Method of enhancing fine line of printer and related circuit

Details Method of enhancing fine line of printer and related circuit Method of enhancing fine line of printer and related circuit

1987-05-18

1988-11-15

Sewell, Paul T.

Typewriting machines

Typing by other than type-face or type-die

Thermal

400121, 101 9304, 346 76PH, B41J 312, B41J 320

Patent

active

047845015

ABSTRACT:
The present invention relates to a method and a circuit for enhancing a fine line in the direction perpendicular to the arraying direction of the printing elements (i.e., in the direction of moving the printing paper) of a line printer which prints by applying either thermal elements or wires giving dot impact, and in which, for example, supposing the successive 4 printing elements comprising A, B, C and D, when the printing element C prints black and all others do white, the printing element C prints black and the other print while, the printing element B is made to print black to enhance a fine line by printing with two printing elements, so that the total visibility of the fine line is improved.

REFERENCES:
patent: 4347518 (1982-08-01), Williams
patent: 4532503 (1985-07-01), Pennebaker
patent: 4574293 (1986-03-01), Inui
patent: 4683479 (1987-07-01), Horiya
IMB Tech. Disc. Bulletin, H. E. Berkebile, vol. 25, No. 10, Mar. 1983, 400-121 (2 pages) "Draft to Text Font Conversion Algorithum".

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