JPH11174763A - Image processing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an image processing device which prevents fall of foreign matter between a metal plate and a substrate without an increase in the number of parts and by a simple structure. SOLUTION: The image processing device which carries a sheet and processes an image has a sheet carrying means for carrying the sheet, an image processing means for processing the image onto the sheet carried by the sheet carrying means, and an electrically equipped substrate 19 for controlling the drive of the device. The electrically equipped substrate 19 is fixed to an erected metal plate 17 with a specific amount of space left between them, and also a canopy 21 for covering the specific amount of space above the electrically equipped substrate 19 is formed by projectingly bending the metal plate 17.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image processing apparatus such as an image forming apparatus for conveying a sheet to form an image on the sheet or an image reading apparatus for reading an image described on the conveyed sheet.

[0002]

2. Description of the Related Art Today, with the spread of office automation equipment, image forming apparatuses such as printers and copiers and image reading apparatuses such as scanners have been widely used. These image processing apparatuses are equipped with an electric board provided with a control circuit for controlling driving of a member for conveying a sheet, image processing means, and the like.

This electrical board is generally fixed to a sheet metal or the like inside the apparatus with screws or the like. As shown in FIG. 4, the sheet metal 50 and the substrate are interposed on an erect sheet metal 50 via a mold spacer 51.
52 and a predetermined interval A is provided between them.

[0004]

In the above apparatus, a screw or the like is dropped into the gap A between the sheet metal 50 and the substrate 52 at the time of assembling or maintenance, and if the screw is caught between the sheet metal 50 and the substrate 52, a short circuit occurs. There is a possibility that. Therefore, conventionally, a mylar sheet 53 is fixed on the upper surface of the sheet metal 50 with a double-sided tape 54 so that screws and the like do not fall into the gap A.

However, in the configuration in which the mylar sheet 53 is adhered to the upper surface of the sheet metal 50 as described above, the number of members such as the sheet 53 and the double-sided tape 54 increases, and the cost is increased due to the additional attaching step. It was something that would be.

An object of the present invention is to solve the above-mentioned conventional problems, and an object of the present invention is to prevent foreign matter from dropping between a sheet metal and a substrate with a simple configuration without increasing the number of parts. It is an object of the present invention to provide an image processing apparatus which can prevent the image processing.

[0007]

A representative configuration according to the present invention for achieving the above object is a sheet conveying means for conveying a sheet in an image processing apparatus which conveys a sheet and performs image processing; Image processing means for processing an image on a sheet conveyed by the sheet means, and an electrical board for controlling the driving of the apparatus, the electrical board is fixed to an upright sheet metal at a predetermined interval, and A sheet metal is bent and raised to form an eave portion that covers the predetermined space above the electrical board.

In the above configuration, the eaves can be formed on the upper part of the electric board only by bending the upper part of the sheet metal supporting the electric board, whereby foreign matter falls into the gap between the sheet metal and the electric board. Can be prevented.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an image processing apparatus according to the present invention will be described with reference to FIGS. 1 to 3 in which the present invention is applied to a copying machine. 1 is an explanatory perspective view showing a state in which an electrical board is attached to a sheet metal, FIG. 2 is a schematic explanatory view of the configuration of the entire copying machine, and FIG. 3 is an explanatory view of another example.

First, the overall configuration of the copying machine will be described with reference to FIG. In this image forming apparatus, as shown in FIG. 2, when an original is placed on an original platen glass 1 and a start button (not shown) is pressed, the optical system 2 scans and reads the information described in the original. To form an image on the photosensitive drum 3.

The sheet S accommodated in the cassette 4 is conveyed by conveying means including a pickup roller 5, a separation roller pair 6, a conveyance roller pair 7, a registration roller pair 8 and the like in synchronization with the scanning of the optical system 2. The image is formed by the image processing means. The image processing means in the present embodiment includes:
A charging roller 9, a developing device 10, a transfer roller 11, and a cleaning device 12 are provided around the photosensitive drum 3, and a toner is formed on the sheet S by an electrophotographic recording method using an image formed and projected by the optical system 2. This is for transferring and forming an image.

Then, the sheet S on which the image has been transferred is conveyed to the fixing means 14 by the belt member 13 to apply heat and pressure to fix the image, and then discharged to the discharge tray 15.

Each member such as the transport means and the image processing means is controlled by an electrical unit 16.

Next, the structure of the electrical unit 16 will be described. As shown in FIG. 1, the electrical unit 16 is provided with a sheet metal 17 which is vertically provided inside the apparatus and vertically mounted on the apparatus body by screws 20. This sheet metal 17 is fixed
An electrical board 19 is fixed at a predetermined distance A via a spacer (mold member) 18.

