Classified toner materials
US4122024A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 30, 1974 |
| Grant date | Oct 24, 1978 |
| Priority date | — |
| Expiry date | May 30, 1994 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G9/10
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Classified toner materials having a particle size number distribution with a fine index ratio of less than about 2.50, a particle size volume distribution with a coarse index ratio less than about 1.50, and a particle size distribution wherein less than about 30.0 percent by number of the toner particles have an average particle size diameter of less than about 5 microns, about 25 percnt of the particles have a diameter between about 8 microns and about 12 microns and less than about 5 percent by number of the toner particles have an average particle diameter greater than about 20 microns. The toner materials may be mixed with carrier materials to form electrostatographic developer mixtures.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.