JP2008026718A - Image forming apparatus and manufacturing method therefor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an image forming apparatus, wherein an image reading section is hardly affected by vibration from a main body. <P>SOLUTION: A support 20 is formed in the upper part of the main body 2 of the image forming apparatus. A housing 90 accommodating the optical components of the image reading section 9 is installed in the support 20. The housing 90 has a downward projection 92, while the support 20 has a recess 22. By receiving the protrusion 92 into the recess 22, the housing 90 can be positioned in the support 20. A vibration-proof member 24 installed around the recess 22 can reduce transmission of vibration of the main body 2 to the housing 90 (image reading section 9) from the support 20. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an image forming apparatus represented by a copying machine, a printer, a facsimile, and the like, and a manufacturing method thereof.

With regard to this type of image forming apparatus, an anti-vibration device is installed between the image output device (image forming unit) and the image reading device (image reading unit) placed thereon, and vibration transmission to the image reading device is performed. The prior art which suppresses is known (refer patent document 1). In this prior art, vibration transmission from the image output apparatus to the image reading apparatus is suppressed by interposing an anti-vibration rubber between the image output apparatus and the image reading apparatus. For this reason, it is considered that the prior art can prevent the image quality of the read image from being deteriorated due to the influence of vibration of the image reading apparatus.
JP 2000-356246 A

  In the above prior art, the image output device and the image reading device are separated from each other in structure, and a mode in which only the image reading device is detached and used is assumed. For this reason, the image reading device is merely placed on the image output device via the vibration isolating rubber, and both of them are not securely fixed due to the structure.

  Therefore, in the structure of the prior art, for example, the image reading device is detached from the image output device due to the impact of the user's body, or in the worst case, the image reading device falls and damages expensive optical components. There is a fear.

  On the other hand, even if an attempt is made to apply the structure of the prior art to an image forming apparatus in which the image reading apparatus and the image output apparatus are structurally integrated, there is a risk that the image reading apparatus will be misaligned or dropped as described above. There is sex. For this reason, in order to securely fix the image reading apparatus to the main body of the image forming apparatus, it is necessary to fasten the image reading apparatus to the main body using some kind of fastening members (fixing pins, bolts, etc.). In order to improve the workability, it is necessary to add a positioning member.

  However, even if vibration transmission to the image reading apparatus is suppressed by interposing an anti-vibration rubber, in the structure in which both are fastened using a fastening member, the vibration is eventually transmitted to the image reading apparatus through the fastening member. Therefore, there is a problem that the expected vibration-proofing effect cannot be obtained. However, the structure in which the image reading device is simply placed on the main body via the vibration isolating rubber is not stable as in the prior art, and positioning during the mounting operation of the image reading device is not possible. It becomes difficult and workability deteriorates.

  Therefore, the present invention has an object to provide a technique that does not affect the image reading unit that reads an image and that can easily position the image reading unit with respect to the main body during the mounting operation. Is.

  In the image forming apparatus of the present invention, no positioning member is provided between the housing of the image reading unit and the support that supports the housing. Instead, in the present invention, at the mounting position of the housing, a convex portion is formed on either the housing or the support, a concave portion is formed on the other, and these are fitted together, and between the concave portion and the convex portion. An anti-vibration member is interposed.

  Further, the image forming apparatus of the present invention does not use a fastening member for fastening the housing to the support. Instead, the present invention has a structure in which the support and the housing are mutually restrained by the exterior member. The exterior member covers at least the support and the outer surface of the housing in a state where the housing is attached to the support.

  Therefore, according to the image forming apparatus of the present invention, the image reading unit is positioned with respect to the main body by fitting the convex portion into the concave portion when the housing is attached. Furthermore, since the housing is attached to the support and both are restrained by the exterior member, the image reading unit is not displaced from the main body or dropped off without using a fastening member. Therefore, the image reading unit can stably and accurately read an image without being affected by vibration from the main body, and can greatly contribute to high-quality image formation.

  Further, when attaching the housing to the support, it is not necessary to provide a special positioning member separately, so that the number of parts can be reduced accordingly, and the manufacturing cost can be reduced as a result.

