US 12,393,142 B2
Image forming apparatus
Yohei Doi, Mishima Shizuoka (JP)
Assigned to TOSHIBA TEC KABUSHIKI KAISHA, Tokyo (JP)
Filed by TOSHIBA TEC KABUSHIKI KAISHA, Tokyo (JP)
Filed on Feb. 9, 2024, as Appl. No. 18/437,663.
Application 18/437,663 is a continuation of application No. 17/837,758, filed on Jun. 10, 2022, granted, now 11,927,901.
Application 17/837,758 is a continuation of application No. 17/233,749, filed on Apr. 19, 2021, granted, now 11,385,579, issued on Jul. 12, 2022.
Claims priority of application No. 2020-131496 (JP), filed on Aug. 3, 2020.
Prior Publication US 2024/0184233 A1, Jun. 6, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. G03G 15/20 (2006.01); G03G 15/00 (2006.01)
CPC G03G 15/2039 (2013.01) [G03G 15/5004 (2013.01)] 18 Claims
OG exemplary drawing
 
1. An image forming apparatus comprising:
a heater configured to generate heat;
a voltage detection circuit configured to measure a voltage of AC power input to the image forming apparatus; and
a controller configured to:
determine a part of the measured voltage of AC power input that exceeds a threshold voltage; and
periodically switch AC power to the heater between an ON state and an OFF state according to the determination,
wherein the controller periodically switches AC power to the heater between the ON state and the OFF state so that the part of the measured voltage of AC power which exceeds the threshold voltage is not applied to the heater.