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公开(公告)号:US09469098B2
公开(公告)日:2016-10-18
申请号:US14328524
申请日:2014-07-10
发明人: Angus North , Philip Palma , Brian Brown , Duncan McRae , Jognandan Prashar , Mile Jurevic , Sam Mallinson , Geordie McBain , Chia-An Lin , Sam Myers , Jeffrey Tsang , Benjamin Powell
CPC分类号: B41J2/04553 , B41J2/01 , B41J2/04586 , B41J2/07 , B41J2/155 , B41J2/16579 , B41J2/16585 , B41J2/21 , B41J11/001 , B41J2002/16529 , B41J2002/16591
摘要: A method of printing from a fixed inkjet printhead having a plurality of ink planes. The method includes the steps of: feeding a print medium past the printhead in a media feed direction, the media feed direction defining relative upstream and downstream sides of the printhead; printing an image onto the print medium, the image being defined by image data; and printing a keep-wet pattern onto the print medium from each ink plane of the printhead, the keep-wet pattern being defined by a plurality of dots printed at a frequency sufficient to maintain hydration of each nozzle in the printhead. A first keep-wet pattern from a first ink plane is printed at a higher frequency than a second keep-wet pattern from a second ink plane, the first ink plane being furthest upstream in the printhead.