Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – Radiation-sensitive composition or product
Patent
1993-01-07
1994-10-25
Goodrow, John
Radiation imagery chemistry: process, composition, or product th
Electric or magnetic imagery, e.g., xerography,...
Radiation-sensitive composition or product
430 60, 430 65, 430131, G03G 5047
Patent
active
053588126
ABSTRACT:
The step of conducting an anodic oxidation of an aluminum substrate in a sulfuric acid bath, and the further step of conducting an anodic oxidation of the aluminum substrate in an organic acid bath, are conducted in this order, with the organic acid capable of staining the substrate. In this way, an anodized stained membrane having a thickness of 0.5-4 .mu.m is formed on the substrate so as to be covered with a sulfate membrane which is 3-20 .mu.m thick. An evenly roughened interface is provided between the stained membrane and the sulfate membrane in such a state that the light beam incident upon or reflected by the surface of the substrate is refracted in a diffused manner. A photosensitive layer composed of an organic material is formed on the sulfate membrane.
REFERENCES:
patent: 5162185 (1992-11-01), Fukuda et al.
patent: 5219691 (1993-06-01), Fukuda et al.
Goodrow John
Showa Aluminum Corporation
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