  As described above, in the image forming apparatus of the present invention, the image reading unit is positioned by fitting the concave portion and the convex portion. However, the anti-vibration member can be functioned with respect to this positioning.

  That is, in the image forming apparatus according to the present invention, the vibration isolating member is fitted into the concave portion, and the positioning hole is formed in the vibration isolating member according to the outer shape of the convex portion, so that the convex portion is fitted into the positioning hole. Thus, the support and the housing can be positioned relative to each other.

  In this case, in the manufacturing process of the image forming apparatus, for example, the vibration isolating member is fitted into the concave portion formed in the support, and the convex portion of the housing is fitted into the positioning hole, thereby positioning during assembly. Is easily done. Moreover, since a housing | casing is supported by a support body via an anti-vibration member after an assembly, the reduction of the vibration transmission to a housing | casing can be implement | achieved reliably.

The image forming apparatus of the present invention is manufactured by a method including at least the following procedure.
(1) An optical system part that performs an operation of reading an image of a document as an image reading unit is accommodated in a predetermined housing, and a support is formed at an upper position of a box-shaped main body that accommodates the image forming unit.

(2) At the attachment position where the housing is attached to the support, a convex portion is formed in advance on one of the support or the housing, and a concave portion is formed on the other. At this time, the concave portion has a shape that can accept the convex portion.

(3) In the process of attaching the housing to the support, the support and the housing are positioned relative to each other by fitting the concave portion and the convex portion.

(4) At the time of mounting the above-described casing, a vibration isolating member is interposed between the convex portion and the concave portion at the mounting position.

(5) An exterior member that covers these outer surfaces is attached in a state where the housing is attached to the support, and the support and the housing are mutually restrained by the exterior member.

(6) Preferably, at the time of mounting the casing, the casing is fixed to each other only by the exterior member without fixing the casing to the support by the fastening member.

  The image forming apparatus of the present invention can minimize the occurrence of image degradation due to the influence of vibration of the main body without using parts such as a positioning member and a fastening member.

  Further, according to the manufacturing method of the present invention, the image reading unit can be easily attached to the main body without impairing workability, and the influence of vibration after the attaching operation can be surely suppressed.

Hereinafter, embodiments of an image forming apparatus will be described with reference to the drawings.
FIG. 1 is a perspective view of an image forming apparatus 1 according to an embodiment as viewed from the upper right front. A diagonally lower left direction in FIG. 1 is the front of the image forming apparatus 1 facing the user. 1 is a right side surface of the image forming apparatus 1, and an upper left direction is a left side surface of the image forming apparatus 1. The image forming apparatus 1 is used as, for example, a copying machine, a multifunction peripheral, a network multifunction peripheral (MFP), or the like.

  The image forming apparatus 1 includes a box-shaped main body 2 called an in-body discharge type. Therefore, an in-body type paper discharge tray 15 is formed inside the main body 2. In the paper discharge tray 15, paper printed by the image forming apparatus 1 is discharged from the left side of the main body 2 toward the right side. The user can take out the paper discharged to the paper discharge tray 15 from the front side (or right side) of the main body 2. The image forming apparatus 1 may be provided with a discharge tray that is not an in-body discharge type, and is connected to a post-processing device (not shown) that performs post-processing such as punching processing and stapling processing. Also good.

  A document feeder 8 is mounted on the upper side of the main body 2. When the image forming apparatus 1 is used as a copying machine, a facsimile machine, or a network scanner, a document can be set on the document feeder 8 and read. An optical image reading unit 9 is built in the upper position of the main body 2, and the image surface of the document conveyed to the document feeder 8 is optically read by the image reading unit 9.

  The document feeder 8 is connected to the main body 2 via a hinge mechanism (not shown). The hinge mechanism is located at the rear end portion of the main body 2, and the document feeder 8 can be opened and closed by jumping upward with the hinge mechanism as a fulcrum.

