Sheet feeding apparatus and image forming apparatus

Patent metadata

Field	Value
Publication number	US-9938097-B2
Application number	US-201615167023-A
Country	US
Kind code	B2
Filing date	May 27, 2016
Priority date	Jun 2, 2015
Publication date	Apr 10, 2018
Grant date	Apr 10, 2018

Abstract

A cut-out is provided in a lower guide so as to permit a return claw to move between a retracted position and a protruded position. Furthermore, an upper surface of the return claw positioned in the protruded position functions as a guide portion that guides an underside of a sheet that has been manually fed.

First claim

What is claimed is:

1. A feeding apparatus, comprising:
a stack portion on which a sheet is stacked;
a first feed member that moves between a first position in which the sheet stacked on the stack portion is fed and a second position where the first feed member that has moved upwards from the first position is positioned, the first feed member configured to feed the sheet to a first conveyance path;
a separation member that separates a sheet fed by the first feed member;
a second feed unit provided above the stack portion that feeds a sheet separate from the stack portion, the sheet being conveyed from the first conveyance path through a second conveyance path;
an extended lower guide portion, provided above the stack portion, configured to guide an underside of the sheet fed by the second feed unit, the extended lower guide portion having a recess formed in a distal edge of the extended lower guide portion; and
a moving member that moves from a retracted position in which the moving member is retracted from the first conveyance path, to a protruded position in which the moving member protrudes into the first conveyance path, when positioned in the protruded position, the moving member providing a moving member guide portion that guides an underside of the sheet fed by the second feed unit, the moving member configured to move from the retracted position to the protruded position through the recess, the moving member guide portion being positioned below the extended guide portion when the moving member guide portion is in the protruded position,
wherein the moving member moves the sheet near the separation member towards an upstream side in a feed direction by moving from the retracted position to the protruded position, and
the second feed unit feeds the sheet while in a state in which the moving member is positioned in the protruded position.

2. The feeding apparatus according to claim 1 ,
wherein the extended lower guide portion is configured to guide the underside of the sheet at a position that is the same as a position of the recess in the feed direction and at a position that is different from a position of the recess in a sheet width direction orthogonal to the feed direction.

3. The feeding apparatus according to claim 1 ,
wherein the moving member positioned in the protruded position is positioned above an uppermost surface of the sheet stacked on the stack portion.

4. The feeding apparatus according to claim 1 , further comprising:
a conveyance member that opposes the separation member and that conveys the sheet,
wherein the separation member moves between a contact position in which the separation member abuts against the conveyance member, and a separated position in which the separation member is separated from the conveyance member.

5. The feeding apparatus according to claim 4 , further comprising:
a control unit that controls the first feed member, the second feed unit, and the moving member,
wherein the control unit feeds the sheet with the second feed unit while in a state in which the first feed member is retracted upwards, the moving member is positioned in the protruded position, and the separation member is separated from the conveyance member.

6. The feeding apparatus according to claim 1 , wherein the second feed unit includes an opening portion, the second feed unit feeding a sheet manually inserted into the opening portion.

7. The feeding apparatus according to claim 1 , further comprising:
an image forming portion that forms an image on the sheet that has been separated by the separation member.

Assignees

• Canon Kk

Inventors

• Murakami Atsushi
• Aoki Daisuke
• Shuhama Yu

Classifications

• G03G15/6511 Primary

  Feeding devices for picking up or separation of copy sheets · CPC title

• B65H3/54

  Pressing or holding devices · CPC title

• G03G2215/00679

  Conveying means details, e.g. roller · CPC title

• B65H3/446 Primary

  alternatively, i.e. according to a fixed sequence · CPC title

• B65H7/00

  Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles · CPC title