The upper portion of the sheet metal 17 is integrally formed with the eaves 21 by bending and raising. The eave portion 21 is provided with a space A between the sheet metal 17 and the electrical board 19 and the electrical board 19
Is formed so as to have a relationship of A ≦ B between the upper end or the uppermost part of the circuit pattern and the interval B between the bent and raised eaves 21. When a high-pressure substrate or the like is used, it is necessary to keep a certain distance (creeping distance) between the substrate and a nearby metal plate so that there is no problem due to leakage or the like. They are configured so as to have a relationship, so that problems such as leaks do not occur.

The distance A between the sheet metal 17 and the electrical board 19 is
And the length C of the bent eaves 21 is A ≒
It is configured to have a relationship of C. Furthermore, the width H of the eaves 21 and the width L of the electrical board 19 are configured to have a relation of H ≒ width L.

As a result, the eaves portion 21 reliably covers the upper part in the length direction and width direction of the gap between the sheet metal 17 and the electrical board 19, and foreign matter such as screws fall into the gap during assembly or maintenance. Can be prevented.

In this embodiment, when the sheet metal 17 is bent and raised to form the eaves 21, a reinforcing portion is formed on both sides of the bending by a bent portion 22 formed by bending and a beaded portion 23 and the like. The sheet metal 17 is not bent. The reinforcing portion need not be limited to the bent portion 22 or the beaded portion 23, and may be reinforced by another configuration.

As described above, the sheet metal on which the electric board 19 is mounted
By bending and raising a part of 17 to form the eaves 21,
With a simple configuration, it is possible to reliably prevent foreign matter from dropping into the gap between the sheet metal 17 and the electrical board 19. Also,
This eliminates the need for a conventional step of attaching a mylar sheet and the like, and further reduces the cost because the number of parts is not increased.

In the above-described embodiment, as shown in FIG. 1, an example is shown in which the upper and lower ends of the sheet metal 17 are fixed to the apparatus main body by screws 20, but this is done as shown in FIG.
The same effect can be obtained even if the right and left ends of 17 are fixed by screws 20.

In the above-described embodiment, a copying machine is exemplified as an image processing apparatus. However, the present invention is not limited to this, and can be applied to a printer, a facsimile machine, and the like.

In the above-described embodiment, the image processing means is an electrophotographic recording type image forming means. However, the image processing means may be constituted by an image reading means. That is, the present invention can be suitably applied to an image reading apparatus in which a document is set as a sheet, the document is separated and fed one by one, and the document description information is read by image reading means as image processing means. it can.

[0023]

The present invention is constructed as described above.
An eaves portion can be formed on the upper part of the electric board only by bending the upper part of the sheet metal supporting the electric board, thereby preventing a foreign substance from falling into the gap between the sheet metal and the electric board. Further, it is possible to reduce the number of parts and the number of assembling steps, thereby achieving cost reduction.

[Brief description of the drawings]

FIG. 1 is a perspective explanatory view showing a state in which an electrical board is attached to a sheet metal.

FIG. 2 is a schematic diagram illustrating the configuration of the entire copying machine.

FIG. 3 is an explanatory diagram of another example.

FIG. 4 is an explanatory diagram of a conventional technique.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Platen glass 2 ... Optical system 3 ... Photoreceptor drum 4 ... Cassette 5 ... Pickup roller 6 ... Separation roller pair 7 ... Conveyance roller pair 8 ... Registration roller pair 9 ... Charging roller 10 ... Developing device 11 ... Transfer roller 12 ... Cleaning device 13… Belt member 14… Fixing means 15… Ejection tray 16… Electrical unit 17… Sheet metal 18… Spacer 19… Electrical substrate 20… Screw 21… Eave 22… Bend 23… Bead processing

Claims (5)

[Claims] 1. An image processing apparatus for conveying a sheet and performing image processing, a sheet conveying means for conveying a sheet, an image processing means for processing an image on a sheet conveyed by the sheet means, and a drive of the apparatus. An electrical board for controlling, comprising: fixing the electrical board to a standing metal plate at a predetermined interval, and bending and raising the sheet metal to form an eave portion covering the predetermined interval above the electrical board. An image forming apparatus comprising: 2. A structure according to claim 1, wherein a distance A between the sheet metal and the electric board and a distance B between an upper end of the electric board and the bent eaves have a relation of A ≦ B. The image processing apparatus according to claim 1. 3. The image processing apparatus according to claim 1, wherein the distance between the sheet metal and the electrical board is substantially equal to the length of the bent eaves. 4. The image processing apparatus according to claim 1, wherein the width of the bent eaves is substantially equal to the width of the electrical board. 5. The image processing apparatus according to claim 1, wherein reinforcing portions are formed on both sides of the bent portion of the sheet metal.