Patent ID: 11953849
Assignee: BROTHER KOGYO KABUSHIKI KAISHA
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 11:
12. An image forming apparatus comprising:
a main body casing;
a fixing unit configured to fix developer to a sheet by heating and pressurization, the fixing unit including: a heating unit configured to heat the sheet and a temperature sensor configured to detect a temperature of the heating unit;
a fan configured to discharge air inside the main body casing to outside of the main body casing; and
a controller,
wherein when the fixing unit is fixing the developer to the sheet, the controller is configured to:
determine a heating unit temperature based on the temperature detected by the temperature sensor;
stop the fan in a case of determining that the heating unit temperature is not less than a threshold value; and
drive the fan in a case of determining that the heating unit temperature is less than the threshold value,

wherein in a case that the controller stops the fan during the fixing, the controller is configured to drive the fan after termination or after interruption of printing,
wherein the controller is configured to execute:
an expanding process for expanding received printing data to a raster image; and
a waiting process for stopping supply of a predetermined sheet until completion of the expanding process for the predetermined sheet; and

the controller is configured to drive the fan during the waiting process.