JP2005326547A - Image reader - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an image reader where an original platen is fixed without making the external size of a housing large. <P>SOLUTION: The image reader comprises the housing having an aperture at its upper wall part; the transparent original platen whose area is larger than the aperture and with which the aperture is covered from below; a pressing means having an intermediate member and a supporting part provided on the inner wall of the housing near one side of the original platen and constituted so that the intermediate member can be inserted between the supporting part and the original platen from a direction parallel with the above-mentioned one side or from the side of the original platen, and pressing the original platen to the upper wall part at least by either the intermediate member or the supporting part when the intermediate member is inserted; and a reading means housed in the housing for reading an original placed on the original platen and outputting a digital image. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an image reading apparatus.

2. Description of the Related Art Conventionally, image reading apparatuses such as image scanners and electronic copying machines are known as so-called flatbed types having a platen glass for placing a document on an upper surface of a box-shaped housing.
Among such image reading apparatuses, one that fixes a platen glass using a scanner cover is known (see, for example, Patent Document 1). The invention described in Patent Document 1 relates to a contact glass mounting device applied to an image reading apparatus. According to the contact glass mounting device described in Patent Document 1, a platen glass can be easily mounted.

As shown in FIG. 6, there is also known an image reading apparatus that fixes a platen glass 82 using an intermediate member 81. The intermediate member 81 in the illustrated example is screwed to a female screw portion 85 protruding from the lower surface side of the upper wall portion 84 of the casing near one side 83 of the platen glass 82, and supports the platen glass 82 from the lower side. It is.
In addition, a hook provided on the upper wall portion of the document table in the vicinity of one side of the document table, the intermediate member having a hook that can be slid into the document table from a position spaced from the document table, and the inserted intermediate member There is also a method of fixing the document table by the above.

JP-A-10-126542

However, according to the contact glass mounting device described in Patent Document 1, there is a problem that the manufacturing cost increases because two large parts called a scanner cover are used.
Since the image reading apparatus shown in FIG. 6 does not require a scanner cover, the image reading apparatus is less expensive than the contact glass mounting apparatus disclosed in Patent Document 1. However, in order to firmly fix the intermediate member 81, the female screw portion 85 needs to protrude from the upper wall portion 84 to a certain extent, so that there is a problem that the housing becomes larger in the height direction.

When the intermediate member is slid and inserted into the hook from a direction perpendicular to one side of the document table, an area for sliding the intermediate member on the lower surface of the upper wall portion of the document table is required, although it does not increase in the height direction. There is a problem that the housing becomes larger in the width direction.
The present invention has been created in view of such a problem, and an object of the present invention is to provide an image reading apparatus that fixes a document table without increasing the size of the housing.

  In order to achieve the above object, an image reading apparatus according to the present invention includes a housing having an opening in an upper wall portion, a transparent document table having a larger area than the opening and closing the opening from below, and an intermediate member. A support portion provided on an inner wall of the casing near one side of the document table, and the intermediate member is inserted between the support portion and the document table from a direction parallel to the one side or from the document table side A support unit capable of pressing, when the intermediate member is inserted, at least one of the intermediate member or the support unit is housed in the housing, and a pressing unit that presses the document table against the upper wall unit, Reading means for reading a document placed on the document table and outputting a digital image. According to this image reading apparatus, since the intermediate member is not screwed, the female screw portion is unnecessary, and the size in the height direction can be reduced. Further, since the intermediate member can be inserted from a direction parallel to one side or from the document table side, a space for sliding the intermediate member from the direction perpendicular to one side of the document table toward the document table is unnecessary, and the size in the width direction is reduced. Can be reduced. Therefore, according to this image reading apparatus, the document table can be fixed without increasing the size of the housing.

  Furthermore, in the image reading apparatus according to the present invention, the intermediate member has a first contact portion that contacts the lower surface of the upper wall portion and a second contact portion that contacts the lower surface of the document table, The support portion is configured such that the first contact portion is in contact with the lower surface of the upper wall portion, and the second contact portion is in contact with the lower surface of the document table. It can be inserted. When the first contact portion that contacts the lower surface of the upper wall portion is provided in the intermediate member, the support portion can support the intermediate member by holding the first contact portion with the upper wall portion. For this reason, when the support unit is viewed from above, there is no area overlapping with the document table or the area overlapping therewith can be small. This facilitates the work of attaching the document table.