  At the upper position of the main body 2, an operation / display unit 102 is installed in front of the image reading unit 9. The operation / display unit 102 is provided with a plurality of operation keys and switches for receiving various user operations, and a display screen 104 for displaying various information. The operation / display unit 102 also has a function of a touch panel that accepts a user operation via the display screen 104.

  Two upper and lower sheet feed cassettes 4 are installed at a lower position of the main body 2. The paper feed cassette 4 is a so-called front loading type, and the user can replenish paper by pulling the paper feed cassette 4 from the main body 2 to the front side.

  An openable manual feed tray 5 is provided on the right side surface of the main body 2. The manual feed tray 5 is used when a sheet of a size not stored in the sheet feed cassette 4 or an OHP sheet is fed one by one. When not in use, the manual sheet feeder 5 is folded and stored on the right side surface of the main body 2.

  The image forming apparatus 1 includes an exterior cover 80 as an exterior member that covers both the main body 2 and the outside of the image reading unit 9. The exterior cover 80 is, for example, a molded product of a resin material, and protects the main body 2 and the image reading unit 9 from the outside and improves the appearance of the image forming apparatus 1 and enhances its design. The function of the exterior cover 80 will be further described later.

Next, the internal structure of the image forming apparatus 1 will be described.
FIG. 2 is a vertical sectional front view schematically showing the image forming apparatus 1. Note that solid arrows in FIG. 2 indicate the sheet conveyance path and the conveyance direction. As shown in FIG. 2, a cassette type paper feed unit 3 that constitutes a paper feeding device is disposed at the lower part of the main body 2 of the image forming apparatus 1. The cassette type paper feed unit 3 includes the two-stage paper feed cassette 4 as described above. In each paper feed cassette 4, paper P such as cut paper before printing is stacked and accommodated. From the cassette type paper feed unit 3, the paper P stacked in the paper feed cassette 4 is separated and sent out one by one.

  Different paper sizes and paper types can be set in the upper and lower two-stage paper feed cassettes 4 at respective positions. For example, the upper sheet cassette 4 can store A4 plain paper, which is relatively frequently used, and the lower sheet cassette 4 can store sheets larger than A4. Alternatively, one of the upper and lower paper feed cassettes 4 can be used for multiple purposes, and OHP sheets, thick paper, thin paper, and the like can be accommodated therein. In any case, the paper size, paper type, and the like stored in the paper feed cassette 4 at each stage can be set in the image forming apparatus 1 in advance.

  The image forming apparatus 1 includes a paper transport unit 6 therein. In view of the relationship with the cassette type paper feeding unit 3, the paper transport unit 6 is located on the left as the paper feeding direction. The paper P sent out from the cassette type paper feed unit 3 is transported vertically upward in the transport path formed along the left side surface of the main body 2 by the paper transport unit 6, and the paper P sent out from the manual feed tray 5. Are transported horizontally from the right side to the left side inside the main body 2 to reach the transfer section 11 respectively.

Image formation by the image forming apparatus 1 is performed as follows.
In the main body 2, an image forming unit 10 and a transfer unit 11 are provided at a downstream position when viewed in the paper conveyance direction from the paper conveyance unit 6. Among these, the image forming unit 10 forms an electrostatic latent image of the document image based on the image data obtained by processing the read image, and further forms a toner image from the electrostatic latent image.

  A registration roller 7 is provided on the downstream side in the paper transport direction from the paper transport unit 6 and immediately upstream of the transfer unit 11. The registration roller 7 corrects the oblique feeding of the paper P and sends the paper P toward the transfer unit 11 while synchronizing with the toner image formed by the image forming unit 10. In the transfer unit 11, the toner image is transferred to the paper P that is sent while being synchronized by the registration roller 7.

  A fixing unit 12 is provided on the downstream side of the transfer unit 11 when viewed in the paper transport direction. The paper P carrying the unfixed toner image in the transfer unit 11 is sent to the fixing unit 12 where it is heated and pressurized to fix the toner image.

