Shifting mechanism for thermal head of a printer

Details Shifting mechanism for thermal head of a printer Shifting mechanism for thermal head of a printer

1989-11-15

1991-05-07

Fuller, Benjamin R.

Recorders

Thermal recording

400120, G01D 1510, B41J 2315

Patent

active

050140736

ABSTRACT:
A printer is provided which includes a thermal head serving first, second, and third operation modes. In the first operation mode, the thermal head is separate from the platen roller so as to allow a new sheet of printing paper to be inserted, from a roll, for example. In the second operation mode, the thermal head is pressed against the platen roller to via the sheet of printing paper to print an image thereon. In the third operation mode, the thermal head contacts with the platen roller, but under only the slight pressure exerted by its own weight to secure the printed paper sheet to cut it into a predetermined size. The provision of the third operation mode wherein little head pressure is exerted on the platen roller also prevents compression set from occurring on the platen roller.

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