Locally deformable photosensitive drum for use in electrophotography
US4601963A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 16, 1984 |
| Grant date | Jul 22, 1986 |
| Priority date | — |
| Expiry date | Apr 16, 2004 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/751
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A photosensitive drum includes a cylindrical core which may be fixedly mounted on a rotating shaft and which is comprised of an elastic material and an outer sleeve which is provided on the outer peripheral surface of the core and which includes a supporting layer and a photosensitive layer formed on the supporting layer. A combination of the elastic core and the outer sleeve is constructed such that the drum only deforms locally at a point where an external force is applied and its immediate vicinity while maintaining the other portion virtually unchanged. In one form, the outer sleeve is fixedly mounted on the core, and, in another form, the outer sleeve is detachably mounted on the core. In the latter case, it is so structured that no relative movement takes place between the core and the outer sleeve even if external forces are applied to the drum.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.