Electrophotographic photosensitive member and image forming proc

Details Electrophotographic photosensitive member and image forming proc Electrophotographic photosensitive member and image forming proc

1991-08-05

1992-04-07

Martin, Roland

Radiation imagery chemistry: process, composition, or product th

Electric or magnetic imagery, e.g., xerography,...

Radiation-sensitive composition or product

430 59, 430100, 430126, G03G 509, G03G 5047, G03G 1322

Patent

active

051027577

ABSTRACT:
An electrophotographic photosensitive member has a charge-generating layer which includes selected photosensitive pigment particles and a compound which is a tetracyanoanthraquinodimethane compound, an anthraquinone compound, a dicyanovinyl compound, or a special quinone compound. The compound is incorporated in an amount in a range from 0.01 to 2 molar equivalents, preferably 0.1 to 1 molar equivalent, to the pigment, which has a positive hole transporting property. The photosensitive member has a charge-transporting layer and can also have a protective layer. The pigment is a phthalocyanine series pigment, a squearyrium series pigment, or a perylene series pigment. A process of using the photosensitive member includes reversal development and multicolor toner transfer. It is found that the process is adaptable to change in size of the transfer medium.

REFERENCES:
patent: 3877935 (1975-04-01), Regensburger et al.
patent: 4390609 (1983-06-01), Wiedemann
patent: 4882254 (1989-11-01), Loutfy et al.

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