Reading device

Abstract

To provide a reader that facilitates maintenance work for a reading sensor provided on a document cover.SOLUTION: In a multi-functional machine, a scanner unit is provided with: a platen glass on which a document is placed; a document cover that covers the platen glass at a closed position; a conveying mechanism that is provided on the document cover and conveys a document along a conveyance path; a second reading sensor that is provided on the document cover and reads the document; a document support member 97 that is movable to a first position where it is opposite to a reading surface 120 and a second position where it is separated from the reading surface 120; a pressing plate 82 that is movable to a third position where it is attached to an undersurface of the document cover and a fourth position where it is removed from the undersurface; and an interlock mechanism that, in interlock with the movement of the pressing plate 82 from the third position to the fourth position, moves the document support member 97 from the first position to the second position.SELECTED DRAWING: Figure 6

Description

[Technical field]

[0001] The present invention relates to a reading device in which an original cover that covers a platen glass of a support table has a reading sensor that reads an original conveyed along a conveying path. [Background technology]

[0002] A reading device in which a reading sensor is arranged on a document cover that covers a platen glass is known. In Patent Document 1, an automatic document feeder 50 is arranged on the document cover. The automatic document feeder 50 has a second image reading unit 67. When an opening unit 70 in the automatic document feeder 50 is rotated, a reading surface 67a of the second image reading unit 67 is exposed to the outside. A user performs maintenance work such as cleaning the reading surface 67a of the second image reading unit 67 in the maintenance space B. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2015-171130 A Summary of the Invention [Problem to be solved by the invention]

[0004] A pressure plate that covers the platen glass is disposed on the underside of the document cover. If the pressure plate is located below the second image reading unit 67, maintenance work would require removing the pressure plate from the document cover before rotating the opening unit 70, which would be troublesome.

[0005] The present invention has been made in consideration of the above-mentioned circumstances, and has an object to provide a reading device that allows easy maintenance of a reading sensor provided in a document cover. [Means for solving the problem]

[0006] (1) A reading device according to the present invention comprises a platen glass on which an original is placed, an original cover movable between an open position and a closed position relative to the platen glass and covering the platen glass in the closed position, a transport mechanism provided in the original cover and transporting the original along a transport path, a reading sensor provided in the original cover and optically reading the original transported along the transport path, an original support member located opposite a reading surface of the reading sensor across the transport path and movable between a first position opposite the reading surface and a second position away from the reading surface, a pressure plate located on the underside of the original cover and positioned below the reading sensor in the closed position to abut against the platen glass, and movable between a third position attached to the underside of the original cover and a fourth position detached from the underside, and an interlocking mechanism that moves the original support member from the first position to the second position in conjunction with movement of the pressure plate from the third position to the fourth position.

[0007] According to this configuration, when the pressing plate is removed from the bottom surface of the document cover, the document support member moves to the second position, which facilitates maintenance of the reading sensor, such as cleaning the reading surface of the reading sensor.

[0008] (2) Preferably, the reading device further includes a moving reading sensor located below the platen glass, moving to a reading position on the transport path and optically reading the document transported on the transport path. The pressure plate is located to the right of the reading position in the left-right direction and is movable to the third position and the fourth position by rotating about a rotation axis along a front-rear direction perpendicular to the left-right direction, the document support member is movable to the first position and the second position by rotating about a rotation axis along the front-rear direction, and the rotation axis of the document support member is located to the left of the rotation axis of the pressure plate in the left-right direction.

[0009] According to this configuration, since the document support member rotates at a larger angle than the pressing plate when the pressing plate rotates, maintenance work for the reading sensor is easy.

[0010] (3) Preferably, in the reading device, the interlocking mechanism has a connection member that connects the rotation tip side of the document support member and the pressing plate.

[0011] (4) Preferably, the reading device further includes an elastic member that urges the document supporting member toward the first position.

[0012] According to this configuration, at the first position, the document support member can be accurately positioned with respect to the reading surface of the reading sensor.

[0013] (5) Preferably, the reading device includes a platen glass on which an original is placed, an original cover movable between an open position and a closed position relative to the platen glass and covering the platen glass in the closed position, a transport mechanism provided in the original cover and transporting the original along a transport path, a reading sensor provided in the original cover and optically reading the original transported along the transport path, an original support member located opposite a reading surface of the reading sensor across the transport path and movable between a first position opposite the reading surface and a second position away from the reading surface, and a pressure plate located on the underside of the original cover and located below the reading sensor in the closed position to abut against the platen glass. The pressing plate has a first portion fixed to the underside of the manuscript cover, a second portion movable between a third position attached to the underside of the manuscript cover and a fourth position removed from the underside, and the manuscript support member is provided on the second portion and is in the first position when the second portion is in the third position, and is in the second position when the second portion is in the fourth position.

[0014] According to this configuration, maintenance work for the reading sensor can be performed by rotating only the second portion, so that a large force is not required to rotate the pressing plate. Effect of the Invention

[0015] According to the present invention, the maintenance work for the reading sensor provided on the document cover can be easily performed. [Brief description of the drawings]

[0016] [Figure 1] FIG. 1 is a perspective view of the appearance of a multifunction peripheral 1 according to an embodiment of the present invention. [Diagram 2] FIG. 2 is a perspective view showing the external configuration of the scanner unit 3. As shown in FIG. [Diagram 3] FIG. 3 is a plan view showing the main components of the scanner unit 3 below the platen glass 80. As shown in FIG. [Figure 4] FIG. 4 is a cross-sectional view showing the internal configuration of the ADF 5 according to the embodiment of the present invention. [Diagram 5] FIG. 5 is a perspective view showing the lower portion 38 of the document cover 30. As shown in FIG. [Figure 6] FIG. 6 is a perspective view showing the lower portion 38 of the document cover 30 with the pressing plate 82 removed from the lower surface of the document cover 30. As shown in FIG. [Figure 7] FIG. 7 is an enlarged cross-sectional view of the document support member 97 and its periphery. [Figure 8] FIG. 8 is an enlarged cross-sectional view of the periphery of the document support member 97, showing a state in which the document support member 97 is in the second position S2 and the pressing plate 82 is in the fourth position S4. [Figure 9] FIG. 9 is a perspective view showing a lower portion 38A of a scanner unit according to a modified example. [Figure 10] FIG. 10 is an enlarged cross-sectional view of the periphery of the document support member 97A. [Figure 11] FIG. 11 is an enlarged cross-sectional view showing a state in which the document support member 97A is in the second position S2 and the pressing plate 82A is in the fourth position S4. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0017] Hereinafter, an embodiment of the present invention will be described. Note that the embodiment described below is merely one example of the present invention, and it goes without saying that the embodiment of the present invention can be appropriately modified within the scope of the present invention. In addition, in the following description, the progress from the starting point of the arrow to the end point is expressed as the direction, and the movement on the line connecting the starting point and the end point of the arrow is expressed as the direction. In other words, the direction is one component of the direction. Furthermore, the up-down direction 7 is defined based on the posture in which the multifunction device 1 is installed on a horizontal surface so that it can be used, the front-rear direction 8 is defined with the surface in which the opening 4 of the multifunction device 1 is provided as the front, and the left-right direction 9 is defined when the multifunction device 1 is viewed from the front. In this embodiment, in the usage posture, the up-down direction 7 corresponds to the vertical direction, the front-rear direction 8 and the left-right direction 9 correspond to the horizontal direction, and the front-rear direction 8 and the left-right direction 9 are orthogonal to each other.

