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.
Claims9
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 and including a lifting portion configured to perform lifting operation;
- a feeding member configured to feed the sheet stacked on the lifting portion to a conveyance passage of the image forming portion;
- a position detecting means configured to detect movement of the sheet stacked on the lifting portion to a feedable position to the conveyance passage by the feeding member;
- a driving means including a motor and configured to perform the lifting operation of the lifting portion by controlling the motor;
- a rotation detecting means configured to detect rotation of the motor;
- and
- a control means configured to control the lifting operation of the lifting portion,
- wherein the control means determines a factor that the position detecting means 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 detecting means while controlling the driving means to lift up the lifting portion.
Dependencies are inferred from the claim text.