JPS59155878A - Cleaning device - Google Patents

Abstract

PURPOSE:To simplify discard operation by constituting so that a toner push-in member is driven to rotate in a discard toner containing box communicating to the toner discard port of a housing and to fill the discard toner in the toner containing box. CONSTITUTION:A toner 9 which is scraped from a photosensitive body 1 by a rubber blade 3 and is collected right under the rubber blade 3 is extruded to the toner discard port B of the housing 2 by a toner extruding member 8 extended to a ladder chain by the rotation of a revolving shaft 4, and drops into the discard toner containing box 10. Subsequently, it is carried away in the direction as indicated with an arrow E by the toner push-in member 14 rotating in the direction as indicated with an arrow D to receive the toner which drops as an arrow F one after another. Accordingly, the toner 11 is filled in the discard toner containing body 10 exceeding the containing limit line G of the toner in the constitution having no push-in member 14. Therefore, the number of times for removing the discard toner containing box is reduced, and the discard is simplified.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an IJ-printing device for use in electrostatic transfer type recording devices such as copying machines, facsimile machines, and electrostatic printers.

Conventional configuration and its problems In a copying machine that is an electrostatic transfer recording device, a conventional cleaning device uses a rubber blade to remove the toner remaining on the photosensitive drum after transferring the toner image on the photosensitive drum to transfer paper. , the toner removed by the rubber blade is dropped into the waste toner storage box installed in the cleaning device,
At any time, the waste toner storage box was removed from the copying machine and the toner was removed from the photosensitive drum.The toner removed from the photosensitive drum contained fine fibers from the transfer paper, and the angle of repose was large, causing the waste toner storage box to be discarded. Disadvantages include the fact that the toner accumulates in a bell-shaped manner inside the toner, and the toner must be removed frequently, especially in copying machines configured to transport the transfer paper below the cleaning device, because the waste toner storage box is spatially small. was there. The toner in the waste toner storage box and the toner that has just been scraped off with the rubber blade are connected in the cleaning device, so when the waste toner storage box is removed from the cleaning device, the toner will be removed from the copying device. It had the disadvantage of being scattered. In the conventional cleaning device shown in FIG. 1, a rubber blade 3 is provided inside a housing 2 having an opening A facing the photosensitive drum 1 and a toner waste port B, and a rubber blade 3 is provided below the rubber blade 3 along the length of the photosensitive drum. A rotating shaft 4 that rotates in parallel with the direction and a driven shaft 5 rotatably parallel to the rotating shaft 4 are provided, and a sprocket 6 is installed at both ends of the two shafts.
One by one.

A ladder chain 7 is connected to each of the sprockets 6 at both ends so that the rotary shaft 4 and the driven shaft 5 are interlocked, and a toner pushing member 8 is connected to the rudder-chain 7 which interlocks at both ends of the two shafts. , the rubber blade 3 is circulated in the direction of arrow C in accordance with the movement of the ladder chain 7.
The blown out toner 9 is pushed out so that it falls into the waste toner storage box 10 via the toner waste port B.

In this conventional example, since the toner 9 that is being shuffled directly under the rubber blade 3 is pushed up toward the toner disposal port B by the toner pushing member 8, the toner receptacle of the waste toner storage box 10 has the opening of the waste toner storage box. However, the toner 11 gradually accumulates in the waste toner storage box 10 like a mountain, and finally the top of the toner 11 reaches the toner waste port B, and the waste toner storage box 10 The toner disposal port B is closed while leaving an extra space 12 in the box 10. -IW, when the toner waste port B is closed, even if the toner is pushed onto the toner waste port B by the toner pushing member 8, it does not enter into the waste toner storage box 10, and the surplus space is , the IT waste toner storage box 10, which is just a space, had to be taken out of the copying machine and the toner removed. Even if the space for the waste toner storage box to become a rectangular parallelepiped box could be secured in the copying machine, powder Due to the nature of the body, waste toner can only be stored in a triangular cross section with an inclined surface represented by the angle of repose. Due to this restriction, it becomes necessary to frequently take out the waste toner storage box from the copying machine to remove the toner, and it is necessary to force inexperienced general users to remove toner and feel inconvenience. This has the disadvantage that it pollutes the copying machine and the surrounding environment.

OBJECTS OF THE INVENTION The present invention eliminates the drawbacks of the above-mentioned conventional examples, and provides a cleaning device that stores toner removed from an electrostatic recording medium so as to fill a storage box, and can be easily disposed of. The purpose is to

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a housing having an opening facing the electrostatic recording medium and a toner disposal port, and a cleaning means for removing toner from the electrostatic recording medium within the housing. a waste 1/s storage box communicating with the toner waste port of the housing; and a waste 1/s push member;
The waste toner pushing member is rotated. The waste toner pushing member is rotatably supported within the waste toner storage box, and the waste toner pushing member is rotatably driven by the driving means.

Description of examples The present invention will now be described in detail with reference to the drawings.

FIG. 2 is a sectional view of a main part of a cleaning device according to an embodiment of the present invention, showing a conventional example, and the same parts as in FIG. 1 are designated by the same reference numerals. In the embodiment of the present invention, as shown in FIG. 2, a rotating shaft 4 and a driven drive 1lIII5 are installed below the toner waste port B of the housing 2 and in a portion corresponding to the toner receiving port inside the waste toner storage box 10. A toner pushing shaft 13 is rotatably supported in parallel, and a waste toner pushing member 14 is fixed to the first pushing shaft 13.
It is configured to be rotationally driven in the direction of the arrow. In addition,
The toner pushing shaft 13 supports a portion 2b of the side wall 2a of the housing 2 which projects inside the waste toner storage box 10 as a bearing portion.

