Toner and process for producing toner
US6124070A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 21, 1999 |
| Grant date | Sep 26, 2000 |
| Priority date | — |
| Expiry date | Sep 21, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G9/08795
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present invention relates to a toner which forms a high quality image, which is stable in various environments, i.e. under high humidity, or low temperature and low humidity conditions, and has a fine particle diameter as well as a sharp particle size distribution, and to a process for producing the same. The toner contains at least a binder resin and a colorant, and has (i) a number average particle diameter of from 0.5 to 6.0 .mu.m, (ii) the coefficient of variation of number distribution of not more than 20%, and (iii) a methanol-soluble resin component in an amount of 0.01-10% based on the weight of the toner, and the methanol-soluble resin component contains a polymer composition having an organic acid group, and an acid value of from 50 to 600 mgKOH/g.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.