G - Physics – 03 – G
Patent
G - Physics
03
G
117/23
G03G 5/10 (2006.01) G03G 5/07 (2006.01)
Patent
CA 1037321
ABSTRACT OF THE DISCLOSURE Process for preparation of photoconductive films from at least one cyclic compound of the formula: Image wherein Ar is a polyaromatic nucleus selected from the group consisting of diradicals of napthalene, anthracene, pyrene and carbazole; X and Y are independently selected from the group consisting of halogen, NO2, NH2, lower alkyl, phenyl, phenoxy, carboxy, hydroxyl, lower alkyl esters and aryl esters; and m and n range from 0 to the total number of replacable hydrogens on the polyaromatic nucleus; The process comprises heating at least one of the above compounds in an evacuated chamber at temperatures sufficient to vaporize said compound and thereafter cracking and condensing said vapors on a suitable surface. The temperature of the surface on which such vapors are condensed can be adjusted to either permit or retard the polymerization of the condensate. The film thus produced can be stripped from this surface or, if this surface is conductive, used in conjunction wherewith as an imaging member in electrophotography.
191212
Levy Moshe
Pearson James M.
Williams David J.
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