JPH0389384A - Photosensitive body cleaning device - Google Patents

Abstract

PURPOSE:To facilitate the photosensitive body inserting work by constituting the device so that when a photosensitive body is drawn out, an end part of the photosensitive body inserting side of a cleaning blade is separated from an inserting path, and in an inserted state, the overall length of the cleaning blade is supported so as to be pressed automatically against the outside peripheral surface of the photosensitive body. CONSTITUTION:When a photosensitive body 1 is drawn out along the axial direction from the device body, a blade end part of the photosensitive body 1 inserting side of a cleaning blade 2 is separated from the photosensitive body 1 inserting path, and also, in a state that the photosensitive body 1 is inserted, the overall length of the cleaning blade 2 is supported so as to be pressed automatically against the outside peripheral surface of the photosensitive body 1. Accordingly, when the photosensitive body 1 is removed from the device body, the blade end part of the photosensitive body 1 inserting side is inclined so as to be separated from the photosensitive body 1 inserting path, and at the time of inserting the photosensitive body 1, the cleaning blade does not become an obstacle. In such a way, the photosensitive body is inserted easily, and the photosensitive body is not flawed at the time of insertion, not the cleaning blade damaged.

Description

[Detailed Description of the Invention] [Summary] The present invention relates to a cleaning blade mounting structure of a photoconductor cleaning device of an electrophotographic apparatus, and an object of the present invention is to facilitate the work of inserting a photoconductor and prevent damage to the photoconductor or the cleaning blade. When the photoconductor is pulled out from the apparatus main body in the axial direction, the blade end of the cleaning blade on the photoconductor insertion side is separated from the photoconductor insertion path, and with the photoconductor inserted, the entire length of the cleaning blade is It is configured to be supported so as to automatically come into pressure contact with the outer circumferential surface of the photoreceptor.

[Industrial application field]

The present invention relates to a cleaning blade mounting structure for a photoreceptor cleaning device of an electrophotographic apparatus, and more particularly to a cleaning device that facilitates insertion of a photoreceptor.

[Conventional technology]

The conventional cleaning blade 2 is composed of an elastic body 4, a metal plate 5, etc., as shown in FIG. The elastic body 4 is fixed to a metal plate 5, and the metal plate 5 has a central part (center of gravity) attached to a bracket 8.
It is movably supported by a support shaft 3 provided with a cylindrical photoreceptor 1, and is attached so as to press an elastic body 4 parallel to the outer peripheral surface of the cylindrical photoreceptor l. Note that the rear end of the bracket 8 is provided with a convex portion that serves as a stopper 6 as shown in FIG. 3 (al), so the movement of the cleaning blade 2 is as shown in FIGS. As shown, the rear edge of the metal plate 5 is restricted to a position where it abuts against the stopper 6. That is, the cleaning blade 2 can swing left and right within the position restriction range of the stopper.

Therefore, when inserting and removing the cylindrical photoreceptor 1 along its rotation axis 9 as shown in FIG. It swings to the left or right to absorb the displacement of the outer circumferential surface due to vibration on the shaft due to the deflection of the rod or the like. As a result, the cleaning blade 2 has flexibility when replacing the photoreceptor, and at the final insertion position, it is positioned so as to be in parallel contact with the entire length of the photoreceptor 1, allowing for uniform cleaning.

[Problem that the invention seeks to solve]

As mentioned above, the conventional cleaning blade is swingable in the left and right directions, so when it is removed from the main body of the apparatus to replace the photoconductor, for example, it is tilted as shown in FIGS. 5(a) and 5(b). It becomes.

That is, the photoreceptor 1 has a guide rod 10 connected to the outer end of the rotation shaft 9 of the photoreceptor, and is set at a set position 1 along the axial direction.
The cleaning blade 2 also swings due to this operation. Cleaning blade 2 is the fifth
There is no problem if it is tilted as shown in Figure (a), but if it is tilted to the right as shown in Figure 5 (bl), the left end 2a of the cleaning blade 2 will enter the photoconductor insertion path, so be sure to replace it. When inserting a new photoreceptor 1, there are problems in that not only is it difficult to insert the new photoreceptor 1, but the outer peripheral surface of the photoreceptor 1 is scratched by the metal plate 5, and the cleaning blade 2 is also damaged.

