Incremental printing of symbolic information – Thermal marking apparatus or processes – Multicolor
Patent
1996-11-12
1998-12-08
Lee, N.
Incremental printing of symbolic information
Thermal marking apparatus or processes
Multicolor
347175, 347218, 4001202, B41J 1100
Patent
active
058477420
ABSTRACT:
In a one-pass multi-head type color thermal printer having at least first to third printing stages arranged along a transport path, slacks are provided in the recording material between the first to third printing stages. The amounts of the slacks are measured by respective slack sensors. The transporting speed of the recording material through the second printing stage is fixed at a constant value, and the transporting speeds through the first and third printing stages are controlled in accordance with the outputs from the slack sensors, so as to maintain the amounts of the slacks constant. The slacks are provided during an initial loading of the recording material by delaying starting the transport of the recording material in downstream ones of the printing stages for a time after a leading edge of the recording material moves in each of the downstream printing stages until each of the slacks reaches a predetermined amount.
REFERENCES:
patent: 4996541 (1991-02-01), Mori et al.
patent: 5386772 (1995-02-01), Tolle et al.
patent: 5711620 (1998-01-01), Sasaki et al.
patent: 5724085 (1998-03-01), Inui et al.
Fuji Photo Film Co. , Ltd.
Lee N.
Vo Anh T. N.
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