High quality printer

Details High quality printer High quality printer

1980-05-20

1983-02-08

Sewell, Paul T.

Typewriting machines

Typing by other than type-face or type-die

Character formation by impact

101 9305, B41J 312

Patent

active

043726968

ABSTRACT:
A high quality, variable font, matrix printer employs a precise carriage position control system that precisely determines the position of the carriage at discrete positions in combination with a variable time delay in the matrix element firing circuit to permit each printed matrix element to be positioned at one of the various carriage positions, or between discrete carriage positions, thereby permitting essentially continuous horizontal lines and high quality characters of various fonts and sizes to be printed. In such a system, the positions of the elements forming the particular characters to be printed are defined by stored information representative of carriage position and time delay. Essentially continuous vertical lines are generated by precisely controlling the paper feed to permit matrix element overlap, and characters larger than the printing matrix may be generated utilizing multiple printing passes with an appropriate paper advance.

REFERENCES:
patent: 3991868 (1976-11-01), Robinson et al.
patent: 4125336 (1978-11-01), Chu
patent: 4159882 (1979-07-01), Sanders et al.
patent: 4189246 (1980-02-01), Kane et al.
patent: 4204777 (1980-05-01), Jen
patent: 4210404 (1980-07-01), Hanger

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