Image forming device

Details Image forming device Image forming device

1984-05-29

1985-07-30

Goldberg, E. A.

Recorders

Thermal recording

400120, G01D 1510

Patent

active

045325251

ABSTRACT:
An image forming device comprising sheets of paper which are to be printed, a transfer ribbon having an ink area of four colors which are to be thermally transferred onto the paper sheet, a platen roller for conveying the paper sheet, and a thermal head for heating the transfer ribbon, for thermally multitransferring its colors onto the paper sheet, and for keeping the transfer ribbon forced against the platen roller with the paper sheet interposed between them. Conveying rollers are arranged on that side of the platen roller where the paper sheet comes out of the platen roller, in the forward direction, and consist of a metal roller to the surface of which has adhered a micro-powder such as ceramic and tungsten carbide, and a rubber roller. The conveying rollers are driven but the platen roller is not during the printing operation of the thermal head, and at least one of the platen roller and the conveying rollers is driven during the non-printing operation of the thermal head.

REFERENCES:
patent: 4250511 (1981-02-01), Stein et al.
patent: 4410897 (1983-10-01), Moriguchi et al.
patent: 4458253 (1984-07-01), Goff, Jr. et al.

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