  Furthermore, in the image reading apparatus according to the present invention, the intermediate member is an end portion of the first abutting portion, and is bent from one end portion in a direction parallel to the one side when the intermediate member is in the posture. An elastic portion that protrudes toward the upper wall portion and inclines toward the other end toward the opposite upper wall portion; when in the posture, the elastic portion abuts against the support portion and elastically deforms; Is pressed against the upper wall. According to this image reading apparatus, the document table can be more firmly fixed without increasing the size of the housing.

  Furthermore, in the image reading apparatus according to the present invention, the support portion has a first engagement portion, and the elastic portion engages with the first engagement portion when the intermediate member is inserted in the posture. A second engaging portion is provided. According to this image reading apparatus, the intermediate member can be positioned in a direction parallel to one side by engaging the first engaging portion and the second engaging portion.

  Furthermore, in the image reading apparatus according to the present invention, the elastic portion extends opposite to the one end portion across the second engagement portion, and is opposed to the support portion when the intermediate member is in the posture. A handle portion that does not cover the upper wall portion side is provided. According to this image reading apparatus, the document table can be easily removed by pushing the handle portion toward the upper wall portion.

Further, in the image reading apparatus according to the present invention, the intermediate member has a third contact portion that contacts the end surface of the one side of the document table when supported by the support portion. According to this image reading apparatus, the third contact portion contacts the end surface of the document table, so that the document table can be positioned in a direction orthogonal to the one side.
Furthermore, in the image reading apparatus according to the present invention, the support portion includes a contact portion that contacts the end surface of the one side of the document table. According to this image reading apparatus, the abutment portion abuts against the end surface of the document table, whereby the document table can be positioned in a direction orthogonal to the one side.

  Furthermore, in the image reading apparatus according to the present invention, the intermediate member has a fourth abutting portion that abuts an end surface that intersects an end surface of the one side of the document table when supported by the supporting portion. According to this image reading apparatus, the document table can be positioned in a direction parallel to the one side by the fourth contact portion contacting the end surface intersecting the end surface of the one side.

Hereinafter, the best mode for carrying out the present invention will be described based on examples.
FIG. 2A is a schematic diagram of an image scanner 1 as an image reading apparatus according to an embodiment of the present invention, and FIG. 2B is a block diagram of the image scanner 1. The image scanner 1 is a so-called flatbed image scanner having a document table 12 (hereinafter referred to as “platen glass”) on which a document M is placed in a substantially box-shaped housing 11. In FIG. 2, the support portion and the intermediate member are omitted.

  The document cover 13 is connected to the housing 11 so as to be swingable from a posture in which the platen glass 12 is opened by a hinge to a posture in which the platen glass 12 is covered. The document cover 13 presses the document M placed on the platen glass 12 and covers the platen glass 12 so that light other than the light emitted from the light source 15 does not illuminate the document M.

  The platen glass 12 is formed of a colorless and transparent glass plate or the like. The platen glass 12 has a larger area than the rectangular opening 22 formed in the upper wall portion 23 of the housing 11 and closes the opening 22 from below. There is a step between the upper surface of the platen glass 12 and the upper surface of the upper wall portion 23, and the document M is positioned by contacting the step surface.

  The linear image sensor 18 is mounted on the carriage 19 in such a manner that light receiving elements such as photodiodes are arranged in a straight line in the direction perpendicular to the paper surface (main scanning direction) in FIG. The linear image sensor 18 accumulates charges obtained by photoelectric conversion of light in a predetermined wavelength region such as visible light, infrared light, and ultraviolet light in a light receiving element for a certain period of time, and an electric signal corresponding to the amount of light received for each light receiving element. Is output using a CCD (Charge Coupled Device), a MOS transistor switch, or the like.

  The optical system 14 includes a light source 15, a mirror 16, a lens 17, and the like. The light source 15 is composed of a fluorescent tube lamp or the like. The mirror 16 and the lens 17 form an optical path for causing the linear image sensor 18 to form an optical image of the original M irradiated to the light source 15. As a result, an optical image of the original M on the main scanning line is formed on the linear image sensor 18.

