Process cartridge having projected portions and recessed portions provided on surface of charging member and image forming apparatus thereof
US9501032B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 10, 2014 |
| Grant date | Nov 22, 2016 |
| Priority date | — |
| Expiry date | Jul 10, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/0233
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A process cartridge detachably mountable to an image forming apparatus includes: an image bearing member for forming a latent image; a charging member, press-contacted to the image bearing member at a predetermined urging force, for electrically charging the image bearing member by being supplied with a charging bias; a developing device for developing the latent image by supplying a polymerized toner to the image bearing member; and a cleaning blade for removing the polymerized toner deposited on the image bearing member in contact with the image bearing member. The charging member includes: an electroconductive support; one or more elastic layer formed around the electroconductive support; and projected portions and recessed portions provided on a surface of the charging member. The projected portions are elastically deformable in contact with the image bearing member, leaving electrically dischargeable gaps between the recessed portions of the charging member and the image bearing member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.