Paper feed apparatus
AssigneeMatsushita Graphic Communication Systems, Inc.
InventorsKoji Endo, Makoto Yoshikawa, Kazuo Watanabe
Life of this patent
Estimating the term…
Abstract
The present invention provides pivot 207a of paper edge regulation element 207 that evens up the edges of placed sheets aside from rotation axis 206 of pickup roller 204, forms groove 208 into which rotation axis 206 that has ascended is fitted in paper edge regulation element 207, makes rotation axis 206 fit into groove 208 of paper edge regulation element 207 when pickup roller 204 is lifted to regulate the rotation of paper edge regulation element 207 and makes rotation axis 206 come off groove 208 of paper edge regulation element 207 and become free to rotate when pickup roller 204 is lowered.
Claims12
A paper feed apparatus comprising:
- a pickup roller which is provided above sheets so that said pickup roller is free to ascend/descend on a pivot, and which touches an upper surface of said sheets and sends out said sheets when said pickup roller descends;
- a paper feed roller that sends a sheet sent out by said pickup roller to a transport path;
- and
- a paper edge regulation element that has a pivot different from said pivot of said pickup roller and a groove which regulates a rotation of said paper edge regulation element when said pickup roller ascends and a rotation axis of said pickup roller fits into said groove, and said paper edge regulation element evens up edges of said sheets,
- wherein said paper edge regulation element evens up edges of said sheets, in case where said rotation of said paper edge regulation element is regulated when said pickup roller ascends and a rotation axis of said pickup roller fits into said groove.
A paper feed apparatus comprising:
- a pickup roller that is provided above sheets such that said pickup roller is free to ascend/descend on a pivot and that touches the upper surface of said sheets and sends out said sheets when said a pickup roller descends;
- a paper feed roller that sends the sheet sent out by said pickup roller to a transport path;
- and
- a paper edge regulation element that has a pivot different from said pivot of said pickup roller and a groove which regulates a rotation of said paper edge regulation element when said pickup roller ascends and a rotation axis of said pickup roller fits into said groove, and said paper edge regulation element evens up edges of said sheets,
- wherein said groove is formed so that said rotation axis of said pickup roller fits into said groove to a position where a plane including the pivot of said pickup roller and the rotation axis of said pick up roller becomes parallel to a sheet placement plane, and
- said paper edge regulation element evens up edges of said sheets, in case where said rotation of said paper edge regulation element regulated when said pickup roller ascends and a rotation axis of said pickup roller fits into said groove.
A paper feed apparatus comprising:
- a driving source;
- a pickup roller that is provided above sheets such that said pickup roller is free to ascend/descend on a pivot, and that touches the upper surface of said sheets and sends out said sheets when said a pickup roller is descended by torque transmitted from said driving source;
- a paper feed roller that sends the sheet sent out by said pickup roller to a transport path;
- a paper edge regulation element that has a pivot different from said pivot of said pickup roller and a groove which regulates a rotation of said paper edge regulation element when said pickup roller ascends and a rotation axis of said pickup roller fits into said groove, and said paper edge regulation element evens up edges of said sheets in case where said rotation of said paper edge regulation element regulated when said pickup roller ascends and a rotation axis of said pickup roller fits into said groove;
- and.
- a drive controller that cuts transmission of torque to said pickup roller and lifts said pickup roller, before a rear end of a sheet currently being sent out passes beneath said paper edge regulation element,
- wherein said drive controller ascends said pickup roller, and descends said pickup roller, and then ascends said pickup roller, when the sheet currently being sent out is a final sheet.
Dependencies are inferred from the claim text.