Electrophotographic photosensitive member and image forming proc

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

1991-06-20

1992-02-04

Martin, Roland

Radiation imagery chemistry: process, composition, or product th

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

Radiation-sensitive composition or product

430 59, 430 83, 430900, G03G 5047, G03G 509

Patent

active

050859609

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-supporting 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: 4184871 (1980-01-01), Oba et al.
patent: 4818653 (1999-04-01), Wiedemann et al.
patent: 4835081 (1989-05-01), Ong et al.
"A New High-Sensitivity Organic Photoconductor for Electrophotography", by R. M. Schaffert, Organic Photoconductor Research and Development, pp. 75-89, Jan. 1971.

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