Typewriting machines – Typing by other than type-face or type-die – Thermal
Patent
1986-03-21
1987-08-11
Eickholt, E. H.
Typewriting machines
Typing by other than type-face or type-die
Thermal
4001251, 400 54, 400 55, 400644, 271900, B41J 302, B41J 1310
Patent
active
046858156
ABSTRACT:
A printing apparatus including a feed path for print medium to be imprinted. A printing station defined by a printhead that is biased towards abutting contact with a platen roller. A floating mount pivotally mounts the printhead with respect to the platen roller so that a uniform contact pressure is established between the printhead and print medium during printing. The printhead is also mounted for pivotal movement about an axis transverse to the first axis which allows the printhead to move towards and away from the platen roller to facilitate loading of the print medium. A printhead sensor monitors the position of the head and automatically deactivates the printhead when it is about to be, or is separated, from the platen roller. A stripper mechanism is provided for automatically stripping a backing from the print medium and includes a stripper assist bar that causes the backing to follow, and frictionally engage, a peripheral region on the platen roller that is at least 90.degree.. This frictional engagement provides the force needed to pull backing from a label, eliminating the need for separate gripper rollers. A detented adjustable guide is also provided to facilitate changing sizes of the print medium.
REFERENCES:
patent: 3918702 (1975-11-01), Mihalik
patent: 3948507 (1976-04-01), Stange
patent: 4169682 (1979-10-01), Norman
patent: 4235555 (1980-11-01), Aprato
patent: 4244648 (1981-01-01), Schultes et al.
patent: 4364657 (1982-12-01), Landa
patent: 4514100 (1985-04-01), Laspesa
patent: 4525084 (1985-06-01), Ikeda
patent: 4560292 (1985-12-01), Takahashi
"Web Media Roll Take-Up Clamp" IBM Tech. Discl. Bulletin, vol. 20, No. 10, Mar. 1978, pp. 4041-4042.
"Roll Paper Attachment and Tear Bar for Wire Matrix Printer" IBM Tech. Discl. Bulletin, vol. 22, No. 10, Mar. 1980, p. 4360.
Eaton Corporation
Eickholt E. H.
Rowe D. A.
Union M. L.
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