Negative charging liquid developer for electrophotography
US4837103A · kind A · utility
1Cited by
2References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 12, 1987 |
| Grant date | Jun 6, 1989 |
| Priority date | — |
| Expiry date | Nov 12, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S430/105
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
This invention provides a negative-charging liquid developer for electrostatic photography excellent in charge stability and dispersion stability which comprises a highly insulating carrier liquid in which resin particles containing a charge control agent are dispersed, said charge control agent being a carboxylic acid amine salt which comprises a polycarboxylic acid compound insoluble in said carrier liquid and a high molecular amino compound soluble in said carrier liquid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.