Temperature detector of heating roll type fixation device

Abstract

Abstract PURPOSE:To improve durability, by connecting a conductive member formed as one body on the same face of its sheet, to a temperature detecting element which is made press-contact with the surface of a heating roll through a heat resistance and abration resistance sheet by the elasticity of an elastic member. CONSTITUTION:A polyimide sheet 15 is made to adhere as one body to a plastic made hard substrate 13 superior in an electric insulating property, and two lines of a copper foil pattern 17 are formed on the inside face of the sheet 15 by electric plating, metallizing, etc. An output terminal of a glass enclosed type thermistor and the tip of the pattern 17 are connected electrically. The thermistor 4 is made press-contact by constant pressure through the polyimide sheet 15 to the circumferential face of a heating roll by elasticity of a pressure spring plate material 9 and a silicon sponge 3, by which a circumferential face temperature of the heating roll 8 is detected.

Inventors

• 👤 Makoto Niikura
• 👤 新倉　真

Bibliographic Details