JP5639906B2 - Image reading apparatus and composite apparatus - Google Patents

Description

  The present invention relates to an image reading apparatus such as a scanner or a facsimile apparatus, and a composite apparatus such as a copying machine or an MFP (Multi Function Printer / Product / Peripheral) in which the image reading apparatus is mounted on the upper part of the image forming apparatus. .

  In the conventional image reading apparatus, a medium placing member for placing a medium for reading and a fixing member for fixing the medium placing member are configured.

JP 2009-44521 A

  However, in the conventional image reading apparatus, the gap formed between the medium placement member and the fixed member depends on the dimensional accuracy of the members, so that if the gap becomes large due to a manufacturing error, the medium There was a problem of getting in.

Image reading apparatus of the present invention comprises a medium mounting member for mounting the reading medium, and a fixing member to which the medium mounting member is fixed, and the adhesive member for adhering said fixing member to said medium mounting member , and a, a reader unit for reading said scanned medium. The fixing member includes a fixing member main body having a first fixing surface facing the medium mounting member, and extends from a distal end portion of the fixing member main body. The fixing member main body side has the distal end portion as a fulcrum. An elastic portion having a second fixed surface that can be elastically deformed to, an abutting portion having a third fixed surface that is provided at a tip portion of the elastic portion and faces the medium placement member; The first fixing surface and the second fixing surface are bonded to the medium mounting member by the adhesive member, and the second fixing surface is deformed to the medium mounting member side by the adhesive member. Accordingly, the third fixed surface of the abutting portion is pressed against the medium placing member.

Composite device of the present invention is characterized by comprising said image reading apparatus, and an image forming apparatus for forming a recorded image on a recording medium from the image of said scanned medium which is read by the reader unit.

  According to the image reading apparatus and the composite apparatus of the present invention, the following effects (1) to (4) are obtained.

(1) An elastic portion that can be elastically deformed extends at the distal end portion of the fixing member body, and the second fixing surface of the elastic portion is pulled and deformed by the adhesive member, and the third portion of the abutting portion is deformed. Since the fixed surface is configured to be pressed against (i.e., closely contact) the medium placement member , even if the medium placement member is curved, the third fixed surface of the abutting portion is the medium placement member. Therefore, no gap is generated between the third fixed surface and the medium placing member. For this reason, since the reading medium does not enter the gap between the medium placing member and the fixing member, it is possible to prevent the reading medium from being displaced.

(2) Since the elastic portion is extended at the tip of the fixing member main body, the thickness of the elastic portion does not increase. For this reason, blurring of an image when a reading medium larger than the document frame is set can be suppressed.

(3) Since the elastic portion is extended at the distal end portion of the fixing member main body, the number of assembling steps can be suppressed, and a reduction in manufacturing cost can be expected.

(4) Since the elastic portion is extended at the distal end portion of the fixing member main body, the elastic portion is not displaced when the fixing member main body and the elastic portion are configured as separate parts. For this reason, it is possible to prevent the reading medium from being displaced.

FIG. 1 is a diagram showing the vicinity of a reading unit and a document scale unit in FIG. 4 according to the first embodiment of the present invention. FIG. 2 is an external view schematically showing the composite apparatus according to the first embodiment of the present invention. FIG. 3 is a block diagram showing an outline of the composite apparatus of FIG. FIG. 4 is a block diagram showing an outline of the scanner unit in FIG. FIG. 5 is a cross-sectional view showing the frame in FIG. FIG. 6 is an enlarged view showing the vicinity of the original scale portion in FIG. FIG. 7 is a configuration diagram showing the vicinity of the original scale portion in FIG. 1A according to the second embodiment of the present invention.

  Modes for carrying out the present invention will become apparent from the following description of the preferred embodiments when read in light of the accompanying drawings. However, the drawings are only for explanation and do not limit the scope of the present invention.

(Configuration of Compound Device of Example 1)
FIG. 2 is an external view schematically showing the composite apparatus 1 according to the first embodiment of the present invention.

