Large area alumina ceramic heater

Electric heating – Heating devices – Combined with diverse-type art device

Reexamination Certificate

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Details

C219S542000, C219S543000, C219S544000, C219S547000, C219S548000

Reexamination Certificate

active

07005611

ABSTRACT:
A large area heater used, for example, in a laser printer belt fuser or as cooking surface, has an alumina substrate in which two bowed parts of alumina ceramic having opposed concave regions are formed together as a laminate. Electrical resistors are deposited on the laminate. The alumina laminate provides excellent resistance to uneven heating or other thermal stress. Alumina ceramic is readily shaped during manufacture and manufacturing costs and yield are good. A wide variety of large area heaters can usefully employ the laminate.

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