JPS58174955A - Manufacture of electrophotographic receptor - Google Patents

Abstract

PURPOSE:To obtain the entitled photosensitive material having a photoconductive layer good in toner transferability, separability of transfer paper, and cleanability, by forming a vapor-deposited layer of an Se type material onto a substrate not below its Tg, and then, vapor-depositing an Se-Te alloy at lower temp. CONSTITUTION:An Se type material, such as Se-As alloy, is vapor-deposited onto a conductive substrate 1 (e.g., polycarbonate or the like insulator can be used, and one side of it is treated to make it conductive, using Al, Fe, Cu, etc., as conductive materials) maintained not below the glass transition temp. (Tg) of the substrate 1 to form a high-temp. vapor-deposited layer 2. Then, An Se-As alloy is vapor-deposited onto this substrate 1 maintained at 25-130 deg.C to laminate a low-temp. vapor-deposited layer 3. Even if the surface of the substrate 1 is rough, since the layer 2 is deposited not below Tg, the surface becomes smooth, but insular or granular parts are formed on the surface of the layer 3 because of low-temp. vapor deposition, thus obtaining a desired surface roughness.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for producing an electrophotographic photoreceptor that provides a photoconductive layer with good vibration resistance.

The electrophotographic photoreceptor is used for forming an image on the surface of a photoconductive layer by a diaphragm process and a shaguang process, followed by a development process and a transfer process. After completing this series of steps, there is a step of removing the charges remaining on the photoconductive layer, and a step of removing the charge remaining on the photoconductive layer.
A cleaning process is included to remove residual toner that has not been subjected to N formation, and the quality of printing properties (during the next formation, this affects whether or not a quality image can be obtained). A photoconductive layer with excellent cleanability is required.

Conventional electrophotographic photoreceptors have poor image forming properties or
The surface of photoconductive I was required to be smooth from the viewpoint of stability, and was formed with a glossy mirror surface.

However, such a photoconductive layer has a large adhesion force to the transfer paper or toner, and often has the disadvantage that transferability, separation of the transfer paper, cleaning/cleaning properties of the toner, etc. are impaired. For this reason, mechanical toner removal devices that apply excessive force to the surface of the conductive layer are used to remove residual toner, resulting in damage to the surface of the photoconductive layer, shortening the life of the photoreceptor, and reducing the lifetime of the photoreceptor.
This was a contributing factor to the overall decline in vows. Recently, it has been found that it is more effective to make the surface of the optical fiber moderately rough in order to overcome these drawbacks.

An object of the present invention is to provide a method for easily manufacturing an electrophotographic photoreceptor having a photoconductivity increaser having a moderately rough surface.

The purpose is to deposit a selenium-based material onto a conductive substrate maintained at a temperature above about the glass transition temperature of the material;
This is then accomplished by depositing the seleno-arsenic alloy while holding the substrate at 25-130°C.

In general, selenium or selenium alloys have a glass transition temperature! f(
The viscosity suddenly increases near Tg), and the flow rate fluctuates. 'f
That is, at aK above around 'rg, the fluidity increases,
In comparison, the fluidity is reduced. Therefore, when forming the photoconductive layer of a photoreceptor using selenium thread material using the Prefecture 72 #4 method, the fluidity varies due to the base temperature tIjLl, and the temperature is 5.
When the ii degree decreases, the group N+ is unaffected by the properties of the substrate
- It was found that fine irregularities can be imparted to the surface. However, the seletellurium alloy used as the selenium thread base conductive layer of conventional photoreceptors has a low Tg, and even if a rough surface is formed by vapor deposition on a low mf substrate, the temperature rise during use as a photoreceptor The surface becomes smooth due to flow. In order to avoid this, in the present invention, Table III] lI4
1I is made of a 5eAs alloy with high g. However, if a low-temperature vapor-deposited layer is applied directly onto the substrate, the adhesion to the substrate is insufficient, so a vapor-deposited layer of selenium thread material is formed on the substrate at a temperature above its glass transition temperature to form a smooth surface. 5e-As alloy surface: ITI' pass is formed at low temperature. This results in a light guide 1 consisting only of low-temperature deposited layers! With cf@l, it was also possible to avoid the phenomenon in which the surface becomes negatively charged during AC neutralization.

