Image forming apparatus
AssigneeCanon Kabushiki Kaisha
InventorHiroshi Takami
Life of this patent
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Abstract
An image forming apparatus includes a fixing unit, wherein the fixing unit includes a first temperature detection member detecting the temperature of a first non-passing area of the fixing unit; a second temperature detection member detecting the temperature of a second non-passing area; and a cooling unit supplying air so as to simultaneously cool the first non-passing area and the second non-passing area, wherein the image forming apparatus is configured, when the absolute value of the difference between the detection temperature of the temperature detection members becomes not less than a threshold value, while air is being supplied to the non-passing area and the second non-passing area, to stop the supplying of air by the cooling unit and continue recording material fixing processing.
Claims10
An image forming apparatus configured to form an image on a recording material, comprising:
- a fixing portion configured to fix the image on the recording material by heating the image while conveying the recording material bearing the image by a nip,
- a first temperature detection member configured to detect a temperature of one end area of the fixing portion perpendicular to a conveyance direction of the recording material;
- a second temperature detection member configured to detect a temperature of the other end area of the fixing portion perpendicular to the conveyance direction;
- and
- a cooling portion configured to supply air to the one end area of the fixing portion and the other end area of the fixing portion,
- wherein the apparatus determines to stop the supplying of air by the cooling portion and to continue a fixing process, depending on a difference value between the detection temperature detected by the first temperature detection member and the detection temperature detected by the second temperature detection member while supplying air by the cooling portion.
An image forming apparatus configured to form an image on a recording material, comprising:
- a fixing portion configured to fix the image on the recording material by heating the image while conveying the recording material bearing the image by a nip,
- a first temperature detection member configured to detect a temperature of one end area of the fixing portion perpendicular to a conveyance direction of the recording material;
- a second temperature detection member configured to detect a temperature of the other end area of the fixing portion perpendicular to the conveyance direction;
- and
- a cooling portion configured to supply air to the one end area of the fixing portion and the other end area of the fixing portion,
- wherein the image forming apparatus is configured to stop the supplying of air by the cooling portion and to continue a fixing process when a difference value between the detection temperature detected by the first temperature detection member and the detection temperature of detected by the second temperature detection member becomes not less than a threshold value while supplying air by the cooling portion.
Dependencies are inferred from the claim text.