The main scanning drive unit 24 is a drive circuit that outputs drive pulses necessary for driving the linear image sensor 18 to the linear image sensor 18. The main scanning drive unit 24 includes, for example, a synchronization signal generator, a drive timing generator, and the like.
The sub-scanning drive unit 25 includes a slide shaft 33 that is installed perpendicularly to the main scanning direction and slidably holds the carriage 19, a stepping motor 20, a drive belt 21, and a drive circuit. Since the stepping motor 20 pulls the carriage 19 with the drive belt 21, the linear image sensor 18 and the original M move relative to each other in the sub-scanning direction (α direction shown in FIG. 2A) orthogonal to the main scanning direction. A two-dimensional image can be scanned.

  The AFE (analog front end) unit 26 includes an analog signal processing unit, an A / D converter, and the like. The analog signal processing unit subjects the electrical signal output from the linear image sensor 18 to analog signal processing such as amplification and noise reduction processing, and outputs the result. The A / D converter quantizes the electrical signal output from the analog signal processing unit into an output signal in a digital representation having a predetermined bit length, and outputs the output signal.

  The digital image processing unit 27 performs processing such as gamma correction, interpolation of defective pixels by a pixel interpolation method, shading correction, image signal sharpening, color space conversion, and the like on the output signal output from the AFE unit 26 to perform digital processing. Output an image. The various processes performed by the digital image processing unit 27 may be replaced with processes by a computer program executed by the control unit 29.

The interface (I / F) unit 28 is configured based on a communication standard such as RS-232C, Bluetooth, or USB, and is communicably connected to a personal computer (PC) or the like.
The control unit 29 includes a CPU 30, a ROM 31 and a RAM 32. The CPU 30 executes computer programs stored in the ROM 31 to control each unit of the image scanner 1. The ROM 31 is a memory that stores various programs and data, and the RAM 32 is a memory that temporarily stores various programs and data. Various programs and data stored in the ROM 31 may be downloaded and stored from a predetermined server via a network, or may be read from a computer-readable storage medium such as a removable memory and stored.

The reading means described in the claims corresponds to the linear image sensor 18, the optical system 14, the main scanning drive unit 24, the sub-scanning drive unit 25, the AFE unit 26, the digital image processing unit 27, and the control unit 29.
Next, a support part is demonstrated.
FIG. 3 is a perspective view of the lower surface side of the upper wall portion 23. In FIG. 3, the X direction is the main scanning direction, and the Y direction is the sub scanning direction. The hook 50 as a support portion is provided on the lower surface 51 side of the upper wall portion 23. Two hooks 50 are provided in the vicinity of the other side 12 a (see FIG. 1) parallel to the side 12 b parallel to the sub-scanning direction Y of the platen glass 12. These two hooks 50 are provided near different ends of the side 12a. Two L-shaped stoppers 52 that engage with the platen glass 12 are provided on the other side 12b side. The two stoppers 52 are provided apart from each other in a direction parallel to the side 12b. The hook 50 and an intermediate member to be described later constitute pressing means described in the claims.

  FIG. 4 is an enlarged perspective view showing the hook 50. The hook 50 is L-shaped as illustrated, and one side is integrally formed with the side wall portion 54 of the housing 11. If one side is integrally formed with the side wall portion 54, the strength of the hook 50 can be improved. The hook 50 extends in parallel with the above-described side 12a from the shaft portion 50a extending in a plate shape in a direction perpendicular to the lower surface 51 from the lower surface 51 side of the upper wall portion 23, and from the end portion of the shaft portion 50a on the opposite upper wall portion 23 side. It is comprised with the plate-shaped arm part 50b. In addition, since the hook 50 should just be a structure which can support an intermediate member, the axial part 50a is not necessarily required. Specifically, for example, the arm part 50b may protrude in parallel with the upper wall part 23 from the side wall part 54 of the case. The arm portion 50 b extends in a direction away from the other hook 50. In addition, you may make it extend toward the other hook 50. FIG. The arm portion 50b is formed so as not to overlap the platen glass 12 when viewed from above. There is a space between the tip of the arm portion 50b and the upper wall portion 23. Therefore, an intermediate member described later can be inserted between the hook 50 and the platen glass 12 from a direction parallel to the side 12a. it can. At a predetermined position of the arm portion 50b, an engagement hole 55 is formed as a first engagement portion that engages with a second engagement portion provided in the elastic portion of the intermediate member.

