Patent ID: 6779872
Filing Date: 2004-08-24
Classification: G06K

Abstract:
A jet recording method of performing a recording operation with dots each formed on a recording medium with ink ejected from a recording head including a plurality of ejection ports, said method comprising the steps of:assigning, based on image data, one of the ejection ports for ejecting ink to form a dot for building a plurality of lines and which numbered scanning in which ink is ejected from the one of ejection ports, to said dot, when the recording operation is performed so as to build the plurality of lines with the dots formed by plural times of scanning achieved by the recording head, the order of the ejection ports and the scannings having been assigned in such a manner that a plurality of dots for building the plurality of lines are formed by ejecting the ink from the ejection ports different from each other in accordance with an order of plural times of scannings different from each other, and the order of the scannings to be effected for ink ejection for building the lines with the dots having been assigned on the basis of an order of scannings for the dots to which the assignment has been already executed, on a specific line having the dots belonging thereto while the dots are arranged for building the lines, and on a row of dots located in the direction of extension of the lines, performing the plural times of scannings with the recording head, and forming the dots to which the order of scanning is assigned by ejecting the ink from the ejection ports assigned on completion of each of the plural times of scannings, and combining a plurality of lines continuously extending in the direction of arrangement of the lines to build a set of lines, said step of assignment meeting the conditions as recited below in paragraphs a), b), and c): a) two dots located adjacent to each other on each line within a range defined by the set of lines are formed in accordance with the order of scannings different from each other; b) dots located adjacent to each other in the direction of arrangement of the plurality of lines within a range defined by said set of lines are formed in accordance with the order of scannings different from each other; and c) dots not defined in the preceding paragraphs a) and b) are formed in accordance with the order of main scannings different from those for each dot located directly before each of the set of lines.