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1. (WO1998013205) COMPUTER ACTIVATED DIAZO PRINTING SYSTEM AND METHOD

Pub. No.:    WO/1998/013205    International Application No.:    PCT/US1996/015236
Publication Date: Apr 2, 1998 International Filing Date: Sep 24, 1996
IPC: B41J 2/01
B41J 3/407
G03C 1/52
Applicants: PRECISION COATINGS, INC.
Inventors: SWEET, Norman
RICH, Patrick
FOLCIK, Richard
Title: COMPUTER ACTIVATED DIAZO PRINTING SYSTEM AND METHOD
Abstract:
A system (10) of and method for printing diazo images with a computer printer or plotter. The cartridge (14) of the ink jet printer (12) or plotter is filled with an ink (16) or a transfer film ribbon is impregnated therewith which contains a first diazo imaging substance (such as a combination of diazo salts, a coupler, and acid, or an ammonium hydroxide solution, or diazo salts, alone or coupler alone). A substrate (18) coated with a second diazo imaging substance (selected so that it reacts with the first diazo imaging substance to produce a visible image) is provided. The printer or plotter is then used to imprint an image onto the coated substrate. The reaction between the two diazo imaging substances produces a visible, diazo image. The invention is particularly useful to produce intermediate screens and masks in a computerized graphic art production environment, as well as outdoor signage.