Heat roller device

Details Heat roller device Heat roller device

1996-09-11

2000-07-18

Walberg, Teresa J.

Electric heating

Heating devices

Combined with container, enclosure, or support for material...

219216, 219478, 399334, G03G 1520

Patent

active

060910593

ABSTRACT:
A low cost, compact heat roller device is provided which includes a heat generating resistance for increasing the temperature of the heat roller wherein the heat generating resistance is divided into two parts in order to correspond to passage widths of different recording materials. The heating power of one of these heat generating resistances is changed and the temperature increase of a non-paper transport area of the heat roller is suppressed. Specifically, the heat roller device includes a heat roller and a press roller opposite the heat roller, two heat generating resistances formed on an outer surface of the heat roller which generate heat independently of one another, a common electrode for supplying current and separately arranged additional supply electrodes. The time during which the respective heat generating resistance is on, is changed, in relative terms, according to the object to be heated, and thus the heating power is changed.

REFERENCES:
patent: 4009953 (1977-03-01), Ravizza et al.
patent: 4075455 (1978-02-01), Kitamura et al.
patent: 4801968 (1989-01-01), Kogure et al.
patent: 5171969 (1992-12-01), Nishimura et al.
patent: 5204723 (1993-04-01), Hanada et al.
patent: 5241159 (1993-08-01), Chatteriee et al.
patent: 5402211 (1995-03-01), Yoshikawa

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