Electronic typewriter with a detector switch

Details Electronic typewriter with a detector switch Electronic typewriter with a detector switch

1987-03-17

1989-01-17

Wiecking, David A.

Typewriting machines

Safety switch or condition-responsive-cutoff switch for...

400184, 400668, 4006904, 400703, B41J 2938

Patent

active

047984856

ABSTRACT:
An electronic typewriter having a single detector switch for detecting whether a lid over a printing mechanism is open or closed and whether a carriage is in the original position or not. The detector switch is stimulated by two stimulators; one being provided on the lid for stimulating the detector switch when the lid is closed, and the other being provided on the carriage for stimulating the detector switch when the carriage is at the original position.

REFERENCES:
patent: 4340315 (1982-07-01), Teichmann et al.
patent: 4357116 (1982-11-01), Oguchi
patent: 4403879 (1983-09-01), Vought et al.
patent: 4557615 (1985-12-01), Ueno
IBM Tech. Disc. Bulletin, "Print-Carrier Crash Protection", Barrow, vol. 19, No. 9, Feb. 1977, p. 3976.
IBM Tech. Disc. Bulletin, "Cover Section for Paper Opening of a Printer", Mott, vol. 24, No. 8, Jan. 1982, p. 4348.
IBM Tech. Disc. Bulletin, "Single Sensor for Carrier Homing and Print Wheel Identification", Quinn, vol. 25, No. 11A, Apr. 1983, pp. 5818-5819.

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