AB diblock copolymers as toner particle dispersants for electrostatic liquid developers
US5106717A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 2, 1990 |
| Grant date | Apr 21, 1992 |
| Priority date | — |
| Expiry date | May 2, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G9/12
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Electrostatic liquid 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 an average by area particle size of less than 10 .mu.m, and coated with (C), PA1 (C) an AB diblock copolymer toner particle dispersant as defined, and PA1 (D) a nonpolar liquid soluble ionic or zwitterionic compound. Optionally a colorant and charge adjuvant are present. The process of making the electrostatic liquid developer is described. The electrostatic liquid 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.