  Further, a discharge / branch unit 13 is provided in the vicinity of the left side surface of the main body 2 on the downstream side of the fixing unit 12 when viewed in the sheet conveyance direction. When double-sided printing is not performed (in the case of single-sided printing), the paper P discharged from the fixing unit 12 is directly discharged from the discharge / branch unit 13 to the paper discharge tray 15. When performing duplex printing, the paper P is once sent halfway from the discharge / branch unit 13 toward the paper discharge tray 15, and then the transport direction is switched and the paper P is drawn into the paper reversing unit 30. The drawn paper P is conveyed downward through a conveyance path 32 formed along the left side surface of the main body 2, and then is turned upward at the upper position of the cassette type paper feeding unit 3 to be sent to the registration roller 7. It is done. Note that a sensor 31 for detecting a positional shift in the width direction of the paper P is provided. When a position shift is detected, position correction (skew correction) is performed by the shift correction mechanism 70.

  The above is the outline of the configuration and operation of the image forming apparatus 1. In this embodiment, the structure (attachment means) of the part to which the image reading unit 9 is attached to the main body 2 has the following features.

[First structural example]
FIG. 3 is a detailed cross-sectional view illustrating a first structure example of a portion (reference numerals III and III ′) surrounded by an alternate long and short dash line in FIG. Here, a portion (hereinafter referred to as “attachment portion”) to which the image reading unit 9 is attached to the main body 2 and its peripheral configuration are shown in cross section. The mounting portion shown in FIG. 3 is located at, for example, the upper left corner (reference numeral III) of the main body 2, but the upper right corner (reference numeral III ′) may be considered symmetrically.

  The image reading unit 9 includes a box-shaped casing 90. The casing 90 includes optical parts such as a light source, a reflecting mirror, an imaging lens, and an optical reading sensor (not shown), and driving parts such as a scanning motor. Is housed. An upper surface of the housing 90 is opened, and a glass plate or the like (not shown) is fitted into the opening. The housing 90 is configured by combining parts obtained by bending a metal plate, for example.

  On the other hand, a support 20 is formed at an upper position of the main body 2, that is, a position where the image reading unit 9 is installed. The support 20 supports the image forming unit 9 from below in the main body 2 and also serves as a frame (framework) of the main body 2. The support 20 is made of, for example, a resin molded part.

  As shown in FIG. 3, a convex portion 92 is formed on the housing 90 in the attachment portion of the image reading portion 9 with respect to the main body 2. The convex portion 92 has a cylindrical shape that protrudes downward from the lower surface of the housing 90.

  On the other hand, a concave portion 22 is formed in the support 20 at a position corresponding to the convex portion 92. The concave portion 22 has a round hole shape that is recessed downward from the upper surface of the support 20, and the inner diameter thereof is larger than the outer shape of the convex portion 92. Therefore, as shown in the drawing, the convex portion 92 is fitted into the concave portion 22 in a state where the housing 90 is installed at the upper surface position of the support 20.

  Furthermore, in the present embodiment, the vibration isolating member 24 is interposed between the convex portion 92 and the concave portion 22. As the vibration isolator 24, an anti-vibration rubber (for example, natural rubber, styrene rubber, chloroprene rubber, butyl rubber, ethylene-propylene rubber, etc.) effective for reducing vibration is used.

  The anti-vibration member 24 has a shape just like an overturned hat. More specifically, the vibration isolation member 24 has a main body portion 24a that protrudes downward in the illustrated state, and the main body portion 24a has a cylindrical shape that fits inside the concave portion 22 of the support 20. Moreover, the inside of the main body portion 24a is hollow, and the hollow inside is a positioning hole 24b. In the state shown in the drawing, the positioning hole 24b opens upward, and the convex portion 92 of the housing 90 is fitted from above through the opening. A flange portion 24c is formed on the entire circumference around the main body portion 24a so as to project in the radial direction. In the state shown in the drawing, the flange portion 24 c is located between the upper surface of the support 20 and the lower surface of the housing 90 and elastically supports the housing 90.

