Electrophotographic image forming method, electrophotographic image forming apparatus and electrophotographic image forming process unit
US6453138B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 30, 2001 |
| Grant date | Sep 17, 2002 |
| Priority date | — |
| Expiry date | Aug 30, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G13/09
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An electrophotographic image forming method includes a charging step, an exposure step, a developing step and a transfer step in the rotation of an electrostatic latent image bearing member, in which a process speed of the electrostatic latent image bearing member is 200 to 500 mm/sec, an outer diameter of the electrostatic latent image bearing member is 15 to 35 mm, an outer diameter of a developer bearing member is 10 to 25 mm, and a magnetic single component developer of which the residual magnetization in a measured magnetic field of 796 kA/m is 0.5 to 5.0 Am2/kg is used as the developer. The electrophotographic image forming method can provide a good image quality without causing scattering of toner in downsizing, weight reduction of an electrophotographic apparatus and speed-up of an electrophotographic process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.