Ceramic heater and method for producing ceramic heater

摘要

There is disclosed a ceramic heater 11 comprising: at least a plate member 12 made of insulating ceramics in which one or more pair(s) of through-holes 13 are formed; a rod member 14, being made of conductive ceramics, having a power-supply terminal 18 at one end thereof, and being inserted into the through-hole 13 at another end thereof; a conductive layer 19 made of conductive ceramics formed on the plate member 12; and a coating layer 21 made of insulating ceramics formed on the conductive layer; wherein one end face 16 of the rod member has a same plane with a main surface 15 of the plate member; the conductive layer 19 having a heater pattern 20 is formed on the main surface 15 of the plate member having the same plane; and the rod members 14 are electrically insulated not to be short-circuited to each other in the opposite main surface 17. There can be provided a ceramic heater by which an object to be heated being directly put thereon can be heated uniformly and of which heating efficiency is high and in which the heater main body is not large in size and is compact.