JPH11119497A - Image forming device - Google Patents

Abstract

(57) [Summary] [Object] To provide an image forming apparatus capable of preventing a housing frame from shaking due to a scanning operation of an image reading unit and securing high image reading accuracy. A reader (image reading unit) 1 and a printer (image forming unit) 2 are vertically arranged independently of each other,
Mounting table (image reading unit mounting table) 4 for mounting the reader 1 on a storage rack (housing frame body) 3 for storing the printer 2 and a printer mounting table (image forming unit mounting table) 5 for mounting the printer 2 An image forming apparatus in which a printer mounting table 5 is mounted on a bottom plate 6 of a storage rack 3 integrally with the printer 2 so as to be movable toward the apparatus main body, and the reader mounting table 4 and the printer 2 is fixed to the upper part by a fixing member 27. According to the present invention, since the reader mounting table 4 and the upper portion of the printer 2 are fixed by the fixing member 27, the shaking of the storage rack 3 due to the scanning operation of the reader 1 can be prevented, and the reader 1 has high image reading accuracy. can do.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image forming apparatus for forming a recording sheet by arranging a digital image reading section and an image forming section vertically, and more particularly to a discharge tray having an image reading section and an image forming section. The present invention relates to an image forming apparatus disposed between the image forming apparatus and an image forming apparatus.

[0002]

2. Description of the Related Art FIGS. 10 and 11 show a conventional example of an image forming apparatus.

FIG. 10 is a perspective view of a conventional image forming apparatus, and FIG. 11 is a right side view of the image forming apparatus. As shown in FIG. , A printer 2 for forming an image based on image information read by the reader 1, and a storage rack 3 for storing the reader 1 and the printer 2.

Here, the arrangement of the reader 1, the printer 2, and the storage rack 3 will be described.

The storage rack 3 is provided with a reader mounting table 4 and a printer mounting table 5.
Is configured to be movable on the rack bottom plate 6. The reader 1 is mounted on the reader mounting table 4 and the printer 2 is mounted on the printer mounting table 5 at predetermined positions by positioning members (not shown).

The paper discharge tray 7 is formed at a part of the top cover 21 on the upper surface of the printer 2, and the recording paper is discharged onto the paper discharge tray 7.
By discharging the recording paper to the paper discharge tray 7 formed between the reader 1 and the printer 2, the area occupied by the apparatus can be reduced. Further, since the sheet feeding unit 15 adopts a front loading system in which a sheet cassette is inserted from the front of the apparatus main body, the sheet feeding operation can be performed from the front of the main body.

[0007]

However, in the above-described conventional image forming apparatus, the storage rack 3 is formed in a U-shape, and the load of the reader 1 is reduced by the rear portion 3 of the storage rack 3.
As a result, the upper part of the storage rack 3 swings left and right due to the scanning operation of the reader 1 (the operation in the left and right direction when viewed from the front of the apparatus main body), and the image reading accuracy is reduced. There is also a problem of giving the user a sense of visual instability.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has as its object to form an image forming apparatus capable of preventing the housing frame from shaking due to the scanning operation of the image reading section and ensuring high image reading accuracy. It is to provide a device.

[0009]

In order to achieve the above object, according to the first aspect of the present invention, an image reading section and an image forming section are vertically arranged independently, and the image reading section and the image forming section are accommodated. An image reading unit mounting table for mounting the image reading unit and an image forming unit mounting table for mounting the image forming unit are provided in a housing frame to be mounted, and the image forming unit mounting table is integrated with the image forming unit. In an image forming apparatus having the bottom plate of the housing frame body movably mounted on the front side with respect to the apparatus main body, the image reading unit mounting table and the upper part of the image forming unit are fixed by a fixing member. Features.

According to a second aspect of the present invention, in the first aspect, the fixing member is screwed to the image reading unit mounting table and the image forming unit, and the image reading unit mounting table and the image It is characterized in that the screw holes in the forming portion are elongated in any two directions of up and down, left and right or front and back.

According to a third aspect of the present invention, in the first aspect, the fixing member is a first fixing member fixed to the image reading unit mounting table and a second fixing member screwed to the image forming unit. The first fixing member and the second fixing member are screwed, and the image reading unit mounting table and the first fixing member, the image forming unit and the second fixing member are fixed to each other. The screw holes of the fixing member, the first fixing member, and the second fixing member may be elongated in three directions of up, down, left, right, and front and rear, respectively.

According to a fourth aspect of the present invention, in the first aspect, the fixing member is a first fixing member fixed to the image reading unit mounting table and a second fixing member screwed to the image forming unit. The image reading unit mounting table and the first fixing member, and the image forming unit and the second fixing member.
Screw holes of the fixing member are elongated in two directions of left and right and front and rear, respectively, the second fixing member has a fitting pin projecting rearward of the device, and the first fixing member Is characterized by having a vertically long elongated fitting hole to be fitted with the fitting pin.

