 is provided with through holes through which the screws 365, 366, 367, 368 can pass.
Near the center of the ADF 200, a screw 367 is screwed into the screw hole 357 of the resin member 350, and the sheet metal member 360 (first member 361) is tightened with the screw 367 and the resin member 350 (see FIG. 17). Similarly, at the end of the ADF 200 on the +Y-axis direction, a screw 368 is screwed into the screw hole 358 of the resin member 350 , and the sheet metal member 360 (first member 361 ) is tightened with the screw 368 and the resin member 350 . (See FIG. 18).

On the other hand, screws 365 and 366 are screwed into screw holes 355 and 356 of the resin member 350 at the end of the ADF 200 on the -Y axis side. However, the sheet metal member 360 (the first member 361 and the second member 362) is not fastened to the resin member 350 with the screws 365,366. That is, gaps 365 a and 366 a are provided between the sheet metal member 360 and the screws 365 and 366 .
Specifically, in the region where the hinge 110 is arranged, the surface of the screw hole 355 that contacts the screw 365 is located on the higher side (+Z-axis direction side) than the sheet metal member 360 (first member 361), and the screw 365 is A gap 365 a is formed between the sheet metal member 360 and the screw 365 when screwed into the screw hole 355 of the resin member 350 . Furthermore, in the area near the area where the hinge 110 is arranged, the surface of the screw hole 356 in contact with the screw 366 is located on the higher side (+Z-axis direction side) than the sheet metal member 360 (first member 361), A gap 366 a is formed between the sheet metal member 360 and the screw 366 when the screw 366 is screwed into the screw hole 356 of the resin member 350 .

As described above, the hinge 110 provides the ADF 200 with a force (a drag force F2 that causes the ADF 200 to open with respect to the scanner unit 300) that resists the force F1 that causes the ADF 200 to close with respect to the scanner unit 300 due to its own weight. act against. At the portion where the ADF 200 is fixed to the hinge 110 , the drag force F2 that causes the ADF 200 to open with respect to the scanner unit 300 becomes a force (+Z-axis direction force) that causes the hinge 110 to lift the ADF 200 .
In this way, a force is applied to the area where the hinge 110 is arranged so that the hinge 110 lifts the ADF 200 .

If sheet metal member 360 is fastened to resin member 350 with screws 365 and 366 in the area where hinge 110 is arranged, sheet metal member 360 is deformed by the force of hinge 110 trying to lift ADF 200 . A problem occurs. For example, the sheet metal member 360 deforms in a wavy manner due to the force of the hinge 110 trying to lift the ADF 200 . Furthermore, the sheet metal member 360 also deforms in a region near the region where the hinge 110 is arranged.
Then, the resin member 350 deforms so as to follow the shape of the sheet metal member 360 , and the document mat 203 attached to the side of the resin member 350 facing the scanner section 300 also deforms, and the ADF 200 closes to the scanner section 300 . If this occurs, the document placed on document platen glass 375 is not evenly pressed by document mat 203, the reading surface of the document does not come into uniform contact with document platen glass 375, and scanner unit 300 evenly spreads the document. A problem arises in that it becomes difficult to read the image.

For this reason, in the present embodiment, measures are taken to suppress the problem that the sheet metal member 360 is deformed by the force of the hinge 110 trying to lift the ADF 200 .
Specifically, when the screw 365 is screwed into the screw hole 355 of the resin member 350 in the area where the hinge 110 is arranged, a gap 365a is formed between the sheet metal member 360 and the screw 365, and the hinge 110 is A force that tries to lift the ADF 200 does not affect the sheet metal member 360 . Furthermore, when the screw 366 is screwed into the screw hole 356 of the resin member 350 in the area near the area where the hinge 110 is arranged, a gap 366a is formed between the sheet metal member 360 and the screw 366. The force with which the hinge 110 tries to lift the ADF 200 does not affect the sheet metal member 360 .
With such a configuration, deformation of the sheet metal member 360, the resin member 350, and the document mat 203 makes it difficult for the scanner unit 300 to read the image of the document uniformly.

