Magnetic toner for developing electrostatic image, image forming process, and process cartridge
US5750302A · kind A · utility
21Cited by
15References
86Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 24, 1997 |
| Grant date | May 12, 1998 |
| Priority date | — |
| Expiry date | Mar 24, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G9/0839
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A magnetic toner for developing an electrostatic image has magnetic toner particles containing at least a binder resin and magnetic iron oxide particles. The magnetic iron oxide particles have been surface-treated with an aliphatic alcohol having carbon atoms of from 12 to 300 on the average. The magnetic toner has a weight average particle diameter of 13.5 .mu.m or smaller, and contains magnetic toner particles with particle diameters of 3.17 .mu.m or smaller in an amount not less than 1% by number as number-based percentage determined from number distribution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.