Method and apparatus for serial dot printing

Details Method and apparatus for serial dot printing Method and apparatus for serial dot printing

1981-08-17

1984-02-14

Sewell, Paul T.

Typewriting machines

Typing by other than type-face or type-die

Character formation by impact

101 9305, B41J 312

Patent

active

044313195

ABSTRACT:
A serial dot printer provides a high quality printed product by printing on demand the same alphanumeric characters and symbols twice with a vertical distance between the first and second printing corresponding to half of the vertical pitch distance of the dots in the first printing. Normal line spacing is provided for both single and double printing.

REFERENCES:
patent: 3759359 (1973-09-01), Stellmach
patent: 3900094 (1975-08-01), Larsen
patent: 3931761 (1976-01-01), Carrus et al.
patent: 4086997 (1978-05-01), Wu
patent: 4159882 (1979-07-01), Sanders et al.
patent: 4204090 (1980-05-01), Heinzl
patent: 4242003 (1980-12-01), Ragen
patent: 4256408 (1981-03-01), Shelton
patent: 4284363 (1981-08-01), Choberka
J. E. Lisinski and D. K. Rex, Print Head Dipper, IBM Technical Disclosure Bulletin, vol. 20, No. 12 (May 1978).

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