Developing device and process cartridge for an image forming apparatus
US7171145B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 8, 2006 |
| Grant date | Jan 30, 2007 |
| Priority date | — |
| Expiry date | Feb 8, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/0634
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A method of developing a latent image formed on an image carrier with toner, including causing a developer carrier, which faces the image carrier and accommodates a magnet therein, to support a developer having a toner and a magnetic carrier supporting the toner and convey the developer to a developing zone between the developer carrier and the image carrier, and providing an apparent coating ratio M of a surface of the developer carrier coated with the developer. The coating ration M is, in a zone upstream of the developing zone in a direction of rotation of the developer carrier, expressed as M=αA2+β (%), where α denotes a coefficient of the coating ratio, A2 denotes an amount of developer for a unit area, β denotes a value determined by a powder characteristic of the developer for an apparent coating ratio calculated with A2=0, and the coating ratio M is between 90% and 120%.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.