Image forming apparatus, and abnormality determination method

An image forming apparatus, comprising:

• a drive motor configured to drive conveying rollers that convey a sheet fed from a sheet storing portion toward an image forming portion that forms an image on the sheet;
• a transmission switching portion configured to switch between transmission and non-transmission of a driving force of the drive motor to a lift mechanism that raises sheets (P) stored in the sheet storing portion;
• a conveying processing portion configured to execute a lift raising process of driving the drive motor and switching the transmission switching portion to a transmission state in which a driving force of the drive motor is transmitted to the lift mechanism while an image forming process for forming an image on a sheet is not being executed by the image forming portion;
• and
• an abnormality determination processing portion configured to determine a presence or absence of a sheet conveying abnormality on a conveying path along which a sheet is conveyed by the conveying rollers in a case in which the lift raising process is executed by the conveying processing portion in a state in which an image forming process for forming an image on a sheet is not executed by the image forming portion.