JP2001042586A - Image forming device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily perform the maintenance of a control part and to secure accessibility to a document and sheet material by covering one part of a control substrate with a conductive structural body, grounding either the control substrate or the structural body and supporting an operation part by a top surface of the structural body. SOLUTION: Since a communication control substrate 300, a signal switching substrate 329, a printed circuit board 330, a 2nd communication control substrate 331 and a digital communication control substrate 332 in a facsimile device cause radiation noise, they are shielded by a cover 128 obtained by making conductive metal a box and grounded to GND(ground) in order to prevent the radiation noise. The cover 128 on the top surface of which an operation part 105 is installed and on the right side of which a hand set pedestal is installed simultaneously functions as a supporting housing. Thus, in the case of performing the maintenance of the control substrate, a user need not go round to the backside of the device, so that the maintenance is easily performed and the accessibility to the document S and the sheet material P is secured.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention has an image reading apparatus for reading a document on which image information is described, a function of copying image information output from a facsimile apparatus or a computer as well as a function of copying an ordinary sheet material. The present invention relates to an image forming apparatus.

[0002]

2. Description of the Related Art The general structure of a conventional image forming apparatus will be briefly described with reference to FIGS. FIG. 3 is a perspective view of a conventional image forming apparatus, and FIG. 4 is a sectional view of the same image forming apparatus.

First, an outline of the entire image forming apparatus will be described. 3 and 4, reference numeral 201 denotes an apparatus main body; 202, an original mounting table configured to stack a plurality of originals S; 203, an image reading unit that reads image information of the original S; A recording apparatus main body composed of a printer; 205, an operation unit including a display unit and input keys; 206, a document transport unit; 207, a document pressing unit;
08 is a contact image sensor, 209 is a document ejection tray, 210 is a laser scanner, 211 is an image forming unit,
Reference numeral 12 denotes a cassette sheet feeding unit, 213 denotes an upper sheet discharge tray configured to stack a plurality of sheets P on the upper cover of the apparatus main body 201, 214 denotes a cartridge cover, and 215 denotes an ADF (automatic document feeder). ) Cover, 216 is an outer document guide, 217 is a document pressing plate, 218 is an inner document guide, 219 is a partition between the laser scanner 210 and the recording apparatus main body 204, 220 is a control unit having a control board 220a of the image forming apparatus, Reference numeral 221 denotes a sheet conveyance unit, 222 denotes a front cover, 223 denotes a paper discharge cover, and 224 denotes a registration conveyance unit.

[0004] This configuration is particularly advantageous in that a document placing table 202, a document discharge tray 209, a sheet discharge tray 213, an operation unit 205, and a cassette paper supply unit 21 are provided on the front side of the apparatus main body 201.
Since the printer 2 is disposed, the user can easily operate the apparatus and access the document S and the sheet material P. Also, the document placing table 202, the document discharge tray 209, the sheet discharge tray 2
Since the device 13 is disposed inside the apparatus main body 201, the installation space for the apparatus is small. Further, since the sheet material is discharged with the recording surface on the back side, it can be output in the order of pages when there are a plurality of sheet materials P.

[0005]

However, in the above-described image forming apparatus, since the control unit 220 of the apparatus is disposed behind the apparatus main body 201, the control board 220
There is a problem that it is difficult to access the control unit 220 when performing the maintenance of “a”.

An optional control board 2 for increasing the number of communication lines and outputting a computer image.
When the control unit 220 is added to the control unit 220, the control unit 220 becomes large in the height direction of the apparatus, and there is a problem that the operability of the apparatus and the accessibility to the document S and the sheet material P deteriorate. .

Therefore, the present invention solves the above problems,
An object of the present invention is to provide an image forming apparatus in which maintenance of a control unit can be easily performed, and operability of the apparatus and accessibility to a document S and a sheet material P can be maintained well.

