Apparatus for dot-matrix printing with proportional character sp

Details Apparatus for dot-matrix printing with proportional character sp Apparatus for dot-matrix printing with proportional character sp

1980-09-29

1983-02-01

Sewell, Paul T.

Typewriting machines

Typing by other than type-face or type-die

Character formation by impact

400124, 400303, 400306, B41J 312, B41J 1958

Patent

active

043712746

ABSTRACT:
An apparatus for dot-matrix printing with proportional character spacing utilizes a conventional character generator for generating characters with fixed spacing in which a matrix storage area of equal size is assigned to each character, regardless of the actual width of the character, and has an advance control for a printer carriage drive for advancing the drive in increments corresponding to each single column of the storage area, the apparatus having a control unit operable in a state for generating proportional character spacing as well as in a state for generating characters with fixed spacing, and a printing control unit for operation in a state for generating proportional character spacing which executes advance increments for occupied columns in the storage areas and assigns a space advance of a predetermined width to the total of the number of empty columns between two adjacent characters in the storage areas.

REFERENCES:
patent: 3754229 (1973-08-01), Manber
IBM Tech. Disc. Bulletin, T. Nohzawa, vol. 22, No. 8B, Jan., 1980, pp. 3742-3743.
IBM Tech. Disc. Bulletin, M. Dyche, vol. 21, No. 4, Sep., 1978, pp. 1676-1677.
IBM Technical Disclosure Bulletin, Simpson et al., vol. 12, No. 12, May 1970, pp. 2258-2259.

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