Developer with surface treated silicic acid for developing electrostatic image
US5202213A · kind A · utility
74Cited by
10References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 21, 1992 |
| Grant date | Apr 13, 1993 |
| Priority date | — |
| Expiry date | Jan 21, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G9/09725
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A developer for developing electrostatic latent images, comprising a mixture of toner and fine powder of silicic acid wherein the mixture has a ratio of B/A of 0.9 or larger provided that the mixture contains A wt. % thereof of the silicic acid fine powder, and contains B wt. % thereof of the silicic acid fine powder after the mixture has been passed through a 200 mesh-sieve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.