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公开(公告)号：WO2020117220A1
公开(公告)日：2020-06-11
申请号：PCT/US2018/063918
申请日：2018-12-04
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Abstract: An example printing apparatus includes a reservoir to contain a printing agent. The printing apparatus further includes a recovery port to receive connection of a recovery vessel and to communicate flow of the printing agent from the reservoir to the recovery vessel during a recovery operation. The printing apparatus further includes a recovery pump to pump the printing agent from the reservoir through the recovery port to the recovery vessel during the recovery operation. The printing apparatus further includes a vacuum pump at the reservoir to reduce pressure in the reservoir to below atmospheric pressure during the recovery operation to draw unrecovered printing agent away from the recovery port when the recovery vessel is removed from the recovery port.
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公开(公告)号：WO2020032968A1
公开(公告)日：2020-02-13
申请号：PCT/US2018/046191
申请日：2018-08-10
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： ARNOLD, Christopher John
IPC: B41J2/175 , B41F31/02 , B41J29/377
Abstract: Some examples include a print substance reservoir for a printing system including a housing to be arranged within a printing device, the housing having an interior for containing a print substance and an exterior, an active vent valve to allow gases to travel from the interior to the exterior when the inlet is receiving the print substance, the active vent valve electrically energizable and de-energizable in response to signals corresponding to the transfer of the print substance into the housing, a passive inlet valve to open to allow air to enter the interior during removal of the print substance from the reservoir, the passive inlet valve biased to a closed position, and a passive pressure relief valve to open when pressure within the interior is greater than a predetermined pressure limit, the passive pressure relief valve biased to a closed position.
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公开(公告)号：WO2020117214A1
公开(公告)日：2020-06-11
申请号：PCT/US2018/063885
申请日：2018-12-04
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Abstract: In one example in accordance with the present disclosure, a fluid extraction system is described. The fluid extraction system includes an interface to fluidically and electrically couple a removable extraction reservoir to a printing device. A return line of the fluid extraction system is to connect the interface and a reservoir of the printing device. The fluid extraction system includes a switch to 1) responsive to attachment of the removable extraction reservoir to the printing device, open the return line to direct fluid form the reservoir to the interface and 2) responsive to removal of the removable extraction reservoir from the printing device, close the return line.
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公开(公告)号：WO2020068088A1
公开(公告)日：2020-04-02
申请号：PCT/US2018/053178
申请日：2018-09-27
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： SAUER, Russell Sterling , WILLIAMS, Kenneth , SCHALK, Wesley R. , ARNOLD, Christopher John
IPC: B41J29/393 , B41J2/175 , B41J2/18
Abstract: An extraction pump of a printing device fluidically connected to a reservoir of the printing device is set to a specified rotational velocity. A pulse-width modulation (PWM) value of the extraction pump correspondingly increases until the extraction pump rotates at the specified rotational velocity. While the power of the extraction pump is monitored, a power of a supply pump of the printing device fluidically connected between the extraction pump and the reservoir is continually increased; the power of the extraction pump correspondingly decreases to maintain rotation of the extraction pump at the specified rotational velocity. Responsive to the power of the extraction pump decreasing to a characterized value for the specified rotational velocity, the power of the supply pump ceases being increased.
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公开(公告)号：WO2019139568A1
公开(公告)日：2019-07-18
申请号：PCT/US2018/013080
申请日：2018-01-10
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Abstract: In example implementations, a storage apparatus is provided. The storage apparatus includes a sealed reservoir partially filled with a print agent. A float is partially submerged in the print agent. A weight is coupled to a submerged portion of the float. A vent is coupled to the float and an opening in the sealed reservoir. A valve is coupled to an unsubmerged portion of the float.
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Patent Agency Ranking
公开(公告)号：WO2020117206A1
公开(公告)日：2020-06-11
申请号：PCT/US2018/063735
申请日：2018-12-04
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： SCHALK, Wesley R. , WILLIAMS, Kenneth , ARNOLD, Christopher John
IPC: B41J2/175
Abstract: A method of recirculating printing fluid that includes with a first pump upstream of an internal reservoir, pumping printing fluid into the reservoir and with a second pump downstream of the internal reservoir and upstream of a pen assembly, pumping printing fluid from the reservoir.
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公开(公告)号：WO2019245526A1
公开(公告)日：2019-12-26
申请号：PCT/US2018/038139
申请日：2018-06-18
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： ARNOLD, Christopher John , HILTON, Michael Lee
IPC: B41J2/175
Abstract: A leak mitigation device includes a planar portion and a tail portion. The planar portion has a first width. The tail portion has a proximal end and a distal end. The proximal end is attached to the planar portion and has a second width less than the first width. The planar portion and the tail portion comprise an absorbent material.
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公开(公告)号：WO2018080498A1
公开(公告)日：2018-05-03
申请号：PCT/US2016/059133
申请日：2016-10-27
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： ARNOLD, Christopher John
IPC: B41J2/01 , B41J2/175 , F16K31/524 , B29C64/321
Abstract: In some examples, a valve assembly for a fluid ejection device includes a plurality of valves to control fluid supply from a plurality of fluid sources to the fluid ejection device, each respective valve of the plurality of valves actuatable between a first valve position to provide fluid communication through a first fluid path between a first fluid source of the plurality of fluid sources and the fluid ejection device, and a second valve position to provide fluid communication through a second fluid path between a second fluid source of the plurality of fluid sources and the fluid ejection device. A common actuator, when energized, controls movement of the plurality of valves. Each respective biasing mechanism of a plurality of biasing mechanisms is to maintain the respective valve at each of the first valve position and the second valve position without energizing the common actuator.
Abstract translation: 在一些示例中，用于流体喷射装置的阀组件包括多个阀，以控制从多个流体源到流体喷射装置的流体供应，多个阀中的每个相应的阀可致动 在提供通过所述多个流体源中的第一流体源与所述流体喷射装置之间的第一流体路径的流体连通的第一阀位置与提供通过第二流体源之间的第二流体路径的流体连通的第二阀位置之间， 在多个流体源和流体喷射装置中。 通用致动器在通电时控制多个阀的运动。 多个偏置机构中的每个相应的偏置机构将相应的阀保持在第一阀位置和第二阀位置中的每一个处，而不激励公共致动器。
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公开(公告)号：WO2020101682A1
公开(公告)日：2020-05-22
申请号：PCT/US2018/061210
申请日：2018-11-15
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： OSBORNE, Paul Allan , ARNOLD, Christopher John
Abstract: In one example, a liquid delivery system for an inkjet type dispenser includes a printhead unit, a reservoir separate from the printhead unit, a first flow path from the reservoir to the printhead unit, an interconnect to connect to a removable liquid container, a second flow path from the interconnect to the reservoir, and a valve movable between a first position in which the first flow path is open and the second flow path is closed and a second position in which the first flow path is closed and the second flow path is open.
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公开(公告)号：WO2020040768A1
公开(公告)日：2020-02-27
申请号：PCT/US2018/047690
申请日：2018-08-23
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： SCHALK, Wesley R. , ARNOLD, Christopher John , WILLIAMS, Kenneth
Abstract: The number of revolutions of an extraction pump of the printing device to empty a reservoir of the printing device filled with fluid of known volume back to a fluid supply from which the reservoir has been filled is counted. The displacement of the extraction pump based on the counted number of revolutions. A value of a fluid level gauge sensor of the reservoir after the reservoir has been emptied is sampled. The extraction pump and the fluid level gauge sensor are cross-calibrated based on the computed displacement of the extraction pump and the sampled value of the fluid level gauge.
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