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公开(公告)号：US20210325113A1
公开(公告)日：2021-10-21
申请号：US16972109
申请日：2019-01-04
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： John Liebeskind , Andrew L. Van Brocklin , David Champion
Abstract: In an example implementation, a sintering system includes optical fiber installed into a sintering furnace. A support structure inside the furnace is to support a token green object in a predetermined position and to hold a distal end of the fiber adjacent to the predetermined position. A light source is operably engaged at a proximal end of the fiber to transmit light through the fiber into the furnace. A light detector is operably engaged at the proximal end of the fiber to receive reflected light through the fiber that scatters off a surface of the token green object.
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公开(公告)号：US20200055312A1
公开(公告)日：2020-02-20
申请号：US16661103
申请日：2019-10-23
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Eric T. Martin , Andrew L. Van Brocklin , David Maxfield
Abstract: Measuring an inkjet nozzle may include taking at least one impedance measurement after the firing command is sent to detect the presence of a drive bubble and taking another impedance measurement to detect a collapse of the drive bubble.
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公开(公告)号：US09956765B2
公开(公告)日：2018-05-01
申请号：US15367699
申请日：2016-12-02
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Andrew L. Van Brocklin , Adam L. Ghozeil , Daryl E. Anderson
CPC classification number: B41J2/0452 , B41J2/0451 , B41J2/0458 , B41J2/04586 , B41J2/14153 , B41J2/175 , B41J2/17506 , B41J2/17566 , B41J2002/14354
Abstract: An inkjet printing system, fluid ejection system and method thereof are disclosed. The fluid ejection system includes a fluid ejection device and a determination module to determine a supply condition based on the count value output by the converter module. The fluid ejection device includes a fluid supply chamber to store fluid, an ejection chamber including a nozzle and a corresponding ejection member to selectively eject the fluid through the nozzle, a pressure sensor unit having a sensor plate to output a voltage value corresponding to a cross-sectional area of an amount of fluid in the ejection chamber. The fluid ejection system also includes a converter module to output a count value corresponding to the voltage value output by the pressure sensor unit.
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公开(公告)号：US09950517B2
公开(公告)日：2018-04-24
申请号：US15170588
申请日：2016-06-01
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Eric T. Martin , Andrew L. Van Brocklin , David Maxfield
CPC classification number: B41J2/04541 , B41J2/0451 , B41J2/0458 , B41J2/14153 , B41J2002/14354 , G01R27/02
Abstract: Measuring an inkjet nozzle may include taking at least one impedance measurement after the firing command is sent to detect the presence of a drive bubble and taking another impedance measurement to detect a collapse of the drive bubble.
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公开(公告)号：US20180086056A1
公开(公告)日：2018-03-29
申请号：US15827964
申请日：2017-11-30
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Andrew L. Van Brocklin
IPC: B41J2/045
CPC classification number: B41J2/04541 , B41J2/04581 , B41J2/04588 , B41J2002/1437
Abstract: In some examples, a drive signal generator for a fluid ejection element of a piezoelectric printhead, includes a core amplifier to amplify an input waveform to provide an amplified waveform, and a plurality of rail power circuits, each coupled to a different power input of the core amplifier. Each rail power circuit of the plurality of rail power circuits includes a comparator to compare an instantaneous voltage of the amplified waveform to a subset of a plurality of voltage sources, and a switch to, based on the comparing by the comparator, couple to a respective power input of the core amplifier a voltage source in the subset of the plurality of voltage sources that is closest to the instantaneous voltage and sufficient to generate the amplified waveform.
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Patent Agency Ranking
公开(公告)号：US09862186B2
公开(公告)日：2018-01-09
申请号：US15083258
申请日：2016-03-28
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Andrew L. Van Brocklin , Adam L. Ghozeil , Daryl E. Anderson
CPC classification number: B41J2/04573 , B41J2/0451 , B41J2/0458 , B41J2/04581 , B41J2/14153 , B41J2/17566 , B41J2002/17579 , B41J2202/07 , G01F23/185
Abstract: An inkjet printhead device, fluid ejection device and method thereof are disclosed. The fluid ejection device includes a fluid supply chamber to store fluid, an ejection chamber including a nozzle and a corresponding ejection member to selectively eject the fluid through the nozzle, and a channel to establish fluid communication between the fluid supply chamber and the ejection chamber. The fluid ejection device also includes a pressure sensor unit having a sensor plate to output a voltage value corresponding to a cross-sectional area of an amount of fluid in the at least ejection chamber.
