Electrophotographic material with pyrimido-pyridobenzimidazole c

Details Electrophotographic material with pyrimido-pyridobenzimidazole c Electrophotographic material with pyrimido-pyridobenzimidazole c

1986-01-24

1987-05-19

Martin, Roland E.

Radiation imagery chemistry: process, composition, or product th

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

Radiation-sensitive composition or product

430 76, 430 77, 430 83, G03G 506, G03G 509

Patent

active

046668128

ABSTRACT:
The photoconductor of an electrophotographic recording material comprising an electrically conductive support, an optional insulating interlayer, and a photoconductive single layer containing a binder, a dye or pigment sensitizer and a pyrimido[5',4':5,6]pyrido[1,2-a]benzimidazole charge transporting compound represented by the formula ##STR1## wherein R.sub.1 and R.sub.2 are identical or different and are hydrogen or an R.sub.3,R.sub.4 N group; R.sub.3 and R.sub.4 are identical or different and are (C.sub.1 to C.sub.4)-alkyl, hydroxy-(C.sub.1 to C.sub.4)-alkyl, phenyl or benzyl which are unsubstituted or (C.sub.1 to C.sub.4)-alkyl-substituted, or, together with the N atom to which they are bonded, are an imidazolyl or triazolyl group; and R.sub.5 is a benzothiazole, a benzoxazole or a benzimidazole group, is photosensitive in the visible range around 430 to 500 nm and can be sensitized for the longer-wavelength region with dyes.

REFERENCES:
patent: 3870516 (1975-03-01), Smith et al.
patent: 3973959 (1976-08-01), Rochlitz et al.
patent: 3992205 (1976-11-01), Wiedemann
patent: 4153461 (1979-05-01), Berghaeuser et al.

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