Offset lithographic printing process with a water based ink

Printing – Planographic – Processes of lithographic printing

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101491, 106 3173, C09D 1108, B41M 106

Patent

active

057787891

ABSTRACT:
An offset lithographic printing process comprising printing at a relative humidity of 75-90% utilizing a water-based, single fluid, fountain solution free, printing ink containing (a) a macromolecular binder composed of binders soluble in water regardless of the pH of the water; resin rosin salt binders soluble in water at a pH from 7.5 to 10; and aqueous emulsion binders; (b) pigment and; (c) a re-wetting agent.

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patent: 5039339 (1991-08-01), Phan et al.
patent: 5098478 (1992-03-01), Krishnan et al.
patent: 5370906 (1994-12-01), Dankert
patent: 5417749 (1995-05-01), Krishnan et al.
patent: 5462768 (1995-10-01), Adkins et al.
The Printing Ink Manual, Fifth Edition -1993, pp. 571-576.

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