As illustrated in FIG. 3, the toner pushing shaft 13 is configured to be interlocked by a driven shaft 5, a belt 15, and a pulley 16. Waste toner storage box 10i7J, with the opening that is the 1.S. receiving port facing the toner waste port B of the housing 2, communicating with the inside of the casing 2, and a seal affixed near the 1.S. disposal port. In order to seal the opening so that toner does not leak from the opening when pressed by the cleaning sponge 17, it is held in the housing 2 of the cleaning device in a vertically removable manner using a holding fitting (not shown).

In this embodiment, the toner 9 scraped off from the photosensitive drum 1 by the rubber plate 1-''3 and scattered directly under the rubber plate 3 is transferred to the toner pushing member 8 which is applied to the ladder chain 7 by the rotation of the rotating shaft 4. Then, it is pushed out to the waste toner port B of the housing 2, and the waste toner storage box 1 is pushed out.
The page falls into 0. 1 that fell into the waste toner storage box 10
- As shown in Figure 4 (a), the toner is simply piled up like a small mountain at the bottom of the waste toner storage box.
It does not touch 4, but when Oki SE9 and Toner 11 increase, the 4th
As shown in Figure (b), it is pushed in in the direction of arrow E by the l/s-pushing member 14. Figure 4 (
In b), the toner extrusion member 8 pushes out the toner toner disposal port B and falls into the waste storage box 1o as shown by the arrow F, and the toner rotates in the direction of the arrow.
- Since the toner is carried away by the pushing member 14 in the direction of the arrow E, the 1.S.
The reception is accepted. As l.s. continued to enter, finally the fourth
As shown in Figure (C), the inside of the waste storage box 10 is
-Su-11 is full.

Note that a two-dot chain line G in the figure indicates a toner storage limit line in a conventional configuration that does not include the toner pushing member 14.

In this embodiment, the toner pushing member 14 is rotated in the direction indicated by the arrow, but this is not limited to this embodiment. Furthermore, the same effects as described above can be obtained even if the device is configured to swing in the left and right directions shown in the figure.

Advantages of the Invention As described above, the present invention has the advantage that toner can be stored without leaving a large surplus space in the waste toner storage box. This not only has the advantage that the space within the copying apparatus can be used effectively, but also has the advantage that the period during which the waste toner storage box is full of toner is doubled compared to the conventional method. Currently, it is common practice for desk-top copying machines to have a professional serviceman perform periodic inspections every 20,000 to 30,000 copies. Stores waste toner for more than one copy corresponding to the interval,
There are advantages to being able to do so. Not requiring general users to perform waste toner removal work has the advantage of improving usability for users and preventing soiling of the inside and surroundings of the copying machine with waste toner due to clumsiness.

Still, according to the present invention, one part of the housing of the cleaning device
- The waste toner dropped into the waste port is always pushed into the waste toner storage box, and the toner waste port forms a space to receive new waste toner. It has the advantage that it does not backflow or stagnate.

By pushing the toner into the waste toner storage box, even if the storage box has a deep shape in the horizontal direction,
Since the waste toner is pushed into a place that cannot be reached by its own weight alone, there is an advantage that the waste toner storage box can be expanded in the horizontal direction and a large amount of waste toner can be stored.

However, since the present invention has a structure in which the toner pushing part is rotated at a constant speed in the waste toner storage box, the load torque of the rotation drive is small, and the rotation is smooth and there is no impact, so the photosensitive drum Even if the driving force is obtained from the photosensitive drum, the photosensitive drum rotates smoothly and stably, so the photosensitive tram rotates in a pulsating manner, causing so-called jitter, a fine irregularity on the image. It has the advantage that there is no

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a main part of a conventional cleaning device, and FIG. 2 is a sectional view of a main part of an embodiment of a cleaning device of the present invention.
FIG. 3 is a partially sectional perspective view of the embodiment of the present invention;
FIGS. 4(a), 4(b), and 4(c) are sectional views of essential parts showing the operating state of the embodiment of the present invention. 1...Photosensitive tram, 2...Housing, 3...
・Rubber blade, 8... Toner extrusion member, 1
0...Waste toner storage box, 11...Toner,
12... Surplus space, 14... Toner pushing member. Name of agent: Patent attorney Toshio Nakao and 1 other person
1 Figure 4 Figure 4 (C-n

Claims (3)

[Claims] (1) A casing having an opening facing the electrostatic recording medium and a toner waste port, a cleaning means for removing toner from the electrostatic recording medium within the casing, and communicating with the toner waste port of the casing. A waste toner storage box, a waste toner pushing member, and a drive means for rotating the waste toner pushing member, the waste toner pushing member being rotatably supported within the waste toner storage box, and a drive means for rotating the waste toner pushing member. A cleaning device characterized in that the driving means is configured to rotationally drive the waste toner pushing member. (2) Disposal 1. The cleaning device according to claim (1), characterized in that the storage box is configured to be detachable from the housing. (3) The cleaning device as set forth in claim (1), characterized in that the driving means for rotating the disposal and toner pushing member is linked with the driving means for the electrostatic recording medium.