  The composite apparatus 1 includes an image forming apparatus (for example, a printer unit) 10 that forms an image and prints the image on a recording medium P, and an image reading apparatus (for example, a scanner unit) 40 that reads the image. The scanner unit 40 is mounted on the upper part of the printer unit 10. The printer unit 10 and the scanner unit 40 are coupled by a mechanical connection member (not shown), and an electrical connection is obtained by an electric transmission member (not shown).

  Further, although not shown, the composite apparatus 1 transmits the image data read by the upper communication means for performing communication with the upper apparatus such as a personal computer and the scanner unit 40 to the external facsimile apparatus, and the facsimile transmission for receiving from the outside. And external transmission means for transmitting image data read by the scanner unit 40 to an external electronic device or receiving image data transmitted from the outside.

  The composite device 1 has the functions listed in the following (a) to (d) as device functions.

(A) The scanned image data is transmitted to the printer unit 10 by the scanner unit 40, and an image is formed on the recording medium P by the printer unit 10.

  (B) For example, the printer unit 10 receives an electric transmission signal from an external electronic device such as a personal computer (hereinafter referred to as “personal computer”) and forms an image on the recording medium P.

  (C) The image data read by the scanner unit 40 is transmitted to an external facsimile apparatus by the facsimile function, or image data transmitted from the external facsimile apparatus is received.

  (D) The image data read by the scanner unit 40 is transmitted to an external electronic device such as a personal computer or a USB (Universal Serial Bus) memory.

FIG. 3 is a configuration diagram showing an outline of the composite apparatus 1 of FIG.
The printer unit 10 in the composite apparatus 1 is a mechanism unit that forms an image on a recording medium P using an electrophotographic system that is a known light emitting diode (hereinafter referred to as “LED”) tandem color system as means for forming an image. 20 is built-in. A paper feed cassette 11 that stores the recording medium P and supplies the recording medium P to the mechanism unit 20 is provided below the mechanism unit 20. The paper feed roller 12 is a mechanism for feeding the recording medium P from the paper feed cassette 11 one by one and supplying it to the mechanism unit 20, and has a built-in one-way clutch function. A sensor 21 that detects that the recording medium P has been fed out and passed by the paper feed roller 12 is provided on the downstream side of the paper feed roller 12.

  On the downstream side of the sensor 21, there are provided a registration roller 22 having a skew correction means for the recording medium P and a sensor 23 for detecting that the recording medium P has passed through the registration roller 22. The transport roller 24 has a function of transporting the recording medium P to the image forming unit 30, and the light sensor 25 detects timing for starting image formation inside the image forming unit 30.

  The image forming unit 30 includes a plurality of printing process cartridges 31 (= 31K, 31Y, 31M, 31C) corresponding to a plurality of colors of black (K), yellow (Y), magenta (M), and cyan (C), A conveyance belt unit 36 for conveying the recording medium P. The printing process cartridge 31 holds a plurality of photosensitive drums 32 (= 32K, 32Y, 32M, and 32C) that form an electrostatic latent image and transfers it to the recording medium P, and a photosensitive drum 32 that holds toner as a developer. And a plurality of charge rollers 34 (= 34K, 34Y, 34M, 34C) for charging the plurality of photosensitive drums 32. .

  A plurality of printing process cartridges 31 (= 31K, 31Y, 31M, 31C) constituting the image forming unit 30 form developer images of four colors, so that four sets are from the upstream side to the downstream side of the printing medium P. Are arranged in the order of black (K), yellow (Y), magenta (M), and cyan (C). When it is not necessary to distinguish between these, the printing process cartridge 31 is simply described. The same applies to the photosensitive drum 32, the toner cartridge 33, the charge roller 34, and the transfer roller 35.

  On the downstream side of the image forming unit 30, a fixing unit 26 that fixes an image printed on the recording medium P by heat and pressure, and a discharge unit 27 for discharging the recording medium P out of the printer unit 10. And are provided.