  As described above, in the present embodiment, the convex portion 92 of the casing 90 is fitted into the concave portion 22 of the support body 20 in a state where the casing 90 is installed above the support body 20, and is further prevented around the concave portion 22. The vibration member 24 is installed. Furthermore, in the present embodiment, the outer surface of the housing 90 and the support 20 is integrally covered with the exterior cover 80 in a state where the housing 90 is supported by the support 20. And the structure where the support body 20 is mutually restrained is employ | adopted. Therefore, in this embodiment, both can be reliably fixed without using fastening members such as fixing pins and bolts that directly fix the housing 90 and the support 20.

[Method for Manufacturing Image Forming Apparatus]
Next, a procedure for attaching the housing 90 performed in the manufacturing process of the image forming apparatus 1 will be described. FIG. 4 is a diagram schematically showing a procedure for attaching the housing 90 to the support 20. In the manufacturing process of the image forming apparatus 1, the main body 2 and the casing 90 are completed as described above, and the procedure for attaching the casing 90 to the support 20 will be mainly described below.

  In the manufacturing process of the image forming apparatus 1, the vibration isolating member 24 is fitted into the recess 22 of the support 20 before the housing 90 is attached as illustrated. In this state, for example, the operator positions the casing 90 above the support 20 and fits the convex portion 92 protruding from the lower surface thereof into the concave portion 22 of the support 20 (positioning hole 24b of the vibration isolation member 24). The housing 90 can be installed (placed). Thus, in this embodiment, since the convex part 92 fits into the concave part 22 through the positioning hole 24b when the housing 90 is attached, it is not necessary to provide another member in particular for positioning both.

  And when the housing | casing 90 is installed in the support body 20 as mentioned above, the exterior cover 80 is attached from these outer sides. The exterior cover 80 covers the side surface of the main body 2 including the support body 20, the side surface and front and rear surfaces of the housing 90, and covers the support body 20 and the housing 90 so as to go around to the upper side of the housing 90. For this reason, the housing | casing 90 installed in the upper surface of the support body 20 does not remove | deviate upward, and the housing | casing 90 does not shift | deviate with respect to the support body 20 in a horizontal direction (front-back, left-right).

Next, the function of the vibration isolation member 24 in the image forming apparatus 1 will be described.
As described above, the vibration isolation member 24 is provided between the support 20 and the housing 90, thereby suppressing the vibration generated in the main body 2 from being transmitted from the support 20 to the housing 90. To do. For example, during image formation, vibration due to the operation of the image forming unit 10 and vibration due to the paper feeding unit 3, the paper transport unit 6, and the like are generated in the main body 2. Such vibration is attenuated by the vibration isolation member 24. 90 does not vibrate or resonate with the vibration of the main body 2 (or the support body 20).

  For this reason, for example, there is a situation in which an image reading unit 9 reads a document image while conveying a document by the document feeder 8 and an image forming unit 10 forms an image based on the read image in parallel. However, the housing 90 does not vibrate due to the vibration generated in the main body 2. Accordingly, the operation of reading the original image is stably and accurately performed by the optical system component housed in the housing 90, and as a result, the quality of printing based on the read image data is maintained at a high level.

  In this regard, in the structure in which the support 20 and the housing 90 are fixed by some fastening member, there is a high possibility that the influence of vibration generated in the main body 2 appears in the read image data. The original image can be read systematically without being affected.

  Also preferably, between the inner surface of the outer cover 80 and the outer surface (side surface, front and rear surface and upper surface) of the housing 90, or between the inner surface of the outer cover 80 and the outer surface (side surface, front and rear surface and upper surface) of the support body 20. In addition, for example, a sheet-like vibration isolating member can be installed. In this case, the vibration of the main body 2 or the support 20 can be more effectively prevented from being transmitted to the housing 90 via the exterior cover 80.

Next, the structure of the attachment part of the housing 90 will be described with some other examples. In addition, below, the same code | symbol shall be attached | subjected about the member and site | part etc. which were already demonstrated by the 1st structural example mentioned above, and the duplicate description shall be abbreviate | omitted. In addition, a duplicate description of items (such as assembly work) common to the first structure example is omitted.
[Second structural example]
FIG. 5 is a longitudinal sectional view showing a second structural example of the attachment portion of the housing 90 with respect to the main body 2. In the second structural example, a hole 26 is formed in the support 20 instead of the recess 22. Moreover, in order to form the hole part 26, the upper surface of the support body 20 in the attachment part is comprised by the plate-shaped member 20a which has fixed thickness (about several mm). The hole 26 is formed so as to penetrate the plate-like member 20 a, and the vibration isolation member 24 is attached so that the main body 24 a is fitted into the hole 26.

