Patent ID: 7819495
Filing Date: 2010-10-26
Classification: B41J

Abstract:
1. A print method that prints visible information by ejecting ink droplets from a print head onto a printed object that is rotated by a rotational driving unit, the print method comprising: carrying out impact position correction that corrects displacements in impact positions of the ink droplets to convert the visible information to impact position-corrected polar coordinate data when converting the visible information from biaxial perpendicular coordinate data to polar coordinate data; generating ink ejection data based on the impact position-corrected polar coordinate data; and printing the visible information by ejecting the ink droplets onto the printed object based on the ink ejection data, wherein the ink ejection data is generated by carrying out dot density correction that adds a correction weighting calculated in accordance with a number of dots per unit area to a luminance value of each dot in the impact position-corrected polar coordinate data.