Ceramic heater made of fused silica glass having roughened surfa

Details Ceramic heater made of fused silica glass having roughened surfa Ceramic heater made of fused silica glass having roughened surfa

1995-03-08

1997-07-01

Walberg, Teresa J.

Electric heating

Heating devices

With heating unit structure

219548, 338308, 392434, 392438, H05B 316, H01C 1012

Patent

active

056434839

ABSTRACT:
An improvement is proposed in a ceramic heater which is an integral body comprising a flat substrate plate made from an electrically insulating ceramic material, e.g., fused silica glass, and a layer of an electroconductive material formed on one surface of the substrate plate in a pattern of an electric heater element. One of the surfaces of the insulating substrate plate, on which the heater layer is formed, is subjected to a surface roughening treatment, e.g., by sand blasting, prior to the formation of the heater layer so as to be imparted with a specified surface roughness so that the heat generated in the heater layer and transmitted to the other surface as infrared rays is irregularly scattered .

REFERENCES:
patent: 3811934 (1974-05-01), Glaser
patent: 5304784 (1994-04-01), Tagashira et al.
patent: 5431741 (1995-07-01), Sakaguchi et al.

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