  In the second structure example, a flange portion 24 d is added to the main body portion 24 a of the vibration isolation member 24. The flange portion 24d is formed on the entire circumference so as to protrude in the radial direction from the lower end portion of the main body portion 24a. In the state where the vibration isolator 24 is fitted in the hole 26 as shown in the drawing, the flange 24d is caught on the lower surface of the plate-like member 20a, thereby preventing the vibration isolator 24 from dropping from the hole 26. . The flange 24d can be elastically deformed together with the main body 24a so that the inside of the hole 26 can be satisfactorily passed when the vibration isolator 24 is fitted into the hole 26.

  In the second structure example, similarly to the first structure example, vibration generated in the main body 2 is effectively prevented from being transmitted from the support 20 to the housing 90, and the reading operation in the image reading unit 9 is stably performed. be able to. In addition, since the vibration isolation member 24 is hooked on the support 20 by the flange 24d, the vibration isolation member 24 is accidentally dropped from the support 20 when the casing 90 is attached to the support 20. Does not occur, and the mounting workability is further improved.

[Third structure example]
Next, FIG. 6 is a longitudinal sectional view showing a third structural example of the attachment portion of the housing 90 to the main body 2. In this third structure example, the unevenness relationship between the housing 90 and the support 20 is opposite to that of the first and second structure examples.

  Specifically, in the third structure example, a convex portion 28 is formed on the upper surface of the support 20, and the convex portion 28 protrudes upward from the upper surface of the support 20. On the other hand, a recess 94 is formed on the lower surface of the housing 90, and the recess 94 is formed so as to be recessed upward (inward) from the lower surface of the housing 90.

  In the third structure example, the shape of the vibration isolation member 24 is substantially the same as that in the first structure example, but the arrangement is upside down. That is, the main body portion 24a of the vibration isolating member 24 is fitted into the concave portion 94 of the housing 90, and the convex portion 28 of the support body 20 is fitted into the positioning hole 24b.

In the third structure example, the assembly process of the image forming apparatus 1 can be performed in the following two patterns.
(1) A pattern in which the vibration isolation member 24 is attached to the convex portion 92 of the support 20 before the housing 90 is attached to the support 20. In this pattern, unlike the case of the first structure example, the housing 90 is positioned by using the concave-convex relationship between the concave portion 94 of the housing 90 and the main body portion 24a of the vibration isolation member 24.

(2) A pattern in which the vibration isolation member 24 is fitted into the recess 94 of the housing 90 before the housing 90 is attached to the support 20. In this pattern, as in the case of the first structure example, the housing 90 is positioned by using the uneven relationship between the positioning hole 24b of the vibration isolating member 24 and the convex portion 28 of the support 20. However, the positional relationship of the unevenness is upside down from the first structure example.

  In any case, in the third structure example, similarly to the first structure example, vibration generated in the main body 2 is effectively prevented from being transmitted from the support 20 to the housing 90, and the reading operation in the image reading unit 9 is prevented. It can be performed stably.

  The present invention can be implemented with various modifications and replacements without being limited to the above-described embodiments and structural examples. The internal structure of the image forming apparatus 1 and the forms of various mechanical components are merely preferred examples, and the present invention is not limited to the illustrated ones.

  Further, in the second structural example of FIG. 5, the support body 20 is hollow at the mounting position of the housing 90 and the plate-like member 20 a is installed at the upper surface position. However, the support body 20 is not hollowed in this way. Alternatively, a recess that matches the cross-sectional shape of the flange 24d may be formed in the support 20, and the vibration isolation member 24 may be fitted therein. In the second structure example, as shown in the third structure example, the concave-convex relationship between the support 20 and the housing 90 can be reversed up and down.

