Developing method for an image forming apparatus and developing device using the same
US7139517B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 12, 2005 |
| Grant date | Nov 21, 2006 |
| Priority date | — |
| Expiry date | Jul 12, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G13/09
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A developing method of the present invention develops a latent image formed on an image carrier with a two-ingredient type developer, which consists of toner grains and carrier grains retaining the toner grains thereon, deposited on a developer carrier in the form of brush chains. Assume that the brush chains on the developer carrier has a height of h as measured at a zero field point where the magnetic field formed by a main magnet is zero, and that a gap for development that is the shortest distance between the developer carrier and the image carrier is a, then a and h are equal to each other. Image quality is estimated by varying the combination of an angle θ between the gap and the zero field point, the outside diameter of the image carrier and the outside diameter of the developer carrier and the height h. A desirable or an optimum range of the results of estimation are selected to set various conditions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.