FIG. 19 corresponds to FIG. 17 and is a schematic cross-sectional view of a document reading device according to a modification. In the region F of the document reading device 100 according to the modified example, a concave portion 352 is provided in the resin member 350 and a spring 354 is provided in the concave portion 352 . This point is the difference between FIG. 19 and FIG.
As shown in FIG. 19, in the resin member 350 near the center of the ADF 200, a recess 352 is provided near where the screw 367 is screwed. , and a projection 353 to which an elastic member (spring 354) can be attached. Furthermore, an elastic member (spring 354 ) is attached to the protrusion 353 so that the elastic member (spring 354 ) can apply a force in the +Z-axis direction to the sheet metal member 360 .
With such a configuration, deformation of the sheet metal member 360 can be reliably suppressed.

FIG. 20 is a perspective view showing the state of the front cover. FIG. 21 is a schematic cross-sectional view showing a fixed state between the front cover and the main body of the ADF.
As shown in FIGS. 20 and 21, the front cover 201 is provided with a protrusion 241 projecting in the −Y axis direction and a rib 245 projecting in the −Y axis direction. Furthermore, the convex portion 241 is provided with a screw hole 242 and the rib 245 is provided with an uneven portion 246 . Three protrusions 241 are provided along the X-axis direction at the end of the front cover on the −Z-axis direction side. The ribs 245 are arranged on the +Z-axis direction side with respect to the convex portion 241, and are provided three along the X-axis direction.
The front side cover 201 is a member elongated in the X-axis direction, and has a portion with a larger Z-axis dimension on the −X-axis direction side and a smaller Z-axis direction dimension on the +X-axis direction side. part. The rib 245 is provided at a portion of the front cover 201 where the dimension in the Z-axis direction is reduced.

The convex portion 241 is fixed to the main body portion 200A of the ADF 200 with screws (not shown).
Further, the body portion 200A is provided with a convex portion 211 that can be fitted into the uneven portion 246 of the rib 245 and a convex portion 212 that supports the opposite side of the uneven portion 246 of the rib 245 . Then, the front side cover 201 is attached to the main body portion 200A so that the rib 245 is arranged between the protrusions 211 and 212 . Then, the uneven portion 246 of the rib 245 is positioned and fixed by the convex portion 211 . Further, the side of the rib 245 opposite to the uneven portion 246 is supported by the convex portion 212 .
Thus, in this embodiment, the front cover 201 is fixed to the main body portion 200A of the ADF 200 by both the protrusions 241 and the ribs 245 .

Since the front cover 201 is a member elongated in the X-axis direction, it is easily deformed (easily twisted) by an external force. For example, if the convex portion 241 and the main body portion 200A are only fixed with screws, the front cover 201 is easily deformed (easily twisted) when an external force acts on the front cover 201 .
In this embodiment, since the front cover 201 is fixed to the main body 200A of the ADF 200 by both the protrusions 241 and the ribs 245, the front cover 201 is fixed to the main body 200A of the ADF 200 only by the protrusions 241. , the mechanical strength of the front cover 201 is increased when the front cover 201 is fixed to the main body 200A, and the front cover 201 is deformed when an external force acts on the front cover 201. become difficult.
In addition, in the front cover 201, the portion with the smaller dimension in the Z-axis direction has lower mechanical strength than the portion with the larger dimension in the Z-axis direction. The mechanical strength of the portion of the front cover 201 having a smaller Z-axis direction is increased by providing it at the portion having the smaller axial size.

