Magnetic brush developing method
US6083655A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 15, 1999 |
| Grant date | Jul 4, 2000 |
| Priority date | — |
| Expiry date | Jul 15, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/0609
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A developing method including the steps of: stirring a two component-type developer which contains a toner and a carrier; conveying the developer to a developing section with a conveying screw and a developer carrying member; and developing an electrostatic latent image on an image holding member by forming a magnetic brush on a developing magnetic pole, wherein the carrier is a magnetic material dispersion-type resin carrier containing a binder resin and a metal oxide, has a low coercive force and has been previously exposed and magnetized in a specific magnetic field and has stable residual magnetization, thereby imparting a high durability to the developer and making it usable for a long time to reproduce a large number of images having stable qualities.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.