Variable platen pressure control for a thermal transfer printer

Details Variable platen pressure control for a thermal transfer printer Variable platen pressure control for a thermal transfer printer

1996-10-03

1997-09-16

Tran, Huan H.

Incremental printing of symbolic information

Thermal marking apparatus or processes

Platen or engaging means therefor

B41J 1120

Patent

active

056685858

ABSTRACT:
A multi-color thermal transfer printer for printing multi-color license plate images on a web of retroflective sheeting material, the printer having a plurality of printing stations. The printer, at each of the printing stations, has a thermal transfer printing head, a printing ribbon having an ink of a pre-selected color, a pivotally-mounted roller platen assembly for pressing a respective one of the printing ribbons and a web of material to be printed upon, against a respective one of the printing heads at a variably selectable pressure to transfer the ink from the ribbon to the web of material. A cylinder device is provided at each of the stations. Each cylinder device is adjustably pressurized by a fluid medium and engaged with a respective one of the roller platen assemblies for the purpose of applying a variably selectable pressure to the pivotally-mounted roller platen assembly in order to control roller platen pressure.

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