  In attaching the housing 90 to the main body 2, the above first to third structure examples may be appropriately combined at a plurality of locations. Further, the mounting position of the housing 90 with respect to the main body 2 is not limited to the left and right corners of the main body 2 and can be set to other appropriate positions.

  In the embodiment, an image forming apparatus having a document conveying device is taken as an example. However, the present invention is also applied to an image forming device that reads a document using a document press without using a document conveying device. can do. Even in this case, even if vibration occurs due to the conveyance of the paper or the image forming operation in the process of reading the document, the vibration is not easily transmitted to the housing, so that the document can be stably read by the image reading unit.

  In addition, the various members and parts described in the embodiment are all preferable examples, and these can be appropriately modified and implemented.

1 is a perspective view illustrating an image forming apparatus according to an embodiment from an upper right front side. 1 is a vertical sectional front view schematically showing an image forming apparatus. FIG. 3 is a detailed cross-sectional view illustrating a first structure example of a portion (reference numerals III and III ′) surrounded by an alternate long and short dash line in FIG. 2. It is the figure which showed roughly the attachment procedure of the housing | casing with respect to a support body. It is a longitudinal cross-sectional view which shows the 2nd structural example of the attaching part of the housing | casing with respect to a main body. It is a longitudinal cross-sectional view which shows the 3rd structural example of the attaching part of the housing | casing with respect to a main body.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Image forming apparatus 2 Main body 3 Cassette type paper feed part 4 Paper feed cassette 6 Paper conveyance part 8 Document conveyance apparatus 9 Image reading part 10 Image formation part 11 Transfer part 12 Fixing part 20 Support body 22 Concave part 24 Anti-vibration member 90 Case 92 Convex

Claims (4)

An image forming apparatus including an image reading unit that optically reads an image of a document and an image forming unit that forms an image based on image data read by the image reading unit.
A box-shaped main body for accommodating the image forming unit;
A housing in which an optical system part that performs an operation of reading an image of a document is housed as the image reading unit;
A support formed in an upper position of the main body and supporting the housing in a state of being placed;
The projection is formed on one of the support and the casing at the mounting position where the casing is attached to the support, and the projection formed on the other side is received, and the support is supported in this receiving state. Mounting means having a recess for positioning the body and the housing relative to each other;
An anti-vibration member that is installed between the convex portion and the concave portion at the mounting position and reduces vibration transmitted from the support to the housing;
An exterior member that covers at least the support and the outer surface of the housing in a state where the housing is attached to the support, and that restrains the support and the housing from each other is provided. Image forming apparatus. The image forming apparatus according to claim 1,
The vibration isolator is
A body portion that fits into the recess at the mounting position;
An image forming apparatus comprising: a positioning hole that is formed in the main body portion in accordance with an outer shape of the convex portion and that positions the support and the housing relative to each other by receiving the convex portion. . In a manufacturing method of an image forming apparatus including an image reading unit that optically reads an image of a document and an image forming unit that forms an image based on image data read by the image reading unit,
An optical system component that performs an operation of reading an image of a document as the image reading unit is stored in a predetermined housing, and a support is formed at an upper position of a box-shaped main body that stores the image forming unit.
A protrusion is formed in advance on one of the support and the housing at an attachment position where the housing is attached to the support, and a recess capable of receiving the protrusion on the other is formed. And
In the process of attaching the case to the support, the support and the case are positioned relative to each other by fitting the recess and the protrusion.
At the time of mounting the housing, an anti-vibration member that reduces vibration transmitted from the support to the housing is interposed between the convex portion and the concave portion at the mounting position,
An exterior member covering at least the support and the outer surface of the housing is attached to the support with the housing attached, and the support and the housing are mutually restrained by the exterior member. A method for manufacturing an image forming apparatus. The method of manufacturing an image forming apparatus according to claim 3.
A method of manufacturing an image forming apparatus in which the support and the housing are mutually restrained only by the exterior member without fixing the housing to the support by a fastening member when the housing is attached.

Images