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公开(公告)号：US11772385B2
公开(公告)日：2023-10-03
申请号：US17417724
申请日：2019-05-28
Applicant: Hewlett-Packard Development Company, L.P.
CPC classification number: B41J2/18 , B41J2/175 , B41J2/1707
Abstract: A printing device and method is described comprising: selectively generating a negative fluid pressure between one of one or more printing fluid supplies and a first one of first and second ports of a printhead; selectively generating a positive fluid pressure between one of said printing fluid supplies and a second one of the first and second ports of the printhead; and providing a first pulsed signal to a first priming pump associated with a first one of the first and second ports, wherein the first one of said first and second ports of the printhead is opened under the control of said first priming pump, such that printing fluid within the printhead exits the printhead through the first one of the first and second ports.
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Patent Agency Ranking
公开(公告)号：US11141987B2
公开(公告)日：2021-10-12
申请号：US16089514
申请日：2017-03-28
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Oriol Parera Fiestas , Tuomo Eljas Kaikkonen , Albert Crespi Serrano
IPC: B41J2/175 , B41J29/393
Abstract: Operating a fluid delivering system in a printer, wherein the fluid delivering system comprises a fluid supply including a fluid bag which contains a fluid to be delivered to a fluid delivering tube connected to a printhead, and a closed pressurizing volume which surrounds the fluid bag to expel fluid from the fluid bag to the fluid delivering tube when applying pressure from a pressurizing system to the pressurizing volume, wherein pressure in the pressurizing system relative to atmosphere is measured by a first sensor, and wherein a second sensor provides an output signal which indicates a pressure difference between the pressurizing system and the fluid delivering tube, comprising disconnecting the pressurizing volume of the fluid supply from the pressurizing system, providing a connection of the pressurizing volume to atmosphere to transmit atmospheric pressure to the fluid, generating pressure in the pressurizing system, performing measurements of the pressure in the pressurizing system relative to atmosphere by the first sensor, and calibrating the second sensor by the measurements of the first sensor.
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公开(公告)号：US11104147B2
公开(公告)日：2021-08-31
申请号：US16470940
申请日：2017-04-19
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Abstract: A differential pressure sensor is used for measuring or identifying a pressure difference, for example to determine a movement or speed of fluid in a fluid conduit or printer re-circulation conduit. The differential pressure sensor determines the difference between an air pressure and a fluid pressure, wherein the fluid is moving in a flow channel. The flow channel includes a surface conveying a fluid between a first port and second port. An opening in the surface of the flow channel provides a fluid communication between the differential pressure sensor and fluid. Moreover, the sensor is arranged in air communication with the pressure box, such as to allow the differential pressure sensor to identify the pressure difference between the air pressure in the pressure box and the fluid pressure in the flow channel.
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公开(公告)号：US20210187956A1
公开(公告)日：2021-06-24
申请号：US16074322
申请日：2016-05-26
Applicant: Hewlett-Packard Development Company, L.P.
IPC: B41J2/175
Abstract: In an example, a pressure system includes a fluid movement device, a buffer reservoir coupled to the fluid movement device, and a first fluid interface coupled to the buffer reservoir. In that example, the first fluid interface is able to couple to a pressurizable chamber of a print fluid container (that can apply force on a print fluid bag of the print fluid container).
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公开(公告)号：US10437534B2
公开(公告)日：2019-10-08
申请号：US15573215
申请日：2015-07-24
Applicant: Hewlett-Packard Development Company, L.P.
Abstract: In examples a printing system comprises a controller and a printing device. The controller is to divide a print job into a sequence of areas, wherein an image property varies between adjacent areas. The controller is to determine a pausing point to be within a runout area at which a remaining amount of a consumable will be at or below a predetermined first amount when executing the print job when the runout area fulfills a condition. The controller is to determine the pausing point to be within a preceding area that fulfills the condition when the runout area does not fulfill the condition. The controller is to control the printing device to pause printing of the print job at the pausing point.
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公开(公告)号：US20170008297A1
公开(公告)日：2017-01-12
申请号：US15115719
申请日：2014-02-04
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Emilio Angulo Navarro , Femando Bayona Alcolea , Jorge Castano Aspas , Mikel Zuza Irurueta , Alfonso CAMENO SALINAS , Albert Crespi Serrano
IPC: B41J2/175
CPC classification number: B41J2/17566 , B41J2/175 , B41J2/17513 , B41J29/393 , B41J2002/17576 , B41J2002/17579
Abstract: An example in accordance with an aspect of the present disclosure includes an ink channel of a printer, coupleable to an ink supply to receive an ink. A sensor assembly is mounted to the ink channel, including a sensor in fluid communication with the ink channel to identify an ink level of the ink supply based on a pressure difference between an air pressure, associated with the sensor assembly, and an ink pressure, associated with the ink channel.
Abstract translation: 根据本公开的一个方面的示例包括打印机的墨水通道，其可连接到墨水供应以接收墨水。 传感器组件安装到墨水通道，包括与墨水通道流体连通的传感器，以基于与传感器组件相关联的空气压力和墨水压力之间的压力差来识别墨水供应的墨水量， 与墨水通道相关联。
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