Photosensitive material for electrophotography and method for making same
US4985330A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 7, 1989 |
| Grant date | Jan 15, 1991 |
| Priority date | — |
| Expiry date | Nov 7, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G5/047
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A photosensitive material for electrophotography which comprises an electrically conductive support of a desired shape and an organic photoconductive layer formed on the substrate, is provided. The organic photoconductive layer is formed from a solution of an organic charge-generating compound, an organic charge transfer compound and an organic resin in an organic solvent after low temperature treatment thereof wherein the solution is cooled to a temperature sufficient not to cause the solutes to be precipitated or the solution to be coagulated for a time enough to allow interaction between the compounds and the resin binder and is returned to room temperature. This solution is applied to the support and dried to form a photoconductive layer on the support. The photoconductive layer may be of a single-layer structure or a double-layered structure wherein at least one sub-layer should be formed from a solution subjected to the low temperature treatment. A process for making the photosensitive material is also described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.