Patent ID: 9316970
Filing Date: 2016-04-19
CPC Classification: G03G

Claim Text:
1. An image forming apparatus for heating and fixing a toner image formed on a recording medium, comprising: a storage unit configured to store a recording medium; an obtaining unit configured to obtain information regarding the size of the recording medium stored in the storage unit, a conveying unit configured to convey the recording medium stored in the storage unit; an image forming unit configured to form an image on the recording medium conveyed by the conveying unit; a fixing unit, having a plurality of heaters including a first heater performing heating based on the amount of the power supplied and a second heater performing heating based on the amount of the power supplied, configured to fix the image on the recording medium by heating the image on the recording medium using the plurality of heaters; a control unit configured to determine a heater to which the power is supplied among the plurality of heaters based on the information obtained by the obtaining unit and configured to control the amount of power to be supplied to the determined heater based on the resistance value of the determined heater; and a detection unit, provided in a power line for supplying power to the plurality of heaters, configured to detect current values of the plurality of heaters; and a determining unit configured to: wherein the control unit is configured to control, in a case where the size of the recording medium is a first size, which is larger than or equal to the predetermined size, the amount of the power supplied to the first heater, and configured to control, in a case where the size of the recording medium is a second size, which is smaller than the predetermined size, the amount of the power supplied to the second heater.