发明名称 Ink jet printing appartus for identifying ejection error
摘要 This invention provides a printing apparatus which has an ink ejection head capable of forming an image at high resolution and still can reliably identify a location where an ink ejection error has occurred without using an expensive image reading device. This printing apparatus has a distance adjusting device to change a distance between the ink ejection head and the print medium, and a controller to set a plurality of different distances by controlling the distance adjusting device. The controller controls the distance adjusting device to selectively set either a first distance that produces a normal printed image having within a predetermined range a landing error on the print medium of ink droplets ejected from the print head or a second distance that produces a landing error greater than the predetermined range.
申请公布号 US6783201(B2) 申请公布日期 2004.08.31
申请号 US20010884087 申请日期 2001.06.20
申请人 CANON KABUSHIKI KAISHA 发明人 NINOMIYA TAKAYUKI
分类号 B41J2/01;B41J25/308;(IPC1-7):B41J25/308;B41J23/00;B41J29/393 主分类号 B41J2/01
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