Electrically-conductive overcoat layer for photographic elements
US5955250A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 16, 1997 |
| Grant date | Sep 21, 1999 |
| Priority date | — |
| Expiry date | Dec 16, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C1/853
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present invention is a multilayer imaging element which includes a support, one or more image-forming layers superposed on the support, and an outermost transparent electrically-conductive, non-charging, overcoat layer superposed on the support. The over coat layer is colloidal, acicular electrically-conductive metal-containing particles, dispersed in a film-forming binder at a volume percentage of acicular conductive metal-containing particles of from 2 to 60. The overcoat layer further includes a first charge control agent which imparts positive charging properties and a second charge control agent which imparts negative charging properties.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.