Patent ID: 8205953

Claim:
A printing apparatus comprising: a print head in which a first nozzle array and a second nozzle array, each formed of multiple nozzles for ejecting ink, are positioned by being shifted in a predetermined direction in which the nozzles are arranged so that nozzles of a portion positioned on one side of the first nozzle array and nozzles of a portion positioned on one side of the second nozzle array print on an area of a printing medium, use rate of the nozzles of the portion of the first nozzle array gradually decreases as the nozzles get close to one end of the first nozzle array, and use rate of the nozzles of the portion of the second nozzle array gradually decreases as the nozzles get close to one end of the second nozzle array; a detection unit that detects a positional deviation between the first and second nozzle arrays in the predetermined direction; and a correction unit that corrects a print density of the area of the printing medium corresponding to both of the portions of the first and second nozzle arrays based on the positional deviation, the print density of the area being increased when the positional deviation increases due to the first and second nozzle arrays moving away from each other in the predetermined direction, and the print density of the area being decreased when the positional deviation increases due to the first and second nozzle arrays becoming closer to each other in the predetermined direction.