Thermal printhead controlling means

Details Thermal printhead controlling means Thermal printhead controlling means

1987-12-28

1990-08-14

Reynolds, Bruce A.

Recorders

Thermal recording

400120, 400 56, G01D 1510

Patent

active

049490982

ABSTRACT:
In apparatus for thermally transferring ink from a ribbon, having backing and ink donor layers, to a letter, wherein the apparatus includes a frame, a thermal printhead, structure for controlling the printhead, and a roller rotatably connected to the frame for rotation when in engagement with a letter fed between the roller and a ribbon, there is provided an improvement for urging a ribbon and letter into engagement with one another. The improvement includes the printhead controlling structure including structure for disposing the printhead in a non-printing position permitting a ribbon to be located between the printhead and roller and in a printing position wherein the printhead is in engagement with the backing layer of a ribbon, and the printhead controlling structure including structure for resiliently supporting the printhead to urge the ink donor layer of a ribbon into contact with a letter when the printhead is disposed in the printing position.

REFERENCES:
patent: 4170422 (1979-10-01), Bilek
patent: 4739343 (1988-04-01), Dolan
patent: 4739344 (1988-04-01), Sullivan et al.
patent: 4740798 (1988-04-01), Shinoazaki

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