Two-component developer
US5376489A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 17, 1992 |
| Grant date | Dec 27, 1994 |
| Priority date | — |
| Expiry date | Sep 17, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G9/0823
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The developer in accordance with the present invention includes toner, and a carrier having a core material the surface of which is coated with a coating layer made of a polymer, the coating layer having a resistance value sufficient to minimize the counter electric charge remaining in the coating layer, and the toner having any of characteristic values required for preventing a counter electric charge remaining in the coating layer from being increased. The use of the developer of the present invention not only prevents the occurrence of so-called carrier scattering, to thereby prevent blanking, but also produces an image of high quality having a high initial image density.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.