Thermal printer operative in three modes including direct printi

Details Thermal printer operative in three modes including direct printi Thermal printer operative in three modes including direct printi

1985-05-22

1987-03-24

Wright, Jr., Ernest T.

Typewriting machines

Typing by other than type-face or type-die

Thermal

400208, 400225, 4002272, 400229, 4002403, 4002404, 400249, 346 76PH, B41J 320

Patent

active

046521542

ABSTRACT:
A thermal printer includes a thermal head pressed against a paper sheet on a platen directly or through an ink ribbon, a carrier which holds the thermal head and on which a black or color ink ribbon is detachably mounted, a first detector for generating a color output signal upon detecting that a color ink ribbon cassette is mounted on the carrier, a second detector for generating a "black" signal while detecting a black area of the ink ribbon, and a control circuit for setting a thermal printing mode, a black or a color ink printing mode in accordance with the output signals from the first and second detectors. When the thermal printer is powered, the control circuit sets the color ink printing mode upon detecting that the color output signal is continuously generated from the first detector. When the color output signal is not generated from the first detector, the control circuit moves the thermal head by a given distance upon pressing it against the paper sheet on the platen. In this case, the control circuit sets the black ink or the thermal printing mode in accordance with the output signal from the second detector.

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