That is, by providing the front cover 201 with the projections 241 and the ribs 245 and fixing the front cover 201 to the main body 200A of the ADF 200 with both the projections 241 and the ribs 245, the front cover 201 can be mounted on the front side only with the projections 241. Compared to the case where the cover 201 is fixed to the main body portion 200A of the ADF 200, deformation (twisting) of the front cover 201 when an external force acts on the front cover 201 is suppressed, and the rigidity of the front cover 201 is improved. can increase

FIG. 22 is an exploded perspective view of an exterior member of the scanner section. FIG. 23 is an exploded perspective view of the sheet metal member. FIG. 24 is a perspective view of an exterior member. FIG. 25 is a schematic diagram showing the state of the first fixing portion. FIG. 26 is a schematic diagram showing the state of the fourth fixing portion. FIG. 27 is a schematic diagram showing the state of the fifth fixing portion.
Note that FIG. 25 is a schematic plan view of the portion where the first fixing portion 391 is formed as viewed from the Y-axis direction. FIG. 26 is a partial perspective view in which the fourth fixing portion 394 is formed. FIG. 27 is a schematic cross-sectional view of the exterior member 380 cut near the portion where the fifth fixing portion 395 is formed.

As shown in FIG. 22 , the exterior member 380 is composed of an upper resin member 381 , a sheet metal member 382 and a lower resin member 383 . That is, the exterior member 380 is formed by laminating the lower resin member 383, the sheet metal member 382, and the upper resin member 381 in order in the +Z-axis direction.
An opening 371 a is formed on the +X-axis direction side of the upper resin member 381 , and the opening 371 a of the upper resin member 381 becomes the opening 371 (see FIG. 3 ) of the exterior member 380 . An opening 372a is formed on the −X axis side of the upper resin member 381, and the opening 372a of the upper resin member 381 becomes the opening 372 of the exterior member 380 (see FIG. 3).

As shown in FIG. 23, the sheet metal member 382 is composed of four sheet metal members 382a, 382b, 382c and 382d. The four sheet metal members 382a, 382b, 382c, and 382d are members each having a U-shaped cross section. By using a member having a U-shaped cross section, it is possible to increase the mechanical strength while achieving compactness compared to, for example, a flat plate shape. Thus, the sheet metal member 382 is formed by assembling the sheet metal members 382a, 382b, 382c, and 382d, has a U-shaped cross section, and has mechanical strength while achieving compactness. is raised.

The sheet metal members 382a and 382b are arranged at the ends of the sheet metal member 382 on the +X axis direction side and on the -Y axis direction side of the sheet metal member 382, respectively. The sheet metal members 382c and 382d are arranged at the ends of the sheet metal member 382 on the −X axis direction side and the +Y axis direction side of the sheet metal member 382, respectively. Further, the sheet metal members 382c and 382d are arranged at the lower and right corner portions (see FIG. 3) of the document reading device 100 which is in a state of being lifted from the printing device 10 by the space for providing the discharge section 14. FIG.
The side of document reading device 100 (scanner section 300), which is in a floating state due to the space for providing discharge section 14, does not have a portion (housing 11 of printing device 10) that supports document reading device 100, so it is deformed by an external force. It's easy to do. If the document reading device 100 were to be deformed by an external force, there would be a problem that the ADF 200 would not feed the document properly, or that the scanner unit 300 would not properly read the image of the document.
In the present embodiment, the side of the scanner section 300 that is in a floating state due to the space for providing the discharge section 14 has increased mechanical strength by the sheet metal member 382, so that the document reading device 100 is less likely to be deformed by an external force. , the problem that the document is not properly conveyed in the ADF 200 and the problem that the image of the document is not properly read in the scanner unit 300 are suppressed.

As shown in FIG. 24, the exterior member 380 is provided with five types of fixing portions 391, 392, 393, 394, and 395. As shown in FIG. The first fixing portion 391 positions and fixes the upper resin member 381 and the sheet metal member 382 . The second fixing portion 392 positions and fixes the sheet metal member 382 and the lower resin member 383 . The third fixing portion 393 positions and fixes the upper resin member 381 and the sheet metal member 382 . The fourth fixing portion 394 positions and fixes the sheet metal member 382 and the lower resin member 383 . The fifth fixing portion 395 positions and fixes the upper resin member 381 and the lower resin member 383 .

