Patent ID: 6654571
Filing Date: 2003-11-25
Classification: G03G

Abstract:
An image heating device, comprising:a heating member having a heater that is in contact with a recording material, which bears an image, and heats the image; a first temperature detecting member that is disposed above a surface of said heating member with a gap therebetween and detects a temperature of said heating member; a second temperature detecting member that is disposed in contact with the surface of said heating member and detects a temperature of said heating member; and control means for controlling a supply of a power to said heater based on a detected temperature of said first temperature detecting member and a detected temperature of said second temperature detecting member, said control means having a table for calculating the detected temperature of said first temperature detecting member based on an output of said first temperature detecting member, wherein said control means controls the supply of the power to said heater so that the detected temperature of said first temperature detecting member is maintained at a target temperature when a temperature of the surface of said heating member is within a predetermined temperature range, and said control means controls the supply of the power to said heater so that the detected temperature of said second temperature detecting member is maintained at the target temperature when the temperature of the surface of said heating member is out of the predetermined temperature range.