Heat roll for electrophotography

Details Heat roll for electrophotography Heat roll for electrophotography

1988-04-05

1989-12-19

Grimley, A. T.

Electric heating

Heating devices

Combined with diverse-type art device

29130, 29132, 219469, 355285, 355289, B21B 3108, B21B 2706, H05B 302, G03G 1520

Patent

active

048884642

ABSTRACT:
A heat roll for electrophotography of a surface heating type having a heating resistor is arranged such that a bonding layer, an insulating layer, a resistance layer, and a surface insulating layer are consecutively provided on an outer surface of a hollow cylindrical core, and a bearing member for fitting with a bearing is fitted at each opposite end of the heat roll. A pipe or a round bar formed of aluminum, an aluminum alloy, copper, a copper alloy, or the like which has a greater coefficient of thermal conductivity than that of mild steel is disposed inside the core to permit a uniform distribution of the temperature. In addition, a gap of 0.2 mm or more is provided between the inner surface of the core and an outer peripheral surface of the member formed of the high-temperature conductive material. As a result, effects that are attributable to a difference in the coefficients of thermal conductivity can be alleviated, and a temperature rise of the heat roll up to a predetermined temperature can be accelerated.

REFERENCES:
patent: 4395109 (1983-07-01), Nakajima et al.
patent: 4714819 (1987-12-01), Yamashita
patent: 4724305 (1988-02-01), Iimura et al.
patent: 4801968 (1989-01-01), Kogure et al.

Affiliated with

Also associated with

Rating

Heat roll for electrophotography does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Heat roll for electrophotography, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Heat roll for electrophotography will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1904116