[0008]

The present invention, in order to achieve the above object, is an image forming apparatus characterized by the following constitution. (1) An image forming apparatus comprising: an image reading device that reads a document on which image information is described; an image forming unit that records the image information on a sheet material; and an operation unit that operates a plurality of image forming modes. At least a part of a control board that controls the image forming apparatus is covered with a conductive structure,
An image forming apparatus, wherein one of the control substrate and the structure is connected to GND, and the operation unit is supported by a top surface of the structure.

(2) The image forming apparatus according to (1), wherein the control board having the image forming apparatus is a plurality of control boards that are detachable and control different functions. A facsimile machine characterized in that one of them is a board for controlling communication of the facsimile machine.

(3) The structure according to any one of (1) to (2), wherein the structure including the operation section and the control board is arranged on one side surface of the image forming apparatus. Image forming device.

(4) The structure according to any one of (1) to (3), wherein the structure including the operation section and the control board is disposed substantially in parallel to the direction of conveying the original and the sheet material. The image forming apparatus as described in the above.

(5) The image forming apparatus according to any one of (1) to (4), wherein a telephone table is arranged on the same side of the image forming apparatus on which the structure is installed.

(6) When the plurality of control boards include a control board that needs to be maintained after being installed in the image forming apparatus, the control board is mounted on an exterior surface of the image forming apparatus. The image forming apparatus according to any one of (1) to (5), wherein the image forming apparatus is arranged at a closest position.

(7) When there are a plurality of control boards requiring maintenance, the control boards are arranged in parallel at a position closest to an exterior surface of the image forming apparatus (1).
The image forming apparatus according to any one of (1) to (6).

(8) A control board for selecting and switching control signals of the plurality of control boards is disposed at the center of the plurality of control boards, wherein (1) to (7). An image forming apparatus according to claim 1.

(9) An image forming apparatus according to (1) to (8), wherein the image forming means is an electrophotographic process using a laser beam.

(10) An image forming apparatus according to any one of (1) to (8), and communication means for transmitting an image received from a communication line to the image forming apparatus to form the received image. Facsimile machine.

(11) An image reading / recording apparatus comprising: the image forming apparatus according to (1) to (8); and means for recording an image read by the image reading means in the image forming apparatus.

[0019]

According to the present invention, in a device having a plurality of boards for optional functions such as addition of a communication line, a control board of the apparatus and a plurality of option boards are collectively arranged in a conductive structure. . Further, the structure is arranged on one side of the device, and the operation panel is supported on the top surface of the structure. With the above configuration, it is possible to provide an image forming apparatus capable of improving the maintainability of the option board and suppressing the height of the apparatus, and at the same time, reliably supporting the operation panel.

[0020]

(Embodiment 1) An example in which the present invention is applied to a facsimile apparatus as Embodiment 1 according to the present invention will be specifically described with reference to the drawings. Here, the description will be made in the following order. Overview of the entire facsimile machine Configuration of image reading unit for reading image information Configuration of cassette paper feeding unit Configuration of image forming unit for recording received information Configuration of control unit Concept of image formation

[Overview of Facsimile Apparatus] First, an overview of an entire facsimile apparatus will be described as an example of an image forming apparatus constructed according to the present invention with reference to FIGS. FIG. 1 is a perspective view of a facsimile apparatus of the present invention, and FIG. 2 is a sectional view of the same facsimile apparatus.

First, an outline of the entire facsimile apparatus will be described. 1 and 2, reference numeral 101 denotes an apparatus main body;
Is a document table configured to be able to stack a plurality of documents S, 103 is an image reading unit that reads image information of the document S, 104 is a recording device main body composed of a laser beam printer, 105 is a display unit and input An operation unit including keys and the like; 106, a document discharge tray; 110, a laser scanner; 111, an image forming unit; 112, a cassette paper feed unit; 120, an upper discharge unit;
Is an upper discharge tray, 126 is a lower discharge tray, 115 is a discharge flapper that switches the transport path between the upper discharge unit 120 side and the lower discharge unit 125 side, and 116 performs maintenance of a control board in the facsimile machine. It is a light cover that opens and closes at the time.

