READING DEVICE, IMAGE FORMING APPARATUS, AND READING DEVICE CONTROL METHOD
First Claim
1. A reading device comprising:
- an operation panel for accepting a setting;
a reading unit for reading a document that passes through a reading position; and
a conveyance unit including;
a sheet feed roller for feeding out a document set on a document tray;
a first conveyance path ranging from the sheet feed roller to the reading position;
a detection part provided on the first conveyance path and serving for detecting whether or not the document is present;
a pair of reverse-rotation rollers which rotate forward while nipping the document and then stop in a state discharging a part of the document to outside, and thereafter rotate reverse;
a second conveyance path ranging from the reading position to the pair of reverse-rotation rollers;
a third conveyance path which has one end connected to the first conveyance path and the other end connected to the second conveyance path and which allows the switched-back document to pass therethrough and be fed back to upstream side of the reading position; and
a conveyance control section for controlling document conveyance, whereinthe pair of reverse-rotation rollers rotate reverse to feed the document onto the third conveyance path,the operation panel accepts double-sided reading of the document, and application of a cutout document mode for reading a cutout document which has a cutout part at its rear end in a document conveyance direction, the cutout part passing through a detection area of the detection part,in a case of double-sided reading of the document,with the cutout document mode unapplied,the conveyance control section stops the pair of reverse-rotation rollers at a time point when the document has been conveyed to a predetermined reference distance since a rear-end passage time point that is a time point when the detection part having so far been detecting a document presence has detected a document absence, and thereafter the conveyance control section starts reverse rotation of the pair of reverse-rotation rollers,with the cutout document mode applied,the conveyance control section stops the pair of reverse-rotation rollers at a time point when the document has been conveyed to a distance resulting from adding an additional distance, which is predetermined or determined based on a recognized cutout width in the document conveyance direction, to the reference distance since the rear-end passage time point, and thereafter the conveyance control section starts reverse rotation of the pair of reverse-rotation rollers.
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Accused Products
Abstract
A reading device includes a conveyance control section for controlling document conveyance. In a case of double-sided reading of a document and with a cutout document mode applied, the conveyance control section stops a pair of reverse-rotation rollers at a time point when the document has been conveyed to a distance resulting from adding an additional distance, which is predetermined or determined based on a recognized cutout width in the document conveyance direction, to a reference distance since a time point of passage of a rear end of a document-detecting detection part, and thereafter start reverse rotation of the pair of reverse-rotation rollers.
37 Citations
9 Claims
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1. A reading device comprising:
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an operation panel for accepting a setting; a reading unit for reading a document that passes through a reading position; and a conveyance unit including;
a sheet feed roller for feeding out a document set on a document tray;
a first conveyance path ranging from the sheet feed roller to the reading position;
a detection part provided on the first conveyance path and serving for detecting whether or not the document is present;
a pair of reverse-rotation rollers which rotate forward while nipping the document and then stop in a state discharging a part of the document to outside, and thereafter rotate reverse;
a second conveyance path ranging from the reading position to the pair of reverse-rotation rollers;
a third conveyance path which has one end connected to the first conveyance path and the other end connected to the second conveyance path and which allows the switched-back document to pass therethrough and be fed back to upstream side of the reading position; and
a conveyance control section for controlling document conveyance, whereinthe pair of reverse-rotation rollers rotate reverse to feed the document onto the third conveyance path, the operation panel accepts double-sided reading of the document, and application of a cutout document mode for reading a cutout document which has a cutout part at its rear end in a document conveyance direction, the cutout part passing through a detection area of the detection part, in a case of double-sided reading of the document, with the cutout document mode unapplied, the conveyance control section stops the pair of reverse-rotation rollers at a time point when the document has been conveyed to a predetermined reference distance since a rear-end passage time point that is a time point when the detection part having so far been detecting a document presence has detected a document absence, and thereafter the conveyance control section starts reverse rotation of the pair of reverse-rotation rollers, with the cutout document mode applied, the conveyance control section stops the pair of reverse-rotation rollers at a time point when the document has been conveyed to a distance resulting from adding an additional distance, which is predetermined or determined based on a recognized cutout width in the document conveyance direction, to the reference distance since the rear-end passage time point, and thereafter the conveyance control section starts reverse rotation of the pair of reverse-rotation rollers. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A reading device control method comprising the steps of:
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reading a document that passes through a reading position; making a sheet feed roller feed out a document set on a document tray; providing, as a first conveyance path, a conveyance path ranging from the sheet feed roller to the reading position; providing a detection part on the first conveyance path to detect whether or not the document is present; making a pair of reverse-rotation rollers rotate forward while nipping the document and then stop in a state discharging a part of the document to outside, stopped in this state, and thereafter rotate reverse; providing, as a second conveyance path, a conveyance path ranging from the reading position to the pair of reverse-rotation rollers; providing, as a third conveyance path, a conveyance path which has one end connected to the first conveyance path and the other end connected to the second conveyance path and which allows the switched-back document to pass therethrough and be fed back to upstream side of the reading position; and feeding the document onto the third conveyance path under a condition that the pair of reverse-rotation rollers are rotating reverse; accepting double-sided reading of the document, and application of a cutout document mode for reading a cutout document which has a cutout part at its rear end in a document conveyance direction, the cutout part passing through a detection area of the detection part; in a case of double-sided reading of the document and with the cutout document mode unapplied, making the pair of reverse-rotation rollers stop at a time point when the document has been conveyed to a predetermined reference distance since a rear-end passage time point that is a time point when the detection part having so far been detecting a document presence has detected a document absence, and thereafter starting the reverse rotation of the pair of reverse-rotation rollers; and in a case of double-sided reading of the document and with the cutout document mode applied, making the pair of reverse-rotation rollers stop at a time point when the document has been conveyed to a distance resulting from adding an additional distance, which is predetermined or determined based on a recognized cutout width in the document conveyance direction, to the reference distance since the rear-end passage time point, and thereafter starting the reverse rotation of the pair of reverse-rotation rollers.
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Specification