JPS5862073A - Device for cleaning electrostatic multiple stylus electrode - Google Patents

Abstract

PURPOSE:To remove attached toner and an oxide film from the surface of a pin electrode without imparing a spacer, by contacting a polishing material to a pin electrode line of a multiple stylus electrode head and moving it along the longitudinal direction of the multiple stylus electrode. CONSTITUTION:The polishing member 21 is attached so that it is contacted and compressed to the tip of the pin electrode 9 by a guide roll 20 and it is moved in the longitudinal direction of the multiple stylus electrode 2. The polishing member 21 is pushed to the tip of the pin electrode 9 of the head of the multiple stylus electrode 2 by a handle 23 and moved back and forth several times in the longitudinal direction. Thus the surface of the pin electrode 9 is cleaned, and the degradation of the picture quality due to the poor discharge can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electrostatic recording device using a multi-needle electrode head,
In particular, the present invention relates to a multi-needle electrode cleaning device that can easily clean the pin electrodes of a multi-needle electrode head and has improved maintainability.

Using plain paper in electrostatic recording is very advantageous in terms of running costs. The structure of this electrostatic recording on plain paper is shown in FIG. A high voltage pulse is applied to a dielectric recording medium 1 (hereinafter referred to as a belt) via a multi-needle electrode head 2 to form an electrostatic latent image, and this latent image is made visible by a developer 3. After that, the image is transferred to plain paper 7 by the transfer corotron 4, and fixed by the fixing device 8. The residual toner and toner on the transferred belt are removed by the cleaner-5.
will be removed. The belt now enters a second image forming cycle, where the surface potential is made constant by the Chi-Ecorotron 6, and a latent image is again formed. In this way, the belt can be used repeatedly to produce prints on plain paper, making it possible to provide a printer with low running costs.

To form a latent image, a certain gap 10 is maintained between the dielectric surface and the pin electrode 9 of the multi-needle electrode head 2 as shown in FIG. forming an image. In addition, the space ll110 necessary for the code
The above-mentioned void can be obtained by pressing the bell 1 with a suitable backing material 24.

In the method described above, since the belt is used repeatedly,
The toner remaining on the belt is attracted by the discharge and adheres to the surface of the bottle electrode. This amount gradually accumulates as the number of sheets increases, eventually causing discharge failure. Conventionally, there is a method of automatically removing this dirt by applying a member such as a fur brush at appropriate times, but with method 1, it is difficult to completely remove the adhered toner. As a result, residual toner on the belt adheres to the pin electrodes, causing discharge failure. This is because the pin electrode generates heat due to discharge, and powder toner etc. sticks to it.

The present invention aims to easily remove toner stains on the pin electrodes, and to provide a multi-needle electrode cleaning device that easily cleans toner adhering to the pin electrode surface of a multi-needle electrode head. In the cleaning device for the pin electrode section, which is covered with a spacer 'e for maintaining a gap in the pin electrode array section, the holding mechanism that holds the abrasive material in contact with the pin electrode array and the holding mechanism of the multi-needle electrode are used. This is achieved by a structure in which the remaining structure is brought into contact with and moved in the longitudinal direction.

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

FIG. 3 shows one embodiment of the present invention, in which a guide roll 20 is used to press a polishing member 21 along the longitudinal direction of the multi-needle electrode 2 to the tip of the pin electrode and polish the surface of the pin electrode. It consists of a polishing member for sliding the pin electrode F, and an extrusion handle 23 for sliding the pin electrode F, and by sliding the extrusion handle over the gap in the pin electrode, the pin m pole surface can be easily cleaned.

By using the ultra-cleaning device for the multi-needle '# according to the present invention, the pin electrode surface can be completely cleaned, and the oxide film formed on the pin electrode by multiple discharges can also be removed. It is possible to completely prevent image quality deterioration such as bit loss caused by discharge failure. In addition, in the apparatus of the present invention, parts other than the pin electrode portion are not polished, so that fluctuations in the air gap and discharge defects caused by modifying the spacer can be prevented.

Further, a spring or the like may be used to bring the abrasive material into contact with the surface of the pin electrode with a constant pressure.

Here, the abrasive material for polishing is spread out with dimensions comparable to those of the gap shown in FIG.

Experimental examples of the present invention are shown below. The guide roll 20 is a rubber roll, and the M degree of the rubber is 50°M20 ffl ff
iφ width of multi-needle electrode spatula r (20ms
It was set so that it could be held well against a).

As the abrasive material, a stainless steel disk 27 was fixed with wrapping tape 26 (particle size 16 μm) manufactured by Fuji Photo Film Co., Ltd. (see FIG. 4).

This was configured as shown in Fig. 3, and the support device M22 was pressed against the gap of the multi-needle electrode head with the extrusion handle 23, and the supporting device M22 was slid back and forth several times in the longitudinal direction of the multi-needle electrode to polish the pins. The surface of the electrode was completely polished, and when recording was performed using this multi-needle electrode head, a good image with no dropped bits was obtained. In this case, the abrasive material 21
The support device 22 held the abrasive material 21 to such an extent that it did not rotate, and the abrasive material 21 was pressed by the extrusion handle 23 via the pressing spring 25.

[Brief explanation of the drawing]

Fig. 1 is an overview of a conventional transfer type plain paper recording device, Fig. 2 is an enlarged cross-sectional view perpendicular to the advancing direction of the multi-needle electrode head and the belt, and #! 3 is a longitudinal cross-sectional view showing an embodiment of the support device of the present invention, - FIG. 4 is a perspective view showing an embodiment of the abrasive material used in the present invention, and reference numerals in the figure. 1..ls electric belt 2..multi-needle electrode head 6..
Developer 4...Transfer corotron 5...Cleaner 6...Charge corotron 7...Paper
8... Stratifier 9... Pin electrode 1o... Gap 11... Control electrode 12... Spacer 20... Guide roll 210. Abrasive material 22...Support device 1 2
3. Extrusion handle 24. - Backing material 25. Pressing spring 26. Wrapping tape 27. Circular plate

Claims (1)

[Claims] In a cleaning device for a bottle electrode part in which a pin electrode array part is covered with a spacer for maintaining a gap, there is provided a holding mechanism for holding an abrasive material in contact with the pin electrode array, and a holding mechanism for holding the abrasive material in contact with the pin electrode array part, and a holding mechanism for holding the abrasive material in contact with the pin electrode array part, and a holding mechanism for holding the abrasive material in contact with the pin electrode array part. A multi-needle electrode cleaning device for electrostatic recording consisting of a guide mechanism that moves in contact with the direction.