发明名称 Liquid jet head unit and liquid jet device
摘要 Provided are a liquid jet head unit and a liquid jet device which are capable of improving precision in aligning nozzle orifices and accordingly printing quality. The liquid jet head includes: a liquid jet head having a nozzle plate provided with nozzle rows constituted of nozzle orifices through which liquid droplets are ejected, and which are arranged side by side; a head case fixed to the liquid jet head at the side of liquid supply ports; and a cover head provided to a liquid-droplet ejecting surface of the liquid jet head. An exposed area in the nozzle plate, which is not covered by the cover head, includes: nozzles provided respectively with water repellent films in peripheries of their nozzle orifices; and nozzles which have the same shape as the former nozzles, and which respectively have non-water repellent portions provided with no water repellent film in peripheries of their nozzle orifices.
申请公布号 US7552992(B2) 申请公布日期 2009.06.30
申请号 US20070955264 申请日期 2007.12.12
申请人 SEIKO EPSON CORPORATION 发明人 OWAKI HIROSHIGE
分类号 B41J2/015 主分类号 B41J2/015
代理机构 代理人
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