Patent ID: 8075083

Claim:
A recording apparatus comprising: a scanning unit configured to scan a recording medium and having a recording head configured to discharging ink; a conveyance roller configured to perform a conveyance operation of conveying the recording medium between a scanning by the recording head and a next scanning; a controlling unit controlling the recording head to record a first pattern group for detecting an error in conveyance amount of the conveyance operations of N times, N being an integral number equaling to or more than 2, from a predetermined position of the conveyance roller, and a second pattern group for detecting an error in conveyance amount of the conveyance operations of N−1 times from the predetermined position; a detecting unit configured to detect the error in conveyance amount of the conveyance operations of N times from the first pattern group, and to detect the error in conveyance amount of the conveyance operations of N−1 times from the second pattern group; and a correcting unit configured to correct an error in conveyance amount from a position after the conveyance operations of N−1 times from the predetermined position to a position after the conveyance operations of N times from the predetermined position, based on the error in the conveyance amount of the conveyance operations of N times, detected from the first pattern group by the detecting unit, and the error in the conveyance amount of the conveyance operations of N−1 times, detected from the second pattern group by the detecting unit.