[Configuration of Image Reading Unit] Image reading unit 103
The document S stacked on the document table 102 is separated one by one by a pair of separation rollers 103a pressed against each other, and is conveyed to the close contact type image sensor 103c by a pair of conveyance rollers 103b pressed against each other. Further, after reading the image information of the original S while pressing the original S against the contact type image sensor 103 by the original pressing portion 103d, the original discharge tray 10 is pressed by the pair of original discharge rollers 103e pressed against each other.
6 is configured to be discharged.

The document table 102 is provided with a slider 102a slidable in a direction perpendicular to the direction in which the document S is transported (the width direction of the document S), and the document S stacked on the document table 102 by the slider 102a. Both sides can be aligned. If the original S is a long original, the extension original tray 102b is opened to prevent the trailing end of the original S from protruding from the original table 102 and hanging down.

The contact type image sensor 103c irradiates the image information surface of the document S with light from an LED array as a light source and forms an image of the reflected light reflected from the image information surface on a sensor element by a selfoc lens (trademark). It reads image information.

[Configuration of Cassette Paper Feed Unit] The cassette paper feed unit 112 is provided at the bottom of the apparatus main body 101. The sheet materials P1 stacked on the sheet feeding cassette 112a are separated and conveyed one by one by a sheet feeding roller 112b and a separation roller 112c.

After the separated sheet material P1 is corrected for the skew of the sheet material P1 by the registration roller pair 112d,
The tip position is detected by the TOP sensor 112e, and the sheet is fed so that the leading end of the toner image formed on the photosensitive drum 111a and the leading end of the sheet material P1 coincide with each other. It is conveyed between the photosensitive drum 111a.

[Configuration of Image Forming Unit] Recording Device Main Body 104
Emits image light from the laser scanner 110 based on an image signal output from the control board 300 of the facsimile apparatus, irradiates the image light to the photosensitive drum 111a of the image forming unit 111, An electrostatic latent image is formed on the surface, the electrostatic latent image is converted into a toner image by the developing unit 111c, and the toner image is transferred to the sheet material P1 fed from the cassette paper feeding unit 112 to the image forming unit 111. .

The photosensitive drum 111a is provided with a charging means 111b.
The developing unit 111c and the cleaning unit 111d are integrated into the process cartridge 111e together with the developing unit 111c, and are configured to be detachable from the apparatus main body 101.

Photosensitive drum 111a of image forming section 111
A transfer charger 111f is disposed at a lower portion, and a heat fixing device 1f is disposed on a sheet conveying path downstream of the photosensitive drum 111a.
14 are arranged.

After the toner image formed on the surface of the photosensitive drum 111a is transferred to the sheet material P1 by the transfer charger 111f, the sheet material P1 is conveyed along the recording sheet conveying portion 113, and the toner image is fixed by the heat fixing device 114. You. The sheet material P <b> 1 is moved by a discharge flapper 115 disposed thereafter to a paper path toward an upper discharge port 122 provided on the upper left side of the apparatus main body 101 and a lower paper discharge port 127 provided on the lower left side of the apparatus main body 101. The recording paper transport path is switched to the heading paper path. The switching operation of the discharge flapper 115 of the recording paper P1 causes the upper discharge tray 121 and the upper discharge tray 12 arranged on the upper left side of the apparatus main body 101 as viewed in FIG.
1 is selectively discharged to one of the lower discharge trays 126 arranged below the first discharge tray 126. The switching operation of the discharge flapper 115 is performed by a signal from the control unit.

The apparatus body 101 has a cartridge cover 1
17, the recording cartridge 111e can be pulled out of the apparatus main body 101 and replaced when the cartridge cover 117 is opened. The cartridge cover 117 has an interlock mechanism.
Is open, or if the recording cartridge 111e is not set in the apparatus main body 101, the recording apparatus main body 104
Is not working. Further, a drum exposure prevention shutter 111i provided on the recording cartridge 111e.
Is linked to the setting of the recording cartridge 111e in the apparatus main body 101, and the cartridge cover 1
17 is opened and the recording cartridge 111e is
By closing the shutter 111i when the photosensitive drum 111 is taken out, unnecessary exposure of the photosensitive drum 111a is prevented.

