Method of producing gallium phthalocyanine crystal and method of producing electrophotographic photosensitive member using the method of producing gallium phthalocyanine crystal
US9068083B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 29, 2012 |
| Grant date | Jun 30, 2015 |
| Priority date | — |
| Expiry date | Nov 29, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G5/14756
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Provided is a method of producing an electrophotographic photosensitive member having improved sensitivity and capable of outputting an image having less image defects due to a ghost phenomenon not only under a normal-temperature, normal-humidity environment but also under a low-temperature, low-humidity environment as a particularly severe condition. The method of producing a gallium phthalocyanine crystal includes subjecting a gallium phthalocyanine and a specific amine compound, which are added to a solvent, to a milling treatment to perform crystal transformation of the gallium phthalocyanine. In addition, the gallium phthalocyanine crystal is used in the photosensitive layer of the electrophotographic photosensitive member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.