[0018] [Overall structure of MFP 1] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings. Fig. 1 is a perspective view showing the external configuration of a multifunction peripheral 1 equipped with an ADF (Auto Document Feeder) 5 according to an embodiment of the present invention.

[0019] 1, the multifunction device 1 is a multifunction device (MFD) that integrally comprises an inkjet recording printer unit 2 provided at the bottom and a scanner unit 3 (an example of a reading device) provided at the top, and has print, scan, copy, facsimile functions, etc. Note that, in the present invention, it is sufficient to have only the scanner unit 3 equipped with the ADF 5. In other words, the functions other than the scan function are optional, and the present invention may be embodied as a scanner whose only function is the scan function.

[0020] In the copy function, image data read by the scanner unit 3 is recorded on recording paper by the printer unit 2. In the facsimile function, image data read by the scanner unit 3 is transmitted by facsimile over a telephone line or the like. In addition, received facsimile data is recorded on recording paper by the printer unit 2.

[0021] In the scan function, image data of the document 12 read by the scanner unit 3 is transferred to a computer connected to the device by wire or wirelessly. The read image data can also be transferred to and stored in various storage media such as a memory card or a USB (Universal Serial Bus) memory.

[0022] [Scanner section 3 configuration] The scanner unit 3 includes an ADF document tray 33, an ADF discharge tray 34, a transport path 151, a transport mechanism 16, a first reading sensor 85, and a second reading sensor 95, as shown in FIGS.

[0023] As shown in FIG. 1, the appearance of the multifunction device 1 is generally formed as a wide, thin rectangular parallelepiped whose width and depth are greater than its height. The printer unit 2 at the bottom of the multifunction device 1 has a housing 10 that constitutes the frame of the printer unit 2. An opening 4 is formed in a front panel 11 that constitutes the front of the housing 10. Inside the opening 4, a paper feed tray 20 and a paper discharge tray 21 are provided in two stages, one above the other. A connector panel 13 on which various connectors are arranged is provided above the opening 4. A slot section 18 is arranged at the right end of the connector panel 13. The slot section 18 allows various memory cards to be loaded and electrically connects the controller of the multifunction device 1 to the memory card. A memory card is a card-type storage device that has a built-in flash memory as a storage medium. In the slot section 18, a first card slot 19 and a second card slot 22 of different slot types are provided side by side to allow different types of memory cards to be loaded. An ink cartridge is accommodated at the right end of the width direction of the front panel 11.

[0024] An operation panel 6 for operating the printer unit 2 and scanner unit 3 is provided on the upper front surface of the multifunction device 1. The operation panel 6 is configured with various operation buttons 35 and a liquid crystal display 36 appropriately provided. The multifunction device 1 operates based on instructions inputted through the operation panel 6. When the multifunction device 1 is connected to an external computer, the multifunction device 1 also operates based on instructions transmitted from the computer via a printer driver or scanner driver.

[0025] The schematic configuration of the scanner unit 3 will be described below with reference to FIGS.

[0026] In the scanner unit 3, the document cover 30 is attached to the document reading stand 15 functioning as an FBS (Flatbed Scanner) via a hinge on the rear side so as to be openable and closable in the direction of arrow P1 in FIG. 2. The document cover 30 is movable between an open position and a closed position relative to a platen glass 80 (see FIG. 4). The document cover 30 covers the platen glass 80 in the closed position. The document cover 30 is integrally provided with an ADF 5, and the ADF 5 also moves as the document cover 30 is opened and closed. The ADF document tray 33, the ADF discharge tray 34, the transport path 151, the transport mechanism 16, and the second reading sensor 95 are located on the document cover 30, and the first reading sensor 85 is located on the document reading stand 15.

[0027] A platen glass 80 is provided on the upper surface of the document reading table 15. When the document cover 30 is closed on the document reading table 15, the platen glass 80 is covered by the document cover 30. A pressing plate 82 is provided on the lower surface of the document cover 30, i.e., the surface facing the platen glass 80.

[0028] When the document cover 30 is in the closed position, the pressing plate 82 is located below the second reading sensor 95 and abuts against the platen glass 80. The pressing plate 82 presses and fixes the document 12 placed on the platen glass 80. The components of the pressing plate 82 will be described later.

[0029] The platen glass 80 is, for example, a transparent glass plate or an acrylic plate. A positioning member 83 is provided at the left end of the platen glass 80 to separate a reading area 80A (an example of a reading position) when the ADF 5 is used to read an image of the original 12 from a reading area 80B when the scanner unit 3 is used as an FBS. The positioning member 83 is a positioning reference when the original 12 is placed on the platen glass 80. When the ADF 5 is used, the positioning member 83 functions as a guide to guide the original 12 passing over the reading area 80A back to a transport path 151 provided in the ADF 5.

[0030] A first image reading unit 32 is built into the document reading platform 15. When the scanner section 3 is used as an FBS, the document cover 30 is opened and the document 12 is placed on the platen glass 80. Then, the document cover 30 is closed and the document 12 is fixed on the platen glass 80. The first image reading unit 32 moves below the platen glass 80 and reads the image of the document 12 placed on the platen glass 80.