Ten first fixing portions 391 and ten second fixing portions 392 are provided at each end of the frame-shaped exterior member 380 . The third fixing portion 393 is provided at one location at the end of the frame-shaped exterior member 380 on the +Y axis direction side. The fourth fixing portion 394 is provided at two locations at the end of the frame-shaped exterior member 380 on the -Y axis direction side. One fifth fixing portion 395 is provided at each of the +X-axis direction end and the −X-axis direction end of the frame-shaped exterior member 380 .
Note that the number of the five types of fixing portions 391, 392, 393, 394, and 395 is not limited to the content described above and is arbitrary. The positions of the five types of fixing portions 391, 392, 393, 394, and 395 are also not limited to the contents described above, and are arbitrary.

The opening 371 a of the upper resin member 381 forms the opening 371 of the exterior member 380 , and the opening 372 a of the upper resin member 381 forms the opening 372 of the exterior member 380 .
As described above, the document is placed in contact with the edge of the opening 372 (that is, the edge of the opening 372a), and the placement position of the document is determined by the opening 372 of the exterior member 380 (that is, the opening 372a of the upper resin member 381). It is determined. That is, the opening 372a of the upper resin member 381 serves as a reference for determining the placement position of the document.
The lower resin member 383 is arranged on the -Z-axis direction side with respect to the platen glasses 374 and 375 . Further, the lower resin member 383 incorporates a moving mechanism (not shown) for moving the image reading unit. The image reading unit moves along the longitudinal direction (X-axis direction) of the lower resin member 383 . That is, the lower resin member 383 serves as a reference for determining the moving direction of the image reading unit.

When reading an image of a document without using the ADF 200, the opening 372a of the upper resin member 381 serves as a reference for determining the placement position of the document, and the lower resin member 383 serves as a reference for determining the moving direction of the image reading unit. Therefore, if any of the opening 372a of the upper resin member 381 and the lower resin member 383 is misaligned, it becomes difficult for the scanner unit 300 to correctly read the image of the document.
Therefore, the upper resin member 381 and the lower resin member 383 need to be properly arranged at predetermined positions and fixed so as not to cause misalignment. In this embodiment, the upper resin member 381 and the lower resin member 383 are correctly arranged at predetermined positions by five types of fixing portions 391, 392, 393, 394, and 395, and are fixed so as not to cause positional deviation. ing.

As shown in FIG. 25, the first fixing portion 391 has a recess 401 and a through hole 402 provided in the upper resin member 381, a through hole 403 provided in the sheet metal member 382, and a screw 411. . The through hole 402 is arranged inside the recess 401 and penetrates the upper resin member 381 .
The screw 411 has a head portion 412 arranged on the +Z axis direction side, a second shaft portion 414 arranged on the −Z axis direction side, and a second shaft portion 414 arranged between the head portion 412 and the second shaft portion 414 . 1 shaft portion 413 . The screw 411 has a circular shape in plan view in the Z-axis direction. Furthermore, in the screw 411, the outer diameter (diameter) of the head portion 412, the outer diameter of the first shaft portion 413, and the outer diameter of the second shaft portion 414 decrease in this order. The screw 411 is made of metal (for example, iron) like the sheet metal member 382 .
Further, the through hole 403 is formed with a spiral groove (not shown) into which the second shaft portion 414 of the screw 411 can be screwed.
With this configuration, in the first fixing portion 391 , the screw 411 is screwed into the through hole 403 of the sheet metal member 382 , and the upper resin member 381 and the sheet metal member 382 are positioned and fixed by the screw 411 .

