Electrophotographic elements with polyester binder resins having aprotic end groups
US4407921A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 10, 1981 |
| Grant date | Oct 4, 1983 |
| Priority date | — |
| Expiry date | Nov 10, 2001 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G5/06
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Disclosed are electrophotographic elements comprising a support having coated thereon a photoconductive composition comprising a photoconductor dispersed in a linear film-forming polyester resin having its terminal hydroxyl and carboxyl groups endblocked with aprotic groups. The aprotic groups reduce hydrogen bonding within the resin matrix, and enhance the flowability of the resin when heated. Electrophotographic elements utilizing polyester resin binders endblocked in accordance with the present invention possess improved fusibility as compared with similar electrophotographic elements containing equivalent but protic endblocked polyester matrices, and as a result can be readily developed by flash fusing. In addition, such electrophotographic elements containing polyester resin binders endblocked in accordance with the instant invention possess improved photographic speed, and often improved dark decay properties, as compared with electrophotographic elements containing protic endblocked polyester matrices.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.