Image forming apparatus
AssigneeCanon Kabushiki Kaisha
InventorYUKI SUGIYAMA
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Abstract
An image forming apparatus includes an image forming unit, a transfer unit and a control unit. The control unit switches between a first control in which the recording material is conveyed in the first direction and a second control in which the recording material is conveyed in a second direction. In performing a double-side printing in which an image is formed on first and second sides, the control unit performs a reciprocating control in which the first and second controls are alternately switched at least one time in a case in which it is predicted that the recording material reaches a transfer portion earlier than a toner image formed by the image forming unit to be transferred onto the second side when the recording material is being conveyed in a double-side conveyance path.
Claims21
1-10. (canceled)
An image forming apparatus comprising:
- an image forming unit configured to form a toner image;
- a transfer unit configured to transfer the toner image formed by the image forming unit onto a sheet;
- a fixing unit configured to fix the toner image transferred onto the sheet to the sheet;
- a reversing unit provided downstream of the fixing unit in a first direction, the first direction being a direction in a conveyance direction of the sheet;
- a driving unit configured to drive the fixing unit and the reversing unit;
- and
- a control unit configured to switch between (1) a first control in which the reversing unit is controlled so as to convey the sheet in the first direction and (2) a second control in which the reversing unit is controlled so as to convey the sheet in a second direction opposite to the first direction,
- wherein in performing double-side printing in which an image is formed on a first side and a second side different from the first side of the sheet, the control unit is configured, after the image has been formed on the first side, to switch control of the reversing unit from the first control to the second control so that the sheet is introduced into a double-side conveyance path for conveyance to the transfer unit again, and
- wherein while the sheet is in the double-side conveyance path, the control unit is configured to perform reciprocating control in which the control unit alternately switches between the first control and the second control.
Dependencies are inferred from the claim text.