Automatic print head position adjusting mechanism

Details Automatic print head position adjusting mechanism Automatic print head position adjusting mechanism

1990-05-15

1992-08-04

Crowder, Clifford D.

Typewriting machines

Including adjustment for optimum printing plane

In accordance with the number of sheets of record-medium

400 59, B41J 363

Patent

active

051353164

ABSTRACT:
An apparatus adapted to adjust an interval or gap between a print head carried by a carrier unit and a printing paper disposed on a platen by sensing a paper thickness to obtain the optimum position of the print head without stepping-out a motor, including a holder, pulley, shielding plate, and a cam to rotate not only the holder and pulley with respect to the cam, but also the shielding plate with respect to the pulley independently of each other against the cam at a predetermined angle so that characters of a high quality may be printed on the printing paper.

REFERENCES:
patent: 3981235 (1976-09-01), Thomas et al.
patent: 4420269 (1983-12-01), Ackermann et al.
patent: 4652153 (1987-03-01), Kotsuzumi
patent: 4676675 (1987-06-01), Suzuki
patent: 4893949 (1990-01-01), Limberger et al.
patent: 4927277 (1990-05-01), Niikawa
patent: 4990004 (1991-02-01), Kawahara et al.
patent: 5051008 (1991-09-01), Honda et al.

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