[0031] The first image reading unit 32 has a first contact image sensor (an example of a moving reading sensor, referred to as a Contact Image Sensor, hereinafter referred to as the "first CIS") 85 and a CIS carriage 86 in the shape of a long and narrow rectangular parallelepiped. The first CIS 85 is located below the platen glass 80 and faces the lower surface of the platen glass 80. The first CIS 85 is located upstream of the curved portion 54 in the conveying path 151 in the conveying direction 17. The first CIS 85 optically reads an image of the original 12 from below the conveying path 151. The first CIS 85 is a so-called contact type line image sensor that emits light from a light source such as an LED to irradiate the original 12 with light, guides the reflected light from the original 12 to a photoelectric conversion element through a lens, and the photoelectric conversion element outputs an electrical signal according to the intensity of the reflected light. The first CIS 85 is mounted on the CIS carriage 86 and reciprocates below the platen glass 80.

[0032] As shown in FIG. 3, a guide shaft 87 is installed across the casing 84 in the left-right direction 9. The first image reading unit 32 is supported so as to be smoothly movable below the platen glass 80 in a direction perpendicular to the longitudinal direction of the CIS carriage 86 (left-right direction 9) by fitting the CIS carriage 86 into the guide shaft 87. A CIS carriage drive mechanism 88 is provided along the guide shaft 87. The CIS carriage drive mechanism 88 is configured by installing a timing belt 89 between pulleys. The CIS carriage 86 is fixed to the timing belt 89 of the CIS carriage drive mechanism 88, and is reciprocated by the circumferential motion of the timing belt 89. This allows the CIS carriage 86 to move parallel to the lower surface of the platen glass 80 when the scanner unit 3 is used as an FBS, and at that time, the first CIS 85 mounted on the CIS carriage 86 can read an image of the document 12 placed on the platen glass 80.

[0033] 1 and 2, the document cover 30 has an ADF document tray 33 and an ADF discharge tray 34 arranged in two upper and lower stages. A pair of ADF document guides 93 are provided on the ADF document tray 33, spaced apart in the front-rear direction 8 of the multifunction device 1, so as to be slidable in the front-rear direction 8. The ADF document guides 93 stand upright from the ADF document tray 33 and regulate the widthwise position of the document 12 placed on the ADF document tray 33.

[0034] The ADF document guides 93 are configured such that when one of the ADF document guides 93 is slid, the other ADF document guide 93 is also slid in the opposite direction in response to a known interlocking mechanism such as a rack and pinion.

[0035] ADF discharge tray 34 is formed integrally with the pair of ADF document guides 93, spaced apart above ADF document tray 33. ADF discharge tray 34 is configured as a eaves-like flat plate extending inward from the top of ADF document guide 93. ADF discharge tray 34 is provided below the top surface of upper tray 179 (see FIG. 4) which constitutes a lower discharge guide for discharge chute section 158, which will be described later.

[0036] Both sides of the original 12 discharged from the ADF 5 are supported by the ADF discharge tray 34 and held in a state separated from the original on the ADF original tray 33. Since the length of the ADF discharge tray 34 in the discharge direction is shorter than the length of the original 12, the leading edge of the original 12 in the discharge direction is held on the ADF original tray 33 so as to hang down from the ADF discharge tray 34.

[0037] 4, the housing of the ADF 5 is composed of an ADF main body 152 molded integrally with the document cover 30, and an ADF cover 153 provided rotatably relative to the ADF main body 152. This ADF cover 153 mainly forms the upper surface of the housing of the ADF 5. The ADF cover 153 is rotated in the direction of arrow P2 in the figure around a rotation axis provided on the side of the ADF main body 152 (the left side in FIG. 4) relative to the ADF main body 152. This exposes part of the inside of the ADF 5.

[0038] The ADF cover 153 changes its position between a closed position and an open position by being rotated relative to the ADF main body 152. When the ADF 5 is in use, the ADF cover 153 is in the closed position. The ADF cover 153 is engaged with the ADF main body 152 in the closed position.

[0039] A transport mechanism 16 is provided inside the ADF 5 to transport the original 12 in a transport direction 17 from the ADF original tray 33 to the ADF discharge tray 34 along a transport path 151. The transport mechanism 16 has a suction roller 164, a separation roller 166 (hereinafter also referred to as first rollers 164, 166), a second transport roller 168, a second pinch roller 169 (hereinafter also referred to as second rollers 168, 169), a third transport roller 171, and a third pinch roller 172 (hereinafter also referred to as third rollers 171, 172).

[0040] The transport path 151 is formed in a generally horizontal U-shape in cross section, and is divided into a lower transport path 159, a curved path 157, and an upper transport path 160. The transport path 151 is constituted by an ADF main body 152 and an ADF cover 153.

[0041] Suction chute section 154 is formed so as to continue from ADF document tray 33 to transport path 151. Suction chute section 154 of ADF 5 is formed so as to continue to the space above ADF document tray 33. Suction chute section 154 has an upper surface as a guide surface for document 12 and is configured as a passage of a predetermined width in vertical direction 7. If the surface facing downward of document 12 placed on ADF document tray 33 is defined as first surface 51 and the surface facing upward is defined as second surface 52, document 12 from which an image is to be read is placed on ADF document tray 33 with first surface 51 facing downward so that the leading edge in the paper feed direction is inserted into suction chute section 154.

[0042] The suction chute 154 is provided with a sheet supply mechanism composed of a plurality of roller bodies, etc. The sheet supply mechanism has a suction roller 164 and a suction nip piece 165 pressed against the suction roller 164, and a separation roller 166 and a separation nip piece 167 pressed against the suction roller 164. Note that the configuration of each roller and nip piece is merely one example of the sheet supply mechanism, and it goes without saying that the number and arrangement of rollers can be changed, pinch rollers can be used instead of each nip piece, or another known sheet supply mechanism can be used.

[0043] The first rollers 164 and 166 are rotated by the driving force transmitted from the LF conveying motor.

[0044] The suction nip piece 165 is provided at a position facing the suction roller 164 so as to be movable up and down in a direction toward and away from the suction roller 164. The suction nip piece 165 is biased downward by a spring member (not shown) and is in contact with the suction roller 164 without nipping the document 12.

[0045] The separation nip piece 167 is provided at a position facing the separation roller 166 so as to be movable up and down in a direction toward and away from the separation roller 166. The separation nip piece 167 is biased downward by a spring member (not shown), and is in pressure contact with the roller surface of the separation roller 166 in a state where it is not nipping the document 12.

