Ink temperature control system for waterless lithographic printi

Details Ink temperature control system for waterless lithographic printi Ink temperature control system for waterless lithographic printi

1992-08-14

1993-12-28

Fisher, J. Reed

Printing

Planographic

Multicolor

101350, B41F 702, B41F 3102

Patent

active

052729710

ABSTRACT:
A temperature regulation system for a lithographic press, usually of the type using a waterless plate, used to control ink temperature at application to a substrate to be printed. The system includes a contactless sensor for sensing ink temperature between the ink distribution system and application to a substrate and for operating a temperature regulation system that controls the temperature of regulatable rolls in the ink path and thus the sensed ink temperature. This regulation system includes a refrigeration circuit, a secondary heater circuit for obtaining hot fluid, a reservoir for cold fluid and a mixing valve. This system is energy efficient, variable and responsive. It has been found that using this system the ink temperature can be very accurately controlled. Usually the system is used with a waterless plate and it has been found that commercially available lithographic inks as well as the special waterless inks can be used.

REFERENCES:
patent: 4879951 (1989-01-01), Yoshida

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