  The photosensitive drum 32 is charged by the charge roller 34, forms an electrostatic latent image by receiving LED light from a print head (not shown), and develops the electrostatic latent image by supplying toner from the toner cartridge 33. It is configured. The transport belt unit 36 has a function of transporting the recording medium P. The transfer roller 35 has a function of transferring the electrostatic development developed on the photosensitive drum 32 to the recording medium P. The fixing unit 26 has a function of fixing the electrostatic development transferred to the recording medium P onto the recording medium P by heat and pressure. The discharge unit 27 has a function of discharging the recording medium P on which the developer image is fixed to the outside of the printer unit 10.

(Configuration of Scanner Unit of Example 1)
FIG. 4 is a configuration diagram showing an outline of the scanner unit 40 in FIG.

  The scanner unit 40 is configured such that an auto document feeder (hereinafter referred to as “ADF”) 40a is provided on the upper part of the reading unit 40b. A document tray 41 is provided in the ADF 40a, and a reading medium (for example, a document) 42 to be read is set. In the vicinity of the base of the document tray 41, a pickup roller 43 for feeding the document 42 into the ADF 40a is provided. Further, a separation roller 44 for separating and conveying the document 42 fed by the pickup roller 43 one by one, and a separation pad 45 at a position facing the separation roller 44 are provided downstream.

  The ADF 40 a has an exterior member 59, and a conveyance path 46 for the document 42 is formed inside. A conveyance roller 47 is provided in the conveyance path 46, and a pressure roller 48 that presses the document 42 and applies a conveyance force is provided at the opposite position.

A plate-like ADF reading glass 50 having a front surface 50c and a back surface 50d is disposed in the reading unit 40b in the horizontal direction. The document pressing member 49 is urged toward the ADF reading glass 50 by a spring 51 attached to the upper portion, and presses the document 42 conveyed in the conveying path 46 against the ADF reading glass 50.

  The document scooping member 55 has a function of scooping up the document 42 in order to guide the document 42 that has passed through the ADF reading glass 50 to the discharge roller 52. The discharge roller 52 and the pressure roller 53 provided at the opposite position discharge the document 42 that has been read to the stacker unit 56 outside the ADF 40a. A reading glass 57 for a flat bed (hereinafter referred to as “FB”) as a medium placing member is provided at the lower portion of the stacker unit 56.

  The reading mechanism (for example, reading sensor) 54 is covered with the back surface 50d of the reading glass 50 for ADF. The reading sensor 54 is an optical reflection type image sensor, a light emitting element that irradiates light on the original 42 on the reading glass 50 for ADF, and a light receiving element that senses reflected light from the original 42 and converts it into an electrical signal. It is comprised by.

  In the case of FB reading, the document 42 is placed on the FB reading glass 57. The reading sensor 54 is provided so as to be able to reciprocate in the horizontal direction indicated by the arrow Z inside the reading unit 40b by a driving mechanism (not shown). The reading sensor 54 is configured to read an image on the document 42 by this reciprocating motion.

  In the case of ADF reading, as shown in FIG. 4, the reading sensor 54 stops at a position facing the document pressing member 49 with the ADF reading glass 50 interposed therebetween.

  The lower part of the reading unit 40b is covered with a support member 58 that protects internal members.

(Configuration of Reading Unit of Example 1)
FIGS. 1A and 1B are diagrams showing the vicinity of the reading unit 40b and the document scale unit 72 in FIG. 4 according to the first embodiment of the present invention.

  Fig.1 (a) is the perspective view which looked at the reading part 40b from diagonally upward. On the upper surface of the reading unit 40b, an opening is provided in the frame 70 as a fixing member, and the ADF reading glass 50 and the FB reading glass 57 are placed thereon.

