Aromatic nitrogen-containing compounds as adjuvants for electrostatic liquid developers
US5009980A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 30, 1988 |
| Grant date | Apr 23, 1991 |
| Priority date | — |
| Expiry date | Dec 30, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G9/135
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A liquid electrostatic developer consisting essentially of PA1 (A) a nonpolar liquid having a Kauri-butanol value of less than 30 present in a major amount, PA1 (B) thermoplastic resin particles having dispersed therein an aromatic nitrogen-containing compound which is substantially insoluble or immiscible in the nonpolar liquid at ambient temperatures as defined herein, the resin particles having an average by area particle size of less than 10 .mu.m, and PA1 (C) a nonpolr liquid soluble ionic or zwitterionic charge director compound, and process for preparation. The developer is useful in copying and color proofing including digital color proofing, lithographic printing plates and resists.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.