Thermally sensitive printer

Electrical generator or motor structure – Dynamoelectric – Oscillating

Patent

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H02K 3300

Patent

active

043509070

ABSTRACT:
An improved thermally sensitive printer for recording characters on a thermally sensitive medium is provided. An exothermic printing head includes a substrate and a plurality of selectively energized resistance elements supported on the substrate, the resistance elements being energized during a printing operation to print characters on a thermally sensitive medium in contact therewith. A rotary platen is provided for bringing the thermally sensitive medium into printing contact with the resistance printing elements to thereby effect printing on the thermally sensitive medium during a printing operation. The rotary platen is also adapted to incrementally advance the thermally sensitive printing medium after each printing operation. An oscillatory drive motor is provided for producing a reciprocating rotary driving force and a rotary motion transformer is coupled intermediate the oscillatory driving motor and the rotary platen for rotating the rotary platen through a predetermined pitch in response to said reciprocating rotary drive of said oscillatory driving motor to thereby intermittently advance by a predetermined distance the thermally sensitive medium after each printing operation.

REFERENCES:
patent: 2079421 (1937-05-01), Poole
patent: 2771572 (1956-11-01), Adams
patent: 3229225 (1966-01-01), Schimpf
patent: 3278818 (1966-10-01), Winestock
patent: 3359437 (1967-12-01), Massie
patent: 3475629 (1969-10-01), Lagier
patent: 3997766 (1976-12-01), Voegelin

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