[0046] The lower conveying path 159 of the conveying path 151 is formed continuously and gently inclined as a passage of a predetermined width from near the outlet of the suction chute portion 154 to near the outlet of the reading area 80A.

[0047] In the lower conveying path 159, from upstream to downstream in the conveying direction 17, a second conveying roller 168, a second pinch roller 169, a document sensor 116, a second image reading unit 94, a positioning member 83, a first document guide 173, and a first image reading unit 32 are arranged.

[0048] The second pinch roller 169 is provided with its axial direction aligned with the width direction (front-rear direction 8) of the lower conveying path 159. The second pinch roller 169 is provided rotatably with a part of its roller surface exposed to the lower conveying path 159.

[0049] A second conveying roller 168 is provided at a position facing the second pinch roller 169 across the lower conveying path 159. The second pinch roller 169 is supported in a state in which it is biased toward the second conveying roller 168 by a coil spring (not shown) or the like, and the roller surface of the second pinch roller 169 is in pressure contact with the roller surface of the second conveying roller 168 in the lower conveying path 159. The second conveying roller 168 is connected to an LF conveying motor via a drive transmission mechanism (not shown), and is rotated by the driving force transmitted from the LF conveying motor.

[0050] In the lower conveying path 159, a document sensor 116 is disposed downstream of the second rollers 168, 169. The document sensor 116 detects the leading and trailing ends of the document 12 fed by the second rollers 168, 169.

[0051] In the lower transport path 159, a second image reading unit 94 is disposed downstream of the document sensor 116. The second image reading unit 94 has a second contact image sensor (an example of a second reading sensor, and referred to as a Contact Image Sensor, hereinafter referred to as a "second CIS") 95, a second platen 96, and a document support member 97. The second image reading unit 94 reads the second side 52 of the document 12. The second CIS 95 optically reads the document 12 transported on the transport path 151 in a manner similar to that of the first CIS 85.

[0052] The second CIS 95 is disposed to face the upper surface of the second platen 96. The second CIS 95 is located upstream of the first CIS 85 in the transport path 151 in the transport direction 17. The second CIS 95 has a rectangular parallelepiped shape, and is placed on the upper surface of the second platen 96. The second CIS 95 has a reading surface 120, an upstream end 121, and a downstream end 122.

[0053] The upstream end 121 is an end of the second CIS 95 on the upstream side in the conveying direction 17. The downstream end 122 is an end of the second CIS 95 on the downstream side in the conveying direction 17. The upstream end 121 is located higher than the downstream end 122 in the conveying direction 17.

[0054] The second platen 96 is disposed above the lower transport path 159. The second platen 96 is in the form of a plate having a predetermined thickness. The lower surface of the second platen 96 is parallel to the document 12 transported on the lower transport path 159.

[0055] The reading surface 120 is aligned along the conveying direction 17. The reading surface 120 is parallel to the document 12 conveyed on the lower conveying path 159.

[0056] 4, the document support member 97 is disposed at a position facing the reading surface 120 of the second CIS 95 across the transport path 151. The document support member 97 will be described later.

[0057] In the lower transport path 159, a positioning member 83 is disposed downstream in the transport direction 17 of the second image reading unit 94. The left end portion (the downstream end portion in the transport direction 17) of the positioning member 83 is an inclined surface that slopes downward toward the transport direction 17, and guides the original 12 that has passed through the second image reading unit 94 to between the platen glass 80 and the first original guide 173.

[0058] In the lower transport path 159, the first image reading unit 32 is disposed downstream in the transport direction 17 of the positioning member 83. The first image reading unit 32 reads the first surface 51 of the document 12.

[0059] The first document guide 173 is provided at a position facing the first image reading unit 32 of the document cover 30. The first document guide 173 has a horizontal portion facing the reading area 80A and inclined portions extending upward from both ends of the horizontal portion to the upstream side and downstream side. The first document guide 173 is biased toward the reading area 80A by a spring member fixed to the ADF main body 152. Convex portions are formed at both ends of the horizontal portion of the first document guide 173 in the front-rear direction 8. When the convex portions come into contact with the reading area 80A, a gap is formed between the horizontal portion of the first document guide 173 and the reading area 80A in the up-down direction 7, through which the document 12 can pass.

[0060] The curved path 157 of the conveying path 151 starts near the exit of the reading area 80A, extends upward, and curves significantly from left to right in Fig. 4. The downstream end of the curved path 157 in the conveying direction 17 continues to the upper conveying path 160. The curved path 157 is formed with the third conveying roller 171 as an inner conveying guide surface, and the ADF main body 152 and the ADF cover 153 as outer conveying guide surfaces.

[0061] Third rollers 171 and 172 are provided on the curved path 157. The third conveying roller 171 is located on the inner side of the curve of the curved path 157, and the third pinch roller 172 is located on the outer side of the curve of the curved path 157. Part of the roller surfaces of the third conveying roller 171 and the third pinch roller 172 are exposed to the curved path 157.

[0062] The third pinch roller 172 is biased toward the third conveyor roller 171 by a coil spring (not shown) or the like. As a result, the roller surface of the third pinch roller 172 is pressed against the roller surface of the third conveyor roller 171 in the curved path 157. The third conveyor roller 171 is connected to an LF conveyor motor via a drive transmission mechanism (not shown), and is rotated by the driving force transmitted from the LF conveyor motor.

[0063] A discharge chute section 158 is formed in the upstream portion of the upper conveying path 160 in the conveying direction 17. The upper guide surface of the discharge chute section 158 is formed by the rear surface of the ADF cover 153. The lower guide surface of the discharge chute section 158 is formed by the upper tray 179 and the inclined section 180 formed continuously to the left from the upper tray 179. The discharge chute section 158 is configured as a passage separated by a predetermined width in the vertical direction by each of these guide surfaces. When the document 12 is discharged to the discharge chute section 158, the document 12 is guided to the ADF discharge tray 34 by the guide surface of the discharge chute section 158. The upper tray 179 is set above the nip position of the third rollers 171 and 172, and the upper end of the inclined surface of the inclined section 180 is disposed above the nip position of the third rollers 171 and 172.

