Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – To produce printing surface
Patent
1992-04-07
1994-08-30
Kight, III, John
Radiation imagery chemistry: process, composition, or product th
Electric or magnetic imagery, e.g., xerography,...
To produce printing surface
430 96, 430204, 430205, 430300, 430302, 430304, 430310, G03G 1328
Patent
active
053427840
ABSTRACT:
Provided is an electrophotographic photoreceptor which comprises an electrically conductive support and a photoconductive layer comprising at least an organic photoconductive compound and an alkali and/or alcohol soluble binder resin provided on said support and which is used for making a lithographic printing plate therefrom by electrophotographically forming a toner image and decoating the photoconductive layer of non-image portion other than the toner image portion by contacting with an alkaline decoating solution, wherein an arithmetical mean deviation of profile (Ra.sub.1) of the surface of said electrically conductive support having said photoconductive layer thereon is 0.3-1.0 .mu.m and a ratio of Ra.sub.2 /Ra.sub.1 of an arithmetical mean deviation of profile (Ra.sub.2) of the surface of said photoconductive layer and the (Ra.sub.1) is 0.5-1.0. The image formed on the printing plate is free from indentation at the edge of the image. Resolution and sharpness of the image are improved.
REFERENCES:
patent: 4482444 (1984-11-01), Frass et al.
Shinohara Seiji
Yamada Jun
Kight III John
Mitsubishi Paper Mills Limited
Truong Duc
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