In the present embodiment, between the components of the first fixing portion 391 made of metal (the sheet metal member 382 and the screw 411) and the components of the first fixing portion 391 made of resin (the upper resin member 381) There is a gap in
Specifically, the screw 411 is arranged such that the head 412 is in contact with the bottom surface 401a of the recess 401 of the upper resin member 381, and a gap 414a is provided between the upper resin member 381 and the sheet metal member 382. Also, the dimension of the gap 414a is approximately 0.1 mm.
Instead of providing the gap 414a between the upper resin member 381 and the sheet metal member 382, a gap may be provided between the head portion 412 and the bottom surface 401a of the concave portion 401 of the upper resin member 381. Furthermore, a configuration may be adopted in which gaps are provided both between the upper resin member 381 and the sheet metal member 382 and between the head portion 412 and the bottom surface 401 a of the recess 401 of the upper resin member 381 .
The first shaft portion 413 of the screw 411 is arranged inside the through hole 402 of the upper resin member 381, and a gap 413a is provided between the first shaft portion 413 of the screw 411 and the through hole 402 of the upper resin member 381. ing. A gap 413a between the first shaft portion 413 and the through-hole 402 is formed on both the −X-axis direction side of the first shaft portion 413 of the screw 411 and the +X-axis direction side of the first shaft portion 413 of the screw 411. is provided. Moreover, the dimension of the gap 413a is approximately 0.3 mm.
The gap 413a arranged on the −X-axis direction side with respect to the first shaft portion 413 of the screw 411 and the gap 413a arranged on the +X-axis direction side with respect to the first shaft portion 413 of the screw 411 are They may have the same dimensions or they may have different dimensions.

The upper resin member 381 is a member elongated in the X-axis direction. The resin forming the upper resin member 381 is more flexible and easily deformed than the metal forming the sheet metal member 382 . Furthermore, when the upper resin member 381 is formed by molding resin, the upper resin member 381 tends to warp due to the heat generated during the molding process. Therefore, it is difficult to finish the upper resin member 381 made of resin into a desired shape.
Since the sheet metal member 382 is made of metal, it is possible to improve the mechanical strength as well as the mechanical accuracy as compared with the case where the sheet metal member 382 is made of resin. Therefore, the sheet metal member 382 can be processed into a desired shape.
When the upper resin member 381 and the sheet metal member 382 are fixed with screws 411 , the shape of the upper resin member 381 is corrected so as to follow the shape of the sheet metal member 382 . That is, the sheet metal member 382 has a role of correcting the shape of the upper resin member 381 .

However, the upper resin member 381 and the sheet metal member 382 have different thermal expansion coefficients, and the thermal expansion coefficient of the upper resin member 381 is larger than that of the sheet metal member 382 . Therefore, when the exterior member 380 is heated, the upper resin member 381 expands more than the sheet metal member 382 . If the upper resin member 381 and the sheet metal member 382 are fastened together with the screw 411, the upper resin member 381 may be heated due to the difference in thermal expansion coefficient between the upper resin member 381 and the sheet metal member 382. becomes deformed.

In the first fixing portion 391, a gap 414a of approximately 0.1 mm is provided between the upper resin member 381 and the sheet metal member 382. Therefore, when the exterior member 380 is heated, the upper resin member 381 and the sheet metal member 381 are separated from each other. 382 and deformation of the upper resin member 381 can be suppressed. Furthermore, the distance between the upper resin member 381 and the sheet metal member 382 in the Z-axis direction is controlled to 0.1 mm or less. That is, when the upper resin member 381 and the sheet metal member 382 are fixed by the screws 411 in the first fixing portion 391, the distance between the upper resin member 381 and the sheet metal member 382 in the Z-axis direction is 0.1 mm or less. , the shape of the upper resin member 381 is corrected so as to follow the shape of the sheet metal member 382 .
Furthermore, since the screw 411 is made of metal like the sheet metal member 382 , the screw 411 expands more than the upper resin member 381 when the exterior member 380 is heated. Since a gap 413a of 0.3 mm is provided between the screw 411 and the upper resin member 381, when the exterior member 380 is heated and the screw 411 expands more than the upper resin member 381, the screw 411 and the upper resin member 381 are separated. 381 and deformation of the upper resin member 381 can be suppressed.

