JP2011248146A - Picture pickup apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a picture pickup apparatus improved in the operability of opening and closing the lid member in a relatively simple structure.SOLUTION: In a picture pickup apparatus comprising an apparatus body having a picture pickup section that picks up the image of a copy via a copy mounting face on which the copy is to be mounted and a lid member that is connected to one end of the apparatus body and covers the copy mounting face, the lid member has a front lid and a rear lid connected to each other and is disposed to be foldable near the connecting part between the front lid and the rear lid in a direction in which the faces of contact with the copy mounting face approach each other, and the lid member in the folded state is in an erect posture in which the tip of the front lid is in contact with the upper face of the apparatus body and that contact position is closer to the other end side of the apparatus body than the connecting part between the front lid and the rear lid.

Description

  The present invention relates to an image reading apparatus for reading an image of a document made of, for example, a sheet material such as paper or a booklet.

  2. Description of the Related Art Conventionally, a flat bed scanner (hereinafter referred to as FB) that scans a carriage as an image reading unit along an original surface and reads an image of the original is known (for example, see Patent Document 1). In such a conventional FB, a document cover is provided for covering the document placed on the document table and pressing the document against the document table, and the document cover rotates around a rotation shaft at the rear end of the main body. It is configured to be held in an open position that can be rotated by a predetermined angle.

JP 2000-224359 A

  In the image reading apparatus disclosed in Patent Document 1 described above, when a small-size document is set on the document table, only a part of the document cover is lifted to reduce the load of lifting the entire document cover. Yes.

  The structure disclosed in Patent Document 1 has the following problems. For example, when a small-size document is set, the document cover can be easily opened and closed only on the front end side. However, when a large-size document is set, it is necessary to lift the entire document cover, and the document cover opening / closing operation differs depending on the document size. For this reason, there is a problem that the opening / closing operability of the document cover is poor. Further, when a relatively large size original such as a booklet is read, there is a problem that the opening / closing operability of the original cover is poor even when the entire original cover is lifted.

  An object of the present invention is to provide an image reading apparatus having a relatively simple structure and improved opening / closing operability of a lid member.

  In order to achieve the above object, an image reading apparatus of the present invention is connected to an apparatus main body having an image reading section for reading an image of a document via a document placement surface on which the document is placed, and one end of the apparatus body. And a lid member for covering the document placement surface, the lid member having a front lid and a rear lid connected to each other, and the document placement surface in the vicinity of the connecting portion of the front lid and the rear lid The front end portion of the front lid is in contact with the upper surface of the apparatus main body and the contact position thereof is the front lid and the rear in the folded state of the lid member. The standing posture is located on the other end side of the apparatus main body with respect to the connection portion of the lid.

  According to the present invention, it is possible to improve the opening / closing operability of the lid member when reading an image of a document.

1 is a schematic cross-sectional view showing a flat bed scanner according to an embodiment of the present invention. 1 is a schematic perspective view illustrating a configuration of a flat bed scanner according to an embodiment. The schematic sectional drawing which shows the structure of the opening-and-closing lid of one Embodiment. The schematic bottom view which shows the structure of the opening-and-closing lid of one Embodiment. The schematic sectional drawing which shows the structure of the opening-and-closing lid of one Embodiment. The schematic bottom view which shows the structure of the opening-and-closing lid of one Embodiment. The schematic sectional drawing which shows the state which folded the opening-and-closing lid of one Embodiment. The schematic sectional drawing which shows the structure of the opening-and-closing lid | cover of the modification of one Embodiment. The schematic sectional drawing which shows the state which hold | maintained the opening / closing lid of one Embodiment in parallel. FIG. 3 is a schematic cross-sectional view in which a thick original is set under the opening / closing lid according to the embodiment. Schematic which shows the connection part of the opening / closing door and scanner main body of one Embodiment. The schematic sectional drawing which shows the folding holding | maintenance structure of the opening-and-closing lid of one Embodiment. The C arrow directional view of Drawing 12 showing the composition of the opening-and-closing lid of one embodiment. The C arrow directional view of Drawing 12 showing the composition of the opening-and-closing lid of the modification of one embodiment. The schematic sectional drawing which shows the structure of the background board of one Embodiment. The schematic sectional drawing which shows the structure of the background board of one Embodiment. The schematic sectional drawing which shows the structure of the background board of other embodiment. The schematic top view which shows the structure of the lock member of other embodiment. The schematic top view which shows the structure of the lock member of other embodiment. The schematic sectional drawing which shows the structure of the opening / closing lid | cover of other embodiment. The figure which shows the state which folded the opening-and-closing lid of one Embodiment, and set the original. The figure which shows the image obtained in the state of FIG. Schematic which shows the connection part of the opening / closing door and scanner main body of other embodiment.

  Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the drawings.

  1 to 7, 9 to 13, 15, and 16 are configuration diagrams of an embodiment of a flatbed scanner (hereinafter referred to as FB) as an example of the image reading apparatus of the present invention, and FIGS. It is a block diagram of the modification of one Embodiment.

  As shown in FIG. 1 and FIG. 2, the FB 1 of the present embodiment has a document D placed on a document table glass (document table) 11 provided on the upper part of the lower unit 10, and covers the document D with an opening / closing lid 20. The image of the document D is read by scanning a carriage 40 (including a document reading sensor such as a CCD [Charge Coupled Device] which is an example of an image reading unit) provided in the main body of the flat bed scanner in the direction of the arrow x. Device.

  In this embodiment, the opening / closing lid 20 that can be opened and closed with respect to the main body of the flat bed scanner is divided into two in the longitudinal direction (depth direction of the main body of the flat bed scanner: scanning direction).

  The opening / closing lid 20 is a member that covers the document table glass 11 and the document D placed on the document table glass 11. For example, in the present embodiment, such an opening / closing lid 20 is divided into a front lid 21 and a rear lid 22 at a substantially central portion in the longitudinal direction, and the front lid 21 and the rear lid 22 are shaft portions 21a (connection portions). It is connected to be rotatable. Further, the opening / closing lid 20 is supported by a shaft portion 22b so that the rear lid 22 can rotate with respect to a hinge member 23 as a connecting member movable in the arrow y direction. The hinge member 23 will be described in detail later.

  In this embodiment, the opening / closing lid 20 is a contact surface of the front lid 21 and the rear lid 22 with the document D (a surface in contact with the document D and closed), as will be described in detail later by adopting such a structure. The surface facing the platen glass 11 in a state can be folded in a direction approaching each other. Thereby, the opening / closing operability of the opening / closing lid 20 and the safety in use can be improved. Further, in the present embodiment, although details will be described later, even if the opening / closing lid 20 is folded, the opening / closing lid 20 is not tilted and is devised so as to maintain a standing posture.

  3 to 6 are diagrams showing the configuration of the opening / closing lid 20. As shown in FIGS. 3 to 6, the front lid 21 includes an operation lever (operation member) 211 that is provided at the front end of the front lid 21 and that can rotate around a shaft portion 21 d, and an arrow p in conjunction with the operation lever 211. A lock member (holding member) 212 that can move in the direction (the direction of the second position), and the lock member 212 is biased in a direction opposite to the arrow p direction (the direction of the first position) with a predetermined biasing force. And a compression spring 213.

  With the above configuration, when the user rotates the operation lever 211 in the direction of the arrow q by the operation of grasping the handle portion 21b of the front lid and the handle portion 211a of the operation lever as shown in FIG. Then, the lock member 212 moves in the direction of the arrow p, and the engagement between the lock member 212 and the rear cover 22 is released as shown in FIG.

  Thereafter, when the front lid 21 is pushed backward (in the direction opposite to the arrow p) while rotating in the direction of the arrow r, the opening / closing lid 20 is folded as shown in FIG. For example, in the present embodiment, the front lid 21 and the rear lid 22 are rotatable by the shaft portion 21a in the vicinity of the connection portion between the front lid 21 and the rear lid 22, and the rear lid 22 is rotated by the shaft portion 22b. The part can be freely rotated.

  As described above, the opening / closing lid 20 has the shaft portion 22b, which is a connecting portion between the rear lid 22 and the main body, as a fulcrum, and the front lid 21 is raised to the rear lid 22 while the rear lid 22 rises with respect to the document table glass 11. It is movable in the approaching direction. Thus, by pushing the front lid 21 of the opening / closing lid 20 in the direction of the arrow r, the opening / closing lid 20 can be folded in a direction in which the contact surfaces of the front lid 21 and the rear lid 22 with the document D approach each other. In the present embodiment, the front lid 21 is provided so as to be foldable only in the direction approaching the document contact surface of the rear lid 22. However, the front lid 21 may be opened and closed upward from the state shown in FIG. As a result, a small document can be set on the front side of the apparatus by opening / closing only the front lid 21.

