Front and rear printer device with ink impregnated platen

Details Front and rear printer device with ink impregnated platen Front and rear printer device with ink impregnated platen

1985-10-10

1988-07-05

Wiecking, David

Typewriting machines

For typing on reverse surface of record-medium

4002404, 400470, 400649, 400662, B41J 2720

Patent

active

047550716

ABSTRACT:
According to the invention, printing is formed on a front surface of a printing paper by moving a printing ribbon in opposition to a wire of a printing head, and rotating a platen so as to face a solid part disposed in the platen to the wire printing head. On the other hand, the printing is subsequently carried out on a back surface of the printing paper by moving the printing ribbon to its retreating position, and rotating the platen so as to face an ink impregnated porous substances of the platen to the wire printing head.

REFERENCES:
patent: 1836906 (1931-12-01), Degener
patent: 1940364 (1933-12-01), Miller
patent: 2244095 (1941-06-01), Botham et al.
patent: 2703836 (1955-03-01), Mirogue et al.
patent: 2858004 (1958-10-01), Febvre
patent: 4533267 (1985-08-01), Kurachi et al.
patent: 4543001 (1985-09-01), Tanaka et al.
patent: 4556333 (1985-12-01), Stefansson
patent: 4623275 (1986-11-01), Hanyu et al.
"Color Wheel w/Inked Platens", F. R. Humphreys; IBM Tech. Disc. Bull.; vol. 25, No. 4, p. 2193; Sep. 1982.

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