Image forming apparatus
US7693454B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 13, 2007 |
| Grant date | Apr 6, 2010 |
| Priority date | — |
| Expiry date | Apr 28, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G5/144
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Disclosed is an image forming apparatus composed of a combination of multi-layered electrophotographic photoreceptor wherein an undercoat layer is made of at least fine titanium oxide particles and a binder resin and has a thickness of 3 μm or less and the fine titanium oxide particles are surface treated with alumina and silica and have a number average primary particle size of 20 nm or less, and exposing means by LED exposure. Thus, an electrophotographic photoreceptor having good balance between dispersibility of titanium oxide and electrical insulation properties is obtained and image fog does not occur under high temperature and high humidity environment and also excellent image quality can be maintained during continuous printing under low temperature and low humidity environment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.