Toner fixing heater device having inclined heater electrode ends

Details Toner fixing heater device having inclined heater electrode ends Toner fixing heater device having inclined heater electrode ends

1997-10-30

1999-09-28

Pelham, Joseph

Electric heating

Heating devices

Combined with diverse-type art device

219469, 399331, 310236, G03G 1520, H01R 3904

Patent

active

059582693

ABSTRACT:
In a toner-fixing heater device, a heater strip in a meandering pattern and a pair of heater electrodes are formed on an insulator film which is in turn fixed to a cylindrical roller body. Each heater electrode which slidably contacts a brush electrode has a leading and trailing edges formed inclinedly at an inclination angle .theta., e.g., 50.degree.. The axial width Wd of the heater electrode 14, the circumferential width Wg of a spacing between the leading and the trailing edges, and the circumferential width Wb of the brush electrode are determined to satisfy (Wd/tan .theta.+Wd).gtoreq.Wg. This arrangement assures a continuous sliding contact between the heater electrode and the brush electrode.

REFERENCES:
patent: 5420392 (1995-05-01), Sakata
patent: 5532807 (1996-07-01), Takemoto
patent: 5575942 (1996-11-01), Watanabe
patent: 5729814 (1998-03-01), Suzuki et al.

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