Electrophotographic photosensitive member and image forming proc

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

1991-10-16

1992-10-06

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

051530856

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 photossensitive member has a charge-transporting layer and can also have a protective layer. The pigment is a phthalocyanine series pigment, a squearyrium series p igment, 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: Re29554 (1978-02-01), Baltazzi
patent: 3864126 (1975-02-01), Nishide et al.
patent: 4818653 (1989-04-01), Wiedemann et al.
patent: 4835081 (1989-05-01), Ong et al.
patent: 5011757 (1991-04-01), Akasaki et al.
patent: 5028505 (1991-07-01), Akasaki et al.
"A New High-Sensitivity Organic Photoconductor for Electrophotography", by R. M. Schaffert, Organic Photoconductor Research and Development, pp. 75-89, Jan. 1971.
J. Org. Chem. 26:3988-3991 (1961).
Daiyuki Kagaku (partial translation, Organic Chemistry), 14:270-277 (1974).

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