Electrophotographic photoreceptor, image forming apparatus and process cartridge
US8685600B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 23, 2009 |
| Grant date | Apr 1, 2014 |
| Priority date | — |
| Expiry date | Mar 11, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G5/14769
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
There is provided an electrophotographic photoreceptor including a conductive substrate; an intermediate layer; a photosensitive layer; and a surface layer, in this order, the surface layer including two or more charge transporting materials each including a reactive substituent and respectively having mutually different ionization potentials, in an amount of 90% by weight or more relative to the total solid content of the surface layer, and the content ratio X of each of the two or more charge transporting materials satisfying the following Formula (1). X(n) represents a content ratio (weight %) of a charge transporting material that has the nth highest ionization potential among the two or more charge transporting materials; X(n−1) represents a content ratio (weight %) of a charge transporting material that has the (n−1)th highest ionization potential among the two or more charge transporting materials; and n is an integer of two or more and represents a variable equal to or lower than the number of charge transporting materials contained in the surface layer.X(n−1)≧X(n) Formula (1).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.