Photoresponsive imaging members with polyurethane blocking layers
US4921769A · kind A · utility
131Cited by
22References
39Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 3, 1988 |
| Grant date | May 1, 1990 |
| Priority date | — |
| Expiry date | Oct 3, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G5/142
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An imaging member comprised of an optional supporting substrate; a ground plane layer; a blocking layer; an optional adhesive layer; a photogenerator layer; and a charge transport layer, wherein the blocking layer is comprised of a polyurethane of the formula: ##STR1## wherein A is a trivalent group; A' is a bivalent group; R is selected from the group consisting of alkylene, substituted alkylene, arylene, and substituted arylene; x and y are number mole fractions the sum of which is equal to 1.0.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.