Next, the intermediate member will be described.
FIG. 5A to FIG. 5C are perspective views of the intermediate member. The holder 56 as an intermediate member has a first contact part 61, a second contact part 62, a third contact part 63, a fourth contact part 64, and an elastic part 65. The image scanner 1 has two holders 56, which are formed in a symmetrical shape.
The first contact portion 61 has a substantially rectangular plate-like base portion 66 and a wall portion 67 extending perpendicularly from the base portion 66 along one side of the base portion 66. The protruding step portion 66 a of the base portion 66 comes into contact with the lower surface 51 of the upper wall portion 23 when the holder 56 is supported by the hook 50. When the base portion 66 is provided on the holder 56, the hook 50 can support the holder 56 by holding the base portion 66 with the upper wall portion 23. Therefore, as described above, the arm portion 50b can be prevented from overlapping the platen glass 12 when viewed from the top, and the mounting operation of the platen glass 12 is facilitated. The wall 67 abuts against the side wall 54 when the holder 56 is supported by the hook 50.

  The elastic portion 65 is an end portion of the base portion 66 and ends 66b (see FIG. 5C) and 66c (see FIG. 5) in a direction intersecting the one side 12a of the platen glass 12 when the holder 56 is supported by the hook 50. (See (A)), it protrudes from the vicinity of the end portion 66b on the insertion direction side. The elastic portion 65 protruding from the vicinity of the end portion 66b is inclined so as to be separated from the base portion 66 toward the other end portion 66c. The holder 56 is supported by the hook 50 in such a posture that the elastic portion 65 is inclined toward the opposite upper wall portion 23 toward the other end portion 66c.

  The elastic portion 65 has a protrusion 69 as a second engaging portion that protrudes toward the anti-base portion 66 side. Accordingly, the protrusion 69 protrudes to the side opposite to the upper wall portion 23 when the holder 56 is supported by the hook 50. In this embodiment, the X direction is the insertion direction in FIG. 5A, and when the projection 69 is provided, the projection 69 engages with the engagement hole 55, whereby the holder 56 can be positioned in the insertion direction. Further, the protrusion 69 is formed with a tapered surface 69a on the insertion direction side. When the taper surface 69a is formed on the protrusion 69, the taper surface 69a slides on the arm portion 50b when the holder 56 is inserted, and the elastic portion 65 is gradually elastically deformed. Therefore, the holder 56 can be easily inserted. Note that a protrusion may be provided on the hook 50 and an engagement hole may be provided on the elastic portion 65.

  The elastic portion 65 has a handle portion 70 that further extends on the opposite side to the one end portion 66b described above with the protrusion 69 interposed therebetween. The handle portion 70 extends in a direction from one end portion 66b toward the other end portion 66c. When the holder 56 is supported by the hook 50, the handle portion 70 is not covered with the hook 50 on the side opposite to the upper wall portion 23, and extends to a length sufficient for an operator to put a finger. For this reason, when removing the platen glass 12 for maintenance, the operator can easily remove the holder 56 by placing a finger on the handle portion 70 and pushing it, whereby the platen glass 12 can be easily removed. If the elastic part 65 is provided in the base 66, the elastic part 65 can be enlarged without enlarging the housing 11 in the height direction. Accordingly, the platen glass 12 can be more firmly fixed without increasing the size of the housing 11.

  The third contact portion 63 extends in a plate shape from the base portion 66 in parallel with the wall portion 67. An end surface 63 a of the third contact portion 63 facing upward in FIG. 5C contacts the arm portion 50 b when the holder 56 is supported by the hook 50. In FIG. 5C, the surface 63 b comes into contact with the end surface of the one side 12 a of the platen glass 12 when the holder 56 is supported by the hook 50.

  The second contact portion 62 extends in a plate shape from the vicinity of the end portion of the third contact portion 63 on the side opposite to the base portion 66 in a direction parallel to the base portion 66 and away from the base portion 66. The surface 62a of the second contact portion 62 facing upward in FIG. 5B and the surface of the step portion 66a facing upward in FIG. 5B of the base 66 are a distance corresponding to the thickness of the platen glass 12. Only separated. Therefore, when the holder 56 is supported by the hook 50, the stepped portion 66 a comes into contact with the upper wall portion 23, and the surface 62 a comes into contact with the platen glass 12.