When a jam occurs during recording, the sheet material P staying inside can be taken out by opening one of the cartridge cover 117, the front cover 118, and the paper discharge cover 123. I have.

The partition 119 is a duct for separating the laser scanner 110 from the recording apparatus main body 104. The air generated by the air flowing by a fan (not shown) causes the laser scanner 110 to have an adverse effect due to heat generated from the recording apparatus main body 104. This prevents the water vapor evaporated from the sheet material P from condensing and dropping on the sheet material P.

[Structure of Control Unit] FIG.
FIG. 3 is a block diagram of a control board 300 and a board for various options of the facsimile apparatus using the BP, and a dotted line indicates the apparatus main body 101. In the figure, a CPU 301 controls the entire facsimile apparatus.
ROM 31 for storing a control program of MPU 311 and the like
2. It comprises a RAM 313 used as a work area for various data processing and a temporary storage for image information, an image processing unit 314 for performing image scaling, resolution conversion, and the like.

The CPU 301 is provided with a calendar, a clock function, and the like having a known configuration. An area for storing important system setting information such as one-touch key destination information and software switch information in the RAM 313 is provided by a battery backup for power failure or the like. Protected from accidental disability. The control system of the facsimile machine is the CPU 3
01 and the following elements 302 to 332 are connected via an interface.

The operation unit 302 includes various key switches such as a numeric keypad 315, a function key 316, a one-touch key 317, a start key 318a, and a stop key 318b. The display unit 303 includes an LCD 319 for displaying various messages and various L for displaying transmission modes and the like.
The ED 320a includes a tally lamp 320b for notifying a distant operator of a communication state and occurrence of a failure, and the like.

The reading unit 304 includes a driving unit 3 such as a reading motor.
21, a reading sensor 322 for reading an image, an image processing unit 323 for shading and binarizing the read image,
It is composed of various sensors 324 and the like for detecting a document.

The recording unit 305 is a driving unit 32 such as a recording motor.
5, a recording unit 326 for controlling a laser scanner or an electrophotographic process, an image processing unit 327 for smoothing an image to be recorded, and various sensors 328 for detecting recording paper and the like.

A communication network 307 and a handset 308 are connected to a first communication control unit 306 that performs outgoing calls, incoming calls, encoding of image data, and the like.

Here, the facsimile apparatus is connected as an optional function to a computer external to the apparatus through a line such as RS232C, SCSI, LAN, etc., so that the apparatus can be used as a scanner printer of the external computer. . The printed circuit board 330 having the function includes a RAM 333 used as a work area for image development and a temporary storage unit for image information, an image processing unit 334 for developing image data based on received print data, and the like. And the external interface 309 is connected.

Further, as another optional function of the facsimile apparatus, the processing speed of communication can be increased by additionally connecting an analog communication network. The second communication control board 331 having the function is capable of calling, receiving,
A second communication control unit 335 for encoding image data and the like is configured, and a communication network 307 is additionally connected.

Further, as another optional function of the facsimile apparatus, the processing speed of communication can be increased by additionally connecting a digital communication network. The digital signal control board 332 having the function includes a digital signal control unit 33 that performs outgoing calls, incoming calls, encoding of image data, and the like.
6 and the like, and a digital communication network 310 is additionally connected.

The three optional boards, the printed board 330, the second communication control board 331, and the digital communication control board 332, which are controlled by the CPU 301, can be attached to and detached from the signal switching board 329 for switching signals according to various functions. It is configured to be.

The communication control board 300 of the facsimile machine,
Since the signal switching board 329, the printed board 330, the second communication control board 331, and the digital communication control board 332 generate radiated noise, a conductive metal connected to GND (ground) is box-shaped to prevent it. Electrical cover 1
28.

