Image reading apparatus
AssigneeBrother Kogyo Kabushiki Kaisha
InventorNobuhiko Suzuki
Life of this patent
Estimating the term…
Abstract
An image reading apparatus includes: a first feed path; a second feed path; a detection unit; a feed system; an image read unit; a feed path switching unit; a drive source; a drive force transmission unit; a control unit that has a first feed mode that feeds a document from the first feed path to a document discharge portion and a second feed mode that feeds a document from the first feed path to the second feed path, and shifts a current feed mode from the second feed mode to the first feed mode; and an image modification unit that modifies the image read by the image read unit based on drive loss information acquired with regard to a drive loss of the drive force transmission unit occurring at the time of switching of the feed mode by the control unit.
Claims14
An image reading apparatus comprising:
- a first feed path connected to a inlet from an outlet via a scanning position;
- a second feed path whose one end is connected to the first feed path at a connecting position on a feed-direction downstream side of the scan point;
- a detection unit that detects a presence or absence of a document;
- a feed system provided at least on the first feed path;
- an image scanning unit that scans an image of a document fed by the feed system at the scanning position;
- a switching unit that is provided at the connecting position and that switches a document feed path to either the second feed path or to an outlet;
- a drive source that is controlled so as to be rotary-drivable in both forward and backward directions and that applies a drive force to at least the feed system and the switching unit;
- a drive force transmission unit that transmits a drive force to switch the document feed path to the document discharge path side from the drive source to the switching unit based on a one-direction rotation of the drive source, transmits a drive force to switch the document feed path to the second feed path side from the drive source to the switching unit based on an other-direction rotation of the drive source, and transmits a document-feed-direction drive force irrespective of the rotation direction of the drive source;
- a control unit that has a first mode that feeds a document from the first feed path to the document discharge portion by rotating the drive source in one direction and a second mode that feeds a document from the first feed path to the second feed path by rotating the drive source in the other direction, and switches a current mode from the second mode to the first mode by controlling the rotation direction of the drive source based on a detection result by the detection unit during the document fed in the second mode;
- and
- an image modification unit that modifies the image read by the image read unit based on drive loss information acquired with regard to a drive loss of the drive force transmission unit occurring at a time of switching the current feed mode by the control unit.
An image reading apparatus that is operable in a first mode that guides a document from an input to an endpoint located above the input through a scan point and a second mode that guides the document during the document fed from the endpoint to the input through the scan point, the image reading apparatus comprising:
- a determination unit that determines whether or not a document processing is operable, during the document fed in the first mode;
- a control unit that switches a current mode from the first mode to the second mode when the document processing is unoperable in the first mode;
- and
- a detection unit that detects a length of the document,
- wherein the determination unit determines whether or not the document processing is operable based on a detection result by the detection unit.
Dependencies are inferred from the claim text.