  The fourth contact portion 64 is formed in a plate shape perpendicular to the second contact portion 62 and perpendicular to the third contact portion 63 on the other end portion 66c side of the base portion 66 described above. . When the holder 56 is in a posture supported by the hook 50, the fourth contact portion 64 contacts the end surface of the side that intersects the one side 12 a of the platen glass 12.

Next, fixation of the platen glass 12 will be described.
1A and 1B are perspective views showing a state in which the platen glass 12 is fixed.
First, as shown in FIG. 3, the platen glass 12 is placed so as to close the opening 22 with the side 12 b side of the platen glass 12 engaged with the stopper 52. At this time, the shaft portion 50a as the contact portion contacts the end surface of the side 12a of the platen glass 12, and the platen glass 12 is positioned in the main scanning direction by the shaft portion 50a and the stopper portion 52. At this time, it is desirable that the platen glass 12 is fastened to the upper wall portion 23 with a double-sided tape or the like.

  Next, as shown in FIGS. 1 (A) and 1 (B), the first contact portion 61 is formed on the upper wall portion 23 between the hook 50 and the platen glass 12 from the direction parallel to the side 12a. The holder 56 is inserted in such a posture that the second abutting portion 62 abuts against the lower surface of the platen glass 12. In this insertion, the base 66 is inserted first from the end 66b side. When the holder 56 is inserted, the elastic portion 65 comes into contact with the arm portion 50b and is pushed back toward the upper wall portion 23 to be elastically deformed. When the protrusion 69 is inserted to a position where the protrusion 69 can be engaged with the engagement hole 55, the protrusion 69 pressed by the elastic portion 65 toward the non-upper wall portion 23 is engaged with the engagement hole 55. At this time, the elastic portion 65 does not return to the original state where it is not elastically deformed but is still elastically deformed. The holder 56 is positioned in a direction parallel to the side 12 a, that is, in the sub-scanning direction by the protrusion 69 engaging with the engagement hole 55. At this time, the third contact portion 63 contacts the end face of the side 12 a of the platen glass 12, and the wall portion 67 contacts the side wall portion 54 of the housing 11. Accordingly, the platen glass 12 is finally positioned in the main scanning direction by the shaft portion 50 a and the holder 56. At this time, the fourth contact portion 64 contacts the end surface of the platen glass 12, whereby the platen glass 12 is positioned in the sub-scanning direction. The holder 56 presses the platen glass 12 against the upper wall portion 23 by a reaction force from the arm portion 50b when the elastic portion 65 comes into contact with the arm portion 50b and elastically deforms. Thereby, the platen glass 12 is positioned in any of the main scanning direction, the sub scanning direction, and the gravity direction. In addition, between the shaft part 50a and the platen glass 12, between the third contact part 63 and the platen glass 12, and between the fourth contact part 64 and the platen glass 12, for example, about 0.2 mm. May be provided.

In this state, when the upper wall portion 23 is turned over from the state shown in FIG. 3, the hook 50 supports the holder 56, and the second contact portion 62 of the holder 56 contacts the lower surface of the platen glass 12 to support the platen glass 12. To do. At this time, the first abutting portion 61 of the holder 56 abuts on the upper wall portion 23 according to the principle of leverage.
According to the image scanner 1 according to the present invention described above, since the holder 56 is not screwed, the female screw portion is unnecessary, and the size in the height direction can be reduced. Further, since the holder 56 can be inserted from a direction parallel to the side 12a, a space for sliding the holder 56 from the direction perpendicular to the side 12a toward the platen glass 12 is unnecessary, and the size in the width direction can be reduced. Therefore, according to this image reading apparatus, the platen glass 12 can be fixed without increasing the size of the housing 11.

In this embodiment, the shaft portion 50a of the hook 50 and the holder 56 are in contact with the end surface of the platen glass 12 to position the platen glass 12 in the main scanning direction. However, only one of them is positioned in the main scanning direction. You may make it do.
Moreover, although the case where the holder 56 as an intermediate member has the first contact portion 61 has been described as an example in the present embodiment, the intermediate member may not have the first contact portion. . Specifically, for example, the intermediate member may be a plate-like member. In this case, for example, the arm part 50 b may overlap the platen glass 12 in a top view, and an intermediate member may be inserted between the arm part 50 b and the platen glass 12. A corresponding member may be integrally formed on the upper wall portion 23 side. When the intermediate member is formed in a plate shape, the intermediate member can be inserted from the platen glass 12 side instead of a direction parallel to one side of the platen glass 12.