Although illustration is omitted, the second fixing portion 392 has the same configuration as the first fixing portion 391 . That is, there is a gap between the components of the second fixing portion 392 made of metal (the sheet metal member 382 and the screw 411) and the components of the second fixing portion 392 made of resin (the lower resin member 383). is provided.
A gap of approximately 0.1 mm is provided between the lower resin member 383 and the sheet metal member 382 in the second fixing portion 392 . As a result, when the exterior member 380 is heated, the sheet metal member 382 and the lower resin member 383 interfere with each other, and deformation of the lower resin member 383 can be prevented. Furthermore, the distance between the sheet metal member 382 and the lower resin member 383 in the Z-axis direction is controlled to 0.1 mm or less. That is, when the sheet metal member 382 and the lower resin member 383 are fixed by the screws 411 at the second fixing portion 392, the distance between the sheet metal member 382 and the lower resin member 383 in the Z-axis direction becomes 0.1 mm or less. Thus, the shape of the lower resin member 383 is corrected so as to follow the shape of the sheet metal member 382 .

As shown in FIG. 26 , in the fourth fixing portion 394 , the lower resin member 383 is provided with a boss portion (convex portion) 421 projecting in the +Z-axis direction, and the sheet metal member 382 is provided with a boss hole 422 . In the fourth fixing portion 394 , the sheet metal member 382 and the lower resin member 383 are positioned and fixed by fitting the boss portion 421 of the lower resin member 383 into the boss hole 422 of the sheet metal member 382 .

Although illustration is omitted, the third fixing portion 393 has the same configuration as the fourth fixing portion 394 . That is, in the third fixing portion 393, the upper resin member 381 is provided with a boss portion (convex portion) that protrudes in the −Z-axis direction, and the sheet metal member 382 is provided with a boss hole. In the third fixing portion 393 , the upper resin member 381 and the sheet metal member 382 are positioned and fixed by fitting the boss portion of the upper resin member 381 into the boss hole of the sheet metal member 382 .

As shown in FIG. 27, in the fifth fixing portion 395, the upper resin member 381 is provided with a boss portion (convex portion) 416 protruding in the −Z-axis direction, and the lower resin member 383 is provided with a column portion extending in the +Z-axis direction. 417 is provided. Furthermore, a boss hole 418 into which a boss portion (convex portion) 416 can be fitted is provided on the surface of the column portion 417 facing the upper resin member 381 . In the fifth fixing portion 395, the upper resin member 381 and the lower resin member 383 are fixed by fitting the boss portion 416 of the upper resin member 381 into the boss hole 418 provided in the column portion 417 of the lower resin member 383. is fixed in position.
In this manner, in the fixed portions (the third fixed portion 393, the fourth fixed portion 394, and the fifth fixed portion 395) arranged in the central portion in the X direction and the central portion in the Y direction, the sheet metal member 382 and the resin member 381 , 383, that is, without providing a gap. As a configuration for absorbing at the fixed portions (first fixed portion 391 and second fixed portion 392) arranged at the ends in the Y-axis direction, the difference in expansion coefficient between the sheet metal member 382 and the resin members 381 and 383 is considered. can be reliably positioned.

As described above, in this embodiment, the upper resin member 381, the sheet metal member 382, and the lower resin member 383 are positioned and fixed to each other by the five types of fixing portions 391, 392, 393, 394, and 395. .
Furthermore, the problem that it is difficult to finish the target shape if the exterior member 380 is configured only by the upper resin member 381 and the lower resin member 383 is processed with high precision between the upper resin member 381 and the lower resin member 383. By providing a flexible sheet metal member 382 and making the shapes of the upper resin member 381 and the lower resin member 383 follow the shape of the sheet metal member 382, the exterior member 380 can be finished into a desired shape.

REFERENCE SIGNS LIST 1 printing system 10 printing device 100 document reading device 110 hinge 111 case 111a surface 115 rotating shaft 117 biasing member 121 convex portion 200 ADF 205 Document transport section 300 Scanner section 307 Screw hole 307a Adjusting screw 308 Screw hole 308a Fixing screw 37, 310 Fixing member 311, 312 Side wall 313 Rear wall 314 ... wall on the front side, 315, 316 ... wall, 317 ... inclined wall, 318 ... screw hole, 318a ... screw, 320 ... slit.

