High quality printer

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B - Operations, Transporting

41

J

101/96.011, 101/

B41J 2/505 (2006.01) B41J 19/20 (2006.01) G06K 15/10 (2006.01)

Patent

CA 1106232

ABSTRACT OF THE DISCLOSURE The printing apparatus disclosed herein generates alpha- numeric characters of high quality, using a multi-pin printing head capable of forming discrete dots or pels, by controlling the actuation of the printing head with a timing resolution which is an order of magnitude finer than the nominal dot diameter so that a line smoothness for slanted or curved lines is obtained which is greater than that obtainable by a uniform matrix. The printing head is repeatedly traversed or scanned across the paper to provide essentially parallel lines of scan separated vertically by a distance which is a submultiple of the vertical spacing of the pins so that overlapping dots may be provided in the vertical dimension. By these means the apparatus facilitates the formation of smooth lines of essentially arbitrary slope or curvature.

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