JPH0123150Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a cleaning device for a convergent light transmission body provided in, for example, an electrophotographic apparatus.

[Technical background of the invention and its problems]

Generally, an electrophotographic apparatus having a convergent light transmitting member has a charger 2, a converging light transmitting member 3, a convergent light transmitting member 3, A developing device 4, a transfer peeling charger (not shown), a cleaning device 5, and the like are provided.

During copying, the surface of the photosensitive drum 1 is charged by the charging charger 2, and the surface is irradiated with light by the focusing light transmitter 3 to form an electrostatic latent image of the original. This electrostatic latent image is sent to a developing device 4 by the rotation of the photosensitive drum 1, where it is developed, and then sent to a transfer separation charger. The image is transferred to a transfer paper by this transfer peeling charger, and the image is fixed on this transfer paper by a fixing device, and then the transfer paper is discharged. On the other hand, some developer remains on the photosensitive drum 1 after the image transfer, but this residual developer is removed by the cleaning device 5.

By the way, when the developer is supplied by the developing device 4 or when the residual developer is removed by the cleaning device 5, a part of the developer is scattered. This scattered developer is caused by the convergent light transmitting body 3 because the convergent light transmitting body 3 is close to the photosensitive drum 1.
It adheres to the end face of the photosensitive drum 1, especially the lower end face near the photoreceptor drum 1. For this reason, the convergent optical transmission body 3 is periodically
If not cleaned, image quality will deteriorate. As this cleaning device, those shown in FIGS. 2 and 3 are known. That is, the second
What is shown in the figure is a frame 6 of a copying machine with a holder 7,
By fixing the cleaning members 8, 8 through 7, bringing these cleaning members 8, 8 into contact with the upper and lower end surfaces of the converging light transmitting body 3, and inserting and removing the convergent light transmitting body 3, cleaning can be performed. I'm starting to do it. Further, in the one shown in FIG. 3, cleaning members 11, 11 are attached to the focusing light transmitting body 3 via a slidable guide rail 9 and a holding member 10, and the cleaning member is moved by moving the guide rail 9 forward. 11,11
This is to clean the upper and lower end surfaces of the convergent light transmitting body 3.

However, the arrangement shown in FIG. 2 has the disadvantage that it is difficult to position the focusing optical transmitter 3 and that a complicated structure is required to improve the positioning accuracy. In addition, the latter requires a special guide rail 9 for sliding the cleaning members 11, 11, which has the disadvantage of increasing costs.

[Purpose of invention]

This invention was made with attention to the above circumstances,
The purpose of this invention is to provide a cleaning device that can clean a convergent light transmission body with a simple configuration without providing a special guide.

[Summary of the idea]

In the present invention, a holder is slidably attached to a guide body supporting a charger, a cleaning member is provided on the holder, and the cleaning member is brought into contact with a convergent light transmitting member to clean it.

[Example of idea]

An embodiment of the present invention will be described below with reference to FIGS. 5 and 6. In the figure, reference numeral 21 denotes a guide body with a U-shaped cross section attached to the main body of the copying machine (not shown). Normally, a charging charger is attached to this guide body 21 so that it can be inserted and removed freely, and during cleaning, as shown in FIG. A cleaning device 23 is slidably attached to the holder. The cleaning device 23 has a holding member 24 that is slidably inserted into the guide body 21, and one end of a support plate 26 is fixed to the lower end of the holding member 24 by a fixing screw 25. The other end of the support plate 26 extends below the focusing light transmitter 27, and a cleaning member 29 is adhered to the upper surface of the other end with an adhesive tape 28 interposed therebetween. The upper surface of this cleaning member 29 is pressed against the lower end surface 27a of the convergent light transmitting body 27 with an appropriate pressure. The cleaning member 29
The cleaning device is made of, for example, felt, soft pads, gauze, sponge, rag, absorbent cotton, or a brush, and is impregnated with alcohol or the like to improve the cleaning effect.

Therefore, during cleaning, after removing the charging charger from the guide body 21, the cleaning device 23 is attached to the guide body 21. When the cleaning device 23 is slid in the direction of the arrow as shown in FIG. The attached toner must be scraped off and cleaned.

