Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – Radiation-sensitive composition or product
Patent
1989-04-12
1992-04-21
McCamish, Marion E.
Radiation imagery chemistry: process, composition, or product th
Electric or magnetic imagery, e.g., xerography,...
Radiation-sensitive composition or product
430 69, 430 95, G03G 1500, G03G 1504, G03G 1508
Patent
active
051067110
ABSTRACT:
The present invention relates to an electrophotographic sensitive member comprising a photoconductive amorphous silicon carbide layer.
An amorphous silicon layer has superior abrasion resistance, heat resistance, antipollution property, photosensitive characteristic and the like.
However, an amorphous silicon layer itself has a low dark resistance, so that dopants, such as boron, are added thereto but a dark resistance of 10.sup.12 .OMEGA..multidot.cm or more required for the case where it is used as an electrophotographic sensitive member has never been obtained.
The present inventors have found before that an amorphous silicon carbide layer has a large carrier-mobility and photoconductivity and its dark resistance of 10.sup.13 .OMEGA..multidot.cm or more can be easily obtained regardless of the existence of dopants and furthermore an electrophotographic sensitive member, which can be positively and negatively charged by the selection of the dopants, can be obtained. The present invention provides an electrophotographic sensitive member capable of improving the photosensitive characteristics and the like to improve electrophotographic characteristics, as desired, with an a-SiC layer as a substantial photoconductive layer and substantially without requiring a surface protective layer and a barrier layer.
REFERENCES:
patent: 4403026 (1983-09-01), Shimizu et al.
patent: 4471042 (1984-09-01), Komatsu
patent: 4532150 (1985-07-01), Endo et al.
patent: 4859554 (1989-08-01), Yamazaki et al.
patent: 4882252 (1990-11-01), Kawamura et al.
Ishibitsu Kokichi
Kawamura Takao
Miyamoto Naooki
Takemura Hitoshi
Watanabe Satoru
Crossan Stephen C.
Kawamura Takao
Kyocera Corporation
McCamish Marion E.
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