公开(公告)号：US11852996B1

公开(公告)日：2023-12-26

申请号：US18049147

申请日：2022-10-24

申请人： Hewlett-Packard Development Company, L.P.

发明人： Eyal Bachar ,  Gil Bar-Haim ,  Albert Teishev

IPC分类号： G03G15/00 ,  G03G15/10

CPC分类号： G03G15/5025 ,  G03G15/10

摘要： Systems, apparatuses, and methods of fluid delivery for liquid electrophotography printing. A fluid delivery apparatus includes a charged ink source, a supplemental fluid source, a working suspension tank in fluid communication with the charged ink source and the supplemental fluid source, a sensor, and an optical density control unit. The charged ink source is to store a charged ink mixture including charge directors and toner particles. The supplemental fluid source is to store a supplemental fluid including imaging oil. The working suspension tank is to store a working suspension mixture including the charge directors, the toner particles, and the imaging oil. The sensor is to monitor an optical density of print output of the liquid electrophotography printing apparatus. The optical density control unit is to determine whether to supply an uncharged ink mixture to the working suspension tank in response to the monitored optical density indicating electrical fatigue.

公开(公告)号：US20210261890A1

公开(公告)日：2021-08-26

申请号：US16605262

申请日：2018-06-18

申请人： HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

发明人： Eyal Bachar ,  Vladislav Kaploun

IPC分类号： C11D11/00 ,  C11D3/37 ,  C11D3/43 ,  C11D3/20 ,  C11D1/14 ,  C11D17/00 ,  G03G15/11 ,  G03G21/00

摘要： Described herein are methods of cleaning liquid electrophotographic printers and liquid electrophotographic cleaning compositions for use in such methods. The cleaning compositions comprise a resin and a charge director dispersed in a carrier liquid. The cleaning compositions comprise from about 3 wt. % to about 6 wt. % non-volatile solids (NVS). The methods comprise flushing upstream ink feed components of the liquid electrophotographic printer with the cleaning compositions.

公开(公告)号：US08727513B2

公开(公告)日：2014-05-20

申请号：US13664541

申请日：2012-10-31

申请人： Hewlett-Packard Development Company, L.P.

发明人： Eyal Bachar ,  Albert Teishev ,  Kobi Shkuri

IPC分类号： B41J2/175

CPC分类号： B41J2/175 ,  B41J2/17596

摘要： A system for automatic cleaning in a liquid ink printing system includes an ink tank, a pump which is configured pump a carrier liquid from the ink tank as a pressurized carrier liquid flow. A filter is configured to remove particulates from the pressurized carrier liquid flow to produce a filtered carrier liquid flow. A sprayer is configured to receive the filtered carrier liquid flow and spray the filtered carrier liquid flow into an interior of the ink tank. The pump recirculates the filtered carrier liquid flow through the filter and the sprayer. A method for automatic cleaning in a printing system is also included.

摘要翻译： 一种用于在液体油墨印刷系统中自动清洁的系统包括一个墨水罐，一个泵，该泵被构造成将来自墨水罐的载体液体作为加压的载体液体流动。 过滤器构造成从加压的载体液体流中除去微粒以产生过滤的载体液体流。 喷雾器被构造成接收经过滤的载液流并将过滤的载液流喷射到墨罐的内部。 泵将过滤的载液液流再循环通过过滤器和喷雾器。 还包括在打印系统中自动清洁的方法。