Patent ID: 6761425
Filing Date: 2004-07-13
Classification: B41J

Abstract:
A printing apparatus using a printing means that executes printing on a print medium transported along a transportation path, said apparatus comprising:upstream transporting means including a transportation roller driven by a driving means and a pinch roller, arranged upstream of the printing means in the transportation path for transporting the print medium by rotating while sandwiching the print medium at a nip portion; downstream transporting means arranged downstream of the printing means in the transportation path for transporting the print medium; information obtaining means for obtaining nip position information, said information obtaining means comprising rotation state detecting means for detecting a state of rotation of said transportation roller in a state in which the print medium is sandwiched between said transportation roller and said pinch roller at the nip portion thereof and in a state in which the print medium has passed out from the nip portion, and measuring means for measuring an interval between a predetermined reference position located upstream of the nip portion in the transportation path and the nip portion, on the basis of a result of detection by said rotation state detecting means; and storage means for storing the nip position information obtained by said information obtaining means.