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公开(公告)号：US20170313058A1
公开(公告)日：2017-11-02
申请号：US15518299
申请日：2014-10-28
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Peter James Fricke , Andrew L. Van Brocklin
IPC: B41J2/045
CPC classification number: B41J2/04541 , B41J2/04581 , B41J2/14072 , B41J2/14153 , B41J2/17546
Abstract: A print head assembly (PHA) includes a microelectromechanical systems (MEMS) die mounted to a substrate with an application specific integrated circuit (ASIC). The die includes an opening defined in the die, a plurality of nozzles adjacent to the opening in fluid communication with the opening, and a pad to receive electrical control signals. The ASIC includes a communication link and a plurality of transmission lines that transmit electrical signals to the MEMS die.
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公开(公告)号：US09701116B2
公开(公告)日：2017-07-11
申请号：US15262248
申请日：2016-09-12
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Andrew L. Van Brocklin , Eric T. Martin , Alexander Govyadinov , David Maxfield
IPC: B41J2/045 , B41J2/14 , B41J29/393
CPC classification number: B41J2/14153 , B41J2/0451 , B41J2/04555 , B41J2/0458 , B41J2/04586 , B41J29/393 , B41J2002/14354
Abstract: A method for determining an issue in an inkjet nozzle with impedance measurements, includes taking a first impedance measurement to detect a drive bubble with an impedance sensor; and taking a second impedance measurement to detect said drive bubble with said impedance sensor after said first impedance measurement.
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公开(公告)号：US20170080707A1
公开(公告)日：2017-03-23
申请号：US15367699
申请日：2016-12-02
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Andrew L. Van Brocklin , Adam L. Ghozeil , Daryl E. Anderson
IPC: B41J2/045
CPC classification number: B41J2/0452 , B41J2/0451 , B41J2/0458 , B41J2/04586 , B41J2/14153 , B41J2/175 , B41J2/17506 , B41J2/17566 , B41J2002/14354
Abstract: An inkjet printing system, fluid ejection system and method thereof are disclosed. The fluid ejection system includes a fluid ejection device and a determination module to determine a supply condition based on the count value output by the converter module. The fluid ejection device includes a fluid supply chamber to store fluid, an ejection chamber including a nozzle and a corresponding ejection member to selectively eject the fluid through the nozzle, a pressure sensor unit having a sensor plate to output a voltage value corresponding to a cross-sectional area of an amount of fluid in the ejection chamber. The fluid ejection system also includes a converter module to output a count value corresponding to the voltage value output by the pressure sensor unit.
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公开(公告)号：US09586410B2
公开(公告)日：2017-03-07
申请号：US14594863
申请日：2015-01-12
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Andrew L. Van Brocklin , Adam L. Ghozeil , Daryl E. Anderson
CPC classification number: B41J2/0452 , B41J2/0451 , B41J2/0458 , B41J2/04586 , B41J2/14153 , B41J2/175 , B41J2/17506 , B41J2/17566 , B41J2002/14354
Abstract: An inkjet printing system, fluid ejection system and method thereof are disclosed. The fluid ejection system includes a fluid ejection device and a determination module to determine a supply condition based on the count value output by the converter module. The fluid ejection device includes a fluid supply chamber to store fluid, an ejection chamber including a nozzle and a corresponding ejection member to selectively eject the fluid through the nozzle, a pressure sensor unit having a sensor plate to output a voltage value corresponding to a cross-sectional area of an amount of fluid in the ejection chamber. The fluid ejection system also includes a converter module to output a count value corresponding to the voltage value output by the pressure sensor unit.
Abstract translation: 公开了一种喷墨打印系统，流体喷射系统及其方法。 流体喷射系统包括流体喷射装置和确定模块，用于基于由转换器模块输出的计数值来确定供给条件。 流体喷射装置包括用于存储流体的流体供应室，包括喷嘴的喷射室和相应的喷射构件，以选择性地通过喷嘴喷射流体;压力传感器单元，具有传感器板，用于输出对应于十字的电压值 在喷射室中的流体量的检测区域。 流体喷射系统还包括转换器模块，用于输出与由压力传感器单元输出的电压值对应的计数值。
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