  The frame 70 is formed with a fixing member main body 71 as an outer frame portion and a document scale portion 72 as an elastic body extending from the fixing member main body 71. On the upper surface of the document scale portion 72, characters indicating the size of the document 42 (for example, A4, B4, A3, etc.) are displayed.

  FIG.1 (b) is XX sectional drawing in Fig.1 (a). FIG. 5 is a cross-sectional view showing the frame 70 in FIG.

  The fixing member main body 71 has a bottom surface 71a as a first fixing surface. The document scale portion 72 includes an elastic portion 72b and a document abutting portion 73 as an abutting portion. When the document 42 is read by FB, the document 42 is positioned by abutting the document 42 against the document abutting surface 73b.

The elastic part 72b has a bottom surface 72a as a second fixed surface. Document abutting portion 73 has a bottom surface 73a of the third fixing surface that presses the FB Yo読seen up glass 57 as a vehicle mounting member, and a document abutting surface 73b of the regulating portion for abutting the medium have.

  The bottom surface 71 a of the fixing member main body 71 and the bottom surface 72 a of the elastic portion 72 b are bonded to the FB reading glass 57 by an adhesive member (for example, a double-sided adhesive tape) 74. Therefore, the document scale portion 72 is configured to be biased toward the upper surface of the FB reading glass 57 so that the bottom surface 73 a of the document abutting portion 73 is in close contact with the upper surface of the FB reading glass 57. The FB reading glass 57 and the frame 70 are supported by the support member 58, respectively.

  The material of the frame 70 is, for example, PC-ABS which is a kind of engineering plastic. The fixing member main body 71 is made thin so as to be easily deformed, and the thickness of the material is about 2 mm. The original scale portion 72 is made thinner and is configured to be elastically deformable.

  The double-sided adhesive tape 74 has a certain thickness and elasticity. For example, the thickness is 0.4 mm, and the material is acrylic foam.

  As shown in FIG. 5, the bottom surface 71a of the fixing member main body 71 and the bottom surface 72a of the elastic portion 72b are different in height when the frame 70 is placed on the reading glass 57 for FB. The double-sided adhesive tape 74 for fixing the FB reading glass 57 is pasted across the bottom surface 71a and the bottom surface 72a.

  Since the reading glass 57 for FB is harder than the frame 70 made of plastic and is not easily deformed, the reading glass 57 for the FB out of two surfaces having different heights in the frame 70, that is, the bottom surface 71a and the bottom surface 72a. The bottom surface 72 a far from the top surface of the FB is drawn toward the top surface of the reading glass 57 for the FB by the double-sided adhesive tape 74.

  As a result, the original scale portion 72 that is thin and elastically deformable curves downward, so that the bottom surface 73a of the original abutment portion 73 in the original scale portion 72 is in close contact with the upper surface of the FB reading glass 57. It will be.

FIG. 6 is an enlarged view showing the vicinity of the document scale portion 72 in FIG.
The configuration in the vicinity of the document scale unit 72 will be described in more detail with reference to FIG.

  A document scale portion 72 indicated by a solid line shows a state where the bottom surface 72a and the double-sided adhesive tape 74 are not yet bonded. An original scale portion 72 indicated by a two-dot chain line shows a state in which the bottom surface 72a and the double-sided adhesive tape 74 are bonded, and is a portion indicated by a broken line at the upper left end portion of the double-sided adhesive tape 74 in FIG. It shows that the double-sided adhesive tape 74 is adhered to the bottom surface 72a.

