Patent ID: 6474777
Filing Date: 2002-11-05
Classification: B41J,G06K,H04N

Abstract:
A printing method using a print head on which a plurality of ejection openings for ejecting inks are arranged, said method comprising the steps of:moving said print head to scan in forward and backward directions different from the arranging direction of said plurality of ejection openings, also relatively transporting said printing medium in the direction perpendicular to the scan directions by the quantities less than the arranging width of said plurality of ejection openings, and forming an image on the printing medium by the forward and backward scans at plural times in accordance with pixel arrangements in a complementary relation to the same image area; and making the sum of ratios of the data print quantity in the odd-numbered scans among said plural times of said forward and backward scans to the total data print quantity to said same image area, smaller than the sum of ratios of the data print quantity in the even-numbered scans among said plural times of said forward and backward scans, during said forming of image.