Image forming apparatus which controls fan speed of first and second air outlet ports facing sheet
AssigneeCanon Kabushiki Kaisha
InventorYuki Uchida
Life of this patent
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Abstract
An image forming apparatus includes a single fan, a first air outlet port disposed so as to supply air sent from the fan to an image surface of the sheet, a second air outlet port disposed so as to supply the air sent from the fan to a surface opposite to the image surface of the sheet, and a control unit configured to control the fan. The control unit includes a first mode of controlling a rotational speed of the fan at a first rotational speed in a case where the sheet is not present in a position facing the first air outlet port and control the rotational speed of the fan at a second rotational speed lower than the first rotational speed in a case where the sheet is present in the position facing the first air outlet port.
Claims18
An image forming apparatus comprising:
- a transfer unit configured to transfer a toner image onto a sheet;
- a fixing unit configured to fix the toner image transferred by the transfer unit on the sheet;
- a discharge unit configured to discharge the sheet on which the toner image has been fixed;
- a conveyance path through which the sheet conveyed from the fixing unit to the discharge unit passes;
- a single fan configured to rotate so as to send air;
- a first air outlet port disposed on the conveyance path, and disposed so as to supply the air sent from the fan to an image surface of the sheet passing through the conveyance path, the image surface being a surface on which the toner image has been fixed;
- a second air outlet port disposed on the conveyance path, and disposed so as to supply the air sent from the fan to a surface opposite to the image surface of the sheet passing through the conveyance path;
- and
- a control unit configured to control the fan,
- wherein the control unit includes a first mode of controlling a rotational speed of the fan at a first rotational speed in a case where the sheet is not present in a position facing the first air outlet port and control the rotational speed of the fan at a second rotational speed lower than the first rotational speed in a case where the sheet is present in the position facing the first air outlet port.
An image forming apparatus comprising:
- a transfer unit configured to transfer a toner image onto a sheet;
- a fixing unit configured to fix the toner image transferred by the transfer unit on the sheet;
- a discharge unit configured to discharge the sheet on which the toner image has been fixed;
- a conveyance path through which the sheet conveyed from the fixing unit to the discharge unit passes;
- a single fan configured to rotate so as to send air;
- a first air outlet port disposed on the conveyance path, and disposed so as to supply the air sent from the fan to an image surface of the sheet passing through the conveyance path, the image surface being a surface on which the toner image has been fixed;
- a second air outlet port disposed on the conveyance path, and disposed so as to supply the air sent from the fan to a surface opposite to the image surface of the sheet passing through the conveyance path;
- and
- a control unit configured to control the fan,
- wherein the control unit includes a first mode of controlling a rotational speed of the fan at a first rotational speed in a case where a printing area of the sheet is not present in a position facing the first air outlet port and controlling the rotational speed of the fan at a second rotational speed lower than the first rotational speed in a case where the printing area of the sheet is present in the position facing the first air outlet port.
Dependencies are inferred from the claim text.