In FIG. 6, the distance between the bottom surface 71a and the bottom surface 72a is the distance d1, the distance between the bottom surface 72a and the bottom surface 73a is the distance d2, the thickness of the double-sided adhesive tape 74 is the thickness t1, and the bottom surface 73a and the reading glass 57 for FB Assuming that the gap formed between them is w1, the gap w1 is expressed by Equation 1.
w1 = d1 + t1-d2 (Formula 1)

Further, when the boundary between the fixing member main body 71 and the document scale portion 72 is a fulcrum P, the gap W1 formed at a location separated from the fulcrum P by L1 (that is, the length of the document scale portion 72) is filled. Needs to be pulled by w2 by the double-sided adhesive tape 74 at a location separated from the fulcrum P by L2 (that is, the distance between the end of the double-sided adhesive tape 74 and the fulcrum P). At this time, the relationship between w1, w2, L1, and L2 is expressed by Equation 2.
L1: L2 = w1: w2 (Formula 2)
Here, when calculating Equation 2,
From w1 × L2 = w2 × L1 w2 = (w1 × L2) / L1 (Formula 3)
It becomes.

Here, in order for the bottom surface 73a of the document abutting portion 73 to abut on the FB reading glass 57, a minimum space is required for the document scale portion 72 to elastically deform by w2 with the fulcrum P as a fulcrum. That is, it is necessary that d1 ≧ w2. Therefore, from Expression 3, d1 ≧ w2 = (w1 × L2) / L1 (Expression 4)
It is necessary to satisfy.

The following Expression 5 is obtained from Expression 1 and Expression 4, and the gap w1 between the FB reading glass 57 and the document abutting portion 73 is filled by satisfying these relationships d1, d2, t1, L1, and L2. Can do.
d1 ≧ (d1 + t1−d2) × (L2 / L1) (Formula 5)

(Operation of the scanner unit of the first embodiment)
The image reading operation of the scanner unit 40 will be described with reference to FIGS.

In the image reading operation, the document 42 conveyed by the ADF 40 a is read while the reading sensor 54 is stopped at a predetermined position, and the document 42 placed on the FB reading glass 57 is read by the reading sensor 54. There is a reading operation for FB which is read while moving in the sub-scanning direction (Z direction in FIG. 4). The reading sensor 54 operates under the control of a driving mechanism (not shown) and a control unit.

  Of the image reading operations of the scanner unit 40, the FD reading operation will be described.

The document 42 is placed on the FB reading glass 57 by the user, and the document 42 is applied to the document abutting surface 73 b of the frame 70. On the upper surface of the document scale portion 72 of the frame 70, characters (for example, A4, B4, A3, etc.) indicating the size of the document 42 are displayed. For example, when the user presses the start button of the operation unit (not shown), the reading sensor 54 moves in the reading unit 40b in the sub-scanning direction , and light is emitted from the lower surface side of the FB reading glass 57 to the document 42. Irradiate and read the reflected light from the document 42. This reflected light is photoelectrically converted and stored as image data in a storage unit (not shown).

  The image data read in this way is sent to the printer unit 10 by an electric transmission member (not shown), and an image is formed by the printer unit 10.

(Operation of Printer Unit of Example 1)
The image forming operation of the printer unit 10 will be described with reference to FIG.

  When the scanner unit 40 reads the data of the document 42, the recording medium P set in the paper feed cassette 11 is fed out from the paper feed cassette 11 one by one by the paper feed roller 12, and the registration roller 22 and the transport roller. 24 to the image forming unit 30. The recording medium P on which the toner image is transferred by the transfer roller 35 in the image forming unit 30 is conveyed to the fixing unit 26, and the toner on the recording medium P is fixed by heat and pressure. Thereafter, the recording medium P passes through the discharge unit 27 and is discharged out of the printer unit 10, and the image formation is completed.

(Effect of Example 1)
According to the scanner unit 40 and the composite apparatus 1 of the first embodiment, the following effects (1) to (7) are obtained.

  (1) At the time of FB reading, the original 42 is abutted against the original abutting surface 73 b to position the original 42, but the bottom surface 73 a of the original abutting portion 73 is in close contact with the FB reading glass 57. The document 42 does not enter the gap between the FB reading glass 57 and the frame 70.

  (2) Since the document 42 is correctly positioned, it is possible to prevent the positional deviation of the read image and the read image from being inclined.

  (3) Since the original 42 enters the gap, the original 42 can be prevented from being bent, bent, torn, or the like.

