Patent ID: 8534789

Claim:
A recording apparatus comprising: a carriage having a recording head including plural nozzles for ejecting ink; a moving unit configured to move the carriage having the recording head including the plural nozzles for ejecting ink; a platen including plural plate members connected in a carriage traveling direction and configured to support a recording medium when the plural nozzles of the carriage eject ink onto the recording medium; a transferring unit configured to transfer the recording medium in a direction perpendicular to the carriage traveling direction; a recording control unit configured to record patterns, the number of which corresponds to a number of the plate members, at set plural positions in the carriage traveling direction on a surface of the recording medium supported by the platen to form a carriage traveling direction pattern array while moving the carriage in forward and backward traveling directions, and record the carriage traveling direction pattern array plural times in a transferring direction of the transferring unit by changing relative recording times for recording the carriage traveling direction pattern array in forward and backward traveling directions to form plural transferring direction pattern arrays in the transferring direction of the transferring unit such that a pattern group including a group of the patterns is obtained; a determination unit configured to determine ink ejecting times at the set plural positions in the carriage traveling direction on a surface of the recording medium by selecting an optimal pattern from each of the plural transferring direction pattern arrays recorded at the set plural positions in the carriage traveling direction on the surface of the recording medium; and a time control unit configured to linearly interpolate between the determined ink ejecting times at the set plural positions in the carriage traveling direction on the surface of the recording medium so as to control ink ejecting times for respective intervals between the set plural positions in the carriage traveling direction on the surface of the recording medium based on the linear interpolation between the determined ink ejecting times at the set plural positions in the carriage traveling direction.