Electrostatic printing inks
US3954640A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 27, 1973 |
| Grant date | May 4, 1976 |
| Priority date | — |
| Expiry date | Jun 27, 1993 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G9/131
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Liquid developer compositions for development of latent electrostatic images are disclosed. The electrostatic printing inks dry at ambient temperatures by penetration into paper leaving a continuous film having excellent rub resistance on the surface. The non-volatile, low viscosity inks comprise about 3-20% pigment and/or dye, about 5-35% of resinous particles having a size of 5 microns or less and having glass transition temperatures close to or below ambient temperature, said resinous particles being dispersed in the liquid carrier, 0-25% dispersing agent and about 25-90% non-volatile, high boiling organic liquid carrier and/or solvent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.