  Further, in the present embodiment, in the folded state of the opening / closing lid 20 shown in FIG. 7, the contact position where the front end portion of the front lid 21 contacts the upper surface of the lower unit 10 is more than the position of the shaft portion 21a. The lower unit 10 is provided so as to be located at the other end (the left end in FIG. 7). That is, in the folded state of the opening / closing lid 20, the contact position of the front lid 21 with respect to the lower unit 10 is located on the end side opposite to the connection position with the opening / closing lid 20 of the lower unit 10 relative to the shaft portion 21a. It is supposed to be. At this time, the opening / closing lid 20 folded on the lower unit 10 becomes an upright posture and is substantially stabilized. In this embodiment, the opening / closing lid 20 has a structure that cannot be folded more than a certain degree. For example, the document contact surfaces of the front cover 21 and the rear cover 22 of the opening / closing cover 20 are folded so that they do not contact each other, and are not folded any further. Thereby, excessive folding can be prevented and the folded state of the open / close lid 20 can be stabilized.

  Further, when the opening / closing lid 20 is deformed from the folded state (the state shown in FIG. 7) to the flat state (the state shown in FIG. 2), the front end of the front lid 21 contacting the lower unit 10 is substantially the opening / closing lid 20. Therefore, it is possible to effectively prevent the opening / closing lid 20 from being pulled out from the lower unit 20 and coming off as a base point in the rotational direction. Further, each contact surface of the front lid 21 and the rear lid 22 with the document D serves as a background when reading an image of the document, as will be described in detail later. For this reason, by preventing the contact surfaces of the front lid 21 and the rear lid 22 from contacting each other, it is possible to prevent damage such as scratches and to read an image in a good state. .

  When the opening / closing lid 20 is folded in this manner, the folded opening / closing lid 20 is in a substantially upright state on the platen glass 11 (in a standing posture standing in a direction substantially perpendicular to the surface direction of the platen glass 11). State), and this state is substantially maintained. At this time, the rotation direction of the operation lever 211 (arrow q) and the rotation direction of the front lid 21 (arrow r) are the same in the direction in which the front lid 21 is counterclockwise in FIGS. Therefore, the user can perform the folding operation of the opening / closing lid 20 by simply pushing the handle portion 21b and the handle portion 211a shown in FIGS.

  When returning from the folded state to the original state, if the front lid 21 is pulled back by grasping the handle portion 21b and the handle portion 211a, the inclined surface 212a of the lock member 212 is pushed into the front end of the rear lid 22 to lock the lock member 212. Retracts into the front lid 21. When the opening / closing lid 20 extends in parallel, the lock member 212 is moved to a position where it engages with the rear lid 22 by the compression spring 213, and the opening / closing lid 20 is in a parallel holding state. On the other hand, instead of the folding operation, an opening / closing operation of lifting the handle portion 21b in a parallel holding state (parallel state) in which the opening / closing lid 20 extends in parallel as shown in FIG. 9 can also be performed. At this time, when the thick original B is set as shown in FIG. 10, the thick original B can be pressed by the entire opening / closing lid 20 by raising the hinge member 23 as a connecting member, and the image quality is improved. Can do.

  Here, in this embodiment, as shown in FIG. 11A and FIG. 11B, the hinge member 23 is opposed to the engagement hole 11a provided at the end of the lower unit 10 that is the apparatus main body. It will be detachably engaged. Engaging claws 231 serving as claw-shaped flanges projecting outward in the width direction are provided on both sides of the hinge member 23 in the width direction.

  In addition, a slit 233 is formed at one end of the hinge member 23 leaving a fragile portion 232 having a predetermined width, and one engaging claw 231 is provided at the distal end portion of the fragile portion 232. Thereby, the hinge member 23 becomes detachable with respect to the engagement hole 11a by elastically deforming the fragile portion 232 including the one engagement claw 231 toward the slit 233 to reduce the width dimension of the hinge member 23. .

  The engaging portion 230 attached to the engaging hole 11a is fragile because the engaging claw 231 engages with the opening-side edge of the engaging hole 11a so that the hinge member 23 cannot be removed from the engaging hole 11a. The engagement state between the hinge member 23 and the engagement hole 11a is released by elastically deforming the portion 232 toward the slit 233 to reduce the width of the hinge member 23.