In the present embodiment, the holder 56 having the elastic portion 65 presses the platen glass 12 against the upper wall portion 23, but the hook 50 may press the platen glass 12 through the intermediate member as an elastic portion.
In the present embodiment, the pressing means is configured by integrally forming the elastic portion 65 with the holder 50, but the pressing means may be configured by providing the holder 50 with a spring instead of the elastic portion 65.

  In this embodiment, the image scanner is described as an example of the image reading apparatus. However, the present invention may be applied to an electronic copying machine.

(A) And (B) is a perspective view which shows a mode that the press means which concerns on one Example of this invention presses a platen. (A) is a schematic diagram of an image reading apparatus according to an embodiment of the present invention, (B) is a block diagram thereof. The perspective view of the lower surface side of the upper wall part which concerns on one Example of this invention. The enlarged view of the support part which concerns on one Example of this invention. (A)-(C) are the perspective views of the intermediate member which concerns on one Example of this invention. The perspective view which shows the conventional intermediate member.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Image scanner (image reading apparatus), 11 housing | casing, 12 Platen glass (original plate), 14 Optical system (reading means), 18 Linear image sensor (reading means), 22 Aperture, 23 Upper wall part, 24 Main scanning drive Unit (reading unit), 25 sub-scanning drive unit (reading unit), 26 analog front end unit (reading unit), 27 digital image processing unit (reading unit), 29 control unit (reading unit), 50 hook (support unit, Pressing means), 55 engaging hole (first engaging portion), 56 holder (intermediate member, pressing means), 61 first contacting portion, 62 second contacting portion, 63 third contacting portion , 64 Fourth contact portion, 65 Elastic portion, 69 Projection (second engagement portion), 70 Handle portion

Claims (8)

A housing having an opening in the upper wall,
A transparent document table having a larger area than the opening and closing the opening from below;
An intermediate member and a support portion provided on an inner wall of the housing near one side of the document table, and the intermediate member is disposed between the support unit and the document table in a direction parallel to the one side or the document table. A pressing portion that can be inserted from the side, and when the intermediate member is inserted, at least one of the intermediate member or the supporting portion presses the document table against the upper wall portion; and
A reading unit that is housed in the housing and reads a document placed on the document table and outputs a digital image;
An image reading apparatus comprising: The intermediate member has a first contact portion that contacts the lower surface of the upper wall portion and a second contact portion that contacts the lower surface of the document table,
The support member is configured so that the first contact portion is in contact with the lower surface of the upper wall portion and the second contact portion is in contact with the lower surface of the document table in a direction parallel to the one side. The image reading apparatus according to claim 1, wherein the image reading apparatus can be inserted.   The intermediate member is an end portion of the first contact portion, and projects from the one end portion in the direction parallel to the one side to the opposite upper wall portion side when the intermediate member is in the posture, and the other end portion. An elastic portion that is inclined toward the opposite upper wall portion, and when in the posture, the elastic portion abuts against the support portion and elastically deforms, and presses the document table against the upper wall portion. The image reading apparatus according to claim 2. The support portion has a first engagement portion,
The image reading apparatus according to claim 3, wherein the elastic portion includes a second engaging portion that engages with the first engaging portion when the intermediate member is inserted in the posture. apparatus.   The elastic portion extends opposite to the one end portion with the second engaging portion interposed therebetween, and the handle portion does not cover the upper wall portion side with the support portion when the intermediate member is in the posture. The image reading apparatus according to claim 4, comprising:   The said intermediate member has a 3rd contact part which contact | abuts to the end surface of the said one side of the said original stand, when it is supported by the said support part. Image reading device.   The image reading apparatus according to claim 1, wherein the support portion includes a contact portion that contacts an end surface of the one side of the document table.   The said intermediate member has a 4th contact part contact | abutted to the end surface which cross | intersects the end surface of the said one side of the said original stand, when it is supported by the said support part. The image reading apparatus according to one item.

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