Method and apparatus for image forming capable of performing an improved circulation of developer
US6081684A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 16, 1999 |
| Grant date | Jun 27, 2000 |
| Priority date | — |
| Expiry date | Mar 16, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/0921
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An image forming method for improving developer recirculation capability within a developer unit includes the steps of magnetically adsorbing a developer having magnetism onto a developer carrier by the action of a magnetic field generated by a magnetic field generating member to form a magnetic lobe, regulating the amount of developer in the magnetic lobe in accompaniment with rotation of the developer carrier about a longitudinal central axis by a developer regulating member disposed in a developer carrier rotating angular region extending from a position of a normal magnetic flux density inflection point, at which a component of the magnetic field normal to the developer carrier becomes zero, to a position of a normal magnetic flux density peak, at which the component of the magnetic field normal to the developer carrier exhibits a maximum value, in a direction in which the developer carrier is rotated, and developing a latent image on an image carrier using the magnetic lobe having a regulated amount of developer, wherein the magnetic field is generated such that a position of a tangential magnetic flux density peak, at which a component of the magnetic field tangential to the …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.