[0064] The discharge chute section 158 is provided with a spring piece 190. The spring piece 190 supports the rear end of the document 12 discharged to the discharge chute section 158. The spring piece 190 is bent into a substantially L-shape in cross section, and is disposed immediately downstream in the conveying direction 17 from the nip position of the third rollers 171, 172. The spring piece 190 is made of an elastic plate material made of a stiff synthetic resin such as PET (polyethylene terephthalate) having a thickness of about 0.2 mm to 1.0 mm. The posture of the spring piece 190 changes up and down in cross section according to the load applied.

[0065] Fig. 5 is a perspective view showing the lower portion 38 of the document cover 30, and illustrates a state in which the pressing plate 82 is attached to the lower surface of the document cover 30. Fig. 6 is a perspective view showing the lower portion 38 of the document cover 30, and illustrates a state in which the pressing plate 82 is removed from the lower surface of the document cover 30.

[0066] 5 and 6, the pressing plate 82 is movable between a third position S3 attached to the underside of the document cover 30 and a fourth position S4 detached from the underside. The pressing plate 82 has a plate portion 74, a sponge portion 75, a protruding piece 76, a locking arm 70, and a pressing plate rotation shaft 77 (an example of a rotation shaft).

[0067] The plate portion 74 is a rectangular flat plate member that covers the lower portion of the document cover 30. A sponge portion 75 is provided on the lower surface of the plate portion 74.

[0068] The sponge portion 75 is made of a porous material such as sponge. The sponge portion 75 is provided so as to fit closely to the underside of the plate portion 74. The sponge portion 75 has a predetermined thickness in order to absorb the impact when the document cover 30 is closed and to improve the adhesion between the platen glass 80 and the document 12. A white reflecting portion 78 is provided on the entire underside of the sponge portion 75 in order to obtain a stable reflected light from the document 12.

[0069] A pair of protrusions 76 are provided on the left front and rear ends of the plate portion 74. The pair of protrusions 76, 76 are each provided so as to protrude upward from the plate portion 74. Each of the pair of protrusions 76, 76 is provided with a rectangular through hole 79 that is long in the longitudinal direction of the pressing plate 82 (the left-right direction 9 of the pressing plate 82 when in the third position S3).

[0070] The locking arms 70 are provided to the right of the pair of protrusions 76, 76 (to the right of the pressing plate 82 when in the third position S3). The pair of locking arms 70, 70 are provided so as to protrude upward from the plate portion 74. The pair of locking arms 70, 70 are provided with claw portions 71, 71, respectively, which are locked to locking portions (not shown) provided on the document cover 30. When the pair of locking arms 70, 70 are locked to the locking portions, the pressing plate 82 is disposed in the third position S3.

[0071] The pressing plate rotation shaft 77 is provided at the right end of the plate portion 74, as shown by the dashed line in Figures 5 and 6. The pressing plate rotation shaft 77 is provided at the front and rear ends of the plate portion 74 so as to protrude outward in the front-rear direction 8. The plate portion 74 of the pressing plate 82 is supported by the pressing plate rotation shaft 77 so as to be rotatable relative to the document cover 30. In other words, the pressing plate 82 is supported so as to be movable between the third position S3 and the fourth position S4 by rotation about the pressing plate rotation shaft 77 along the front-rear direction 8 (a direction perpendicular to the left-right direction 9).

[0072] Fig. 7 is an enlarged cross-sectional view showing the periphery of the document support member 97 arranged to face the reading surface 120 of the second CIS 95, and is a diagram showing a state in which the document support member 97 is at the first position S1 and the pressing plate 82 is at the third position S3. Fig. 8 is an enlarged cross-sectional view showing the periphery of the document support member 97 arranged to face the reading surface 120 of the second CIS 95, and is a diagram showing a state in which the document support member 97 is at the second position S2 and the pressing plate 82 is at the fourth position S4.

[0073] The original support member 97 has an original support main body 130, an original support member rotation shaft 131 (an example of a rotation shaft), a coil spring 132 (an example of an elastic member), a second original guide 133, and a connection shaft 136.

[0074] The document support main body 130 has a length approximately equal to that of the second platen 96 of the second image reading unit 94 in the front-rear direction 8, and is longer than the second platen 96 of the second image reading unit 94 in the left-right direction 9. The document support main body 130 has document support member rotation shafts 131, 131 at the front and rear portions on the right side, respectively.

[0075] The original support member rotation shafts 131 are provided so as to protrude outward from the original support main body 130 in the front-rear direction 8. The original support main body 130 rotates due to the original support member rotation shafts 131 having a rotation axis along the front-rear direction 8.

[0076] The coil spring 132 is wound around the document support member rotation shaft 131, with one end fixed to the document support main body 130 and the other end fixed to the document cover 30. The coil spring 132 biases the document support main body 130 toward the first position S1.

[0077] The second original guide 133 is provided in the original support main body 130. The second original guide 133 is a flat plate-shaped member disposed at a position facing the second image reading unit 94. The second original guide 133 has a guide horizontal portion 134 facing the reading surface 120, and an upstream inclined portion 135 that guides the original 12 transported from the upstream side of the transport path 151 to the guide horizontal portion 134.

[0078] 6, the connection shaft 136 is a member that connects the document support member 97 to the left end portion of the pressing plate 82. The connection shaft 136 is provided on the left side of the document support main body 130. The connection shaft 136 is provided as a shaft that protrudes from the document support main body 130 in the front-rear direction 8. The connection shaft 136 is inserted into the through hole 79 of the protruding piece 76.

[0079] In this embodiment, the scanner unit 3 has a connecting member 68 as an interlocking mechanism that connects the rotating tip side of the document support member 97 and the pressing plate 82. The connecting member 68 is composed of, for example, a protruding piece 76 and a connecting shaft 136. The connecting shaft 136 is disposed to the left of the pressing plate rotating shaft 77 in the left-right direction 9, and the document support member rotating shaft 131 of the document support member 97 is held in a through hole 79 of the pressing plate 82 in a slidable state.

[0080] [Image reading of document 12 using ADF12] In the scanner unit 3 configured as described above, the controller controls the transport mechanism 16, the first reading sensor 85, and the second reading sensor 95. Hereinafter, a description will be given with reference to FIG.

[0081] When reading an image of the original 12, the user places a plurality of sheets of the original 12 on the ADF original tray 33 with the first surface 51 of the original 12 facing downward. The user operates the operation panel 6 to input a command to start reading the image of the original 12.

[0082] In response to receiving a command to start image reading, the controller drives the CR motor and the LF motor. When the LF motor is driven, the intake roller 164, the separation roller 166, and the second conveying roller 168 are driven, and the lowermost document 12 among the multiple documents 12 is conveyed from the ADF document tray 33. When the CR motor is driven, the first CIS 85 moves to the reading area 80A.

