Thermal printing apparatus

Details Thermal printing apparatus Thermal printing apparatus

1983-12-14

1985-08-20

Goldberg, E. A.

Recorders

Thermal recording

400120, 219216, 219 1075, H05B 508

Patent

active

045367752

ABSTRACT:
Thermal printing apparatus includes a magnetic core having a gap, an electromagnetic coil mounted on the core for generating an electromagnetic field in the core and through the gap, a rotatably mounted cylindrical thermal print head having type characters on its periphery and located partially within the gap in the magnetic core, and a mechanism for rotating the print head to locate a selected type character in printing position in cooperative relation to a pressure element. The magnetic field generates circulating currents in the print head for heating it to a temperature necessary for causing heat-sensitive ink to be transferred from a ribbon to a record medium, both of which are positioned between the print head and the pressure element.

REFERENCES:
patent: 2486985 (1949-11-01), Ruderfer
patent: 2515381 (1950-07-01), Resch
patent: 3139026 (1964-06-01), Meckstroth et al.
patent: 3161457 (1964-12-01), Schroeder et al.
patent: 3476877 (1969-11-01), Perkins et al.
patent: 3509980 (1970-05-01), Loughry et al.
patent: 3578946 (1971-05-01), Colello
patent: 3631512 (1971-12-01), Janning
patent: 3726212 (1973-04-01), Combs
patent: 3764767 (1973-10-01), Randolph
patent: 3985216 (1976-10-01), McIntosh et al.
patent: 4462035 (1984-07-01), Koto

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