SUMMARY OF THE INVENTION In view of the above-mentioned problems, it is an object of the present invention to facilitate insertion work such as when replacing a photoreceptor, and to prevent damage to the photoreceptor or cleaning blade.

[Means for solving problems]

In order to solve the above-mentioned problems, in the present invention, when the photoconductor is pulled out from the apparatus main body along the axial direction, the blade end of the cleaning blade on the photoconductor insertion side is separated from the photoconductor insertion path, and With the photoreceptor inserted,
The entire length of the cleaning blade is supported so as to be automatically brought into pressure contact with the outer peripheral surface of the photoreceptor.

[For production]

When the photoconductor is removed from the device main body, the blade end on the photoconductor insertion side tilts away from the photoconductor insertion path, so the cleaning blade no longer becomes an obstacle when inserting the photoconductor, making it easier to insert the photoconductor. .

〔Example〕

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

FIG. 1 is a diagram showing a cleaning blade support structure to which the present invention is applied. The cleaning blade 2 is made up of an elastic body 4 and a metal plate 5. The elastic body 4 is fixed to the metal plate 5, and the metal plate 5 is supported by a support shaft 3 at a point remote from the center center of gravity. ing. This support shaft 3 is the third
As in the case of the conventional side view shown in FIG. is oriented so that it can respond to gravity. When the photoreceptor 1 is set, the entire length of the cleaning blade 2 is in pressure contact with the outer peripheral surface of the photoreceptor 1.

Next, the work procedure will be explained. As in the conventional example shown in FIG. 5(a), is the photoreceptor 1 set in the main body of the apparatus along the direction of its rotation axis 9? &1", the cleaning blade 2 is supported only at the support shaft point. In the case of the present invention, the center of gravity is shifted from this support point toward the insertion end, so the cleaning blade 2 is moved by gravity. , the blade end 2a on the photoreceptor insertion side automatically tilts away from the photoreceptor insertion path and stops at the position where it hits the stopper 6 of the bracket 8 provided with the support shaft 3.

Therefore, when the photoreceptor 1 is inserted thereafter, the end portion 2a of the cleaning blade 2 can be operated smoothly without hitting the photoreceptor 1.

FIG. 2 shows another embodiment, in which the compressive force of the spring 7 is applied to the side opposite to the insertion end of the photoreceptor, so that when the photoreceptor is pulled out regardless of the position of the support shaft, the photoreceptor is automatically inserted. The end side is configured to be removed from the insertion path.

〔Effect of the invention〕

According to the present invention, it is possible to easily insert the photoreceptor, and there is no possibility of damaging the photoreceptor or damaging the cleaning blade during insertion.

[Brief explanation of drawings]

FIG. 1 is a diagram showing an embodiment of the present invention, FIG. 2 is a diagram showing another embodiment of the present invention, and FIG. 3 is a diagram showing a conventional cleaning blade. b) is a top view, FIG. 4 is a diagram showing the swing range of the cleaning blade, and FIG. 5 is an explanatory diagram of the work procedure. In the figure, 1 is a photoreceptor, 2 is a cleaning plate 3 is a support shaft, and 7 is a spring. Side view fat Top view ~) Conventional cleaning blade Figure 3'! A4 diagram

Claims (1)

[Claims] A cleaning blade (2) is pressed parallel to the outer peripheral surface of a cylindrical photoreceptor (1) that is removably supported on a rotating shaft (9) to remove residual toner on the photoreceptor (1). The cleaning blade (2) is configured such that when the photoreceptor (1) is pulled out from the apparatus main body along the axial direction, the blade end (2a) on the photoreceptor insertion side is attached to the photoreceptor insertion side. A photoreceptor cleaning device characterized in that the entire length of the cleaning blade is supported so as to automatically come into pressure contact with the outer peripheral surface of the photoreceptor when the photoreceptor (1) is inserted away from the path.