Patent ID: 7896566
Filing Date: 2011-03-01
Classification: B41J

Abstract:
1. A printing apparatus for printing an image on a print medium by repetitively performing a scan operation that scans a print head in a scan direction and a transport operation that transports the print medium in a transport direction crossing the scan direction, the printing apparatus comprising: first transport means for transporting the print medium, the first transport means being installed upstream of the print head with respect to the transport direction; second transport means for transporting the print medium, the second transport means being installed downstream of the print head with respect to the transport direction; printing means for printing on the print medium a test pattern used to detect a transporting error in a second transporting operation, the second transporting operation transporting the print medium in which a transporting state is between a transporting state of a first transporting operation and a transporting state of a third transporting operation, the first transporting operation transporting the print medium by the first transport means and the second transport means, the third transporting operation transporting the print medium not by the first transport means but by the second transport means; and correction means for correcting a transport amount in the second transporting operation based on a printed result of the test pattern, wherein the test pattern includes a plurality of first patterns printed before the second transporting operation and a plurality of second patterns printed after the second transporting operation, and wherein the print medium is transported by the first transporting operation between printing operations for the plurality of first patterns.