Therefore, according to the present invention, since the image reading section mounting table and the upper portion of the image forming section are fixed by the fixing member, it is possible to prevent the housing frame from shaking due to the scanning operation of the image reading section. High image reading accuracy can be secured in the reading unit.

[0014]

Embodiments of the present invention will be described below with reference to the accompanying drawings.

Embodiment 1 FIG. 1 is a perspective view of an entire image forming apparatus according to Embodiment 1 of the present invention, FIG. 2 is a schematic sectional view of the image forming apparatus, and FIG. 3 is a right side of the image forming apparatus. FIG. 4 is a perspective view showing a state where an image forming unit of the image forming apparatus is pulled out, and FIG. 5 is a perspective view of a fixing member.

In the image forming apparatus according to the present embodiment, as in the prior art, the image forming apparatus main body includes a reader 1 that reads image information of a document and processes the digital image signal,
The printer 1 includes a printer 2 that forms an image based on image information read by the reader 1, and a storage rack 3 that stores the reader 1 and the printer 2. In addition, leader 1
The arrangement of each unit of the printer 2 and the storage rack 3 is the same as that of the related art, and a description thereof will be omitted.

In this embodiment, the storage rack 3
The reader mounting table 4 and the upper part of the printer 2 are fixed by a fixing member 27. The end surface 27 a of the fixing member 27 forms a surface parallel to the reader mounting table 4 of the storage rack 3, and the fixing member 27 is fixed to the back surface of the reader mounting table 4 by screws 35. Also, the fixing member 2
7 forms a surface parallel to the left side surface of the top cover 21 of the printer 2, and the fixing member 27
1 is fixed to the left side surface by a screw 36. As shown in FIG. 5, two long slot-like screws 27c in the left-right direction (X direction in FIG. 5) for inserting the screws 35 are formed on the end surface 27a of the fixing member 27, and the end surface 27b is formed. A long slot-like two screw holes 27d are formed in a depth direction (Y direction in FIG. 5) before the screw 36 is inserted. The screw holes 27c and 27d respectively form the reader mounting table 4 and the top. It is configured to be able to absorb the displacement of the mounting position with the cover 21.

Next, mechanisms in the reader 1 and the printer 2 will be described.

The reader 1 includes a control panel 8 for operating the image forming apparatus, a platen cover 10 for setting an original on the apparatus main body and pressing and holding the original, and an image scanning apparatus for scanning the image of the original. Mechanism 9
And a controller 11 for processing the image information of the document by a digital signal. The controller 11 performs the operation of the image forming apparatus, and simultaneously processes the image information of the document by the digital signal and transmits it to the printer 2.

The image scanning mechanism 9 includes a first mirror base 28
And a second mirror base 29. Each of the mirror bases 28 and 29 reads an image while moving rightward in FIG. When the image reading is completed, the mirror base 28,
29 returns to the home position at the left end of FIG. As described above, when the mirror bases 28 and 29 move in the left and right directions, a force in the left and right directions is applied to the reader 2 and the accommodation rack 3 tends to swing left and right with the vicinity of the lower part 3a of the column as a fulcrum. Power is added.

However, in the image forming apparatus according to the present embodiment, since the reader mounting table 4 of the storage rack 3 is fixed to the upper portion of the printer 2 via the fixing member 27, the scanning operation of the reader 1 is performed. Shaking of the storage rack 3 is prevented, and the reader 1 can ensure high image reading accuracy.

The printer 2 receives a digital signal input from the reader 1 and irradiates a laser beam to the photoconductor to write an image (laser scanner) 12, and writes the image to the photoconductor. An image forming section 13 for forming a toner image and transferring the formed toner image to a sheet after forming an electrostatic latent image, a fixing device 14 for fixing the toner image, and a paper feeding unit 15 located at a lower portion of the apparatus are provided. Have been.

Next, an image forming operation will be described. A sheet is fed from a sheet feeding unit 15, and the sheet is conveyed to an image forming unit 13 through a sheet conveying path 16 arranged on a side of the apparatus main body. The toner image formed on the body is transferred to paper. Then, the sheet carrying the toner image is fixed to the fixing device 14.
Then, the toner image fixed on the sheet is discharged to the sheet tray 7 provided on the upper surface of the printer 2 via the reversing path 17.

Next, jam clearance and maintenance in the printer 2 will be described.

A front door 20 is provided on the front surface of the apparatus main body so as to be openable and closable.
Jam and maintenance can be performed.

