Liquid electrostatic developer containing multiblock polymers
US4957844A · kind A · utility
12Cited by
4References
61Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 31, 1989 |
| Grant date | Sep 18, 1990 |
| Priority date | — |
| Expiry date | Mar 31, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G9/131
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Liquid electrostatic developer consisting essentially of PA0 A. nonpolar liquid having Kauri-butanol value less than 30, present in major amount, PA0 B. thermoplastic resin particles, average by area particle size less than 10 .mu.m, consisting essentially of mixture (1) 80-95% by weight thermoplastic resin and (2) 20 to 5% by weight multiblock copolymer compound as defined, and PA0 C. charge director compound. The process of preparation is also defined. The said developer is useful in copying, making proofs, including digital color proofs, lithographic printing plates, and resists.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.