JPH03267957A - Discharge wire cleaning device for electrophotographic copying device - Google Patents

Abstract

PURPOSE:To perform cleaning almost all over the periphery of a discharge wire by interposing the discharge wire in the notched groove of a cleaning member. CONSTITUTION:The discharge wire cleaning device 19 is constituted of a pedestal 20 having the cylindrical fitting part 21 which is attachably/detachably fitted in a slit 18 formed on the upper surface of the shielding case 10 on its lower surface, the cleaning member 22 which is fitted and fixed in the fitting part 21, and the knob 24 for moving the pedestal 20 along the discharge wire 9. Then, the cleaning member 22 is formed of soft member such as sponge, etc., and the notched groove 23 is formed on the lower surface of the member 22, then cleaning is performed in a state where the wire 9 is interposed in the groove 23. thus, the cleaning is performed all over the periphery of the discharge wire and cleaning efficiency is enhanced.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a discharge wire cleaning device for an electrophotographic apparatus that removes toner and the like attached to a discharge wire of a corona discharger.

[Conventional technology]

Generally, in electrophotographic devices such as copying machines and laser printers,
If the corona discharger is used for a long period of time, toner and dust will adhere to the discharge wire of the corona discharger, making it impossible to perform stable corona discharge due to the adhered toner, etc., resulting in problems such as deterioration of the quality of transferred images. occurs.

Therefore, in order to solve this problem, a cleaning member is pressed against the discharge wire of the corona discharger, and the cleaning member is slid along the discharge wire to remove toner etc. attached to the discharge wire of the electrophotographic device. A cleaning device has been proposed in Japanese Patent Application Laid-Open No. 59-34556.

[Problem to be solved by the invention]

However, in the conventional cleaning device as described above, the cleaning member is formed from a raised member such as a brush or felt, and cleaning is performed by pressing the surface of the raised member or a groove formed on the surface against the discharge wire. Therefore, there was a problem that the entire circumference of the discharge wire could not be cleaned, and the cleaning effect was low.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a discharge wire cleaning device for an electrophotographic apparatus that can clean almost the entire circumference of a discharge wire and has a high cleaning effect.

[Means to solve the problem]

In order to solve the above problems, the present invention provides a discharge wire cleaning device for an electrophotographic apparatus that slides a base along a discharge wire of a corona discharger and cleans the discharge wire with a cleaning member provided on the base. In the cleaning member, the cleaning member is made of a flexible member, and a cut groove for sandwiching the discharge wire is formed in the flexible member.

[Function] In the present invention, when the discharge wire is inserted into the cut groove of the cleaning member, the discharge wire is wrapped in the cleaning member due to the flexibility of the cleaning member, so that almost the entire circumference of the discharge wire can be cleaned. I can do it.

〔Example〕

Hereinafter, the first to third embodiments of the present invention will be explained in Figs. 1 to 1O.
This will be explained with reference to the figures.

FIG. 10 shows a schematic configuration of an electrophotographic device,
Inside the main body 1 of this electrophotographic apparatus is a cylindrical photoreceptor 2.
is rotatably provided. A corona discharger 3, an exposure device 4, a developing device 5, a transfer device 6, a drum cleaner 7, and a static elimination lamp 8 are sequentially arranged around the photoconductor 2 along the rotational direction of the photoconductor 2. .

The corona discharger 3 charges the surface of the photoreceptor 2, and is composed of a discharge wire 9 and a shield case IO. The exposure device 4 forms an electrostatic latent image on the surface of the photoconductor 2, and includes, for example, a polygon mirror that scans a laser beam in the width direction of the photoconductor 2, and a polygon mirror that scans the laser beam from the polygon mirror onto the photoconductor. It is configured as an optical system that irradiates the surface of 2.

On the other hand, the developing device 5 develops the electrostatic latent image formed on the surface of the photoreceptor 2 into a toner image, and includes a developing roller 11 that adheres toner as a developer to the surface of the photoreceptor 2. . Further, the transfer device 6 is for transferring an electrostatic latent image developed into a toner image onto a sheet of paper.
The paper that has passed through has a toner image fixed thereon by a fixing device 12, and is then transported to a paper discharge port 14 by a transport roller 13. Note that the paper is supplied from a paper feed cassette 16 by a paper feed roller 15.

Further, the drum cleaner 7 is used to remove residual toner adhering to the surface of the photoreceptor 2, and the static elimination lamp 8 is used to remove static from the surface of the photoreceptor 2 in preparation for the next charging.

