Patent ID: 6779870
Filing Date: 2004-08-24
Classification: B41J

Abstract:
An ink-jet recording apparatus comprising:a plurality of ink-jet heads, each having a plurality of ink ejection nozzles arranged at a predetermined pitch; a recording medium adapted to be moved relative to said ink-jet heads; and a regulating mechanism for regulating a distance between any adjacent two of said ink jet heads; wherein said ink-jet heads are spaced apart from each other at a predetermined distance in a moving direction of said ink-jet heads relative to said recording medium, and said ink ejection nozzles of said ink jet heads are arranged in a direction crossing a direction of relative movement of said recording medium; wherein timings of printing of said ink ejection nozzles of each of said ink jet heads are made different such that dots printed by ink ejected from said ink ejection nozzles are arranged on a same line on the recording medium, when printing is performed on the same line on said recording medium; and wherein an outermost one of said ink ejection nozzles of one of said any adjacent two of said ink-jet heads is adjacent to an outermost one of said ink ejection nozzles of the other of said any adjacent two of said ink-jet heads, and said regulating mechanism performs adjustment such that a distance between said outermost ink ejection nozzles of said any adjacent two of said ink-jet heads is smaller than the predetermined pitch.