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61.发明申请
公开(公告)号：WO2018080539A1
公开(公告)日：2018-05-03
申请号：PCT/US2016/059702
申请日：2016-10-31
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： ANDERSON, Daryl, E. , MARTIN, Eric , GARDNER, James, Michael
Abstract: A fluid ejection device with a fluid chamber including a vaporization chamber and a thermal drive bubble formation mechanism to vaporize a portion of a fluid in the vaporization chamber to form a drive bubble in response to a firing signal during a firing operation. A drive bubble detect sensor separate from the thermal drive bubble formation mechanism and in contact with fluid in the vaporization chamber, the drive bubble detect sensor to inject a fixed current through the vaporization chamber to generate a first voltage signal representing a voltage response of the vaporization chamber and indicative of drive bubble formation during the firing operation. A thermal sensor to generate a second voltage signal indicative of a thermal response of the vaporization chamber during the firing operation, the first and second voltage signals combined being representative of an operating condition of the fluid chamber.
Abstract translation: 具有流体腔室的流体喷射装置，所述流体腔室包括蒸发腔室和热驱动气泡形成机构以蒸发所述蒸发腔室中的流体的一部分以响应于期间的点火信号而形成驱动气泡 发射操作。 驱动气泡检测传感器与热驱动气泡形成机构分离并且与汽化腔室中的流体接触，驱动气泡检测传感器通过汽化腔室注入固定电流以产生表示汽化的电压响应的第一电压信号 并且指示在发射操作期间驱动气泡形成。 一个热传感器，用于在点火操作期间产生表示蒸发室的热响应的第二电压信号，第一和第二电压信号组合表示流体室的工作状态。
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公开(公告)号：WO2018067141A1
公开(公告)日：2018-04-12
申请号：PCT/US2016/055511
申请日：2016-10-05
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： CICILI, Rogelio , MARTIN, Eric
Abstract: In one example in accordance with the present disclosure, a fluid ejection device is described. The fluid ejection device includes a number of nozzles to eject an amount of fluid. A first field-effect transistor (FET) activates a first fluidic operation component and a second FET activates a second fluidic operation component. The first FET and the second FET are selected from among a high-side switch FET, a low-side switch FET, and a hybrid FET and the first FET and the second FET are different from one another.
Abstract translation: 在根据本公开的一个示例中，描述了流体喷射装置。 流体喷射装置包括喷射一定量的流体的多个喷嘴。 第一场效应晶体管（FET）激活第一流体操作部件并且第二FET激活第二流体操作部件。 第一FET和第二FET选自高侧开关FET，低侧开关FET和混合FET，并且第一FET和第二FET彼此不同。
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公开(公告)号：WO2018067105A1
公开(公告)日：2018-04-12
申请号：PCT/US2016/055133
申请日：2016-10-03
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： MARTIN, Eric , KORTHUIS, Vincent C.
Abstract: In some examples, a fluid ejection device includes a nozzle to dispense fluid, and a recirculation controller to control recirculating of the nozzle. The recirculation controller is to receive, from a fluid ejection controller, an indication corresponding to a start of a sampling time interval, determine, during the sampling time interval, whether a firing event corresponding to firing of the nozzle has occurred, and in response to determining that the firing event has not occurred, cause activation of a recirculation pump to recirculate fluid through a chamber of the nozzle.
Abstract translation: 在一些示例中，流体喷射装置包括用于分配流体的喷嘴以及用于控制喷嘴的再循环的再循环控制器。 再循环控制器将从流体喷射控制器接收对应于采样时间间隔的开始的指示，在采样时间间隔期间确定是否发生了与喷嘴的点火相对应的点火事件，并且响应于 确定没有发生点火事件，导致再循环泵的启动以使流体再循环通过喷嘴的腔室。
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公开(公告)号：WO2020159518A1
公开(公告)日：2020-08-06
申请号：PCT/US2019/016093
申请日：2019-01-31
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： ANDERSON, Daryl E. , MARTIN, Eric , PRZYBYLA, James R. , CHEN, Chien-Hua
Abstract: One example provides a fluidic die including a semiconductor substrate, and a nozzle layer disposed on the substrate, the nozzle layer having a top surface opposite the substrate and including a nozzle formed therein, the nozzle including a fluid chamber disposed below the top surface and a nozzle orifice extending through the nozzle layer from the top surface to the fluid chamber, the fluid chamber to hold fluid, and the nozzle to eject fluid drops from the fluid chamber via the nozzle orifice. An electrode is disposed in contact with the nozzle layer about a perimeter of the nozzle orifice, the electrode to carry an electrical charge to adjust movement of electrically charged components of the fluid.
