Photoelectrophoretic imaging process employing a dark charge injecting agent - alkyd resin coating
US3967961A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 4, 1974 |
| Grant date | Jul 6, 1976 |
| Priority date | — |
| Expiry date | Dec 4, 1994 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G17/04
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An improved photoelectrophoretic imaging method is disclosed wherein a blocking layer is provided with a coating which interacts, in the dark, with the pigment particles of the imaging suspension so as to provide a uniformly charged imaging suspension upon exposure of the suspension to an electric field. The coating comprises a dark charge injecting agent dispersed in an electrically insulating, alkyd resins derived from dibasic acids and polyhydric alcohols. Subsequent exposure to electromagnetic radiation to which at least some of the particles are sensitive then results in the formation of optically positive and negative images.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.