Back to results
US 8,894,058 B2Granted
Sheet feeder and image forming apparatus using the same
AssigneeRicoh Company, Ltd.
InventorHiroyuki Seki
Life of this patent
Estimating the term…
Abstract
A sheet feeder including a sheet container on which sheets are placed, a transfer roller to transfer the sheets to an image forming unit via a transfer path; a friction pad to transfer the sheets together with the transfer roller; and a movable portion provided on the transfer path to alter a direction of the transfer path based on the sheets.
Claims6
A sheet feeder comprising:
- a sheet container on which sheets are placed;
- a transfer roller;
- an opposing roller facing the transfer roller to transfer a sheet that has advanced between the transfer roller and the opposing roller;
- a sheet thickness detector to measure a thickness of the sheet;
- and
- a roller guide driver to tilt the opposing roller based on the thickness of the sheet detected by the sheet thickness detector,
- wherein the opposing roller tilts at an angle, using the roller guide driver, to a surface of the transfer roller determined by the thickness of the sheet, using the sheet thickness detector, that has advanced between the transfer roller and the opposing roller.
4 more elements
A sheet feeder comprising:
- a sheet container on which sheets are placed;
- a transfer roller;
- an opposing roller facing the transfer roller to transfer a sheet that has advanced between the transfer roller and the opposing roller;
- a memory device to store property information about the sheets placed in the sheet container;
- a reading device to read the property information about the sheets placed in the sheet container from the memory device;
- and
- a roller guide driver to tilt the opposing roller based on the property information stored in the memory device.
4 more elements
A sheet feeder comprising:
- a sheet container on which sheets are placed;
- a transfer roller;
- an opposing roller facing the transfer roller to transfer a sheet that has advanced between the transfer roller and the opposing roller;
- a roller guide driver to tilt the opposing roller;
- and
- a sheet detector to detect a timing with which the sheet is transferred by the transfer roller and passes through the transfer roller and the opposing roller,
- wherein the roller guide driver tilts the opposing roller based on the timing detected by the sheet detector.
4 more elements
Dependencies are inferred from the claim text.