Additives for liquid electrostatic developers
US5254427A · kind A · utility
13Cited by
30References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 30, 1991 |
| Grant date | Oct 19, 1993 |
| Priority date | — |
| Expiry date | Dec 30, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G9/133
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A liquid developer is prepared from a liquid electrostatic developer concentrate comprising up to 80% toner solids and a surfactant. The liquid electrostatic developer concentrate may be prepared by preparing a liquid electrostatic developer containing up to 20% toner solids; subsequently adding a surfactant to the liquid electrostatic developer; and concentrating the liquid electrostatic developer. The surfactant permits the easy redispersion of the toner solids at the time of use.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.