Negative charge control agents and their preparation
US8361689B2 · kind B2 · utility
0Cited by
9References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 5, 2007 |
| Grant date | Jan 29, 2013 |
| Priority date | — |
| Expiry date | Jan 22, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G9/08795
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present invention provides an electrostatographic toner that hasa condensation polymer binder having carboxylic acid end groups and an acid number of 4 or greater. The carboxylic end groups are converted to metal salts having the structure;(—COO−1)nM+n where M is selected from groups IB, IIB, IIIB, IVB, VB, or IA, IIA, IIIA, IVA, VA, VIA, VIIA and VIIIA of the periodic table and n is an integer from 1-4. The present invention also provides a developer of carrier particles and the electrostatographic toner.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.