Electro photographic photoconductor and color image forming apparatus
US8642236B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 29, 2008 |
| Grant date | Feb 4, 2014 |
| Priority date | — |
| Expiry date | Apr 27, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/00957
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Provided are an electrophotographic photoconductor which shows a small variation in sensitivity and exhibits a high sensitivity even at a small amount of light exposure and a tandem-system color image forming device provided with the electrophotographic photoconductor. A positive charging type electrophotographic photoconductor for use in a tandem-system color image forming device including a drum type electrophotographic photoconductor, a rotation speed of which is (70) rpm or more, and a color image forming device provided with the electrophotographic photoconductor, wherein, when Vb (V) denotes a sensitivity in the case where an amount of light exposure per unit area is 0.6 μJ/cm2 and Va (V) denotes a sensitivity in the case where an amount of light exposure per unit area is 1.5 μJ/cm2, a sensitivity ratio represented by Vb/Va is adjusted to a value of below (2).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.