  Further, the engagement hole 11a of the lower unit 10 is formed with a depth dimension such that the end of the hinge member 23 can be inserted and moved up and down to some extent. And the engaging claw 231 is provided in the front end side of the hinge member 23, and the part which this engaging claw 232 engages in is provided in the edge part by the side of the opening of the engagement hole 11a. For this reason, the hinge member 23 is slidable in the depth direction of the engagement hole 11a of the lower unit 10, and the engagement claw 231 abuts on the opening side edge of the engagement hole 11a. It will not fall out of 11a.

  Furthermore, the lower unit 10 and the opening / closing lid 20 are connected to a plurality of locations on one end side of the opening / closing lid 20, for example, two hinge members 23 in the present embodiment. And the adjacent hinge member 23 is arrange | positioned so that the weak part 232 of one hinge member 23 and the engaging claw 231 on the opposite side to the weak part 232 side of the other hinge member 23 may oppose. Thereby, the attachment / detachment work of the opening / closing lid 20 from the lower unit 10 becomes easy. This is because when the opening / closing lid 20 is attached / detached, for example, the opening / closing lid 20 is tilted with respect to the lower unit 10 to elastically deform the fragile portions 232 of the pair of hinge members 23 in the same direction, thereby This is because a sufficient gap for attachment / detachment can be secured at the same time between the member 23 and each of the corresponding engagement holes 11a.

  In this embodiment, the foldable opening / closing lid 20 has been described as an example. However, the hinge member is detachable with respect to the engagement hole 11a and is slidable in the depth direction of the engagement hole 11a. 23, the opening / closing lid 20 and the lower unit 10 are connected to each other. Therefore, the opening / closing operation of the opening / closing lid 20 can be improved without the opening / closing lid 20 being detached from the lower unit 10 by the opening / closing operation of the opening / closing lid 20. it can.

  In this embodiment, when the booklet or the like having a thickness larger than that of a single sheet is read in a spread state, the hinge member 23 slides upward, so that the opening / closing lid 20 is pulled out from the lower unit 10. Can be prevented.

  Furthermore, in this embodiment, for example, even if the opening / closing lid 20 is not in an upright state, the booklet can be pressed substantially horizontally by the opening / closing lid 20 as long as it is within the slide movement range of the hinge member 23. In addition, since the opening / closing lid 20 of the present embodiment is a folding method, reading can be performed without bringing the opening / closing lid 20 into an upright state, and the fall / opening of the opening / closing lid 20 can be prevented while improving the opening / closing operability. Can do.

  Further, as shown in FIG. 7, the shaft portion 21 a is provided at a position separated from the boundary between the front lid 21 and the rear lid 22 by a predetermined distance l forward. Thereby, when opening and closing the opening / closing lid 20, the front lid 21 and the rear lid 22 can be configured not to interfere with each other. As a modification of the relationship between the boundary between the shaft portion 21a and the opening / closing lid 20, as shown in FIG. 8, the shaft portion 21a is positioned rearward from the boundary between the front lid 21 and the rear lid 22 by a predetermined distance l ′. Even if it is the structure provided in, the same effect is acquired. As shown in FIG. 7, the distance m between the shaft portion 21a and the front end of the front lid 21 is set shorter than the distance n between the shaft portion 21a and the shaft portion 22b (the rear end portion of the rear cover 22). Since the shorter one is easier to rotate, the opening / closing operation of the opening / closing lid 20 can be facilitated by making m as small as possible.

  FIG. 12 is a diagram showing a configuration for holding the opening / closing lid 20 in a folded state, and FIG. 13 is a view taken in the direction of arrow C in FIG. As shown in FIGS. 12 and 13, claw-shaped portions 21 e are provided on the left and right of the front end of the front lid 21, and a concave-shaped portion 10 a is provided on the upper surface side of the lower unit 10. Thereby, when the opening / closing lid 20 is folded, the claw-shaped portion 21e is engaged with the recessed shape portion 10a, and the folded state of the opening / closing lid 20 is maintained.

