Carbohydrate products of photosynthesis as charging adjuvant for positive liquid electrostatic developers
US5077171A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 13, 1990 |
| Grant date | Dec 31, 1991 |
| Priority date | — |
| Expiry date | Dec 13, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G9/135
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An electrostatic liquid developer having positive charging characteristics consisting essentially of: PA0 (A) a non-polar liquid having a Kauri-butanol value of less than 30, present in a major amount, PA0 (B) thermoplastic resin particles having an average by area particle size of less than 10 .mu.m, PA0 (C) a nonpolar liquid soluble ionic or zwitterionic charge director compound, and PA0 (D) a carbohydrate product of photosynthesis comprised of at least one saccharose present in (A) and/or dispersed in (B). The liquid developer is useful in copying, color proofing, digital color proofing, making lithographic printing plates, and resists.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.