[0083] The document sensor 116 detects the leading edge of the document 12 transported from the ADF document tray 33. Based on a detection signal from the document sensor 116, the controller transports the document 12 a predetermined distance and then starts image reading by the second CIS 95 and the first CIS 85.

[0084] The original 12 conveyed through the lower conveying path 159 has the first side 51 facing downward and the second side 52 facing upward. The image on the second side 52 of the original 12 is read by the second CIS of the second image reading unit 94.

[0085] The original 12, whose image has been read by the second image reading unit 94, is further guided by the positioning member 83 to the first image reading unit 32, where the image on the first side 51 is read by the first CIS. After the image has been read, the leading edge of the original 12 is guided upward and conveyed to the curved path 157 of the ADF 5.

[0086] The original 12 transported to the curved path 157 is transported so as to be largely curved from left to right on the outer circumferential surface of the third transport roller 171. The third pinch roller 172 rotates following the third transport roller 171. The third pinch roller 172 presses the original 12 against the third transport roller 171, and the rotational force of the third transport roller 171 is transmitted to the original 12. As a result, the original 12 is transported along the curved path 157 to the upper transport path 160 downstream.

[0087] When the original 12 transported through the curved path 157 is transported downstream in the transport direction 17 while being sandwiched between the third transport roller 171 and the third pinch roller 172, the leading edge of the original 12 rides up on the inclined surface of the spring piece 190 that inclines downstream in the transport direction 17. At this time, the spring piece 190 changes its position downward. As a result, the original 12 is guided downstream in the transport direction 17 inside the discharge chute section 158 while being elastically supported on the spring piece 190.

[0088] While the original 12 is being transported, the original sensor 116 detects the rear end of the original 12. The controller transports the original 12 a predetermined distance based on the detection signal of the original sensor 116, and then ends image reading by the second CIS 95 and the first CIS 85. Furthermore, the controller transports the original 12 after image reading a predetermined distance and discharges it onto the ADF discharge tray 34.

[0089] When the rear end of the original 12 leaves the nip position formed by the third conveying roller 171 and the third pinch roller 172, only the weight of the rear end of the original 12 is applied to the spring piece 190. When the rear end of the original 12 leaves the nip position, the rear end of the original 12 is lifted upward by the biasing force of the spring piece 190. The original 12 guided to the upper tray 179 is led to the ADF discharge tray 34 provided downstream in the conveying direction 17.

[0090] The lowermost document 12 among the multiple documents 12 placed on the ADF document tray 33 is transported by the intake roller 164 and the separation roller 166, and then transported by the second transport roller 168. The transport speed of the documents 12 by the separation roller 166 and the second transport roller 168 is faster than the transport speed of the documents 12 by the intake roller 164. Therefore, when the documents 12 are transported by the separation roller 166 and the second transport roller 168, the intake roller 164 rotates together, and the key of the roller shaft and the key groove of the intake roller 164 are separated. When the rear end of the documents 12 passes the intake roller 164, the rotation of the intake roller 164 stops until the key of the rotating roller shaft and the key groove of the intake roller 164 come into contact with each other. As a result, the rear end of the preceding document 12 and the front end of the succeeding document 12 are separated by a predetermined distance, so that the documents 12 are fed from the ADF document tray 33 one by one at a predetermined distance from each other from the multiple documents 12. The originals 12 fed one by one undergo image reading on the first side 51 and the second side 52 by the first CIS 85 and the second CIS 95 in the same manner as described above, and are discharged in sequence onto the ADF discharge tray .

[0091] [Maintenance of the 2nd CIS95] The user performs the maintenance of the second CIS 95 in the following procedure. The user opens the document cover 30 in the P1 direction (see FIG. 2) and moves the document cover 30 to the open position to expose the pressing plate 82. The user pulls out the exposed left end of the pressing plate 82 toward himself and moves the pressing plate 82 from the third position S3 to the fourth position S4 (see FIGS. 5 and 6). That is, the user rotates the pressing plate 82 in a direction away from the document cover 30, with the pressing plate rotation shaft 77 provided at the right end portion as a fulcrum. At this time, the document support member 97 moves from the first position S1 to the second position S2 in conjunction with the movement of the pressing plate 82.

[0092] As the protrusion 76 of the pressing plate 82 moves in a direction away from the bottom surface of the document cover 30, the connecting shaft 136 inserted through the through hole 79 of the protrusion 76 also slides to the right of the through hole 79. As the connecting shaft 136 moves, the document support member 97 disposed at a position facing the reading surface 120 of the second CIS 95 moves from the first position S1 to the second position S2. When the document support member 97 moves from the first position S1 to the second position S2, the document support member 97 is biased toward the first position S1 by the coil spring 132, so that the user supports the left end of the pressing plate 82 in an opening direction against the biasing force of the coil spring 132 to hold it at the fourth position S4.

[0093] When the pressing plate 82 is located at the fourth position S4, the document support member 97 is located at the second position S2, so that a space large enough for a user to insert his / her hand is formed between the document support member 97 and the reading surface 120 of the second CIS 95 (see FIG. 8). The user can use the space between the document support member 97 and the reading surface 120 of the second CIS 95 to perform maintenance work such as wiping the reading surface 120 of the second CIS 95 and the second document guide 133 with, for example, a cloth or the like to remove dirt adhering to the reading surface 120 and the second document guide 133.

[0094] After removing dirt adhering to the reading surface 120 and the second document guide 133, the user pushes back the pressing plate 82, and moves the pressing plate 82 from the fourth position S4 to the third position S3. That is, the user rotates the pressing plate 82 about the pressing plate rotation shaft 77 as a fulcrum and attaches it to the lower surface of the document cover 30. By attaching the pressing plate 82 to the lower surface of the document cover 30, the document support member 97 moves in conjunction with the pressing plate 82, moving from the second position S2 to the first position S1 (see FIGS. 5 and 6).

[0095] As the protrusion 76 of the pressing plate 82 moves in a direction approaching the bottom surface of the document cover 30, the connection shaft 136 inserted into the through hole 79 of the protrusion 76 also slides leftward of the through hole 79. The document support member 97 moves from the second position S2 to the first position S1 by the biasing force of the coil spring 132 (see FIG. 7). The document support member 97 that has moved to the first position S1 is positioned opposite the reading surface 120.

