Image forming apparatus
AssigneeCanon Kabushiki Kaisha
InventorsKengo Sato, Kenji Aoki
Life of this patent
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Abstract
An image forming apparatus includes a first roller pair including a first roller and a second roller, a first driving unit, a second roller pair, a second driving unit, an image forming unit, and a control unit configured to execute a first mode and a second mode. The second mode includes (1) a first processing, (2) a second processing, and (3) a third processing of controlling the first driving unit such that the rotational speed of the first roller pair becomes faster than the second rotational speed. The first mode includes (1) a fourth processing, (2) a fifth processing, and (3) a sixth processing of controlling the first driving unit such that the rotational speed of the first roller pair is decelerated from the first rotational speed to equal to or less than the second rotational speed.
Claims15
A sheet conveyance apparatus comprising:
- a first conveyance roller pair including a first roller and a second roller configured to nip and convey a sheet;
- a separation mechanism configured to switch the second roller to a contact position in which the first roller and the second roller are configured to convey the sheet by coming into contact with each other, and to a separated position in which the first roller and the second roller are separated from each other;
- a first driving unit configured to drive the first roller;
- a second conveyance roller pair disposed downstream of the first conveyance roller pair in a conveyance direction of the sheet, and configured to nip and convey the sheet;
- and
- a control unit configured to control the separation mechanism and the first driving unit,
- wherein the control unit is configured to control the first driving unit so as to change a rotation speed of the first roller based on a grammage of the sheet in a state that the second roller is positioned at the separation position.
Dependencies are inferred from the claim text.