Patent ID: 8594548

Claim:
An image forming apparatus, comprising: a fixing device including: a fixing member configured to be heated by a heater; and a pressure member configured to be pressed against the fixing member in order to form a nip portion between the fixing member and the pressure member, wherein a sheet configured to carry an unfixed toner image is fed into the nip portion in order to fix the unfixed toner image thereon; a compressor configured to supply compressed air; a nozzle configured to be disposed at an outlet side of the nip portion and to blast the compressed air supplied from the compressor to an adhered portion of the sheet to the fixing member; an electromagnetic valve for opening and closing the supplied compressed air to the nozzle; and a controller configured to correct open-time of the nozzle based on image forming condition and to control number of times that the compressed air is blasted to the sheet in accordance with length of corrected open-time, wherein the open-time of the nozzle is determined in accordance with basis weight of the sheet, wherein the open-close movement of the electromagnetic valve is controlled by the controller.