Title:
セラミックヒータ及びその製法
Document Type and Number:
Japanese Patent JP7349010
Kind Code:
B2
Abstract:
A method of manufacturing a ceramic heater, the method includes the steps of: (a) forming, on a surface of a first ceramic fired layer or an unfired layer, a resistance heating element or its precursor in a predetermined pattern; (b) forming a recessed groove along a longitudinal direction by radiating laser light to the resistance heating element or its precursor; (c) obtaining a layered body by disposing a second ceramic unfired layer on the surface of the first ceramic fired layer or the unfired layer; and (d) obtaining the ceramic heater in which the resistance heating element is embedded in a ceramic substrate by performing hot press firing on the layered body, wherein, in the step (b), the recessed groove is formed such that a side wall surface of the recessed groove is inclined relative to the surface of the first ceramic fired layer or the unfired layer.
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Inventors:
Takayoshi Akao
Natsuki Hirata
Natsuki Hirata
Application Number:
JP2022503599A
Publication Date:
September 21, 2023
Filing Date:
February 22, 2021
Export Citation:
Assignee:
Nippon Insulator Co., Ltd.
International Classes:
H05B3/12; H05B3/20; H05B3/28; H05B3/74
Domestic Patent References:
| JP2006228633A | ||||
| JP2006054125A | ||||
| JP2002190373A |
Attorney, Agent or Firm:
Patent Attorney Corporation ITEC International Patent Office