US 12,174,568 B2
Image forming apparatus
Katsutoshi Mita, Mishima Shizuoka (JP)
Assigned to TOSHIBA TEC KABUSHIKI KAISHA, Tokyo (JP)
Filed by Toshiba Tec Kabushiki Kaisha, Tokyo (JP)
Filed on Mar. 16, 2023, as Appl. No. 18/184,996.
Prior Publication US 2024/0310762 A1, Sep. 19, 2024
Int. Cl. G03G 15/20 (2006.01)
CPC G03G 15/205 (2013.01) [G03G 15/2064 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An image forming apparatus comprising:
a conveyor configured to convey a printing medium;
an image forming station configured to form an image on the printing medium;
a fixing device including a fixing roller, a pressurizing roller positioned opposite the fixing roller, and a heater configured to heat a paper passing region between the fixing roller and the pressurizing roller, the fixing device being configured fix the image on the printing medium by heating the printing medium as the printing medium passes through the paper passing region;
a temperature sensor configured to detect a temperature of a first region, the first region including an end of the paper passing region in a paper width direction, the paper width direction being orthogonal to a movement direction of the printing medium through the paper passing region; and
a controller configured to lower a set temperature of the heater in response to a determination that (a) a determination condition is satisfied, the determination condition relating to a start of the conveyance of the printing medium to the fixing device by the conveyor and (b) the temperature detected by the temperature sensor is higher than a threshold temperature.