Since the electrical cover 128 is made of conductive metal in a box shape, it is strong against external impact and can secure strength. Therefore, the operation unit 105 is installed on the top surface, and the handset table is installed on the right side. , Also serves as a supporting housing.

The electrical cover 12 integrated with the operation unit 105
Reference numeral 8 denotes a document S on the right side of the main body 101 of the facsimile machine.
And a position parallel to the conveying direction of the sheet material P1. Accordingly, it is not necessary to go to the rear of the apparatus in order to perform maintenance on the control board, so that maintenance can be easily performed. Accessibility can be secured. Also, the width of the device can be minimized.

The arrangement of the boards in the electrical cover 128 is determined by the communication control board 300 and the printed board 3 of the facsimile machine.
In a state where 30 is attached to the facsimile machine, the ROM 312 of the communication control board 300 and the RAM 333 of the printed circuit board 330 of the facsimile machine are exchanged or installed in parallel at a position closest to the light cover 116 so that the RAM 333 can be added. I have. The signal switching board 329 is connected to the communication control board 300 of the facsimile apparatus and the printed board 3.
It is arranged at the center between the control boards for options such as 30. This minimizes the length of the signal lines connecting the substrates.

[Concept of Image Formation] Next, the basic operation of the LBP will be described with reference to FIG. 6 which is a conceptual diagram. In FIG. 6, 4
Reference numeral 00 denotes a semiconductor laser that blinks a laser beam for image data to be recorded; 401, a polygon motor; 402, a polygon mirror rotated by the polygon motor 401;
Reference numeral 03 denotes an optical system for performing image formation, tilt correction, and the like; 404, a photodetector; 405, a return mirror; 406, a photosensitive drum; 407, a developing device; 407, a recording sheet;

In the above configuration, first, the semiconductor laser 4
The laser light emitted from 00 is reflected by the polygon mirror 402 and deflected, and is irradiated on the photosensitive drum 406 via the optical system 403 and the return mirror 405 (main scanning). At this time, the head is caught by the photodetector 404 and the irradiation position is determined. While this main scanning is completed for one line, the photosensitive drum 406 rotates one line (sub-scan). The image formed on the photosensitive drum 406 as described above is developed by the developing device 407 and the recording paper P
(408). The sheet is further conveyed along a conveyance guide 409, is fixed by a fixing device 410, and is discharged.

The photosensitive drum 406 and the developing device 4
07 and the elements of the sub-scanning system such as the fixing device 410 are synchronously driven by a recording motor (not shown), gears, belts and the like.

(Other Embodiments) In the above embodiment, a conductive metal is used as the material of the electrical cover 128. However, any material may be used as long as it is conductive and has a strength capable of forming a supporting housing.

In the above-described embodiment, the electrical cover 128 integrated with the operation unit 105 is disposed on the right side of the apparatus. However, it may be disposed on the left side. The original S
If the conveying direction of the sheet material P1 is the left-right direction with respect to the apparatus, the operation unit 105 may be disposed on the front surface.

Further, in the above-described embodiment, a facsimile apparatus is exemplified as an example using an image forming apparatus. However, the present invention is not limited to this. For example, an image forming apparatus such as an electrophotographic copying machine or a laser beam printer may be used. It can also be used for devices.

[0055]

As described above, according to the present invention, in an apparatus having a plurality of boards for optional functions such as addition of a communication line, a control board of the apparatus and a plurality of option boards are put together in a conductive structure. The length of the signal line connecting the control board can be minimized. This makes it possible to reduce the sources of radiation noise at low cost and at the same time improve the maintainability of the control board and the option board.

Further, either the control substrate or the structure is GN
By connecting to D, generated radiation noise can be shielded collectively.

Further, the above-mentioned structure is arranged on one side of the apparatus, so that the height of the apparatus can be reduced, and at the same time, the maintainability of the control board and the option board can be improved. Here, by arranging this structure at a position parallel to the direction in which the document or sheet material is conveyed, the width direction of the apparatus can be suppressed while ensuring the accessibility of the document and sheet material.

