| abstract |
PURPOSE: To obtain an electrophotographic sensitive material having photoconductivity only to lights in the IR region, prevented from background stains, and enhanced in sensitivity and resolution by incorporating polyvinylcarbazole or its deriv. together with a specified cyanine dye as a sensitizing dye. n CONSTITUTION: A photosensitive body having high sensitivity to light in the IR region and a colorless photoconductive layer is obtained by forming on a conductive substrate made of a transparent film the photoconduct layer contg. polyvinylcarbazole or its deriv. together with a sensitizing dye represented by formula I in which Y is S or a group of formula II; Y' is S or a group of formula III; R 2 , R 3 , R' 2 , R' 3 are each alkyl, R 2 and R 3 , R' 2 and R' 3 are each may form a ring; Z, Z' are each halogen, NO 2 , CN, or alkylsulfonyl; R 1 , R' 1 are each optionally substd. alkyl; A is -CH=CH-CH=, a group of formula IV or V; D is halogen or a group of formula VI; R 4 , R 5 are each optionally substd. alkyl or phenyl; n1, n2 are each 0 or n1+n2≥2; and X - is an anion. n COPYRIGHT: (C)1984,JPO&Japio |