Method and apparatus for image registration improvements in...

Incremental printing of symbolic information – Thermal marking apparatus or processes – Record receiver driving means

Reexamination Certificate

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Reexamination Certificate

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06999108

ABSTRACT:
A thermal printer apparatus has a plurality of print stations for recording image information onto a receiver moving past the print stations. An adjustable-speed receiver drive mechanism is adapted to advance the receiver along the path. A plurality of sensors adapted to detect the temperature of the receiver and other surfaces along the path. A controller adjusts the speed of the drive mechanism as a function of the detected temperatures so as to effect a shim of the average raster line pitch of the printer to compensate for changes in the temperature of the receiver. An empirical model of receiver speed as a function of measured receiver temperature is used in software to predict receiver speed during printing.

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patent: 6493012 (2002-12-01), Buch et al.
patent: 59-011268 (1984-01-01), None
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patent: 04-236565 (1992-08-01), None
patent: 05-031930 (1993-02-01), None
patent: 11-157113 (1999-06-01), None

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