Sheet feeding apparatus
AssigneeCanon Kabushiki Kaisha
InventorYuma Inui
Life of this patent
Estimating the term…
Abstract
A sheet feeding apparatus includes a disengagement mechanism to disengage a rotary feeding member and a separation member to be apart from each other, a pressing portion to press an upper face of a sheet supported on a sheet supporting portion, and a detector to detect displacement of the sheet pressed by the pressing portion. A controller executes one mode among a plurality of modes to feed the sheet supported on the sheet supporting portion based on a detection result of the detector. In a first feed mode, a leading edge of the sheet passes a position of a separation portion with the rotary feeding member and the separation member disengaged by the disengagement mechanism. In a second feed mode, the leading edge of the sheet passes the separation portion with the rotary feeding member and the separation member engaged.
Claims18
A sheet feeding apparatus comprising:
- a sheet supporting portion on which a sheet is supported;
- a sheet feed unit configured to feed a sheet supported on the sheet supporting portion in a sheet feeding direction, the sheet feed unit comprising a rotary feeder configured to rotate in contact with the sheet;
- a separator configured to contact the rotary feeder such that a separation portion to separate the sheet fed by the rotary feeder from another sheet is formed between the rotary feeder and the separator;
- a disengager configured to disengage the rotary feeder and the separator to be apart from each other;
- a presser configured to press an upper face of the sheet supported on the sheet supporting portion;
- a detector configured to detect displacement of the sheet in a vertical direction in a case where the presser presses the upper face of the sheet supported on the sheet supporting portion;
- and
- a controller configured to execute one mode among a plurality of modes to feed the sheet supported on the sheet supporting portion based on a detection result of the detector, the plurality of modes including
- a first feed mode in which the sheet is fed such that a leading edge of the sheet in the sheet feeding direction passes a position of the separation portion in a state where the rotary feeder and the separator are disengaged by the disengager, and
- a second feed mode in which the sheet is fed such that the leading edge of the sheet passes the separation portion in a state where the rotary feeder and the separator are engaged.
A sheet feeding apparatus comprising:
- a sheet supporting portion on which a sheet is supported;
- a sheet feed unit configured to feed a sheet supported on the sheet supporting portion in a sheet feeding direction, the sheet feed unit comprising a rotary feeder configured to rotate in contact with the sheet;
- a separator configured to contact the rotary feeder such that a separation portion to separate the sheet fed by the rotary feeder from another sheet is formed between the rotary feeder and the separator;
- a disengager configured to disengage the rotary feeder and the separator to be apart from each other;
- an input controller through which a sheet type of the sheet supported on the sheet supporting portion is input;
- and
- a controller comprising a memory configured to store the sheet type input through the input controller and a processor accessible to the memory, the controller being configured to execute one mode among a plurality of modes to feed the sheet supported on the sheet supporting portion based on the sheet type stored in the memory, the plurality of modes including
- a first feed mode in which the sheet is fed such that a leading edge of the sheet in the sheet feeding direction passes a position of the separation portion in a state where the rotary feeder and the separator are disengaged by the disengager, and
- a second feed mode in which the sheet is fed such that the leading edge of the sheet passes the separation portion in a state where the rotary feeder and the separator are engaged.
A sheet feeding apparatus comprising:
- a sheet supporting portion on which a sheet is supported;
- a sheet feed unit configured to feed a sheet supported on the sheet supporting portion in a sheet feeding direction, the sheet feed unit comprising a rotary feeder configured to rotate in contact with the sheet;
- a separator configured to contact the rotary feeder such that a separation portion to separate the sheet fed by the rotary feeder from another sheet is formed between the rotary feeder and the separator;
- a disengager configured to disengage the rotary feeder and the separator to be apart from each other;
- a sheet sensor configured to detect the sheet at a position downstream of the separation portion in the sheet feeding direction;
- and
- a controller configured to control the disengager such that the sheet feed unit starts feeding the sheet in a state where the rotary feeder and the separator are engaged with each other, and if the sheet sensor does not detect the sheet within a predetermined time after the sheet feed unit has started feeding the sheet, the rotary feeder and the separator are disengaged by the disengager.
Dependencies are inferred from the claim text.