Patent ID: 8851611
Filing Date: 2014-10-07
Classification: B41J

Abstract:
1. A correction information determination method for controlling a recording apparatus including a first conveyance unit configured to convey a recording medium in a conveyance direction, a recording unit arranged downstream of the first conveyance unit in the conveyance direction and configured to record an image on the recording medium, and a second conveyance unit arranged downstream of the recording unit in the conveyance direction and configured to rotate in synchronization with the first conveyance unit and to convey the recording medium, the correction information determination method comprising: via the recording apparatus, causing the first conveyance unit to rotate by a predetermined amount and recording patterns for measuring a conveyance distance when a conveyance state is changed from a state in which both the first and second conveyance units convey the recording medium to a state in which the second conveyance unit conveys the recording medium after a trailing edge of the recording medium passes the first conveyance unit and the first conveyance unit releases the recording medium; acquiring a conveyance start rotation phase of the first conveyance unit, the conveyance start rotation phase used when the conveyance state is changed by causing the first conveyance unit to rotate by the predetermined amount, to determine a conveyance start rotation phase of the first conveyance unit, the conveyance start rotation phase used when the conveyance state is changed during recording by the recording apparatus; and determining, based on the conveyance distance measured based on the recording patterns, correction information about a rotation amount of the first conveyance unit, the rotation amount used when the conveyance state is changed during recording by the recording apparatus.