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US 2019/0193971 A1Published application
Sheet feeding apparatus and image forming apparatus
AssigneeCanon Kabushiki Kaisha
InventorKeita Nakajima
Life of this patent
Estimating the term…
Abstract
The sheet feeding apparatus includes an encoder configured to output a signal according to the rotation state of a retard roller, a feed motor configured to drive a pick-up roller, and a control unit configured to control the feed motor, make the pick-up roller feed a first sheet, and change the timing at which the pick-up roller is made to feed a second sheet following the first sheet, based on a signal output from the encoder after the trailing edge of the first sheet passes a separation nip portion.
Claims18
A sheet feeding apparatus comprising:
- a sheet stacking unit on which a sheet is stacked;
- a feeding rotary member configured to feed the sheet from the sheet stacking unit;
- a conveyance rotary member configured to convey the sheet fed by the feeding rotary member;
- a separation rotary member forming a nip portion with the conveyance rotary member, and separating sheets at the nip portion, the separation rotary member urged to the conveyance rotary member by an urging member;
- an output unit configured to output a signal according to a rotation state of the separation rotary member;
- a driving unit configured to drive the feeding rotary member;
- and
- a control unit configured to control the driving unit to make the feeding rotary member feed a first sheet, and change a timing at which the feeding rotary member feeds a second sheet following the first sheet based on the signal output from the output unit after a trailing edge of the first sheet passes the nip portion.
5 more elements
A sheet feeding apparatus comprising:
- a sheet stacking unit on which a sheet is stacked;
- a feeding rotary member configured to feed the sheet from the sheet stacking unit;
- a conveyance rotary member configured to convey the sheet fed by the feeding rotary member;
- a separation rotary member forming a nip portion with the conveyance rotary member, and separating sheets at the nip portion, the separation rotary member urged to the conveyance rotary member by an urging member;
- a holder configured to hold the separation rotary member;
- a detection unit configured to detect an acceleration of the holder;
- a driving unit configured to drive the feeding rotary member;
- and
- a control unit configured to control the driving unit to make the feeding rotary member feed a first sheet, and change a timing at which the feeding rotary member feeds a second sheet following the first sheet based on the acceleration detected by the detection unit after a trailing edge of the first sheet passes the nip portion.
6 more elements
Dependencies are inferred from the claim text.