Further, by supporting the operation panel on the top surface of the above structure, the operation panel can be reliably supported, and the dead space under the operation panel can be effectively utilized. In the case of such a multifunctional device, the number of keys on the operation panel is large, so that the operation panel is large, and its strength is likely to be weak, which is effective. At the same time, since the distance between the control board and the operation panel can be reduced, the length of the signal line connecting them can be minimized, and the number of sources of radiation noise can be reduced at low cost.

Further, by installing the handset on the same side of the device on which the above-mentioned structure is installed, it is possible to support the device as well as the operation panel. At the same time, its operability can be improved because it is near the operation panel.

Further, a control board for ROM replacement, RAM addition, etc. is arranged at a position closest to the exterior surface, and when there are a plurality of such control boards, they are arranged in parallel.
The above operation can be performed while the control board is attached to the device, and the maintainability can be improved.

Further, by arranging the signal switching board in the center of the control board for switching the signal according to the function, the distance from the control board can be shortened, so that the length of the signal line connecting these boards is minimized. Radiated noise can be reduced at low cost.

[Brief description of the drawings]

FIG. 1 is an external perspective view of a facsimile apparatus according to the present invention.

FIG. 2 is a configuration sectional view of a facsimile apparatus according to the present invention.

FIG. 3 is an external perspective view of a conventional facsimile machine.

FIG. 4 is a sectional view showing the configuration of a conventional facsimile machine.

FIG. 5 is a control system block diagram of a facsimile apparatus using the LBP according to the present invention.

FIG. 6 is a conceptual diagram of a basic operation of the LBP according to the present invention.

[Explanation of symbols]

101: apparatus main body 102: document mounting table 102a configured to be able to stack a plurality of documents S 102a: slider 102b: extended document tray 103: image reading section for reading image information of document S 103a: separation roller pair 103b ... conveying roller pair 103c ... contact type image sensor 103d ... document pressing unit 103e ... document discharging roller pair 104 ... recording apparatus body 105 composed of a laser beam printer 105 ... operation unit composed of display unit and input keys 106 Paper tray 110 Laser scanner 111 Image forming unit 111a Photoconductor drum 111b Charging unit 111c Developing unit 111d Cleaning unit 111e Process cartridge 111f Transfer charger 111i Drum exposure prevention shutter 112 Cassette feed unit 112a … Paper feed Set 112b: Paper feed roller 112c: Separation roller pair 112d: Registration roller pair 112e: TOP sensor 113: Recording sheet transport unit 114: Thermal fixing unit 115: Discharge flapper 116: Light cover 117: Cartridge cover 118: Front cover 119: Partition section between image reading section and recording apparatus main body 120 Upper discharge section 121 Upper discharge tray 122 Upper discharge port 123 Lower discharge cover 125 Lower discharge section 126 Lower discharge tray 127 Lower discharge Paper mouth 128 ... Electrical cover 129 ... Handset mounting table 201 ... Conventional image forming apparatus main body 202 ... Document mounting table configured to be able to stack a plurality of originals S 203 ... Image reading unit that reads image information of original S 204: recording apparatus main body composed of a laser beam printer 205: display unit / input An operation unit 206 including keys and the like 206 an original transport unit 207 an original pressing unit 208 an close contact image sensor 209 an original discharge tray 210 a laser scanner 211 an image forming unit 212 a cassette paper feed unit 213 upper sheet discharge Paper tray 214 ... Cartridge cover 215 ... ADF (auto document feeder) 216 ... Outer document guide 217 ... Document press plate 218 ... Inner document guide 219 ... Partition section between image reading section and recording apparatus main body 220 ... Control section of image forming apparatus 220a: Control board of the image forming apparatus 220b: Control board for options of the image forming apparatus 221: Sheet transport section 222: Front cover 223: Discharge cover 224: Registration transport section 300: Communication control board of a facsimile apparatus using LBP 301 … Controls the entire facsimile machine That CPU 302 ... operating unit 303 ... display unit 304 ... reader 305 ... recording unit 306 ... origination, termination, first performing encoding of the image data
Communication control unit 307 Communication network 308 Handset 309 External interface 310 Digital communication network 311 MPU 312 ROM 313 RAM 314 Image processing unit for performing image scaling, resolution conversion, etc. 315 Numeric keypad 316 Function Key 317: One-touch key 318a: Start key 318b: Stop key 319: LCD 320a: Various LEDs for displaying a transmission mode, etc. 320b: Tally lamp 321: Drive unit such as a reading motor 322: Reading sensor for reading an image 323 ... Image processing unit 324 for shading and binarization of the read image Various sensors 325 for document detection 325 Driving unit such as recording motor 326 Recording unit 327 Image processing unit 328 for smoothing the image to be recorded 328 Recording Detection of paper etc. Various sensors to be performed 329 ... Signal switching board 330 ... Printed board 331 ... Second communication control board 332 ... Digital communication control board 333 ... RAM 334 ... Image processing unit for converting print data into image data 335 ... Calling, calling, Second for encoding image data
Communication control unit printed circuit board 336: Digital communication control unit printed circuit board for calling, receiving, encoding of image data, etc. 400: Semiconductor laser 401 ... Polygon motor 402 ... Polygon mirror 403 ... Optical system 404 ... Photodetector 405 ... Mirror 406 photosensitive drum 407 developing device 408 recording paper 409 transport guide 410 fixing device

