Laser-sensitive electrophotographic material
US4879195A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 16, 1988 |
| Grant date | Nov 7, 1989 |
| Priority date | — |
| Expiry date | Dec 16, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G5/067
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An electrophotographic material having an enhanced sensitivity to laser rays comprises, PA0 (A) an electroconductive substrate, and PA0 (B) a laser-sensitive electrophotographic layer comprising (a) a finely divided photoconductive zinc oxide, (b) a resinous binder, (c) a sensitizing coloring material comprising at least one member selected from the compounds of the formulae (I) and (II): ##STR1## in which m.sup.1, m.sup.2, n.sup.1 and n.sup.2 are 1 to 8, R.sup.1 and R.sup.2 are --COO or --SO.sub.3, R.sup.3 and R.sup.4 are H, --CH.dbd.CH.sub.2 --COOH, --SO.sub.3 H, --COONa, --SO.sub.3 Na, COOK or --SO.sub.3 K, X is Cl, Br, I or --ClO.sub.4, ##STR2## and, (d) a sensitizing assistant comprising at least one carboxylic anhydride of the formula (III): ##STR3## wherein R.sup.5 and R.sup.6 are H, C.sub.1-8 alkyl or phenyl.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.