Sheet feeder, image forming apparatus, and image forming system
AssigneeCanon Kabushiki Kaisha
InventorKoji Kawamura
Life of this patent
Estimating the term…
Abstract
A sheet feeder includes a first rotary member, a separation member that cooperates with the first rotary member in holding the sheet between the separation member and the first rotary member to define a separation nip, a conveyance unit disposed downstream of the separation nip in a conveyance direction of the sheet, a driving unit, and a control unit. The first rotary member feeds a sheet. The conveyance unit conveys the sheet. The driving unit drives the first rotary member. The control unit controls the driving unit to stop driving the first rotary member when a leading edge of the sheet reaches the conveyance unit, and controls the driving unit to restart driving the first rotary member when a trailing edge portion of the sheet comes out of the separation nip.
Claims19
A sheet feeder comprising:
- a pickup member configured to pick up a sheet stacked on a tray;
- a feeding member configured to feed the sheet picked up by the pickup member;
- a separation member configured to form a separation nip with the feeding member and configured to separate sheets one by one at the separation nip;
- a conveyance unit disposed downstream of the separation nip in a conveyance direction of the sheet and configured to convey the sheet;
- a driving unit configured to drive the feeding member;
- and
- a control unit configured to control the driving unit,
- wherein the control unit controls the driving unit to stop driving the feeding member after a leading edge of a first sheet reaches the conveyance unit, and controls the driving unit to restart driving the feeding member while a trailing edge of the first sheet comes out of the separation nip, and
- wherein the pickup member does not pick up a second sheet succeeding the first sheet before the trailing edge of the first sheet comes out of the separation nip.
A sheet feeder comprising:
- a rotary member configured to pick up a sheet stacked on a tray;
- a separation member configured to form a separation nip with the rotary member and configured to separate sheets one by one at the separation nip;
- a conveyance unit disposed downstream of the separation nip in a conveyance direction of the sheet and configured to convey the sheet;
- a driving unit configured to drive the rotary member;
- and
- a control unit configured to control the driving unit,
- wherein the control unit controls the driving unit to stop driving the rotary member after a leading edge of a first sheet reaches the conveyance unit, and controls the driving unit to restart driving the rotary member while a trailing edge of the first sheet comes out of the separation nip, and
- wherein the rotary member does not pick up a second sheet succeeding the first sheet before the trailing edge of the first sheet comes out of the separation nip.
Dependencies are inferred from the claim text.