Electrophotographic material with mxiture of charge transport ma

Details Electrophotographic material with mxiture of charge transport ma Electrophotographic material with mxiture of charge transport ma

1986-04-14

1988-05-10

Martin, Roland E.

Radiation imagery chemistry: process, composition, or product th

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

Radiation-sensitive composition or product

430 49, 430 59, 430 96, G03G 509, G03G 514, G03G 506

Patent

active

047435216

ABSTRACT:
An electrophotographic recording material contains, as charge carrier-transporting compounds in the photoconductor layer, a mixture of one or more compounds of the formula ##STR1## and one or more compounds of the formula ##STR2## in a ratio of from 9:1 to 0.6:1, preferably from 2.3:1 to 0.8:1. In the formulae, R.sup.1 and R.sup.2 independently of one another are each alkyl, allyl, phenylalkyl or unsubstituted or substituted phenyl, R.sup.3 and R.sup.4 independently of one another are each hydrogen, alkyl, alkoxy or halogen, and R.sup.6, R.sup.7, R.sup.8 and R.sup.9 independently of one another are each alkyl, phenylalkyl or cyclohexyl.
When the mixture of (I) and (II) is present in an appropriate concentration, the recording materials are highly photosensitive, although the problems usually encounted in the case of high concentrations of charge carrier-transporting compounds do not arise.

REFERENCES:
patent: 3140174 (1964-07-01), Clark
patent: 4456672 (1984-06-01), Lingsfeld et al.
Phys. Rev. Lett., 37 (1976), pp. 1360-1363.

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