| 摘要 |
PROBLEM TO BE SOLVED: To provide a printing apparatus which hardly generates streak-like printing fluctuation on a recording medium. SOLUTION: The printing apparatus includes: p pieces of liquid delivering heads which are equipped with a liquid delivering hole group consisting of n pieces of liquid delivering holes and n pieces of pressing parts, and in which the liquid delivering holes are arranged two-dimensionally in one direction at equal intervals d; a conveying means; and a controlling unit for controlling the pressing parts so that a pixel group arranged in one direction in parallel at equal intervals d to a printing medium by liquid droplets delivered from one liquid delivering head is formed, the pixel groups formed by p pieces of the liquid delivering heads are formed in one direction by shifting d/p by d/p to form one line consisting of pixels parallel in one direction. In the printing apparatus, the liquid delivering heads are arranged in a direction orthogonal to one direction, and at least one of differences of the timeΔT<SB>2</SB>-ΔT<SB>m</SB>from an initial delivering signal among the delivering signals for forming one line to the delivering signals after the second delivering signal, is made different. COPYRIGHT: (C)2010,JPO&INPIT
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