Title:
HIGH-QUALITY COLOR PRINTER
Document Type and Number:
WIPO Patent Application WO1988003669
Kind Code:
A1
Abstract:
A liquid electrostatic dyestuff is set forth consisting essentially of an inert hydrophobic solvent with dye particles dispersed in the solvent, the particles being substantially insoluble in the solvent and being soluble in a hydrophobic polymer surface at a temperatures above a softening temperature thereof, along with a charge control agent which preferentially partitions onto the dye particles. Also disclosed is a method of electrostatic printing which comprises contacting an imaged liquid electrostatic dyestuff as just set forth with the hydrophobic polymer surface of a sheet, the hydrophobic polymer surface having a softening temperature, and heating the polymeric surface to at least the aforementioned softening temperature. Very sharp color images can be produced in this manner. Reproduction of images from a computer memory in full color is a particular feature of the invention.
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Inventors:
GARDINER KENNETH W (US)
SWIDLER RONALD (US)
SWIDLER RONALD (US)
Application Number:
PCT/US1987/002813
Publication Date:
May 19, 1988
Filing Date:
October 28, 1987
Export Citation:
Assignee:
STANFORD RES INST INT (US)
International Classes:
G03G7/00; G03G9/12; G03G13/10; (IPC1-7): G03G9/12; G03G7/00
Foreign References:
| DE2020812A1 | 1971-11-11 | |||
| DE2450500A1 | 1976-05-06 | |||
| DE1422991A1 | 1970-04-16 | |||
| CH568595A5 | 1975-10-31 | |||
| BE745458A | 1970-06-04 |
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