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公开(公告)号：WO2020106289A1
公开(公告)日：2020-05-28
申请号：PCT/US2018/062247
申请日：2018-11-21
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： MARTIN, Eric , PRZYBYLA, James R. , ANDERSON, Daryl E.
IPC: B41J2/14
Abstract: In one example in accordance with the present disclosure, a fluidic die is described. The fluidic die includes an array of firing subassemblies grouped into zones. Each firing subassembly includes 1) a firing chamber, 2) a fluid actuator, and 3) a sensor plate. The fluidic die also includes a measurement device per zone to measure a voltage indicative of an impedance within a selected firing chamber. The fluidic die includes a selector per firing subassembly to couple a selected sensor plate to the measurement device. A selector is adjacent a respective firing subassembly and a distance between the selector and the measurement device is different as compared to other selectors.
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Patent Agency Ranking
公开(公告)号：WO2020032956A1
公开(公告)日：2020-02-13
申请号：PCT/US2018/046082
申请日：2018-08-09
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： ANDERSON, Daryl E. , GARDNER, James Michael , MARTIN, Eric
Abstract: A microfluidic device may include a fluid channel defined in a substrate, an impedance sensor positioned within the fluid channel, and control logic. The control logic may force a current into the impedance sensor to sense an impedance at the location of the impedance sensor, the sensed impedance defining whether the fluid within the fluid channel is at the location of the impedance sensor, and instruct a pump device to apply a back pressure on the fluid to maintain the fluid upstream from the impedance sensor in response to a determination that the sensed impedance indicates that the fluid is located at the location of the impedance sensor.
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公开(公告)号：WO2019240758A1
公开(公告)日：2019-12-19
申请号：PCT/US2018/036907
申请日：2018-06-11
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： ANDERSON, Daryl, E. , MARTIN, Eric , GARDNER, James, Michael
Abstract: Examples of a fluidic die for thermal zone selection with a sequencer and decoders are described herein. In some examples, the fluidic die includes multiple thermal zones. Each thermal zone includes a temperature sensor, a fluidic actuator and a decoder. The fluidic die also includes shared thermal control circuitry to process an output of the temperature sensor in a selected thermal zone. The fluidic die further includes a sequencer to output a sequence state to select one thermal zone at a time for processing by the shared thermal control circuitry. The decoder of the selected thermal zone decodes the sequence state.
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68.发明申请
公开(公告)号：WO2019221707A1
公开(公告)日：2019-11-21
申请号：PCT/US2018/032764
申请日：2018-05-15
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： MARTIN, Eric , PRZYBYLA, James R. , CICILI, Rogelio
Abstract: A fluidic die including fluid chambers, each including an electrode exposed to an interior of the fluid chamber and each having a corresponding fluid actuator operating at a first voltage level. Monitoring circuitry, operating at a second voltage level lower than the first voltage level, includes a select transistor and a pulldown transistor for each fluid chamber to selectively couple to the electrode, at least the select transistor being a high voltage tolerant transistor to operate at the second voltage in a normal operating condition and having a breakdown voltage level greater than the first voltage level to prevent a fault current from flowing into the select transistor from the electrode in a fault condition if the fluid actuator short-circuits to the electrode.
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公开(公告)号：WO2019203832A1
公开(公告)日：2019-10-24
申请号：PCT/US2018/028313
申请日：2018-04-19
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： MARTIN, Eric , PRZYBYLA, James R. , ANDERSON, Daryl E.
IPC: B41J29/393
Abstract: An offline fluid ejection detection device may include a chassis separate from a printing device to secure a fluid dispensing device, driver electronics coupled to the chassis and positioned to electrically interface with the fluid dispensing device when the fluid dispensing device is secured to the chassis, and an input/output (I/O) port to communicate diagnostic data defining fluid ejection functional test results of the fluid dispensing device.
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公开(公告)号：WO2019117848A1
公开(公告)日：2019-06-20
申请号：PCT/US2017/065527
申请日：2017-12-11
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： ANDERSON, Daryl E. , MARTIN, Eric , GARDNER, James Michael , FEINN, James A.
Abstract: A method of distinguishing between fluids may include providing a current to an electrode disposed within a fluidic passageway of a fluidic die, the current to be forced into a fluid within the fluidic die, sensing an impedance at the electrode, and determining a particle vehicle separation level of the fluid based on the sensed impedance between a first instance and a second instance.
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