Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – Radiation-sensitive composition or product
Patent
1987-08-04
1989-05-02
Goodrow, John L.
Radiation imagery chemistry: process, composition, or product th
Electric or magnetic imagery, e.g., xerography,...
Radiation-sensitive composition or product
430945, G03G 514
Patent
active
048267481
ABSTRACT:
The present invention relates to an electrophotographic sensitive member for use in a laser line printer.
A laser line printer using a laser beam as a recording member has been known for a small-sized, light, low power consumption, high-density and high-speed recording method. For example, a semi-conductor laser printer and an electrophotographic sensitive member mainly formed of amorphous silicon used therein are being watched with interest.
However, since this laser beam is monochromatic, a laser beam incident upon the inside of a photosensitive layer is very much inclined to be not sufficiently absorbed by the photosensitive layer to reach an electrically conductive substrate and be reflected at the surface of the electrically conductive substrate.
With a photosensitive member having a photosensitive layer laminated on an electrically conductive substrate, there has been a problem in that a part of an incident ray such as a semiconductor laser ray is reflected by the electrically conductive substrate and if a part of this reflected ray is reflected by the surface of the photosensitive layer again, an interference occurs between this twice reflected ray and the incident ray to produce an interference fringe on a charge latent image whereby an interference fringe-like concentration unevenness on the image after developing.
The present invention was achieved in order to eliminate the above described problem and it is an object of the present invention to provide an electrophotographic sensitive member, in which a photosensitive layer having at least a photoconductive layer is laminated on an electrically conductive substrate and a laser beam is incident upon a surface side of said photosensitive layer to generate an optical carrier in said photoconductive layer, characterized by that an interference of an laser beam can be reduced to prevent a stripped pattern from generating on an image by forming said photosensitive layer on said electrically conductive substrate through an intermediate layer and selecting a .times.b.sup.2 .times.c of 0.2 or less, wherein a is a transmission factor of said laser beam through said photosensitive layer, b being a transmission factor of said laser beam through said intermediate layer, and c being a reflection factor of said laser beam by said substrate.
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patent: 4461819 (1984-07-01), Nakagawa et al.
patent: 4491626 (1985-01-01), Kawamura et al.
patent: 4654285 (1987-03-01), Nishiguchi
Jacobs "Applied Optics" vol. 17 #13 2001-2006 7/1/78.
Kawamura Takao
Nakayama Yoshikazu
Goodrow John L.
Kawamura Takao
Kyocera Corporation
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