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公开(公告)号：US10926535B2
公开(公告)日：2021-02-23
申请号：US16618940
申请日：2017-07-12
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Scott A Linn , Vincent C Korthuis , James M Gardner
IPC: B41J2/045
Abstract: A fluidic die may include a fluid actuator comprising an electrical resistor, a power node to supply electrical current to the resistor to drive the fluid actuator, a low side switch transistor connected to a ground node and having a gate to control the flow of electrical current through the resistor, a voltage regulator to receive electrical power from the power node and to output a predetermined voltage and a level shifter to control to output a low side switch transistor gate drive voltage using the predetermined voltage and based upon control signals to control the gate to control fluid displacement by the fluid actuator. The predetermined voltage is greater than a voltage of the control signals and is independent of a resistance of the ground node.
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公开(公告)号：US20200031121A1
公开(公告)日：2020-01-30
申请号：US16482763
申请日：2017-04-10
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Vincent C Korthuis , James Gardner , Eric T Martin
IPC: B41J2/045
Abstract: A fluid ejection system includes a group of actuators and a controller. The controller can determine an operational mode of the fluid ejection system. Examples of operational modes include a service mode. In response to determining the fluid ejection system is in the service mode, the controller can modify a firing event sequence of each actuator in the group of actuators. The modification of the firing event sequence can be based in part on determining the fluid ejection system is operating in the service mode.
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公开(公告)号：US20170326884A1
公开(公告)日：2017-11-16
申请号：US15522340
申请日：2014-11-25
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Vincent C Korthuis , David Maxfield , Andrew Queisser
IPC: B41J2/175
CPC classification number: B41J2/17543 , B41J2/17546 , B41J2/17566 , B41J2002/17579
Abstract: A liquid propelling component includes a liquid channel, a circuit block. The circuit block includes a first conductor disposed in the liquid channel to be in contact with liquid in the channel and a second conductor insulated from liquid in the channel. The liquid propelling component further includes a memory storing a digital code that corresponds to an analogue value of the second conductor under a predefined charge.
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公开(公告)号：US10857786B2
公开(公告)日：2020-12-08
申请号：US16335190
申请日：2017-01-19
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Vincent C Korthuis , Eric T Martin
IPC: B41J2/045
Abstract: A fluid ejection device may include a substrate, a first group of fluid drivers on the substrate, a second group of fluid drivers on the substrate, a memory element storing a predetermined offset value and electronics to receive an address of one of the fluid drivers of the first group for actuation control. The electronics may select one of the fluid drivers of the second group for actuation control based on the address and the stored offset value.
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公开(公告)号：US10668720B2
公开(公告)日：2020-06-02
申请号：US16306611
申请日：2016-10-03
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Eric Martin , Vincent C Korthuis
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.
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Patent Agency Ranking
公开(公告)号：US20180186149A1
公开(公告)日：2018-07-05
申请号：US15898121
申请日：2018-02-15
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： Vincent C Korthuis , Donald J Milligan , Dennis Schloeman
CPC classification number: B41J2/04546 , B41J2/04586 , B41J2/2103 , B41J19/142 , B41J19/147
Abstract: A multi-directional single pass printing apparatus may include a print head comprising a collection of slots. The collection of slots may include a central slot for delivering a central slot fluid type, a first serial arrangement of first slots on a first side of the central slot to deliver a first series of respective fluid types and a second serial arrangement of second slots on a second side of the central slot opposite the first side. The second series of slots are to deliver a second series of respective fluid types, wherein the second series of respective fluid types mirror the first series of respective fluid types with respect to the central slot fluid type.
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公开(公告)号：US11260653B2
公开(公告)日：2022-03-01
申请号：US16336572
申请日：2017-01-20
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Eric Martin , Vincent C Korthuis
Abstract: In some examples, a fluid ejection device includes a communication interface comprising a plurality of communication channel circuits capable of communicating over respective communication channels, and a configuration controller, responsive to an input, to selectively activate at least one communication channel circuit of the plurality of communication channel circuits, wherein different inputs to the configuration controller are to cause selective activation of different numbers of the plurality of communication channel circuits. The fluid ejection device further includes a nozzle controller responsive to data received through the activated at least one communication channel circuit to cause activation of at least one corresponding nozzle to eject fluid.
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公开(公告)号：US10730287B2
公开(公告)日：2020-08-04
申请号：US16349801
申请日：2017-02-23
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Vincent C Korthuis , Eric T Martin
Abstract: A fluid ejection device may include fluid actuators and an actuation controller. Each fluid actuator may have an associated address. The actuation controller is to receive an address for a fluid actuator of the device to be actuated and is further to automatically transmit one of different fire pulses based upon the received address.
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公开(公告)号：US20190283449A1
公开(公告)日：2019-09-19
申请号：US16318205
申请日：2016-10-26
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Eric Martin , Vincent C Korthuis
Abstract: A fluid ejection device including a plurality of primitives each having a same set of addresses and including a plurality of fluid chambers, each fluid chamber corresponding to a different address of the set of addresses and including a firing mechanism. Input logic receives a series of fire pulse groups, each fire pulse group corresponding to an address of the set of addresses and including warming data having an enable value or a disable value and a series of firing bits, each firing bit corresponding to a different primitive and having a firing value or a non-firing value. For each firing bit of each fire pulse group, when the warming data has the enable value, activation logic provides a warming pulse to the firing mechanism of the fluid chamber corresponding to the firing bit when the firing bit has the non-firing value.
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公开(公告)号：US11241879B2
公开(公告)日：2022-02-08
申请号：US16339054
申请日：2017-01-19
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Vincent C Korthuis , Eric T Martin
Abstract: A fluid ejection device may include fluid ejectors, fluid pumps to circulate fluid to the fluid ejectors, a first actuation signal line and at least one second actuation signal line. The first actuation signal line is connected to each of the fluid ejectors and each of the fluid pumps along which a first signal is transmittable to actuate a selected one of fluid ejectors and the fluid pumps. The at least one second actuation signal line is connected to the fluid pumps along which a second signal is transmittable to actuate a selected one of the fluid pumps.
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