JPS5994761A - Manufacture of electrophotographic photosensitive body - Google Patents

Abstract

PURPOSE:To improve transferability of toner, separability of paper, and cleanability by roughening the surface of a photosensitive layer made of an Se type photoconductor deposited on a conductive substrate of an aluminum cylinder or the like by the liquid honing method to a specified surface roughness. CONSTITUTION:An Se type photoconductive layer made of Se-As alloy or the like is deposited on a conductive substrate of an aluminum cylinder, and the surface of this photosensitive layer is roughened to <=40mum surface roughness, preferably to the range of 0.1-1.0mum by the liquid honing method. Since the specularly finished surface of the photosensitive layer formed on the substrate is roughened by the liquid honing method, the conditions of the surface roughness of the conductive substrate and vapor deposition, etc. need not be set delicately. Transferability of toner, separability of paper, and cleanability are improved without impairing the photoconductive characteristics of the photosensitive layer. Any defect of an image, such as spots or white streaks, due to working defects of the surface is not found on the image.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for producing an electrophotographic photoreceptor, which comprises forming a photosensitive layer made of a selenium-based photopropylene material on a conductive substrate.

This German photoconductor can be used with copiers, printers, etc.
After forming a latent image using exposure air, an image is formed on the rough surface by development and transfer, and finally, the burden remaining on the surface is removed and the residual toner that cannot be used for image formation is cleaned. Tosat Lru. Conventionally, it has been believed that the surface of the photosensitive layer of g) A photoreceptor must be smooth from the viewpoint of image formation and reliability. However, if the surface of the photosensitive layer is too smooth, there are the following drawbacks.

1) The frictional force between the cleaning blade and the photoreceptor increases 1, and scratches, which are image defects that appear as white streaks on the image, are generated on the surface of the photoreceptor layer.

2) The adhesion between the toner and the photoreceptor increases, resulting in poor toner transferability and cleaning performance.

3) The adhesion to the transfer paper increases, and the separation of the paper deteriorates.

It has recently been found that in order to eliminate such defects, the surface of the photosensitive layer should be more rough.

However, in the currently widely used photoreceptors, a pure Se alloy is used as the photoconductive material of the photosensitive layer, and an amorphous Se-based material is deposited on the conductive substrate by a wall deposition method or the like. When the surface of such a Se-based photosensitive layer comes into contact with foreign matter, crystallization occurs9.
Furthermore, if there were processing marks like sushi, they would appear in the image, so surface processing was not considered.

SUMMARY OF THE INVENTION An object of the present invention is to provide a method for manufacturing a photoreceptor in which the surface of the photoreceptor layer can be roughened to an appropriate roughness without impairing the characteristics of the photoreceptor layer.

This objective is achieved by depositing a photosensitive layer made of a selenium-based photoconductive material on a conductive substrate and then roughening the surface to a surface roughness of 4.0 ILyyL or less by a liquid honing method.

Embodiments of the present invention will be described below with reference to the drawings. As shown in FIG. 1, a photosensitive layer 2 made of selenium or a selenium alloy is deposited on a conductive substrate 1, for example, a Fluminiram cylinder, in a conventional manner. Next, as shown in FIG. 2, the aluminum cylinder 11 coated with such a photosensitive layer is placed on top of the rotating table 12, and as it is rotated, fine abrasive grains are injected from the nozzle 14 which reciprocates in the axial direction of the cylinder 12 as shown by the arrow 13. A jet of liquid 15 containing . Sea A as a light guiding material
The processing conditions, surface roughness, image quality, and cleanability of the photosensitive layer using the s-alloy were evaluated first.
Show the table. In the table, the mark ○ indicates good, the mark Δ indicates slightly poor, and the mark X indicates unusable.

Table 1: According to the liquid honing method, the surface of the photosensitive layer has a satin-like irregular roughness, and when the roughness ranges from OJ to 3DPm-, no processing marks appear on the image, and no image defects such as white sushi occur. The condition was good with no outbreaks. However, if the surface roughness is 4 μm or more, toner will enter the surface recesses, resulting in poor cleaning. In addition, point-like charging unevenness occurs, resulting in image defects.

Therefore, the surface roughness obtained by liquid honing is preferably within the range of not exceeding 40 μm, and particularly within the range of 0.1 to 1.0 μm.

As described above, in the present invention, the surface of the mirror-like photosensitive layer formed on the substrate is appropriately roughened by the liquid honing method. Since the conventional excessive photosensitive layer formation method can be applied, it is possible to easily obtain a Kameko photographic photoreceptor with good toner transfer properties, paper separation properties, and cooling properties. The effect is extremely strong.

[Brief explanation of the drawing]

FIG. 1 is a conceptual partial cross-sectional view of a photoreceptor according to an embodiment of the present invention, and FIG. 2 is a cross-sectional view showing an example of an apparatus for carrying out the present invention. l... 4N substrate, 2... Photosensitive layer, 3 - Rough surface, 11
...Aluminum cylinder, 14...Nozzle, -15...
Liquid jet containing abrasive particles. ″2r1 figure

Claims (1)

[Scope of Claims] 1) After depositing a photosensitive layer made of a selenium-based photoconductive material on a conductive substrate, the surface of the photosensitive layer is roughened to a surface roughness of 40 μm or less by a liquid honing method. ′r characterized by
A method for manufacturing a photoconductor for L-photography. 2) 4? A method for producing an electrophotographic photoreceptor, characterized in that the surface roughness of the obtained rough surface is within the range of OJ to 1.0 μm in the method described in item 1.