Image forming apparatus that switches power supply to plurality of heating elements
AssigneeCanon Kabushiki Kaisha
InventorsKohei Wakatsu, Kazuhiro Doda, Tsuguhiro Yoshida, Yutaka Sato, Ken Oi
Life of this patent
Estimating the term…
Abstract
In a case where fixing processing ends in a state where a power supply line is switched by a switching unit according to a first print command so that power is suppliable to a second heating element, the switching unit switches the power supply line from the second heating element to a first heating element so that power is suppliable to the first heating element, the switching occurring regardless of presence or absence of reception of a second print command subsequent to the first print command.
Claims11
An image forming apparatus comprising:
- an image forming unit configured to form an image on a recording material;
- a fixing unit including a rotation member and a heater configured to heat the rotation member, the heater including a plurality of heating elements including a first heating element and a second heating element having a length smaller than a length of the first heating element in a longitudinal direction of the rotation member, the fixing unit being configured to perform fixing processing to fix the image to the recording material by using heat of the heater, via the rotation member;
- and
- a switching unit configured to switch a power supply line so that power is suppliable to any one of the plurality of heating elements,
- wherein, in a case where the fixing processing ends in a state where the power supply line is switched by the switching unit according to a first print command so that power is suppliable to the second heating element, the switching unit switches the power supply line from the second heating element to the first heating element so that power is suppliable to the first heating element, the switching occurring regardless of presence or absence of reception of a second print command subsequent to the first print command.
An image forming apparatus comprising:
- an image forming unit configured to form an image on a recording material;
- a fixing unit including a rotation member and a heater configured to heat the rotation member, the heater including a plurality of heating elements including a first heating element and a second heating element having a length smaller than a length of the first heating element in a longitudinal direction of the rotation member, the fixing unit being configured to perform fixing processing to fix the image to the recording material by using heat of the heater, via the rotation member;
- a switching unit configured to switch a power supply line so that power is suppliable to any one of the plurality of heating elements;
- a detection unit configured to detect a temperature of the fixing unit;
- and
- a control unit configured to determine whether to switch the power supply line according to a temperature detection result of the detection unit.
Dependencies are inferred from the claim text.