  In addition, an inclined surface 10aa is provided around the concave shape portion 10a, and the claw shape portion 21e can be easily fitted into the concave shape portion 10a. Further, a rail-shaped portion 10b is provided on the upper surface side of the lower unit 10, and when the opening / closing lid 20 is folded, the claw-shaped portion 21e moves while being guided by the rail-shaped portion 10b. As a result, the opening / closing lid 20 can be folded straight along the rail-shaped portion 10b, the opening / closing lid 20 does not swing sideways, and the opening / closing operation is facilitated, and the area around the rail-shaped portion 10b is prevented from being damaged. it can.

  As a modification, in the case where the opening / closing lid 20 has sufficient strength and little lateral vibration, a configuration without the rail-shaped portion 10b as shown in FIG. 14 may be used. In FIG. 14, an inclined surface 10aa is provided so as to surround the concave shape portion 10a, and the claw shape portion 21e is easily fitted into the concave shape portion 10a.

  As shown in FIG. 13, the front end of the front lid 21 has a concave shape 21 h in which the area facing the document table glass 11 is retracted in the folded state of the opening / closing lid 20. Even when the open / close lid 20 is folded, an opening having a predetermined height can be formed between the front end of the front lid 21 and the document table, and the document can be inserted into the opening. Therefore, even if the opening / closing lid 20 is in the half-opened state, the user can easily set a thick original or the like on the original table without being in the way. Even if there is a document set when the opening / closing lid 20 is to be returned from the folded state, it can be closed without hitting the document.

  FIG. 15 and FIG. 16 are configuration diagrams of a background plate as a background of the image. As shown in FIGS. 15 and 16, on the lower unit 10 side of the front lid 21 and the rear lid 22, sponges 21f and 22f for pressing the document, and background plates 21g (front background plates) and 22g serving as backgrounds for the images are provided. (Back background plate) and abutting portions 21h and 22h where the front lid 21 and the rear lid 22 collide with each other at the limit of movement of the opening / closing lid 20 in the folding direction are provided.

  Thereby, when the opening / closing lid is folded until the butting portions 21h and 22h come into contact with each other, the background plates 21g and 22g can be configured not to interfere with each other. If the shaft portion 21a is provided near the boundary between the front lid 21 and the rear lid 22, the background plates 21g and 22g may collide and hurt in the folding operation, so by providing such abutting portions 21h and 22h, Can prevent it.

  As shown in FIG. 16, the front end portion of the rear lid 22 is configured such that the background plate 22g protrudes from the sponge 22f. As shown in FIG. 15, the protruding portion of the background plate 22g overlaps the background plate 21g. That is, in the state where the opening / closing lid 20 is not folded, the end portions of the background plate 21g and the background plate 22g overlap each other at the connection portion between the front lid 21 and the rear lid 22.

  This eliminates the seam on the background plate, prevents the seam from being reflected in the image background, and prevents the interference of components. In the conventional technique (Patent Document 1), when a small-size document is set on the document table, only a part of the document cover is lifted, and therefore, there is a possibility that the dividing line of the document cover may be seen in the image background. . On the other hand, in the present embodiment, since the background plate has no seam, the seam does not appear in the document background. Therefore, the opening / closing operability of the opening / closing lid 20 and the safety in use can be improved without degrading the image quality.

  In the present embodiment, the configuration in which the background plate 22g protrudes has been described. However, the present invention is not limited thereto, and the same effect can be obtained even in the configuration in which the rear end of the background plate 21g protrudes. In order to prevent interference of components, the shaft portion 21a as shown in FIG. 8 is configured to be shifted rearward from the boundary between the front lid 21 and the rear lid 22, and the rear end of the background plate 21g in a state where the opening / closing lid is held in parallel. It is necessary to have a configuration that overlaps with the background plate 22g.

  Moreover, although the background plate of either one of the front lid 21 or the rear lid 22 has been described as projecting, the present invention is not limited to this, and at least one background plate of the front lid 21 or the rear lid 22 is configured to project as described above. I just need it.

  Next, the concave shape 21h formed at the front end of the front lid 21 shown in FIG. 13 will be described in more detail.

  As described above, the concave shape (concave portion) 21h creates an opening having a predetermined height between the front end of the front lid 21 and the document table even when the opening / closing lid 20 is in the folded state. This is so that a manuscript can be inserted. The convex portions on both sides of the concave shape 21 h serve as contact portions with respect to the upper surface of the upper unit 10.

  However, such a structure causes the following problems. In the present embodiment, the background plates 21f and 21g serving as the image background described above are black.

