| 摘要 |
PROBLEM TO BE SOLVED: To obtain a fixing heater capable of causing an insulation substrate having heat generating resistors thereon to efficiently generate heat at low costs and also capable of preventing crack or breakage. SOLUTION: The heat generating resistors 121 to 123, made of silver-palladium or the like, which generate heat by supply of power, and power supply electrode parts 14 to 16, made of silver platinum or the like, whose low resistance value per unit area is low and which is less likely cause a heat generation phenomenon even if power is supplied are formed on one face of the long flat plate-like insulation substrate 11, made of aluminum nitride or the like, which has high heat conductivity characteristics. An overcoat layer 17 is formed on the heat generating resistors 121 to 123. Heat dissipation patterns 181 and 182 are formed on parts that generate heat most intensely when power is suddenly supplied to the face of the insulation substrate 11, which face is opposite to the heat generating resistors 121 to 123, by using a material whose heat conductivity is higher than that of the heat generating substrate 11. COPYRIGHT: (C)2007,JPO&INPIT |