A right door 18 and a left door 19 are provided on both sides of the main body so as to be openable and closable.
8 and 19 are opened to perform jam processing in the sheet transport path 16 and the reversing path 17. A removable top cover 21 is provided on the upper surface of the apparatus main body, and the work can be performed by removing the top cover 21 during maintenance of the laser scanner 12. At this time, as shown in FIG. 4, the printer 2 is configured to be able to be pulled out to the near side independently of the storage rack 3, so that the printer 2 can be pulled out for easy maintenance. When the printer 2 is pulled out to the near side, the fixing screw for fixing the fixing member 27 to the reader mounting table 4 and the top cover 21 is removed, the fixing member 27 is removed, and then the printer 2 is pulled out. When the printer 2 is stored in the storage rack 3 again, the fixing member 27 is fixed with screws.

Here, the configuration of the storage rack 3 will be described.

The bottom plate 6 is provided with four casters 22 for moving the main body, and when the main body is installed, the adjuster (not shown) prevents the main body from moving. The printer mounting table 5 is provided with four rollers 24 for moving in the grooves 23 of the bottom plate 6, and the casters 25 are grounded so that the printer 2 is grounded in order to prevent the printer 2 from falling down when pulled out.
Is provided on the near side.

<Second Embodiment> Next, a second embodiment of the present invention will be described with reference to FIGS. FIG. 6 is a sectional view of a main part of the image forming apparatus according to the present embodiment, and FIG. 7 is an exploded perspective view of a fixing member.

As shown in FIG. 6, the fixing member (upper) 30 is fixed to the back surface of the reader mounting table 4 by screws 37. 7, two screw holes 30a long in the X direction) and two screw holes 30b long in the vertical direction (Z direction in FIG. 7) when viewed from the front of the main body, and the screw 37 is inserted into the screw hole 30a. I do.

The fixing member (lower) 31 is fixed to the left side surface of the top cover 21 of the printer 2 by screws 38. The fixing member (lower) 31 has two screw holes 31a long in the front-rear direction (Y direction in FIG. 7). And two circular taps 31b are formed, and the screw 38 is inserted into the screw hole 31a.

As shown in FIG. 6, the fixing member (upper) 30 and the fixing member (lower) 31 are fixed to each other by the fixing member (upper).
The screw 39 inserted into the screw hole 30b formed in the fixing member 30 is fixed by screwing the screw 39 into a tap 31b formed in the fixing member (lower). It is a long hole long in the Z direction).

As described above, the screws for fixing the reader mounting table 4 and the fixing member (upper) 30, the ceiling cover 21 and the fixing member (lower) 31, and the fixing member (upper) 30 and the fixing member (lower) 31. Screw holes 30 for inserting 37, 38, 39
Since a, 30b, and 31a are each configured as a long hole elongated in three directions of X, Z, and Y in FIG. 7, even when the positional accuracy between the reader mounting table 4 and the top cover 21 is poor, the fixing member (upper) 30 is used. And the fixing member (lower) 31 can be easily attached.

Third Embodiment Next, a third embodiment of the present invention will be described with reference to FIGS. FIG. 8 is a perspective view of the image forming apparatus according to the present embodiment, and FIG. 9 is an exploded perspective view of the fixing member.

In this embodiment, as shown in FIG. 8, the fixing member (1) 32 is screwed to the back surface of the reader mounting table 4, but as shown in FIG. A screw hole 32a for inserting a screw (not shown) is formed, and the screw hole 32a is a long hole that is long in the left-right direction (X direction in FIG. 9) when viewed from the front of the main body. Further, the fixing member (1) 32 is formed with a fitting hole 32b which is long in the vertical direction (Z direction in FIG. 9).

On the other hand, the fixing member (2) 33 is
The fixing member (2) 33 is formed with a long hole 33a long in the front-rear direction (Y direction in FIG. 9), and a fitting pin 33b projects from the fixing member (2) 33. Has been established.

When the fixing member (1) 32 is fixed to the reader mounting table 4 and the fixing member (2) 33 is fixed to the top cover 21 of the printer 2, the fixing member (2) 3
The fitting pin 33 b protruding from 3 is fitted in the fitting hole 32 b of the fixing member (1) 32. By the fitting of the fitting hole 32b of the fixing member (1) 32 and the fitting pin 33b of the fixing member (2) 33, the horizontal direction of the fixing member (1) 32 and the fixing member (2) 33 (FIG. 9) (X direction) is prevented, so that the accommodation rack 3 can be prevented from swinging in the left-right direction due to the reading operation of the reader 1.

Here, a screw hole 32 through which a screw for fixing the reader mounting table 4 and the fixing member (1) 32 is inserted.
a, a screw hole 33a for fixing the top cover 21 and the fixing member (2) 33, a fitting pin 33 of the fixing member (1) 32
Since the fitting holes 32b of the fixing member (2) 33 to which b fits form long holes in three directions of X, Z, and Y, respectively, the positional accuracy of the reader mounting table 4 and the top cover 21 is poor. Even in this case, the fixing member (1) 32 and the fixing member (2) 33 can be attached without difficulty.

