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    • 1. 发明授权
    • Recirculating ink system for inkjet printing
    • 喷墨印刷循环墨水系统
    • US08444259B2
    • 2013-05-21
    • US12808303
    • 2008-12-17
    • Simon Bennett
    • Simon Bennett
    • B41J2/18B41J2/175
    • B41J2/18B41J2/17566
    • An ink reservoir (10) for an ink recirculating system for supplying ink to an inkjet printhead (14) comprises a first chamber (16) for receiving ink from a main ink supply (12) and having a printhead outlet (24) for supplying ink to a printhead (14); and a second chamber (18) in fluid communication with the first chamber for receiving ink from the first chamber in excess of a predetermined height in the first chamber determined by the position of a transfer outlet (20), the second chamber having a printhead inlet (30) for receiving ink recirculated from the printhead and having a return outlet (40) for returning to the main ink (12) supply ink in excess of a predetermined height in the second chamber determined by the position of the return outlet (40), the transfer outlet (20), in use, being vertically above the return outlet (40). In use of the reservoir, because the transfer outlet (20) of the first chamber is vertically above the return outlet (40) of the second chamber, this produces a pressure differential that causes flow of ink from the first chamber (16) to the printhead (14) via the printhead outlet (24), through the printhead (14), with unused ink returned to the second chamber (18) via the printhead inlet (30). The unused ink is then returned to the main supply (12) for reuse, thus circulating surplus ink through the system. The arrangement thus uses gravity to produce the ink flow through the printhead (14), without the need for pumps, level sensors, valves etc. The ink reservoir is self-regulating, with the ink heights in the first and second chambers, and hence the pressure differential, determined by the relative heights of the two outlets.
    • 一种用于将油墨供应到喷墨打印头(14)的油墨再循环系统的储墨器(10)包括用于从主墨水供应源(12)接收墨水并具有用于供应墨水的打印头出口(24)的第一室(16) 到打印头(14); 和与所述第一室流体连通的第二腔室(18),用于在所述第一腔室中从所述第一腔室中接收超过预定高度的墨水,所述第一腔室由所述输送口(20)的位置确定,所述第二腔室具有打印头入口 (30),用于接收从所述打印头再循环的油墨并且具有用于返回到所述主油墨(12)的返回出口(40)在由所述返回出口(40)的位置确定的所述第二室中提供超过预定高度的油墨, ,所述传送出口(20)在使用中垂直地位于所述返回出口(40)上方。 在储存器的使用中,由于第一室的传送出口(20)垂直地位于第二室的返回出口(40)的上方,所以产生压力差,导致墨从第一室(16)流到 打印头(14)经由打印头出口(24)穿过打印头(14),未使用的墨水经由打印头入口(30)返回到第二腔室(18)。 然后将未使用的油墨返回到主供应源(12)以供重新使用,从而使多余的油墨循环通过系统。 因此,该布置使用重力来产生通过打印头(14)的墨水流,而不需要泵,液位传感器,阀门等。墨水储存器是自调节的,墨水高度位于第一和第二腔室中,因此 压差由两个出口的相对高度决定。