Head engagement mechanism for thermal recording apparatus

Details Head engagement mechanism for thermal recording apparatus Head engagement mechanism for thermal recording apparatus

1990-01-12

1991-12-10

Wiecking, David A.

Typewriting machines

Typing by other than type-face or type-die

Thermal

346 76PH, B41J 2315

Patent

active

050712667

ABSTRACT:
A head driving mechanism for driving a recording head for a recording apparatus, includes a cylindrical head slide shaft, a head carriage formed with a circular bore so as to be slidably and rotatably fitted, at the circular bore, around the head slide shaft. A prismatic cam shaft which is engageable with the head carriage is also provided for rotating the head carriage, and an elastic member and a solenoid are provided for urging the cam shaft in opposite directions. Upon energization of the solenoid, the cam shaft is rotated in a direction such that the recording head is selectively depressed against a platen by a driving force of the solenoid and upon de-energization of the solenoid the cam shaft is rotated by an urging force of the elastic member such that the recording head is disengaged from the platen.

REFERENCES:
patent: 3935936 (1976-02-01), Wilczewski
patent: 4563692 (1986-01-01), Negita et al.
patent: 4575733 (1986-03-01), Hattori et al.
patent: 4595936 (1986-06-01), Nakajima et al.
patent: 4609299 (1986-09-01), Hattori et al.
patent: 4611936 (1986-09-01), Yasui

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