7' Embodiments of the present invention will be explained with reference to the figure below.
,. 5e-As on the 4th electric sexual intercourse body 1
A high @A vaporized shoulder layer 2 and a low temperature vaporized layer 3 of alloy are layered. The support 1 is cylindrical, sheet-shaped, etc.
E-edge materials such as polycarbonate, polyvinyl chloride, polyethylene, and glass that have been treated with conductivity can also be used.As conductive materials, for example, aluminum, iron, @ya
'Which kinne or @kin is used. The vapor deposition no. 2 may be deposited via the support 1 and the barrier no. The barrier layer is formed by, for example, Al hexagonal oxidation treatment. Support 1
Even if the surface of the vapor deposition layer 2 is rough as shown in the figure, the temperature of the vapor deposited layer 2 is 180 to 300°C, which is higher than the glass transition vortex layer, for example, 200 to 300°C.
2 s O'0o)yibKr Since the heated support 1 is provided in a highly fluid state, the support I
Q) Creates a smooth surface regardless of surface texture. The support l coated with this vapor deposition j-2 was heated to 25~1;30°C.
For example, when a 5e-As alloy is deposited in the same manner at 100°C to form the vapor deposited layer 3 on the surface side, island-like or granular parts are formed on the surface 4 due to the low fluidity. Provides surface roughness. The surface roughness to be given is U.
, a range of 1 to 2 μm can be used, especially 02 to 1 μIn
It is preferable that the size of the unevenness is smaller than the particle size of the toner used in the surface direction. If the unevenness is larger than this, spot-like charging unevenness will occur, causing defects on the image.

Further, if the unevenness is too small, the desired improvement in cleaning performance according to the present invention cannot be obtained.

Even if the surface of the support 1 is not 7.1' in area as shown in FIG. 1 but is smooth as shown in FIG. The surface roughness of A; t can be obtained.

The vapor deposition layers 2.3 may be formed continuously in the same vacuum chamber, or the vapor deposition layer 112 may be formed and then exposed to an atmospheric pressure atmosphere and subsequently deposited with NIL in another vacuum chamber. -3 can also be formed. 1 m2 of vapor deposited is not SeAs alloy but other S such as pure Se or Se-Te alloy.
They may also be formed by vapor depositing e-based materials at their respective glass transition temperatures. It is certain that the electrophotographic properties of the photoconductive layer formed according to the present invention are not inferior to those of the conventional photoconductive layer having a smooth IP surface.
*CI for the purpose of improving sex.

It is also possible to add known substances such as 1, S, and Sb. Further, the As-Se alloy may be a compound having the composition of AsaSeJ.

According to the present invention, lt, 0.2 to 0.4 μml on the surface of the 4-electrolayer
] A photoreceptor was produced that was fairly uniform and could handle fine irregularities, and this photoreceptor was mounted on a commercially available Tawara Shashin and repeated image tests were conducted. For comparison, we conducted a test at the same time using a photoconductor with a smooth photoconductor surface, and found that the photoconductor with a smooth surface required refining after copying 20,000 copies. However, in the case of the photoreceptor based on the present invention, no deterioration in #J quality was observed even after 20,000 copies were made, and the cleaning performance was improved and the surface of the photoconductive layer was not damaged. was recognized.

As stated above, the present invention is truly outstanding! By setting the soaking temperature in two stages, high and low, during the vaporization process, the surface of the photoconductive layer is roughened, resulting in improved transferability, decomposability of the transfer paper, and cleaning performance, and is different from conventional equipment. A photoreceptor for electronic four-tools that can be easily carried out using only conventional materials, exhibits a light guide of comparable electrophotographic properties, and has a long lifespan is obtained. This can be applied.

[Brief explanation of drawings]

FIG. 1 shows a photoreceptor for an electronic donor according to an embodiment of the present invention.
The r-plane view and FIG. 2 are cross-sectional views of a photoreceptor according to another embodiment. 1: Conductive work body, 2: l1fi! #layer layer, 3: low'Or
A Island Bu 11 [) 1-1゜ years old Figure 20 years old

Claims (1)

[Claims] 1) Use a selenium-based material at a temperature higher than the glass transition temperature of the material.
1. A method for producing a photoreceptor for photographic containers, which comprises depositing a selenium-arsenic alloy on a conductive substrate held at a temperature of 25 to 130°C.