Photosensitive member for electrophotography containing trisazo

Details Photosensitive member for electrophotography containing trisazo Photosensitive member for electrophotography containing trisazo

1987-07-14

1989-03-07

Goodrow, John L.

Radiation imagery chemistry: process, composition, or product th

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

Radiation-sensitive composition or product

430 76, 430 78, G03G 506

Patent

active

048106070

ABSTRACT:
A photosensitive member for electrophotography comprises a photosensitive layer containing a trisazo pigment represented by the formula: ##STR1## wherein Ar.sub.1 is a pyridylene group capable of having a substituent; Ar.sub.2 and Ar.sub.3 are respectively a pyridylene group or an arylene group each capable of having a substituent; and A is a coupler residue having a phenolic OH group. Because the trisazo pigment has a characteristic central skeleton including the central nitrogen atom and an adjacent pyridylene group, the photosensitive member has a sensitivity region expanded to the near-infrared region and shows a stable charging characteristic during a continuous electrophotographic operation.

REFERENCES:
patent: 4612271 (1986-09-01), Makino et al.
patent: 4666810 (1987-05-01), Umehara et al.

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