Sheet transport apparatus and image forming apparatus including the same
AssigneeCanon Kabushiki Kaisha
InventorKoji Nojima
Life of this patent
Estimating the term…
Abstract
A sheet transport apparatus includes a pair of rollers for transporting a sheet and a sheet detection device for detecting the sheet transported by the pair of rollers. The sheet detection device includes a flag that is displaceable when urged by the sheet transported by the pair of rollers and a single-chip acceleration sensor attached to the flag to detect the arrival of the sheet. When the sheet is brought into contact with the flag to rotate the flag, the acceleration sensor detects the roll acceleration of the flag so as to determine the timing of stopping the pair of rollers on the basis of a detection signal.
Claims18
A sheet transport apparatus comprising:
- a sheet transport unit configured to transport a sheet;
- and
- a sheet detection unit configured to detect the sheet transported by the sheet transport unit, the sheet detection unit including a displacement member displaceable when urged by the sheet transported by the sheet transport unit and a sheet detection sensor attached to the displacement member and configured to detect the arrival of the sheet,
- wherein the displacement member includes a tilting member that is elastically flexible, and a plurality of sheet detection sensors are attached to the displacement member along the length direction of the displacement member.
A sheet transport apparatus comprising:
- a sheet detection device configured to detect a sheet transported by a pair of rollers,
- wherein the sheet detection device includes:
- a displaceable flag mounted such that the flag intersects the transport surface of the sheet;
- and
- a pressure sensor attached to the flag and configured to detect the arrival of the sheet,
- wherein a plurality of pressure sensors are attached to the flag along the length direction of the flag.
An image forming apparatus comprising:
- a sheet transport unit configured to transport a sheet;
- a sheet detection unit detecting the sheet transported by the sheet transport unit;
- and
- an image forming unit configured to form an image on the sheet transported by the sheet transport unit,
- wherein the sheet detection unit includes a displacement member displaceable when urged by the sheet transported by the sheet transport unit and a sheet detection sensor attached to the displacement member and configured to detect arrival of the sheet,
- wherein the displacement member includes a tilting member that is elastically flexible, and a plurality of detection sensors are attached to the displacement member along the length direction of the displacement member.
An image forming apparatus comprising:
- a sheet detection device configured to detect a sheet transported by a pair of rollers;
- and
- an image forming unit configured to form an image on the sheet transported by the pair of rollers,
- wherein the sheet detection device includes:
- a displaceable flag mounted such that the flag intersects the transport surface of the sheet;
- and
- a pressure sensor attached to the flag and configured to detect the arrival of the sheet,
- wherein a plurality of pressure sensors are attached to the flag along the length direction of the flag.
Dependencies are inferred from the claim text.