Process cartridge, image forming apparatus and intermediate transfer belt
US6775494B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 25, 2002 |
| Grant date | Aug 10, 2004 |
| Priority date | — |
| Expiry date | Mar 22, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/0177
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A process cartridge integrally supports therein a cylindrical latent-image-bearing member on which a toner image is formed and an intermediate transfer belt to which the toner image is primarily transferred and from which it is secondarily transported to a transfer medium. To prevent the latent-image-bearing member from being unwantedly triboelectrically charged during transportation, the cartridge satisfies any of requirements that A) the latent-image-bearing member has a surface potential Vt of −200 V≦Vt≦200 V when the intermediate transfer belt and the latent-image-bearing member are rubbed with each other, B) a spacer member is provided between the intermediate transfer belt and the latent-image-bearing member, and the latent-image-bearing member has a surface potential Vt of −200 V≦Vt≦200 V when the former and the latter are rubbed with each other, and C) the cartridge has a device for lowering contact pressure of the intermediate transfer belt against the latent-image-bearing member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.