Patent ID: 8254802
Filing Date: 2012-08-28
Classification: G03G

Abstract:
1. An image heating apparatus, comprising: an image heating member, which heats an image on a recording material in a nip portion; temperature detecting means for detecting temperature of a predetermined region of the image heating member; cooling means for cooling the predetermined region of the image heating member, the cooling means being provided with air blowing means for blowing air toward an air blowing port to cool the predetermined region of the image heating member, and a shutter which opens and closes the air blowing port; a first controlling portion configured to control the cooling means to perform a cooling operation for cooling the predetermined region of the image heating member when the detected temperature reaches a first predetermined temperature, and to control the cooling means to stop the cooling operation when the detected temperature reaches a second predetermined temperature lower than the first predetermined temperature; and a second controlling portion configured to stop the cooling operation for cooling the predetermined region of the image heating member in accordance with an end of image heating processing in spite of the detected temperature being higher than the second predetermined temperature so that the temperature of a border portion between the predetermined region of the image heating member and a sheet passing area of the recording material is not lower than the temperature of the predetermined region and to move the shutter to a closed position in accordance with the end of the image heating process.