  Here, consider a case where the front lid 21 and the rear lid 22 are folded as shown in FIG. At this time, for example, when the inner surface of the recess 21h is white, for example, and the document D is also white, the image shown in FIG. 22 is obtained. In this case, since the white color of the document D and the white surface of the front end portion 21h exist, even if an image size is detected by white (the automatic size detection function), it cannot be accurately cut out.

  Therefore, in this embodiment, the front end surfaces 21h, 21i, and 21j of the front lid 21 shown in FIG. 2 are painted in black or a color close to black. With such a configuration, when the opening / closing lid 20 is folded, the front end surfaces 21h, 21i, 21j of the opening / closing lid are not reflected in the image background, thereby preventing a failure in automatic size detection.

  In the above description, the front end surfaces 21h, 21i, and 21j have been described as being painted in black or a color close to black. However, the present invention is not limited to this. The front end surfaces 21h, 21i, and 21j may be configured by separate black parts instead of being painted, or the same effect can be obtained even if the front lid 21 is entirely black.

(Other embodiments)
In the above-described embodiment, the configuration having two background plates (21g, 22g) has been described. However, the configuration is not limited thereto, and a configuration having only one background plate may be used. In this case, as shown in FIG. 17, the folded state is a gap between the rear end of the front lid 21 and the front end of the rear lid 22, and the background plate 20g is bent with a curvature within a range in which the background plate 20g can be bent. However, the background plate 20g can be prevented from being crushed by restricting it from being bent further.

  Further, in the above-described embodiment, the configuration in which the lock member 212 is moved in conjunction with the operation lever 211 and the opening / closing lid 20 is released from the parallel holding state extended in parallel has been described. There may be no configuration. As shown in FIGS. 18 and 19, a lock member 30 that engages with the front lid 21 when moved in the direction of the arrow p is provided, and the lock member 30 is moved by the user's operation so that the opening / closing lid 20 is held in parallel. And a foldable state can be switched, the number of parts is reduced and the cost can be reduced. Although the configuration in which the lock member 30 engages with the front lid 21 has been described, the configuration is not limited thereto, and the configuration in which the lock member 30 engages with the rear lid 22 or a configuration that moves in a direction other than the direction of the arrow p may be used.

  In the above-described embodiment, the operation lever 211 that rotates is described. However, the present invention is not limited thereto, and the operation lever portion 212b is directly provided on the lock member 212 as shown in FIG. May be. In this case, the operation direction of the operation lever portion 212b is the arrow p direction. Even in this configuration, the number of parts can be reduced, and the cost can be reduced.

  Further, in the above-described embodiment, the description has been given of the configuration that requires the operation of rotating the front lid 21 by hand when the opening / closing lid 20 is folded. However, in order to facilitate the rotation operation, the opening / closing lid is folded. A biasing member such as a spring for biasing in the direction may be provided.

  As described above, according to the flatbed scanner of the above-described embodiment, the opening / closing operation can be performed by folding the opening / closing lid. Therefore, for example, when the user is used while sitting on a chair, the opening / closing operation is easy. Can be. In addition, even when the open / close lid is in an open state, it can be held in a safe state, and a gap in the vicinity of the connection portion (boundary portion) between the front lid and the rear lid can be eliminated. The reflection of the boundary line can be prevented.

  As mentioned above, although this invention was demonstrated based on one Embodiment, this invention is not limited to one Embodiment mentioned above. For example, in the above-described embodiment, the example in which the respective weak portions are arranged so as not to face each other in the pair of adjacent hinge members has been described. You may make it provide a weak part in the position which opposes.

  In the above-described embodiment, the folding lid 20 is illustrated as an example, and the opening / closing lid 20 and the lower unit 10 are connected by a hinge member. However, the present invention is not limited to this example. In addition, the open / close lid that cannot be folded and the lower unit may be connected by a connecting member.

  Furthermore, in the above-described embodiment, an image reading apparatus that reads an image of a document by scanning a carriage equipped with a document reading sensor as an example of an image reading unit along the document has been described. For example, the image reading unit may be a fixed type without scanning.

  In the above-described embodiment, the structure in which the opening / closing lid is divided into the front lid and the rear lid is illustrated as an example. However, the present invention is of course not limited thereto, and is divided into, for example, two or more divisions. Alternatively, as long as the opening / closing lid can be folded with good opening / closing operability, the members constituting the opening / closing lid may not be divided.

