Thermoelectric printer with electrode disposed in ribbon cartrid

Details Thermoelectric printer with electrode disposed in ribbon cartrid Thermoelectric printer with electrode disposed in ribbon cartrid

1989-11-29

1991-07-23

Fuller, Benjamin R.

Recorders

Thermal recording

400120, G01D 510, B41J 239

Patent

active

050347551

ABSTRACT:
A thermoelectric printer includes a cartridge accommodating a pair of reels around which a thermoelectric ink ribbon is wound, a carriage for removably supporting the cartridge, a printing head disposed on the carriage to apply a recording voltage to the ink ribbon to carry out printing, and a return electrode disposed inside the cartridge to electrically contact the ink ribbon. A resilient member conductive to the return electrode is also arranged inside the cartridge. The carriage has a contact element. When the cartridge is installed to the carriage, the contact element protrudes inside the cartridge to forcibly-contact the resilient member to form an electric correction between them. Then, a printing current flows from a recording electrode of the printing head to the ink ribbon, return electrode, resilient member and contact element and is then discharged to the carriage.

REFERENCES:
patent: 4329071 (1982-05-01), Applegate et al.
patent: 4420758 (1983-12-01), Tabata et al.
patent: 4855758 (1989-08-01), Kuwabara et al.
patent: 4897668 (1990-01-01), Nagato et al.

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