Incremental printing of symbolic information – Thermal marking apparatus or processes – Record receiver driving means
Patent
1992-11-24
1995-10-24
Tran, Huan H.
Incremental printing of symbolic information
Thermal marking apparatus or processes
Record receiver driving means
347176, B41J 2325
Patent
active
054614090
ABSTRACT:
A thermal transfer printer which has a drum around which paper is conveyed and a thermal transfer head for heat-pressing an ink ribbon on a paper sheet to print pictures and characters. The printer includes a roller movably installed and spaced from the drum by a predetermined distance, a belt circumscribing the drum and roller for conveying the paper sheet, clamps installed on either side of the belt for clamping the end of the paper sheet to the belt and having flanges with through holes on one end of the clamps, and a clamping release mechanism for releasing the clamping action of the clamps. In the method, the paper sheet is conveyed in a first direction and at a first speed for successively printing different colors and conveyed in a second opposite direction at a second speed faster than the first speed to prepare for printing of the next color. As a result, printing time is minimized.
REFERENCES:
patent: 4829320 (1989-05-01), Une et al.
patent: 4985711 (1991-01-01), Nakamura et al.
patent: 5124724 (1992-06-01), Hatakeyama et al.
Samsung Electronics Co,. Ltd.
Tran Huan H.
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