  (4) Since the document scale portion 72 is formed integrally with the fixing member main body 71, the thickness of the document scale portion 72 does not increase. For this reason, it is possible to suppress blurring of the image when the document 42 larger than the document frame is set.

  (5) Since the manuscript scale portion 72 is formed integrally with the fixing member main body 71, the number of assembling steps can be suppressed, and a reduction in manufacturing cost can be expected.

  (6) Since the document scale portion 72 is formed integrally with the fixing member main body 71, the displacement of the elastic portion 72b that occurs when the fixing member main body 71 and the elastic portion 72b are configured as separate parts does not occur. . For this reason, it is possible to prevent the reading medium from being displaced.

(7) Since the double-sided adhesive tape 74 is used to fix the FB reading glass 57 to the frame 70 and simultaneously fill the gap between the frame 70 and the FB reading glass 57, the FB reading glass 57 is used. in even if the FB for reading glass 57 is added external force is bent, it is possible to fill the gap between the frame 70 and the FB for reading glass 57 to follow the deflection.

(Configuration of Example 2)
The configurations of the printer unit 10 and the scanner unit 40 in the second embodiment of the present invention are the same as those in the first embodiment. The difference between the second embodiment and the first embodiment is that the configuration of the fixing member in the reading unit in the second embodiment is different from the first embodiment.

FIGS. 7A and 7B are configuration diagrams showing the vicinity of the document scale portion 72 in FIG. 1A in the second embodiment of the present invention, and are common to the elements in FIG. 1 showing the first embodiment. Elements are given common symbols.

  The configuration of the frame 70A, which is a fixing member in the second embodiment, is substantially the same as that of the frame 70 in the first embodiment. The difference between the frame 70A of the second embodiment and the frame 70 of the first embodiment is that the height of the document abutting portion 73A is larger than the thickness of the fixing member main body 71 in the second embodiment. It is. Further, the second embodiment is different from the first embodiment in that only the bottom surface 71 a of the fixing member main body 71 is bonded to the FB reading glass 57 by the double-sided adhesive tape 74.

  In the second embodiment, when the frame 70A is bonded to the FB reading glass 57, the document scale portion 72 is curved upward, and the document abutting portion 73A is urged toward the FB reading glass 57. Therefore, the bottom surface 73Aa of the document abutting portion 73A comes into close contact with the FB reading glass 57.

More specifically, as shown in FIG. 7A, the fixing member main body 71 is fixed to the FB reading glass 57 with a double-sided adhesive tape 74. The document scale portion 72 in the frame 70 </ b> A has a structure that is thinner than the thickness of the fixing member main body 71.

As shown in FIG. 7B, the height of the document abutting portion 73 </ b> A is larger than the thickness when the double-sided adhesive tape 74 is attached to the fixing member main body 71. In other words, the bottom surface 73 </ b> Aa of the document abutting portion 73 </ b> A is configured to be closer to the top surface of the FB reading glass 57 than the bottom surface of the double-sided adhesive tape 74 attached to the fixing member main body 71.

In this way, the bottom surface 73Aa of the document abutting portion 73A is closer to the top surface of the FB reading glass 57 than the bottom surface of the double-sided adhesive tape 74 in a state where the double-sided adhesive tape 74 is attached to the fixing member main body 71. ing. Therefore, as shown in FIG. 7A, when the FB reading glass 57 is attached to the frame 70A, the bottom surface 73Aa of the document abutting portion 73A inevitably adheres to the upper surface of the FB reading glass 57. become.

  At this time, since the thickness of the document scale portion 72 is configured to be thinner than the thickness of the fixing member main body 71, the document scale portion 72 is curved upward and the force applied to the double-sided adhesive tape 74 is kept small. The bottom surface 73Aa of the document abutting portion 73A is urged against the top surface of the FB reading glass 57. As a result, the document abutting portion 73A and the FB reading glass 57 are brought into close contact with each other.