[0096] The user attaches the pressing plate 82 to the underside of the document cover 30, returns the document cover 30 to the closed position, and the second CIS 95 becomes ready to read the second side 52 of the document 12.

[0097] [Effects of the embodiment] According to this embodiment, when the pressing plate 82, which abuts against the platen glass 80 when the document cover 30 is in the closed position, is removed from the underside of the document cover 30, the document support member 97 facing the reading surface 120 of the second reading sensor 95 moves to the second position S2. This makes it easy to perform maintenance on the second reading sensor 95, such as cleaning the reading surface 120 of the second reading sensor 95.

[0098] Furthermore, according to this embodiment, the pressing plate 82 rotates around the pressing plate rotation shaft 77 provided to the right of the reading area 80A, and the document support member rotation shaft 131 is disposed to the left of the pressing plate rotation shaft 77. Therefore, the document support member 97 rotates at a larger angle than the pressing plate 82 with respect to the rotation of the pressing plate 82, making maintenance work for the second reading sensor 95 easy.

[0099] Furthermore, according to this embodiment, the document support member 97 can be positioned with high precision with respect to the reading surface 120 of the second reading sensor 95 at the first position S1.

[0100] [Variations] In the above embodiment, the mechanism for moving the document support member 97 from the first position S1 to the second position S2 has been described by taking the connecting member 68 constituted by the protruding piece 76 of the pressing plate 82 and the connecting shaft 136 as an example, but is not limited to this. The mechanism for moving the document support member 97 from the first position S1 to the second position S2 may be, for example, the following.

[0101] FIG. 9 is a perspective view showing the lower portion 38A of the document cover. FIG. 10 is an enlarged cross-sectional view of the periphery of the document support member 97. The scanner unit according to the modified example includes a pressing plate 82A that contacts the platen glass, and the pressing plate 82A is located on the lower surface of the document cover and is located below the second CIS 95 when the document cover is in the closed position. The pressing plate 82A has a first portion 138 and a second portion 139. A sponge portion 140 that connects the first portion 138 and the second portion 139 is provided on the lower surfaces of the first portion 138 and the second portion 139. The sponge portion 140 has a first sponge portion 141 and a second sponge portion 142. A reflecting portion 78A is provided on the lower surface of the sponge portion 140.

[0102] The first portion 138 is a flat member fixed to the lower surface of the document cover. The first portion 138 is engaged with the document cover by a locking arm 70A. The first portion 138 covers the right region of the lower portion 38A of the document cover from below. The first portion 138 has a first plate portion 143 and a first sponge portion 141. The first plate portion 143 has a rectangular shape that is long in the left-right direction 9. The first sponge portion 141 is provided in close contact with the lower surface of the first plate portion 143 so as to fit along the surface.

[0103] The second portion 139 is a flat member that can move between a third position S3 attached to the bottom surface of the document cover and a fourth position S4 detached from the bottom surface of the document cover. When the second portion 139 is in the third position S3, it is locked to the document cover by a locking arm (not shown). When the second portion 139 is in the third position S3, it covers the left region of the lower portion 38A of the document cover from below. The second portion 139 has a second plate portion 144, a second sponge portion 142, and a protruding piece 76A.

[0104] The second plate portion 144 is a rectangular plate member that is long in the front-rear direction 8. The second plate portion 144 has the same length as the first plate portion 143 in the front-rear direction 8. The second sponge portion 142 is provided in close contact with the lower surface of the second plate portion 144 so as to fit along the lower surface.

[0105] A pair of protrusions 76A are provided at the front end and the rear end of the second plate portion 144. The pair of protrusions 76A, 76A are each provided so as to protrude upward from the second plate portion 144. A rectangular through hole 79A is provided in each of the pair of protrusions 76A, 76A.

[0106] The sponge portion 140 is flexible. The sponge portion 140 bends at the boundary between the first sponge portion 141 and the second sponge portion 142 as the second portion 139 moves from the third position S3 to the fourth position S4.

[0107] As shown in FIG. 10, the document support member 97A of the multifunction machine 1 according to the modified example is provided in the second portion 139. The document support member 97A has a document support main body 130, a document support member rotating shaft 131, a coil spring 132, and a second document guide 133. The document support member 97A has a connection shaft 136 on the left side. The connection shaft 136 is inserted into the through hole 79A of the protruding piece 76A of the second portion 139. The connection shaft 136 rotatably supports the first portion. The other configurations of the document support member 97A are the same as those of the above-described embodiment.

[0108] FIG. 11 is an enlarged cross-sectional view showing a state in which the document support member 97A is in the second position S2 and the pressing plate 82A is in the fourth position S4.

[0109] 10 and 11, the original support member 97A is movable between a first position S1 facing the reading surface 120 and a second position S2 away from the reading surface 120. The original support member 97A is rotatable around an original support member rotation shaft 131. The original support member 97A is fixed on a second plate portion 144 of the second portion 139, and rotates together with the second portion 139.

[0110] [Maintenance of the second CIS95 related to the modification] In the multifunction peripheral according to the modified example, the user performs the maintenance of the second CIS 95 in the following procedure. The user opens the document cover in the P1 direction (see FIG. 2) and moves the document cover to the open position to expose the pressing plate 82A. The user pulls out the left end of the exposed second portion 139 of the pressing plate 82A toward himself and moves the first portion from the third position S3 to the fourth position S4 (see FIG. 9). That is, the user rotates the second portion 139 in a direction away from the document cover, with the document support member rotation shaft 131 provided at the right end portion of the document support member 97A as a fulcrum. At this time, the document support member 97 moves from the first position S1 to the second position S2 together with the rotation of the second portion 139.

[0111] When the second portion 139 of the pressing plate 82A moves in a direction away from the bottom surface of the document cover, the document support member 97A fixed to the second portion 139 also moves from the first position S1 to the second position S2. When the document support member 97A moves from the first position S1 to the second position S2, the document support member 97A is biased toward the first position S1 by the coil spring 132, so that the user supports the left end portion of the pressing plate 82 in the opening direction against the biasing force of the coil spring 132, and holds it at the fourth position S4.

