JPH0511577A - Electrode wire cleaning device - Google Patents

Abstract

PURPOSE:To prevent light from leaking from the notched part of a case, to eliminate the need of a guide means and to avoid the lowering of the strength of the case by movably fitting a handle main body part in the notched part of the case. CONSTITUTION:This device is provided with a handle 6 which has a recessed part fitted in the marginal part 5 of the notched part 3 of a charger case 4 having the notched part 3 formed on the specified surface of the case 2 arranged to surround the electrode wire 1 for discharging, and which can move by setting the marginal part 5 as the guide means, and a cleaning tool 7 connected to one end of the handle 6. In such a case, the cleaning tool 7 is constituted of a cleaning tool holder 22, a lever operating part 23, a shaft 24, a pad attaching part 25, a pad 26, and a slider 21. The handle 6 having the recessed part is fitted in the marginal part 5 of the notched part 3 of the charger case 4, and the handle 6 and the cleaning tool 7 connected to the handle 6 are moved by setting the marginal part 5 as the guide means, so that the electrode wire 1 is cleaned.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to transfer of an image forming apparatus,
The present invention relates to an electrode wire cleaning device such as a charging device.

[0002]

2. Description of the Related Art Conventionally, an electrode wire 1 for discharging is attached to a charging device, a transfer device or the like provided in an image forming apparatus (see FIG. 1). When these electrode wires are used for a long period of time, corona discharge when applying electricity causes deposits on the wires, which causes unstable corona discharge and uneven charge on the photosensitive surface, resulting in unstable image quality. Contribute to. In order to prevent the uneven charging of the photosensitive surface, a charging device, a transfer device, and the like are equipped with an electrode wire cleaning device for removing deposits on the electrode wires.

By the way, a charger case is provided in the charging device, the transfer device, etc., and the charger case is formed by a case or the like arranged so as to surround the electrode wire, and a notch is provided on one surface of the case in the longitudinal direction thereof. Has been.

A conventional electrode wire cleaning device is attached to a charger case. The electrode wire cleaning device is designed to contact the electrode wire and remove deposits on the electrode wire when the device is operated. A pad, a cleaning tool that holds the pad and a part of which protrudes from the notch of the case, an operation means for moving the cleaning tool from one end of the electrode wire to the other end, and the cleaning tool smoothly. Guide means for allowing movement.

[0005]

However, in such a conventional electrode wire cleaning device as described above, the one covering the notch of the case is a moving cleaning tool, and the light shielding property is insufficient. In addition, a guide means for moving the cleaning tool must be separately attached to the charger case, and the presence of the cutout portion further reduces the strength of the charger case.

In view of the above problems of the conventional electrode wire cleaning device, the present invention prevents light leakage from the notch, does not require a separate guide means, and does not reduce the strength of the case. It is an object of the present invention to provide an electrode wire cleaning device.

[0007]

A charger case having a notch formed on a predetermined surface of a case arranged so as to surround an electrode wire for discharge is provided with a recess fitted to the edge of the notch. The electrode wire cleaning device includes a movable handle having the edge portion as a guide means and a cleaning tool connected to one end of the handle.

[0008]

The handle having the concave portion is fitted to the edge of the notch of the charger case, and the edge and the cleaning tool connected to the handle move to clean the electrode wire by using the edge as a guide.

[0009]

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

FIG. 1 is a side view of an image forming apparatus equipped with an electrode wire cleaning device according to an embodiment of the present invention. That is, the image forming apparatus includes an original placing plate 14 on which an original is placed, and a lens 15 for capturing an optical image of the original.
And a photosensitive surface 10 for forming an electrostatic latent image from an optical image.
And a charging device 11 for charging the photosensitive surface 10,
A developing device 13 for developing the electrostatic latent image formed on the photosensitive surface 10, a toner supplying device 16 for supplying toner to the developing device 13, and an image of the developed toner image on the photosensitive surface 10. Transfer device 12 for transferring to paper
And a cleaning blade 17 for removing the toner remaining on the photosensitive surface 10 after the transfer.

The above-mentioned charging device 11 and transfer device 12 are
An electrode wire cleaning device that is formed from an electrode wire 1 for carrying out corona discharge, a case 2, etc., and removes deposits on the electrode wire 1 in the case 2 (see FIGS. 2 and 3)
Is attached.

FIG. 2 is a sectional view of an embodiment of the electrode wire cleaning device. The case 2 is a storage portion formed by three surfaces having a U-shaped cross section, and a cutout portion 3 is formed in a longitudinal direction in a part of a central surface thereof (see FIG. 3. The broken line indicates the cutout portion). Is shown). One end of the electrode wire 1 is fixed to one end 28 inside the case 2, and the other end of the electrode wire 1 is connected to the other end 29 of the case 2 via a spring 27. The electrode wire 1, the case 2 and the like form a charger case 4.