Continued on the front page F term (reference) 2C061 AP03 AQ06 BB10 BB12 CC03 CF11 CP05 2H027 JA20 ZA07 2H071 AA26 AA32 AA48 BA13 BA14 BA22 EA04 5C062 AA02 AA05 AB46 AB47 AB49 AD05 AD06 BA00

Claims (11)

[Claims] 1. An image forming apparatus comprising: an image reading device that reads a document on which image information is written; an image forming unit that records the image information on a sheet material; and an operation unit that operates a plurality of image forming modes. At least a part of a control board for controlling the image forming apparatus is covered with a conductive structure, and either the control board or the structure is connected to GND, and the top of the structure is An image forming apparatus, wherein the operation unit is supported by a surface. 2. The image forming apparatus according to claim 1, wherein
The control board having the image forming apparatus is detachable,
A facsimile machine comprising a plurality of control boards for controlling different functions, at least one of which is a board for controlling communication of the facsimile machine. 3. The image forming apparatus according to claim 1, wherein the structure including the operation unit and the control board is disposed on one side of the image forming apparatus. . 4. The apparatus according to claim 1, wherein the structure including the operation unit and the control board is disposed substantially in parallel with a document and sheet conveying direction. Image forming device. 5. The image forming apparatus according to claim 1, wherein a telephone stand is arranged on the same side of the image forming apparatus on which the structure is installed. 6. When the plurality of control boards include a control board that needs to be maintained after being installed in the image forming apparatus, the control board is most preferably attached to an exterior surface of the image forming apparatus. The image forming apparatus according to claim 1, wherein the image forming apparatus is arranged at a close position. 7. When there are a plurality of control boards requiring maintenance, the control boards are arranged in parallel at a position closest to an exterior surface of the image forming apparatus.
The image forming apparatus according to any one of the above. 8. The control board according to claim 1, wherein a control board for selecting and switching control signals of the plurality of control boards is disposed at the center of the plurality of control boards. Image forming device. 9. An image forming apparatus according to claim 1, wherein said image forming means is an electrophotographic process using a laser beam. 10. A facsimile comprising: an image forming apparatus according to claim 1; and communication means for transmitting an image received from a communication line to said image forming apparatus to form said received image. apparatus. 11. An image reading and recording apparatus comprising: the image forming apparatus according to claim 1; and means for recording an image read by image reading means in the image forming apparatus.