Positively chargeable electrophotographic photosensitive member and image forming apparatus
US9213229B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 30, 2014 |
| Grant date | Dec 15, 2015 |
| Priority date | — |
| Expiry date | Feb 23, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G5/0542
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A positively chargeable electrophotographic photosensitive member has a photosensitive layer. The photosensitive layer at least includes the following layers layered in the stated order: (I) a charge transport layer at least containing a hole transport material and a binder resin; and (II) a charge generating-and-transporting layer at least containing a charge generating material, an electron transport material, a hole transport material, and a binder resin all within this layer. The binder resin contained in the charge transport layer is different from the binder resin contained in the charge generating-and-transporting layer, and either of the binder resins contains a polyvinyl acetal resin.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.