Patent ID: 7770996

Claim:
A transport method that transports a medium by causing a transport roller to rotate based on a corrected target transport amount, after correcting the target transport amount that is targeted based on a correction value, comprising: printing a first pattern on a medium; printing a second pattern after the medium has been transported by causing the transport roller to rotate by a rotation amount of less than one rotation from a rotation position of the transport roller at a time of printing the first pattern; printing a third pattern after the medium has been transported by causing the transport roller to rotate by a rotation amount of one rotation from a rotation position of the transport roller at a time of printing the first pattern; printing a fourth pattern after the medium has been transported by causing the transport roller to rotate by a rotation amount of one rotation from a rotation position of the transport roller at a time of printing the second pattern; calculating a first correction value based on the first pattern and the third pattern; calculating a second correction value based on the second pattern and the fourth pattern; transporting the medium by correcting the target transport amount based on the first correction value when a relative position of the medium with respect to the transport roller is in a predetermined range between the relative position at a time of printing the first pattern and the relative position at a time of printing the third pattern; and transporting the medium by correcting the target transport amount based on the second correction value when the relative position is in a different range, which is in a position in which the transport roller has been rotated by a rotation amount of less than one rotation from the predetermined range.