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公开(公告)号：US10220609B2
公开(公告)日：2019-03-05
申请号：US15684465
申请日：2017-08-23
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Daryl E. Anderson , Eric T. Martin , Peter James Fricke
Abstract: In an example, a print head comprises a nozzle to be activated by a delayed fire pulse that is delayed from an initial fire pulse, a sensor to measure an impedance of the nozzle, and a detector to determine a first time instant following the delayed fire pulse for registering a first impedance measurement by the sensor.
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公开(公告)号：US10189248B2
公开(公告)日：2019-01-29
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
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：US10029464B2
公开(公告)日：2018-07-24
申请号：US15706315
申请日：2017-09-15
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Adam L. Ghozeil , David Maxfield , Peter James Fricke
Abstract: An example provides a fluid ejection apparatus including a fluid feed slot along a length of a print head die of the fluid ejection apparatus to supply a fluid to a plurality of drop ejectors, control circuitry adjacent to at least one side of the fluid feed slot to control ejection of drops of fluid from the plurality of drop ejectors, and a single power supply connector at an end of the print head die to supply power to the control circuitry.
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公开(公告)号：US20170087829A1
公开(公告)日：2017-03-30
申请号：US15307869
申请日：2014-06-30
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Daryl E Anderson , Eric T Martin , Peter James Fricke , James Michael Gardner
IPC: B41J2/045
CPC classification number: B41J2/04541 , B41J2/04586 , B41J2/04588 , B41J2/0459 , B41J2/04591
Abstract: An example device in accordance with an aspect of the present disclosure includes modules to generate an input signal, apply the input signal to an ink sample to obtain an ink signal, compare the ink signal to a reference value, and identify whether the ink signal is consistent with an ink signature. A module may be contained on an inkjet printhead die.
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公开(公告)号：US20170050428A1
公开(公告)日：2017-02-23
申请号：US15306737
申请日：2014-04-30
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Daryl E Anderson , Eric T Martin , Peter James Fricke
IPC: B41J2/045
CPC classification number: B41J2/0451 , B41J2/04541 , B41J2/04555 , B41J2/04573 , B41J2/0458 , B41J2/04588 , B41J2/04598 , B41J2/165 , B41J2/16579 , B41J2/175
Abstract: In an example, a method for determining an issue in an inkjet nozzle includes providing an initial fire pulse for firing a nozzle, and receiving the initial fire pulse as a delayed fire pulse at a primitive of the nozzle. The method includes firing the nozzle with the delayed fire pulse, and determining a first time instant following the delayed fire pulse for taking a first impedance measurement across the nozzle.
Abstract translation: 在一个示例中，用于确定喷墨喷嘴中的问题的方法包括提供用于点燃喷嘴的初始火焰脉冲，并且在喷嘴的原始处接收作为延迟的火焰脉冲的初始火焰脉冲。 该方法包括用延迟的点火脉冲对喷嘴进行点火，以及确定延迟的火花脉冲之后的第一时刻，以便跨过喷嘴进行第一阻抗测量。
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Patent Agency Ranking
公开(公告)号：US20170001433A1
公开(公告)日：2017-01-05
申请号：US15114938
申请日：2014-01-30
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Daryl E. Anderson , Eric T. Martin , Peter James Fricke , James Michael Gardner
IPC: B41J2/045
CPC classification number: B41J2/04508 , B41J2/0451 , B41J2/0458 , B41J2/04586 , B41J2/14153 , B41J2/16579 , B41J2002/14354
Abstract: Systems and methods for evaluating the condition of a print nozzle are described. In one example, impedances across the print nozzle are measured. Subsequently, first test result and second test result are determined and registered at a first predetermined time instant and at a second predetermined time instant, respectively. The first test result and the second test result are obtained based on the measured impedances. Based on the first test result and the second test result, the condition of the print nozzle, is determined.
Abstract translation: 描述了用于评估打印喷嘴条件的系统和方法。 在一个示例中，测量打印喷嘴两端的阻抗。 随后，分别在第一预定时刻和第二预定时刻确定并登记第一测试结果和第二测试结果。 基于测量的阻抗获得第一测试结果和第二测试结果。 基于第一测试结果和第二测试结果，确定打印喷嘴的状态。
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公开(公告)号：US10434768B2
公开(公告)日：2019-10-08
申请号：US16240562
申请日：2019-01-04
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Peter James Fricke , Andrew L. Van Brocklin
Abstract: In some examples, a printing system comprises a plurality of microelectromechanical systems (MEMS) dies comprising printing fluid jets, a printhead assembly (PHA) application specific integrated circuit (ASIC), and a substrate comprising the plurality of MEMS dies and the PHA ASIC. The PHA ASIC is to process image data into a plurality of data signals that define a firing pattern, and transmit the data signals through transmission lines on the substrate to the plurality of MEMS dies. The printing fluid jets of the plurality of MEMS dies are to fire in response to the data signals.
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公开(公告)号：US10421273B2
公开(公告)日：2019-09-24
申请号：US16161399
申请日：2018-10-16
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Andrew L. Van Brocklin , Mark Hunter , Peter James Fricke , Adam L. Ghozeil , James Michael Gardner
Abstract: In some examples, a method of regulating a temperature of a printhead includes charging, in a first state of a temperature regulator, an analog memory to a reference voltage that corresponds to a predetermined temperature of the printhead. The temperature regulator monitors, during a second state, the temperature of the printhead, the monitoring including measuring a thermal voltage representing an actual temperature of at least a first local area of a plurality of local areas of the printhead, and comparing, with a comparator, the reference voltage to the thermal voltage to obtain a comparison result for at least the first local area. Based on the comparison result, a series of warming pulses from a warming pulse circuit to at least the first local area is selectively enabled.
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公开(公告)号：US20190047283A1
公开(公告)日：2019-02-14
申请号：US16161399
申请日：2018-10-16
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Andrew L. Van Brocklin , Mark Hunter , Peter James Fricke , Adam L. Ghozeil , James Michael Gardner
CPC classification number: B41J2/04563 , B41J2/04528 , B41J2/0458 , B41J2/04588 , B41J2/04596 , B41J2/195
Abstract: In some examples, a method of regulating a temperature of a printhead includes charging, in a first state of a temperature regulator, an analog memory to a reference voltage that corresponds to a predetermined temperature of the printhead. The temperature regulator monitors, during a second state, the temperature of the printhead, the monitoring including measuring a thermal voltage representing an actual temperature of at least a first local area of a plurality of local areas of the printhead, and comparing, with a comparator, the reference voltage to the thermal voltage to obtain a comparison result for at least the first local area. Based on the comparison result, a series of warming pulses from a warming pulse circuit to at least the first local area is selectively enabled.
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公开(公告)号：US10099475B2
公开(公告)日：2018-10-16
申请号：US15308064
申请日：2014-05-30
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Peter James Fricke , Scott A Linn , Luca Molinari
Abstract: In an example, a piezoelectric printhead assembly includes a micro-electro mechanical system (MEMS) die including a plurality of nozzles. An application-specific integrated circuit (ASIC) die is coupled to the MEMS die by a plurality of wire bonds, wherein each of the wire bonds corresponds to a respective nozzle of the plurality of nozzles. An arbitrary data generator (ADG) on the ASIC is to provide a digital data sequence, and a multiplier is to scale multiple nozzles of the plurality of nozzles.
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