(Operation of Example 2)
The operations of the scanner unit 40 and the printer unit 10 in the second embodiment are the same as those in the first embodiment.

(Effect of Example 2)
The effects of the scanner unit 40 and the composite apparatus 1 according to the second embodiment of the present invention are substantially the same as those of the first embodiment, but differ in the following points. In the first embodiment, there are three places where the double-sided adhesive tape 74 is bonded, that is, the bottom surface 72 a of the document scale portion 72, the bottom surface 71 a of the fixing member main body 71, and the top surface of the FB reading glass 57. In contrast, in the second embodiment, the bottom surface 71a of the fixing member main body 71 and the upper surface of the reading glass 57 for the FB are provided in two places, so that the assembly of the reading unit 40b is easier than in the first embodiment. There is.

(Modification)
The present invention is not limited to the above-described embodiments, and various usage forms and modifications are possible. For example, the following forms (a) to (d) are used as the usage form and the modified examples.

  (A) Although the scanner unit 40 has been described as the image reading apparatus, the present invention is applicable not only to a scanner but also to a copying machine, a facsimile machine, an MFP, and the like.

  (B) The printer unit 10 has been described in the case where an image is formed and recorded on the recording medium P by the LED tandem color method. However, the printer unit 10 can capture an image by a laser method, an inkjet method, a dot matrix impact method, or the like. It may be formed and recorded.

  (C) Although the optical image sensor having a light emitting element and a light receiving element has been described as the reading sensor 54, a complementary MOS transistor (CMOS) image sensor or a charge coupled device (CCD) image sensor may be used.

  (D) Although the document scale portion 72 has been described as being integrally formed of the same material as the fixing member main body 71, it may be formed of another material that can be elastically deformed.

DESCRIPTION OF SYMBOLS 1 Compound apparatus 10 Printer part 40 Scanner part 40a Automatic document feeder (ADF)
40b Reading unit 42 Document 54 Reading sensor 57 FB reading glass 58 Support member 70, 70A Frame 71 Fixed member main body 71a Bottom surface 72 Document scale unit 72a Bottom surface 72b Elastic portion 73, 73A Document abutting portion 73a, 73Aa Bottom surface 73b, 73Ab Document Abutting surface 74 Double-sided adhesive tape

Claims (6)

A medium placing member for placing a reading medium;
A fixing member to which the medium mounting member is fixed;
An adhesive member that adheres the fixing member to the medium placement member;
A reading mechanism for reading the reading medium;
An image reading apparatus to obtain Bei a,
The fixing member is
A fixing member body having a first fixing surface facing the medium mounting member;
An elastic portion having a second fixed surface that extends from the distal end portion of the fixing member main body and can be elastically deformed toward the medium placing member with the distal end portion as a fulcrum;
An abutting portion provided at a tip portion of the elastic portion and having a third fixed surface facing the medium placement member;
The first fixing surface and the second fixing surface are bonded to the medium mounting member by the adhesive member, and the second fixing surface is deformed to the medium mounting member side by the bonding member. The image reading apparatus , wherein the third fixed surface of the abutting portion is pressed against the medium placing member . The fixing member body has a plate shape,
The image reading apparatus according to claim 1, wherein the abutting portion is formed by bending the tip portion of the elastic portion toward the medium placement member. The elastic part and the abutting part are
The image reading apparatus according to claim 1, wherein the image reading apparatus is formed integrally with the fixing member main body. The image reading apparatus according to claim 1, wherein the adhesive member is a double-sided adhesive tape having a certain thickness and elasticity. 5. The image reading device according to claim 1, wherein the fixing member main body is configured by an outer frame portion disposed so as to be integrated with the image reading device main body. apparatus. An image reading device according to any one of claims 1 to 5,
An image forming apparatus for forming a recorded image on a recording medium from an image of the reading medium read by the reading mechanism;
A composite apparatus comprising:

Images