Atmosphere fixing device

Abstract

Abstract PURPOSE:To perform efficient fixation without cockling a form, nor scorching nor fuming by controlling an infrared heater which has such a light emission wavelength range that the absorptivity of an image carrier is high almost to maximum temperature in the wavelength area wherein the absorptivity is maximum. CONSTITUTION:Heater surface temperature data obtained by converting the output of a heater surface temperature detecting means 6 from analog to digital through an A/D converter 9a is read by a CPU12 through an I/O port 10 (I/O 1) and compared with upper-limit heater surface temperature; when the heater surface temperature data is larger than the upper-limit temperature data, a processing program for the case sends an output for turning off an SSR14 through a driver 13 from an output port to power off the infrared heater 5, and the output is compared with lower-limit heater surface temperature data. When the heater surface temperature is smaller than the lower-limit temperature data, a processing program for the case generates an output for turning on the SSR14 through the driver 13 from the output port to power on the infrared heater 5.

Inventors

• 👤 Masatoshi Hosoi
• 👤 細井　正敏
• 👤 Mitsuhiko Ito
• 👤 伊藤　実彦
• 👤 Takashi Numanami
• 👤 沼波　隆

Bibliographic Details