Claims (15)

a printing unit for printing on a medium;
a document reading unit arranged above the printing unit so as to be openable and closable with respect to the printing unit and reading an image of a document;
with
The document reading unit has a document transport section for transporting a document, and a transport control circuit section for controlling the document transport section,
The transport control circuit unit has a connector to which a cable can be connected,
a connection direction of the cable with respect to the connector and the transport control circuit unit are parallel;
A connection direction of the cable with respect to the transfer control circuit unit and the connector is arranged in a direction intersecting a horizontal plane and a vertical plane,
A printing system characterized by: a printing unit for printing on a medium;
a document reading unit arranged above the printing unit so as to be openable and closable with respect to the printing unit and reading an image of a document;
with
The printing unit has a detachable recording unit that prints on a medium,
The document reading unit has a document transport section for transporting a document, and a transport control circuit section for controlling the document transport section,
The transport control circuit unit has a connector to which a cable can be connected,
a direction in which the cable is connected to the transfer control circuit unit and the connector is arranged in a direction that intersects a horizontal plane;
attaching and detaching the cable to and from the connector when attaching and detaching the recording unit;
A printing system characterized by: A connection direction of the cable with respect to the transfer control circuit unit and the connector is arranged in a direction that intersects a vertical plane;
3. The printing system according to claim 2, characterized by: The printing unit has a device control circuit for transmitting and receiving signals,
a relay circuit section for electrically connecting the apparatus control circuit section and the conveyance control circuit section is further provided below the conveyance control circuit section;
The device control circuit unit transmits and receives the signal via the relay circuit unit.
4. The printing system according to any one of claims 1 to 3, characterized by: The relay circuit section is provided in the printing unit,
5. The printing system according to claim 4, characterized by: a printing unit for printing on a medium;
a document reading unit arranged above the printing unit so as to be openable and closable with respect to the printing unit and reading an image of a document;
with
The document reading unit has a document transport section for transporting a document, and a transport control circuit section for controlling the document transport section,
The transport control circuit unit has a connector to which a cable can be connected,
a direction in which the cable is connected to the transfer control circuit unit and the connector is arranged in a direction that intersects a horizontal plane;
The printing unit
a device control circuit for transmitting and receiving signals;
a relay circuit unit provided below the transport control circuit unit and electrically connecting the device control circuit unit and the transport control circuit unit;
The device control circuit unit transmits and receives the signal via the relay circuit unit.
A printing system characterized by: A connection direction of the cable with respect to the transfer control circuit unit and the connector is arranged in a direction that intersects a vertical plane;
7. The printing system according to claim 6, characterized by: The relay circuit section is provided in a housing of the printing unit,
8. The printing system according to any one of claims 5 to 7, characterized by: the distance between the transport control circuit unit and the relay circuit unit is shorter than the distance between the relay circuit unit and the device control circuit unit;
5. The printing system according to claim 4, characterized by: the distance between the transport control circuit unit and the relay circuit unit is shorter than the distance between the relay circuit unit and the device control circuit unit;
9. The printing system according to any one of claims 5 to 8, characterized by: the transport control circuit unit and the relay circuit unit are electrically connected by a first cable unit;
the device control circuit section and the relay circuit section are electrically connected by a second cable section;
the length of the first cable portion is shorter than the length of the second cable portion;
11. The printing system according to any one of claims 4 to 10, characterized in that: The first cable portion is a flexible flat cable,
12. The printing system according to claim 11, characterized by: The second cable portion is a flexible flat cable,
13. The printing system according to claim 11 or 12, characterized in that: further comprising a plurality of hinges for displacing the document reading unit with respect to the printing unit;
The transport control circuit unit is provided between the plurality of hinge units,
14. The printing system according to any one of claims 1 to 13, characterized in that: the cable connected to the connector of the transport control circuit section passes between the plurality of hinge sections;
15. The printing system of claim 14, characterized by:

Images