Patent ID: 8387975

Claim:
A sheet conveying apparatus comprising: a conveying portion configured to convey a sheet; a rotation detection portion rotatably provided and having an abutting portion which abuts against a leading end of the sheet conveyed by the conveying portion at a waiting position, wherein the rotation detection portion is rotated in a predetermined rotational direction by being pushed by the leading end of the conveyed sheet; a sensor portion detecting the conveyed sheet based on a rotational position of the rotation detection portion; a rotation transmission portion configured to transmit a rotational driving force to the rotation detection portion to rotate the rotation detection portion in the predetermined rotational direction after the rotation detection portion is rotated by being pushed by the leading end of the conveyed sheet; and an urging unit configured to apply an urging force to the rotation detection portion, wherein after the rotation detection portion is rotated by the rotational driving force of the rotation transmission portion, the urging unit applies the urging force to the rotation detection portion so that the rotation detection portion comes into contact with a surface of the sheet, thereafter the rotation detection portion is returned to the waiting position along with the passage of the rear end of the sheet through the rotation detection portion.