Back to results
US 12,184,821 B2Granted
Image reading apparatus to suppress skewing of medium
AssigneeSeiko Epson Corporation
InventorsKazuhito Noda, Keisuke Miyauchi, Kiyotaka Nakamura, Shuichi Kadota, Hidenori Harada
Life of this patent
Estimating the term…
Abstract
A scanner includes the following features. A first driven roller sandwiches a document together with a first drive roller and is capable of rotating in a driven manner. A second driven roller sandwiches a document together with a second drive roller and is capable of rotating in a driven manner. A driving unit rotationally drives the first drive roller and the second drive roller. A transmission unit transmits a rotational force from one of the first driven roller and the second driven roller to another of the first driven roller and the second driven roller.
Claims18
An image reading apparatus, comprising:
- a reading unit configured to read a medium;
- a first drive roller configured to be rotationally driven to transport the medium toward the reading unit;
- a first driven roller configured to sandwich, together with the first drive roller, the medium, and configured to rotate in a driven manner;
- a second drive roller configured to be rotationally driven to transport the medium downstream in a transport direction from the reading unit;
- a second driven roller configured to sandwich, together with the second drive roller, the medium, and configured to rotate in the driven manner;
- a driving unit configured to rotationally drive the first drive roller and the second drive roller;
- a transmission unit configured to transmit a rotational force from one of the first driven roller and the second driven roller to another of the first driven roller and the second driven roller;
- a placement unit at which the medium is placed, the placement unit being located upstream from the first drive roller and the first driven roller in the transport direction;
- an edge guide provided, at the placement unit, movably in a width direction intersecting the transport direction of the medium, the edge guide being configured to come into contact with an end portion of the medium in the width direction;
- a third drive roller rotatably provided at the placement unit;
- and
- a third driven roller rotatably provided at the edge guide and configured to transport the medium in association with rotation of the third drive roller.
9 more elements
An image reading apparatus, comprising:
- a reading unit configured to read a medium;
- a first drive roller configured to be rotationally driven to transport the medium toward the reading unit;
- a first driven roller configured to sandwich, together with the first drive roller, the medium, and configured to rotate in a driven manner;
- a second drive roller configured to be rotationally driven to transport the medium downstream in a transport direction from the reading unit;
- a second driven roller configured to sandwich, together with the second drive roller, the medium, and configured to rotate in the driven manner;
- a driving unit configured to rotationally drive the first drive roller and the second drive roller;
- and
- a transmission unit configured to transmit a rotational force from one of the first driven roller and the second driven roller to another of the first driven roller and the second driven roller,
- wherein a part of the transmission unit overlaps a part of the reading unit when viewed in a width direction intersecting the transport direction of the medium.
6 more elements
An image reading apparatus, comprising:
- a reading unit configured to read a medium;
- a first drive roller configured to be rotationally driven to transport the medium toward the reading unit;
- a first driven roller configured to sandwich, together with the first drive roller, the medium, and configured to rotate in a driven manner;
- a second drive roller configured to be rotationally driven to transport the medium downstream in a transport direction from the reading unit;
- a second driven roller configured to sandwich, together with the second drive roller, the medium, and configured to rotate in the driven manner;
- a driving unit configured to rotationally drive the first drive roller and the second drive roller;
- and
- a transmission unit configured to transmit a rotational force from one of the first driven roller and the second driven roller to another of the first driven roller and the second driven roller,
- wherein a part of the driving unit overlaps another a part of the reading unit when viewed in a width direction intersecting the transport direction of the medium.
6 more elements
Dependencies are inferred from the claim text.