Dot printer having concentric driving cams

Details Dot printer having concentric driving cams Dot printer having concentric driving cams

1979-01-25

1981-03-31

Sewell, Paul T.

Typewriting machines

Typing by other than type-face or type-die

Character formation by impact

4002161, 400320, 4003141, 400328, 400572, 400185, B41J 312, B41J 3510, B41J 1930, B41J 1984

Patent

active

042590264

ABSTRACT:
In a miniature printer for printing with dots on printing paper, concentrically mounted driving cams provide both horizontal and vertical motions which synchronize the reciprocating action of the printing head mechanism with the paper feed and ink ribbon feed mechanism. Constant velocity linear motion is provided for the print head. The printing paper may be removed in either direction from the printer.

REFERENCES:
patent: 1929259 (1933-10-01), Rich
patent: 3885661 (1975-05-01), Okabe
patent: 3929215 (1975-12-01), Hayakawa
patent: 3986594 (1976-10-01), Kondur
patent: 4046246 (1977-09-01), Kondur
patent: 4175876 (1979-11-01), Hanaoka

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