Thermal printer control system

B - Operations – Transporting – 41 – J

Patent

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Details

B41J 33/00 (2006.01) B41J 3/24 (2006.01) B41J 3/42 (2006.01) B41J 11/20 (2006.01) H04N 1/40 (2006.01)

Patent

CA 2165061

An improved thermal printer has circuits that are responsive to selected parameters of the printer and to the contents (text/image data) of a document to be printed to selectively enable the individual printing electrodes with printing impulses of varying energy depending upon when the electrode had printed. Other circuits cause the selective process to be responsive to whether electrodes adjacent a selected electrode had printed and how recently such printing took place. In different embodiments, circuits utilize not only the history of a selected electrode and its neighbors, the as yet unprinted portion of the document to be printed is utilized to aid in the selection of an appropriate printing impulse.

L'invention concerne une imprimante thermique améliorée qui possède des circuits sensibles à des paramètres sélectionnés de l'imprimante et au contenu (données texte/image) d'un document à imprimer afin de fournir sélectivement à des électrodes individuelles d'impression des impulsions d'impression d'énergie variable en fonction du moment d'impression de l'électrode. D'autres circuits rendent le procédé sélectif sensible dans le but de savoir si des électrodes adjacentes à une électrode sélectionnée ont imprimé et quand cette impression a eu lieu. Dans différents modes de réalisation, des circuits utilisent non seulement l'historique d'une électrode sélectionnée et de ses électrodes voisines, mais aussi la partie non imprimée du document à imprimer qui est utilisée pour faciliter la sélection d'une impulsion d'impression appropriée.

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