Electrostatic developer material
US4126566A · kind A · utility
3Cited by
2References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 25, 1975 |
| Grant date | Nov 21, 1978 |
| Priority date | — |
| Expiry date | Feb 25, 1995 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/30
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An electrostatographic developer mixture comprising finely-divided toner particles electrostatically clinging to the surface of large carrier particles, each of the carrier particles comprising a core material surrounded by a matrix material containing solid, finely-divided particles having an average diameter less than about 10 microns wherein the solid, finely-divided particles comprise at least one compound selected from the group consisting of phthalic acid, isophthalic acid, terephthalic acid, the metal and ammonium salts thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.