Electric charge controlling agent, toner for developing electrostatic charge image containing the same, and method for forming image using the toner
US7479360B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 25, 2003 |
| Grant date | Jan 20, 2009 |
| Priority date | — |
| Expiry date | Oct 7, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G9/091
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The charge control agent comprises aggregate particles including an azo-type iron complex salt represented by the following chemical formula [VI](in the chemical formula [VI], B+ is (H+)x(Na+) 1−x and x is mole ratio and 0.6 to 0.9, or B+ is (H+)y(Na+)1−y and y is mole ratio and 0 to 0.2) and the aggregate particles have 0.5 to 5.0 microns of an average particle size. A toner for developing an electrostatic image comprises a resin for the toner and the charge control agent. An image formation process of electrophotography comprises a step for developing an electrostatic latent image on an electrostatic latent image frame by a developer including the toner.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.