发明名称 Image forming apparatus
摘要 An image forming apparatus includes a recording head including a plurality of printing elements each of which offsets at least in a auxiliary-scanning direction one another and ejects droplets toward a recording medium. The image forming apparatus further includes a main scanning unit configured to scan the recording head, relative to the recording medium, in a main scanning direction perpendicular to the auxiliary-scanning direction. The image forming apparatus still further includes a auxiliary-scanning unit configured to scan the recording head, relative to the recording medium, in a main scanning direction perpendicular to the auxiliary-scanning direction. The image forming apparatus still yet further includes a controller configured to control the printing head, the main scanning unit and the auxiliary-scanning unit to form dots in rows arranged in the auxiliary-scanning direction at a first predetermined interval, and columns arranged in the main scanning direction at a second predetermined interval while performing main scans and sub-scans repeatedly. The controller controls the printing head, the main scanning unit and the auxiliary-scanning unit to form first dots in an area of the printing medium at first alternate columns by a first main scan, and to form second dots in the area by a second main scan at second alternate columns different from the first alternate columns. The second dots are shifted, relative to the first dots, a first predetermined distance smaller the first predetermined interval.
申请公布号 US8210645(B2) 申请公布日期 2012.07.03
申请号 US20080241792 申请日期 2008.09.30
申请人 UEDA MASASHI;MAEHIRA HIROTOSHI;BROTHER KOGYO KABUSHIKI KAISHA 发明人 UEDA MASASHI;MAEHIRA HIROTOSHI
分类号 B41J2/165 主分类号 B41J2/165
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