Thermal print head for heat or non-heat-sensitive paper

Details Thermal print head for heat or non-heat-sensitive paper Thermal print head for heat or non-heat-sensitive paper

1983-12-22

1985-05-07

Goldberg, E. A.

Recorders

Thermal recording

400120, G01D 1510

Patent

active

045161372

ABSTRACT:
A printer having a thermal print head capable of printing directly on heat-sensitive paper, and printing on non-heat-sensitive paper through a thermal ribbon. The printer comprises a carriage drive circuit for moving the thermal print head along a platen for printing each line of characters, and a detector for sensing the thermal ribbon to check if the thermal ribbon is usable or not. The printer further comprises a control device responsive to a signal from the detector, for selecting, while the thermal ribbon is sensed, a unidirectional printing mode in which the printing movements of the thermal print head take place in a predetermined one of the opposite longitudinal directions of the platen, and selecting, while the thermal ribbon is not sensed, a bidirectional printing mode in which the printing movements take place in either one of the opposite longitudinal directions.

REFERENCES:
patent: 4025830 (1977-05-01), Delaporte
patent: 4091913 (1978-05-01), Ku et al.
IBM Technical Disclosure Bulletin, vol. 27, No. 6, Nov. 1984, pp. 3645-3647.

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