The fixing member (1) 32 and the fixing member (2)
Since 33 is inserted by the fitting pin 33b, it is not necessary to remove the fixing members (1) 32 and (2) 33 even when the printer 2 is pulled out from the storage rack 3, and maintenance can be performed in a short time. Can be.

[0040]

As apparent from the above description, according to the present invention, the image reading unit and the image forming unit are vertically arranged independently, and the housing frame for housing the image reading unit and the image forming unit. An image reading unit mounting table for mounting the image reading unit, and an image forming unit mounting table for mounting the image forming unit, wherein the image forming unit mounting table is integrated with the image forming unit in the housing frame. In the image forming apparatus in which the image reading unit mounting table and the upper part of the image forming unit are fixed with a fixing member in the image forming apparatus having An effect is obtained that high image reading accuracy can be secured by preventing the housing frame from shaking due to the operation.

[Brief description of the drawings]

FIG. 1 is a perspective view of an image forming apparatus according to Embodiment 1 of the present invention.

FIG. 2 is a schematic sectional view of the image forming apparatus according to Embodiment 1 of the present invention.

FIG. 3 is a right side view of the image forming apparatus according to Embodiment 1 of the present invention.

FIG. 4 is a perspective view showing a state in which an image forming unit of the image forming apparatus according to Embodiment 1 of the present invention is pulled out.

FIG. 5 is a perspective view of a fixing member of the image forming apparatus according to Embodiment 1 of the present invention.

FIG. 6 is a sectional view of a main part of an image forming apparatus according to Embodiment 2 of the present invention.

FIG. 7 is an exploded perspective view of a fixing member of the image forming apparatus according to Embodiment 2 of the present invention.

FIG. 8 is a perspective view of an image forming apparatus according to Embodiment 3 of the present invention.

FIG. 9 is an exploded perspective view of a fixing member of the image forming apparatus according to Embodiment 3 of the present invention.

FIG. 10 is a perspective view of a conventional image forming apparatus.

FIG. 11 is a right side view of a conventional image forming apparatus.

[Explanation of symbols]

REFERENCE SIGNS LIST 1 reader (image reading unit) 2 printer (image forming unit) 3 storage rack (storage frame) 4 reader mounting table (image reading unit mounting table) 5 printer mounting table (image forming unit mounting table) 6 rack bottom plate 27 fixing member 27c, 27d Screw hole (screw hole) 30 Fixing member (upper) (first fixing member) 30a, 30b Screw hole (screw hole) 31 Fixing member (lower) (second fixing member) 31a Screw hole ( 32 fixing member (1) (first fixing member) 32a screw hole (screw hole) 32b fitting hole 33 fixing member (2) (second fixing member) 33a screw hole (screw hole) 33b Mating pin

Claims (4)

[Claims] An image reading unit that vertically arranges an image reading unit and an image forming unit, and mounts the image reading unit on a housing frame that houses the image reading unit and the image forming unit; An image forming unit mounting table for mounting the image forming unit is provided, and the image forming unit mounting table is mounted on the bottom plate of the housing frame so as to be movable with respect to the apparatus body toward the front side integrally with the image forming unit. An image forming apparatus comprising: an image forming unit, wherein the image reading unit mounting table and an upper part of the image forming unit are fixed by a fixing member. 2. The fixing member is screwed to the image reading unit mounting table and the image forming unit, and the screw holes for the image reading unit mounting table and the image forming unit are vertically, horizontally, or vertically. 2. The image forming apparatus according to claim 1, wherein the hole is formed in any one of two directions. 3. The fixing member is divided into a first fixing member fixed to the image reading unit mounting table and a second fixing member screwed to the image forming unit. The fixing member and the second fixing member are screwed, and the image reading unit mounting table and the first fixing member, the image forming unit and the second fixing member, the first fixing member and the second fixing member are fixed. The screw holes of the fixing member are 3
The image forming apparatus according to claim 1, wherein the image forming apparatus has a long hole in the direction. 4. The image reading unit, wherein the fixing member is divided into a first fixing member fixed to the image reading unit mounting table and a second fixing member screwed to the image forming unit. Screw holes of the mounting table and the first fixing member, and the screw holes of the image forming unit and the second fixing member are left and right and front and rear, respectively.
The second fixing member has a fitting pin protruding rearward of the apparatus, and the first fixing member has a vertically long slot that fits with the fitting pin. The image forming apparatus according to claim 1, wherein the image forming apparatus has a shape-shaped fitting hole.