Non-linear power control of thermal printheads in plastic card printers

A multicolor image is printed on a non-vinyl plastic identity document in an identity document printing system. Pixel density data of a multi-color image to be printed is adjusted using a non-linear pixel density adjustment curve, thereby adjusting the power applied to the thermal printhead. Adjusti...

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Bibliographische Detailangaben

1. Verfasser:	KRAGTORP WADE
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	CORRECTION OF TYPOGRAPHICAL ERRORS i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME LINING MACHINES PERFORMING OPERATIONS PRINTING SELECTIVE PRINTING MECHANISMS STAMPS TRANSPORTING TYPEWRITERS
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