The notch 3 has a rectangular shape, and has a closed end 30 at one end in the longitudinal direction and an open end 31 at the other end. In addition, both edge portions 5 along the longitudinal direction of the cutout portion 3,
A plate-shaped handle main body 6 having recesses 61 on both sides is fitted (see FIG. 4). At one end of the handle body 6,
A cleaning tool holder 22 having a cutout portion 221 whose inner surface has a step structure is connected, and a handle operating portion 20 for moving the handle body 6 and the cleaning tool holder 22 is joined to the other end. These handle body 6, cleaning tool holder 22,
The handle operation unit 20 constitutes a handle. 2A shows a normal position of the handle body 6 and the cleaning tool holder 22 (when not in cleaning), and B operates the handle operating section 20 to move the handle body 6 and the cleaning tool holder 22, Indicates the position when cleaning.

The lever operating portion 23 is fitted in the notch portion 221 of the cleaning tool holder 22, and is rotated about the shaft 24 according to the movement of the cleaning tool holder 22. Lever operation part 23
Is connected to the pad mounting portion 25 via the shaft 24,
A pad 26 is attached to one end of the pad attaching portion 25. Further, the shaft 24 is connected to the slider 21, and the slider 21 has a concave portion on its side surface, and the concave portion is fitted to the edge portion 5 of the cutout portion 3 so as to be movable. It is located in. Cleaning tool holder 2 above
2, lever operation part 23, shaft 24, pad mounting part 2
5, the pad 26 and the slider 21 constitute the cleaning tool 7.

Next, the operation of the above embodiment will be described.

In FIG. 2, in the normal position A, that is, during non-cleaning, the pad 26 attached to the pad attaching portion 25 is horizontal and separated from the electrode wire 1. As shown in FIG. 4, the handle body 6 covers the cutout 3 from the closed end 30 to the open end 31, and the edge 5 of the cutout 3 and the recess 61 of the handle body 6 are fitted therein. It also functions as a reinforcing member for the case 2 while shielding light. Since the notch 221 of the cleaning tool holder 22 is almost closed by the cleaning tool 7, the shielding property is sufficient.

When cleaning the electrode wire 1, the handle operating portion 20 is pulled out to the left in the drawing. Then, the recess 61 of the handle body 6 joined thereto slides using the edge 5 as guide means, and the handle body 6 and the cleaning tool holder 22 connected to the handle body 6 move in the same direction. Since the play is provided between the notch portion 221 of the cleaning tool holder 22 and the lever operation portion 23, when the cleaning tool holder 22 moves a distance provided with the play, the notch portion 22 of the cleaning tool holder 22 is provided.
The edge part of 1 and the lever operation part 23 contact. When the cleaning tool holder 22 further moves, the lever operating part 23 is pulled by the edge of the notch part 221 of the cleaning tool holder 22 and rotated in the same direction, so that the pad mounting part 2 is moved to the B position in the figure.
5 is inclined and a part of the pad 26 contacts the electrode wire 1. Then, in this state, the slider 21 is moved by being pulled by the lever operation portion 23 with the movement of the handle body portion 6, and the pad 26 moves while cleaning the electrode wire 1. Further, when the pad 26 is cleaned, the handle body 6 is pulled out of the case 2, so that the surface of the handle body 6 on the wire 1 side is exposed to the outside. Therefore, the operator can easily wipe off the toner adhering to this surface.

Although the edge 5 of the notch 3 and the recess 61 of the handle body 6 in the above embodiment are sliding surfaces, a ball bearing or the like is provided between the edge 5 and the recess 61 for rolling sliding. May be

Further, although the handle main body 6 in the above embodiment is operated manually, it may be operated by a motor or the like.

[0020]

As is apparent from the above description, according to the present invention, since the handle main body is fitted in the notch of the case so that the handle can be moved, there is no light leakage from the notch.
There is an advantage that the guide means does not need to be separately provided and the strength of the case does not decrease.

[Brief description of drawings]

FIG. 1 is a side view of an image forming apparatus including an electrode wire cleaning device according to an exemplary embodiment of the present invention.

FIG. 2 is a sectional view of the embodiment.

FIG. 3 is a plan view of the same embodiment.

FIG. 4 is a schematic cross-sectional view of a plane orthogonal to the moving direction of the handle body of the embodiment.

[Explanation of symbols]

 1 Electrode Wire 2 Case 3 Notch 4 Charger Case 5 Edge 6 Handle Main Body 7 Cleaning Tool 61 Recess

Claims (1)

Claim: What is claimed is: 1. A charger case having a notch formed on a predetermined surface of a case arranged so as to surround the discharge electrode wire, the charger case being fitted to the edge of the notch. An electrode wire cleaning device comprising: a recess having a recess, and a movable handle using the edge as a guide, and a cleaning tool connected to one end of the handle.