Thermal printhead balanced spring mount

Details Thermal printhead balanced spring mount Thermal printhead balanced spring mount

1991-05-05

1994-04-19

Wiecking, David A.

Typewriting machines

Typing by other than type-face or type-die

Thermal

346 76PH, B41J 232

Patent

active

053040074

ABSTRACT:
A thermal printhead spring mount is provided, wherein a spring engages a printhead carrier at two points along the width of the carrier, the points being equidistant from the center of the carrier. A cam engages the center of the spring and selectively biases the spring against the carrier. The spring transfers equal force to the two points, creating a balanced carrier. By releasing cam force from the spring, through simple rotation, tension is relieved in the spring.

REFERENCES:
patent: 830239 (1906-09-01), Lingenfelter
patent: 3190632 (1965-06-01), Barenyi
patent: 3490758 (1970-01-01), Foster
patent: 4170422 (1979-10-01), Bilek
patent: 4460170 (1984-07-01), Lundberg et al.
patent: 4517573 (1985-05-01), Yang
patent: 4565461 (1986-01-01), Usui et al.
patent: 4617576 (1986-10-01), Moeller
patent: 4855756 (1989-08-01), Gluck et al.

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