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US 11,530,103 B2Granted
Sheet feeding device, image reading device, and image forming apparatus
AssigneeRicoh Company, Ltd.
InventorsRyohei Morisaki, Shigefumi Soga, Chisa Kato
Life of this patent
Estimating the term…
Abstract
A sheet feeding device includes a roller pair being mutually non-separable; and a roller pair being mutually separable. The sheet feeding device temporarily stops a sheet in a registration position of the non-separable roller pair and then resumes feeding the sheet. The sheet feeding device feeds sheets such that a following sheet reaches the registration position from the separable roller pair after completion of ejection of a preceding sheet.
Claims16
A sheet feeding device comprising:
- a roller pair being mutually non-separable;
- a roller pair being mutually separable;
- and
- a controller configured to temporarily stop a sheet in a registration position of the non-separable roller pair and then resume feeding the sheet such that a following sheet reaches the registration position from the separable roller pair after completion of ejection of a preceding sheet onto a sheet ejection tray, wherein
- the sheet feeding device is configured to feed sheets such that the following sheet reaches the registration position from the separable roller pair after completion of ejection of the preceding sheet, in response to the preceding sheet passing through an image reading position at a reading and feeding speed of a prescribed value or less, and
- the sheet feeding device is configured to feed the preceding sheet at a feeding speed higher than the sheet reading and feeding speed of the prescribed value or less, after a rear end of the preceding sheet passes through the image reading position in a sheet feeding direction.
3 more elements
A sheet feeding device comprising:
- a roller pair being mutually non-separable;
- a roller pair being mutually separable;
- a controller configured to temporarily stop a sheet in a registration position of the non-separable roller pair and then resume feeding the sheet such that a following sheet reaches the registration position from the separable roller pair after completion of ejection of a preceding sheet onto a sheet ejection tray;
- and
- an ejection roller pair that ejects the sheets, wherein
- the non-separable roller pair serves as a pre-reading roller pair initially disposed upstream of an image reading position in a sheet feeding direction, and
- the pre-reading roller pair and the ejection roller pair are driven by the same driving source.
4 more elements
A sheet feeding device comprising:
- a roller pair being mutually non-separable;
- a roller pair being mutually separable;
- an ejection roller pair configured to eject sheets onto a sheet ejection tray;
- and
- a driving source configured to drive both the non-separable roller pair and the ejection roller pair, wherein
- the sheet feeding device is configured to temporarily stop a sheet in a registration position of the non-separable roller pair and then resume feeding the sheet such that a following sheet reaches the registration position from the separable roller pair after the ejection roller pair completes ejection of a preceding sheet.
3 more elements
Dependencies are inferred from the claim text.