1 and 2 are perspective views of a discharge wire cleaning device 19 showing a first embodiment of the present invention, and FIG. 3 is a sectional view thereof. A base 20 having a rectangular cylindrical fitting part 21 on the lower surface that removably fits into the formed slit 18, a cleaning member 22 fitted and fixed in the fitting part 21, and the base 20. The cleaning member 22 is made of a flexible member such as a sponge. Further, a cut groove 2 is provided on the lower surface of the cleaning member 22.
3 are formed, and the discharge wire 9 is sandwiched in this cut groove 23 for cleaning.

FIG. 4 is a diagram showing a state in which the fitting portion 21 of the base 20 is fitted into the slit 18 of the shield case 1°.
When the cleaning member 22 is fitted into the slit I8 of
The discharge wire 9 is held in the cut groove 23 provided on the lower surface of the discharge wire 9 . At this time, since the cleaning member 22 is made of a flexible member such as a sponge, the discharge wire 9 is wrapped in the cleaning member 22 as shown in FIG. Therefore, by sliding the base 20 along the discharge wire 9 in this state, the cleaning member 22 can remove toner and the like adhering to the entire circumference of the discharge wire 9.

Note that the present invention is not limited to the above embodiments.

For example, in the above embodiment, the cleaning member 22 is fixed to the fitting part 21 of the base 20, but the cleaning member 22
may be removably provided on the base 20.

Further, as shown in FIG. 6, two cut grooves 23a and 23b are provided on the lower surface of the cleaning member 22 so as to intersect with each other at right angles, so that when one of the cut grooves becomes dirty, the base 20 can be rotated by 90''. The discharge wire 9 may be cleaned in the other notched groove by using the other notched groove.Furthermore, the cleaning member 20 is provided so as to be movable in the depth direction of the notched groove 23, and the cleaning member 20 is provided so as to be movable in the depth direction of the notched groove 23. The sandwiching position between the discharge wire 9 and the discharge wire 9 may be changed.

Next, a third embodiment of the present invention will be described with reference to FIGS. 7 to 9. Note that the same parts as those shown in FIGS. 1 to 6 are given the same reference numerals, and only the parts that are different from the first and second embodiments described above will be explained.

The cleaning member 22 of this third embodiment has a shape that fits into the shield case 10, and by sliding the base 20 along the discharge wire 9, it cleans toner etc. adhering to the inner surface of the shield case 10. It can be brushed off with a member 22. Furthermore, notches 25 are formed on both sides of the base 20 to fit with positioning shafts 26 provided on the outer surface of the shield case 10, and the discharge wire cleaning device 19 is attached to the end of the corona discharger 3. It can be fixed.

〔Effect of the invention〕

As explained above, according to the present invention, the cleaning member is formed of a flexible member, and the cut grooves for sandwiching the discharge wire are formed in the flexible member, so that the entire circumference of the discharge wire can be cleaned. A highly effective discharge wire cleaning device for an electrophotographic device can be provided.

[Brief explanation of drawings]

1 to 5 show a first embodiment of the present invention. FIGS. 1 and 2 are perspective views of a discharge wire cleaning device, FIG. 3 is a cross-sectional view thereof, and FIG. 4 is an embodiment of the same. 5 is an enlarged view of part A shown in FIG. 4, FIG. 6 is a perspective view of a discharge wire cleaning device showing a second embodiment of the present invention, and FIGS. 7 to 9 7 and 8 are perspective views of a discharge wire cleaning device, FIG. 9 is a diagram showing the operation of the same embodiment, and FIG. 10 is a diagram of an electrophotographic device. It is a schematic diagram. 2... Photoreceptor, 3... Roll six discharger, 4... Exposure device, 5... Developing device, 6... Transfer device, 7...
Drum cleaner, 8... Static elimination lamp, 9... Discharge wire, 10... Shield case, 18... Slit, 19... Discharge wire cleaning device, 20... Base, 22... Cleaning member, 23... cut groove. Figure 1

Claims (2)

[Claims] (1) In a discharge wire cleaning device for an electrophotographic device in which a base is slid along a discharge wire of a corona discharger and the discharge wire is cleaned with a cleaning member provided on the base, the cleaning member is made flexible. A discharge wire cleaning device for an electrophotographic apparatus, characterized in that the cleaning device is made of a flexible member, and has a cut groove for sandwiching the discharge wire in the flexible member. (2) The discharge wire cleaning device for an electrophotographic apparatus according to claim 1, wherein the flexible member has a side surface thereof in contact with an inner surface of the shield case of the corona discharger.