Magnetic particles used for electrostatic latent image developer and process for producing the same
US5118587A · kind A · utility
5Cited by
6References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 18, 1990 |
| Grant date | Jun 2, 1992 |
| Priority date | — |
| Expiry date | Jul 18, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S430/104
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Disclosed herein are magnetic particles used for an electrostatic latent image developer comprising composite particles containing from more than 80% by weight to not more than 99% by weight of fine ferromagnetic particles and a cured phenol resin, and having a number-average particle diameter of from not less than 1 .mu.m to less than 10 .mu.m and an apparent density of not greater than 1.5 g/cm.sup.3.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.