Printing device

Details Printing device Printing device

1978-07-05

1981-06-02

Coven, Edward M.

Printing

Selective or progressive

Bed and platen machines

101 9322, B41J 144

Patent

active

042704480

ABSTRACT:
In a printing device including rotatable character wheels having type characters on the surface thereof and a selection mechanism for selectively bringing a character to a printing position, a drive means is provided for moving the selection mechanism. Coupling between the drive means and the selection mechanism is effected by an electro-magnet, size and power requirements for the electro-magnet being reduced by the fact that the electro-magnet functions only as a coupling means and not as the drive means itself.

REFERENCES:
patent: 3169474 (1965-02-01), Howard
patent: 3477365 (1969-11-01), Nyman
patent: 3735698 (1973-05-01), Lenders et al.
patent: 3884144 (1975-05-01), Shimodairn
patent: 3929067 (1975-12-01), Nishikawa et al.
patent: 3969998 (1976-07-01), Venker
patent: 4033256 (1977-07-01), Hanaoka
patent: 4111117 (1978-09-01), Tezuka et al.
patent: 4152982 (1979-05-01), Mikoshiba et al.

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