Rotary printer and ink therefor, whereby the ink properties are chosen such that its tackiness varies linearly over a given temperature range or over a given print production speed

摘要

Rotary print machine has a print mechanism with which print ink can be applied to a print medium. The dependence between the print ink ease of flow or elasticity and temperature is at most 0.6 tack dividedegrees C in the temperature range between 22 and 50 degrees C. Alternately in a production speed range between 3 and 16 mdivides the ink elasticity varies by at most 1.5 tack sdividem. Independent claims are also included for the following:- (a) A rotary print machine that uses ink of specific tackiness; (b) a print ink whose tackiness varies in a given way over a given temperature range or production speed; (c) and use of print ink of a given tack in a rotary printer or in non-aqueous offset printing.