Dot printers with width compression capabilities

Details Dot printers with width compression capabilities Dot printers with width compression capabilities

1995-08-23

1998-11-24

Coles, Edward L.

Typewriting machines

Sheet or web

Including friction-feed means

395101, 395102, 395109, 395110, 400103, 40012401, 40012411, 101 9301, 101 9305, 101 9313, 382183, 382258, G06F 1500, B41J 200, B41J 222, B41J 300

Patent

active

058419543

ABSTRACT:
A printer for printing font and/or barcode character bars comprised of a plurality of rows in a direction of printing movement perpendicular to the character bars which are in turn comprised of a plurality of close adjacent dots to improve print quality at high printing speeds which induce elongated dot smear in the direction of printing movement and improve readability of optically read barcodes. There is a printhead for printing characters bars on a media surface as a series of dots. A drive system creates relative movement in the direction of printing movement between the printhead and the media. And, there is print logic for outputting character print signals to the printhead wherein the print logic includes logic for shaving at least a portion of one dot, one dot, or more from an end of each of the plurality of rows of a character bar which is otherwise over-wide.

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Bassetti, L.W., and S. Kantor, "Print Enhancement for Laser Printers," IBM Technical Disclosure Bulletin 27(5): pp. 3071-3072, Oct. 1984.

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