  Further, in the above-described embodiment, the weakened portion 232 is provided only at one end portion of each hinge member 23, and the engaging claw 231 is provided in the weakened portion 232. However, the present invention is not limited to this, of course, For example, as shown in FIG. 23, the weakened portions 232 may be provided at both ends of the hinge member 23A as the connecting member, and the locking claws 231 may be provided at the respective weakened portions 232, respectively. Even in this case, since the fragile portion 232 is elastically deformed, the hinge member 23 </ b> A can be attached to and detached from the lower unit 10.

  Furthermore, in the above-described embodiment, the flat bed scanner is exemplified as an example of the image reading apparatus. However, the present invention is not limited to this, and an apparatus including an image reading apparatus (image reading unit), for example, The present invention may be applied to various processing apparatuses such as copying machines and multifunction machines.

B Thick Document D Document 1 Flatbed Scanner 10 Lower Unit 10a Concave Shaped Part 10aa Inclined Surface 10b Rail Shaped Part 11 Document Plate Glass 11a Engagement Hole 20 Opening / Closing Lid (Cover Member)
20f Sponge 20g Background plate 21 Front lid 21a Shaft portion 21b Handle portion 21d Shaft portion 21e Claw-shaped portion 21f Sponge 21g Background plate 21h Abutting portion 211 Operation lever 211a Handle portion 212 Lock member 212a Inclined surface 212b Inclined surface 213 Compression spring 22 Rear Lid 22b Shaft portion 22f Sponge 22g Background plate 22h Abutting portion 23 Hinge member (connection member)
30 Locking member 40 Carriage 231 Engaging claw 232 Fragile part 233 Slit

Claims (9)

An apparatus main body having an image reading unit that reads an image of a document through a document placement surface on which the document is placed, and a lid member that is connected to one end of the device body and covers the document placement surface. ,
The lid member has a front lid and a rear lid connected to each other, and is provided so as to be foldable in a direction in which contact surfaces with the document placement surface approach each other in the vicinity of the connection portion of the front lid and the rear lid,
In the folded state of the lid member, the front end portion of the front lid is in contact with the upper surface of the apparatus main body, and the contact position is located on the other end side of the apparatus main body with respect to the connection portion of the front lid and the rear lid. An image reading apparatus having a standing posture.   The lid member is connected to one end of the apparatus main body via a connection member, and the connection member is detachably engaged with an engagement hole provided in an end of the apparatus main body and the engagement hole. The image reading apparatus according to claim 1, wherein the image reading apparatus is provided so as to be movable in a depth direction.   The connection member is provided with engagement claws that engage with the engagement holes at both ends of the connection member, and one engagement claw is a weakened portion that is elastically deformed on one end side of the connection member. The image reading apparatus according to claim 2, wherein an engagement state between the connection member and the front engagement hole is released by elastic deformation of the fragile portion.   The apparatus main body and the lid member are connected by a plurality of connection members on one end portion side of the lid member, and adjacent connection members are the fragile portion of one connection member and the fragile portion side of the other connection member. 4. The image reading apparatus according to claim 2, wherein the engaging claw on the opposite side to the opposite side is disposed so as to face the engaging claw.   The lid member is divided into two parts, the front lid and the rear lid, at the center in the longitudinal direction of the lid member, and is foldable in the vicinity of the connection portion between the front lid and the rear lid. The image reading apparatus according to any one of claims 1 to 4.   The connecting portion for connecting the front lid and the rear lid so as to be foldable is disposed at a position separated by a predetermined distance from a boundary between the front lid and the rear lid. Item 6. The image reading apparatus according to any one of Items 1 to 5.   The image reading apparatus according to claim 6, wherein a distance from a front end portion of the front lid to the connection portion is shorter than a distance from the connection portion to a rear end portion of the rear lid.   The front lid is composed of a front background plate whose contact surface with the document is the background of the image, and the rear cover is composed of a rear background plate whose contact surface with the document is the background of the image, 8. The front background plate and the rear background plate overlap each other in the vicinity of the connecting portion between the front lid and the rear lid when the lid member is not folded. The image reading apparatus according to claim 1.   A concave portion corresponding to the document placement surface is provided on the front end portion side of the front lid. When the lid member is in a standing posture, the convex portions on both sides of the concave portion of the front lid are in contact with the upper surface of the apparatus main body. The image reading apparatus according to claim 1, wherein the image reading apparatus is a contact portion.

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