Thermal printer

Details Thermal printer Thermal printer

1985-12-27

1987-02-10

Evans, Arthur G.

Recorders

Thermal recording

346105, 400120, 400356, 4002242, G01D 1516

Patent

active

046426566

ABSTRACT:
A thermal printer automatically varies torque of a slip clutch provided between a motor and an ink film takeup roller with movements of a thermal head such that the torque transmitted to the takeup roller is smaller when the thermal head is in a transfer position than when the thermal head is in a non-transfer position. This assures that the takeup roller is driven properly by increasing the torque transmitted to the takeup roller when the thermal head is in the non-transfer position and an ink film is taken up in a large amount. When the thermal head is in the transfer position and the ink film is taken up in a small amount, the torque transmitted to the takeup roller is reduced to avoid a great tension acting on the ink film.

REFERENCES:
patent: 4313376 (1982-02-01), Swope et al.
patent: 4507667 (1985-03-01), Tsuboi

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