[0112] When second portion 139 is located at fourth position S4, document support member 97A is located at second position S2, so that a space large enough for a user to insert his / her hand is formed between document support member 97A and reading surface 120 of second CIS 95 (see FIG. 11). With second portion 139 still supported at fourth position S4, the user can perform maintenance work on second CIS 95 by wiping reading surface 120 and second document guide 133 of second CIS 95 with, for example, a cloth or the like to remove dirt adhering to reading surface 120 and second document guide 133.

[0113] After removing dirt adhering to the reading surface 120 and the second document guide 133, the user pushes back the second portion 139 and moves the second portion 139 from the fourth position S4 to the third position S3. That is, the user rotates the second portion 139 about the document support member rotation shaft 131 as a fulcrum and attaches it to the underside of the document cover. By attaching the second portion 139 to the underside of the document cover, the document support member 97 also moves from the second position S2 to the first position S1.

[0114] When second portion 139 of pressing plate 82A moves in a direction approaching the bottom surface of the document cover, document support member 97A fixed to second portion 139 also moves from second position S2 to first position S1 (see FIG. 10). Document support member 97A moves from second position S2 to first position S1 due to the biasing force of coil spring 132. Document support member 97A that has moved to first position S1 is positioned at a position facing reading surface 120.

[0115] The user attaches the second portion 139 to the underside of the document cover and returns the document cover to the closed position, enabling the second CIS 95 to read the second side 52 of the document 12 .

[0116] [Effects of modified examples] The pressing plate 82 has a second portion 139 that is movable between a third position S3 and a fourth position S4, and when the second portion 139 is in the third position S3, the document support member 97 is in the first position S1, and when the second portion 139 is in the fourth position S4, the document support member 97 is in the second position S2. Therefore, the document support member 97 can be moved to the second position S2 simply by rotating the second portion 139. As a result, the rotation of the pressing plate 82 does not require a large force, and maintenance work for the second reading sensor 95 can be performed.

[0117] It should be noted that the conveying mechanism 16 has been described as having an intake roller 164, an intake nip piece 165, a separation roller 166, a separation nip piece 167, a second conveying roller 168, a second pinch roller 169, a third conveying roller 171, and a third pinch roller 172 as an example, but the conveying mechanism 16 may have other configurations.

[0118] In addition, the ADF 5 employs a so-called bottom-feeding format in which the original 12 is transported in a transport direction 17 from the ADF original tray 33 arranged at the lower level in the original cover 30 to the ADF discharge tray 34 arranged at the upper level, but the ADF 5 may also employ a so-called top-feeding format in which the original 12 is transported in the opposite direction.

[0119] Furthermore, the number and arrangement of various rollers constituting the transport mechanism 16 in the ADF 5 are merely an example, and needless to say may be changed as appropriate.

[0120] Furthermore, the original support member 97 has a coil spring 132 which biases the original support main body 130 toward the first position S1, but the original support member 97 does not necessarily have to have the coil spring 132, and may not have the coil spring 132. In other words, the original support member 97 may not bias the original support main body 130 toward the first position S1.

[0121] In addition, the through hole 79 has been described as being formed in a rectangular shape that is long in the longitudinal direction of the pressing plate 82, but the shape is not limited to a rectangle as long as the connecting shaft 136 of the document support member 97 slides along the longitudinal direction of the plate portion 74. For example, the connecting shaft 136 may be a long groove that extends along the longitudinal direction of the pressing plate 82. In addition, the connecting shaft 136 may be configured to be removable from the through hole 79. [Explanation of symbols]

[0122] 3. Reading device (scanner section) 16. Transport mechanism 30. Manuscript cover 68... Connection member 77···Pressure plate rotating shaft (rotating shaft) 82, 82A...Press plate 80···Platen glass 80A... Reading area (reading position) 85 1st CIS (moving reading sensor) 95 Second CIS (reading sensor) 97, 97A: Document support member 131 Document support member pivot shaft (pivot shaft) 132... Coil spring (elastic member) 151...Transport path 120... Reading surface 138...Part 1 139...Second part

Claims

1. a platen glass on which a document is placed; a document cover that is movable between an open position and a closed position with respect to the platen glass and covers the platen glass when in the closed position; a transport mechanism provided in the document cover and configured to transport a document along a transport path; a reading sensor provided in the document cover for optically reading the document conveyed along the conveying path; a moving reading sensor located below the platen glass, moving to a reading position on the transport path to optically read the document transported on the transport path; a document support member that is located opposite to the reading surface of the reading sensor across the transport path and is movable between a first position opposite to the reading surface and a second position away from the reading surface; a pressing plate located on the underside of the document cover, which is located below the reading sensor in the closed position and comes into contact with the platen glass, and which is movable between a third position attached to the underside of the document cover and a fourth position detached from the underside; a linking mechanism for moving the document support member from the first position to the second position in association with the movement of the pressing plate from the third position to the fourth position, the pressing plate is located to the right of the reading position in a left-right direction, and is movable to the third position and the fourth position by rotation about a rotation axis along a front-rear direction perpendicular to the left-right direction, the document support member is movable between the first position and the second position by rotation about a rotation axis along the front-rear direction, The reading device, wherein the rotation axis of the document support member is disposed to the left of the rotation axis of the pressing plate in the left-right direction.

2. 2. The reading device according to claim 1, wherein the interlocking mechanism has a connecting member that connects a rotation tip side of the document support member and the pressing plate.

3. 3. The reading device according to claim 1, further comprising an elastic member for urging said document supporting member toward said first position.

4. a platen glass on which a document is placed; a document cover that is movable between an open position and a closed position with respect to the platen glass and covers the platen glass when in the closed position; a transport mechanism provided in the document cover and configured to transport a document along a transport path; a reading sensor provided in the document cover for optically reading the document conveyed along the conveying path; a moving reading sensor located below the platen glass, moving to a reading position on the transport path to optically read the document transported on the transport path; a document support member that is located opposite to the reading surface of the reading sensor across the transport path and is movable between a first position opposite to the reading surface and a second position away from the reading surface; a pressing plate located on the lower surface of the document cover, the pressing plate being located below the reading sensor in the closed position and in contact with the platen glass; the transport mechanism has a plurality of rollers positioned on the transport path, the roller is not located between the reading sensor and the reading position, The pressure plate is a first portion fixed to a lower surface of the document cover; a second portion movable between a third position attached to the bottom surface of the document cover and a fourth position detached from the bottom surface; The document support member is provided in the second portion, and the reading device is in the first position when the second portion is in the third position, and is in the second position when the second portion is in the fourth position.

Images