Pyrylium-sensitized leuco base photoconductive compositions and

Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – Radiation-sensitive composition or product

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430 73, 430 74, 430 83, G03G 506

Patent

active

044684444

ABSTRACT:
Photoconductive compositions and elements comprising arylalkane photoconductors and pyrylium sensitizers are stabilized against adverse leuco base color shifts into the ultraviolet to blue spectral region by the incorporation of certain 1,4,5,8-naphthalene bis-dicarboximide compounds. The compositions and elements are particularly suited for electrophotographic image formation and thereafter for contact printing of the image onto sensitive material by ultraviolet or blue transmission through the composition or element.

REFERENCES:
patent: 3542547 (1970-11-01), Wilson
patent: 4286036 (1981-08-01), Hendriksma
patent: 4301226 (1981-11-01), Contois et al.
patent: 4423126 (1983-12-01), Klijanowicz et al.

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