As mentioned above, the guide body 2 of the charging charger
1 to guide the cleaning member 29, there is no need to provide a special guide body, and the structure can be simplified.

Further, since the cleaning member 29 is guided by the guide body 21, it is possible to apply appropriate pressure and frictional force to the lower end surface of the convergent light transmitting body 27 for cleaning.
There is no possibility of damaging the photoreceptor drum or the focusing light transmitting body 27 disposed in the periphery.

Note that the present invention is not limited to the above-mentioned embodiment, and as shown in FIG.
The road contact cleaning member 32 may be attached to. According to this, there is no need for a separate holding member 24 or support plate 26, the structure is simplified, and there is no risk of losing the cleaning device. In this embodiment, as shown in FIG. 8, when the charging charger is set at a fixed position in the copying machine, the cleaning member 32 cleans the area in which the light reflected from the original is removed from the longitudinal direction of the focusing light transmitting body 27. It is designed to be stored in a place that avoids the transmitting range A, so that the function of the electrophotographic apparatus will not be affected even while the electrophotographic apparatus is in operation.

Further, in general, since toner and the like adhere to the charger wire 31a of the charger 31,
Although it is necessary to clean regularly, the cause of the dirt on the lower end surface of the focusing light transmitting body 27 and the dirt on the charging charger 31 is the same, and the cleaning cycle is also almost the same. Therefore, if the charging charger 31 is configured to also serve as a cleaning tool for the lower end surface of the focusing light transmitting body 27, the charging charger 31 is taken in and out during regular cleaning of the focusing light transmitting body 27. The lower surface is automatically cleaned at the same time, and the trouble of periodic cleaning of the lower end surface of the convergent light transmitting body 27 can be completely eliminated.

As shown in FIG. 9, the cleaning member 29 has a mounting structure in which a mounting hole 26a is formed in the support plate 26, and the cleaning member 29 is removably mounted in the mounting hole 26a via a support 41. It's okay.

In addition, as shown in FIG.
A bent portion 31a is formed on the side plate of 1, and this bent portion 3
The cleaning member 32 may be adhered to 1a via an adhesive tape 45.

In addition, as shown in FIG.
A mounting hole 47 is bored in the bent portion 31a of the side plate 1,
The cleaning member 3 is inserted into this mounting hole 47 via the support 46.
2 may be detachably attached.

[Effect of idea]

As explained above, in the present invention, a holder is slidably attached to a guide body for supporting a charger, a cleaning member is provided on this holder, and the cleaning member is brought into contact with a focusing light transmission member to clean it. As a result, the cleaning member can be guided without using a special guide body in the convergent light transmission body or image forming apparatus body as in the past, and the structure is simplified and costs can be reduced. It has the effect of being able to

[Brief explanation of drawings]

Figures 1 to 4 show conventional examples.
The figure is an internal configuration diagram of an electronic copying machine, FIG. 2 is a vertical sectional view showing the first cleaning device, FIG. 3 is a side view showing the second cleaning device, FIG. The figures are a longitudinal sectional view showing a cleaning device which is an embodiment of the present invention, FIG. 6 is a side view thereof, FIG. 7 is a longitudinal sectional view showing a cleaning device which is another embodiment of the invention, and FIG. is a side view thereof, FIG. 9 is a vertical cross-sectional view showing the first other example of the cleaning member, FIG. 10 is a vertical cross-sectional view showing the second other example of the cleaning member, and FIG. 11 is the cleaning member. It is a longitudinal cross-sectional view which shows the third other example of a member. 27... Focusing light transmission body, 21... Guide body,
31... Charger, 24... Holder, 29, 32...
...Cleaning parts.

Claims (1)

[Claims for Utility Model Registration] (1) In an image forming apparatus having a converging light transmitting body and a guide body adjacent thereto, a holder that is slidably attached to the guide body. 1. A cleaning device for a converging light transmitting body, comprising: a cleaning member provided on the holding body and cleaning the convergent light transmitting body by coming into contact with the convergent light transmitting body. (2) A cleaning device for a convergent light transmitting body according to claim 1, wherein the holder is a charger.