Image forming apparatus
AssigneeCanon Kabushiki Kaisha
InventorsHiroki Sasaki, Yoshiteru Kaida
Life of this patent
Estimating the term…
Abstract
An image forming apparatus includes a stacking portion including a lifting portion, a feeding member feeding a sheet stacked on the lifting portion to a conveyance passage, a position detector detecting movement of the sheet stacked on to a feedable position to the conveyance passage, a driver including a motor and performing the lifting operation of the lifting portion, a rotation detector detecting rotation of the motor, and a controller. The controller determines a factor that the position detector does not detect the movement of the sheet stacked on the lifting portion to the feedable position within a predetermined time based on a detection result of the rotation detector while controlling the driver to lift up the lifting portion.
Claims11
An image forming apparatus provided with an image forming portion for forming an image onto a sheet, the image forming apparatus comprising:
- a stacking portion on which the sheet is stacked, the stacking portion including a lifting portion;
- a feeding member configured to feed the sheet stacked on the lifting portion toward the image forming portion;
- a motor configured to perform a lifting operation to lift the lifting portion so that the sheet stacked on the lifting portion is moved toward a feedable position in which the feeding member can feed the sheet stacked on the lifting portion;
- a position detecting sensor configured to detect that the sheet is in the feedable position;
- a rotator configured to be rotated by the motor;
- a rotation detector configured to detect rotation of the rotator;
- and
- a controller configured to determine a factor in which the position detecting sensor does not detect the sheet in the feedable position within a predetermined time, based on a detection result of the rotation detector during the lifting operation.
An image forming apparatus provided with an image forming portion for forming an image onto a sheet, the image forming apparatus comprising:
- a stacking portion on which the sheet is stacked, the stacking portion including a lifting portion;
- a feeding member configured to feed the sheet stacked on the lifting portion toward the image forming portion;
- a transmission mechanism including a motor and a gear configured to transmit a driving force of the motor to the lifting portion, wherein the motor is configured to perform a lifting operation to lift the lifting portion so that the sheet stacked on the lifting portion is moved toward a feedable position in which the feeding member can feed the sheet stacked on the lifting portion;
- a position detecting sensor configured to detect the sheet stacked in the feedable position;
- a rotator configured to be rotated with the gear by the motor;
- a rotation detector configured to detect rotation of the rotator;
- and
- a controller,
- wherein in a case where the position detecting sensor does not detect the sheet in the feedable position within a predetermined time during the lifting operation, the controller determines information to be displayed on a display panel based on a detection result of the rotation detector, and
- wherein the information is related to a factor in which the position detecting sensor does not detect the sheet in the feedable position within the predetermined time.
Dependencies are inferred from the claim text.