公开(公告)号：US11110702B2

公开(公告)日：2021-09-07

申请号：US16857403

申请日：2020-04-24

Applicant: Hewlett-Packard Development Company, L.P.

Inventor： Eric Martin ,  Vincent C Korthuis

IPC: B41J2/045 ,  B41J2/18

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.

公开(公告)号：US20190375207A1

公开(公告)日：2019-12-12

申请号：US16349801

申请日：2017-02-23

Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

Inventor： Vincent C Korthuis ,  Eric T Martin

IPC: B41J2/045

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.

公开(公告)号：US10369801B2

公开(公告)日：2019-08-06

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

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 analog value of the second conductor under a predefined charge.

公开(公告)号：US10293603B2

公开(公告)日：2019-05-21

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

IPC: B41J2/21 ,  B41J2/045 ,  B41J19/14

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.

公开(公告)号：US20210331465A1

公开(公告)日：2021-10-28

申请号：US16619029

申请日：2017-07-12

Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

Inventor： Scott A Linn ,  Eric Martin ,  Vincent C Korthuis ,  James Michael Gardner

IPC: B41J2/045

Abstract: A fluidic die includes a number of actuators to eject fluid from the fluidic die. The number of actuators form a number of primitives. The fluidic die includes a plurality of delays within a column of the primitives, and a processing device to control the delays through which a number of activation pulses pass. The activation pulses activate each of the actuators associated with the primitives. The activation pulses are delayed between the primitives via at least one of the delays to reduce peak power demands of the fluidic die.

公开(公告)号：US11155085B2

公开(公告)日：2021-10-26

申请号：US16619156

申请日：2017-07-17

Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

Inventor： Stanley J Wang ,  Erik D Torniainen ,  Vincent C Korthuis

IPC: B41J2/14 ,  H05B3/14

Abstract: A thermal fluid ejection heating element may include a first conductive trace, and an at least partially perforated resistive thin film material electrically coupling the first conductive trace to a second conductive trace. The perforations within the perforated resistive thin film material defines a resistance of the thermal fluid ejection heating element.

公开(公告)号：US20210283909A1

公开(公告)日：2021-09-16

申请号：US16339054

申请日：2017-01-19

Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

Inventor： Vincent C Korthuis ,  Eric T Martin

IPC: B41J2/045 ,  B41J2/175

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.

公开(公告)号：US20210283907A1

公开(公告)日：2021-09-16

申请号：US16336572

申请日：2017-01-20

Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

Inventor： Eric Martin ,  Vincent C Korthuis

IPC: B41J2/045

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.

公开(公告)号：US11020964B2

公开(公告)日：2021-06-01

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: B41J2/04 ,  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.

公开(公告)号：US09937713B2

公开(公告)日：2018-04-10

申请号：US15518950

申请日：2014-10-29

Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

Inventor： Vincent C Korthuis ,  Donald J Milligan ,  Dennis Schloeman

IPC: B41J29/38 ,  B41J2/045 ,  B41J2/21

CPC classification number: B41J2/04546 ,  B41J2/04586 ,  B41J2/2103 ,  B41J19/142 ,  B41J19/147

Abstract: According to an example, multi-directional single pass printing may include utilizing a print head that includes slots that include a first slot for a first ink color, and two or more additional slots. A slot of the additional slots may be disposed on a first side of the first slot, and another slot of the additional slots may be disposed on a second side of the first slot. The additional slots may include a further ink color. Data may be forwarded to a set of slots when a direction bit related to the print head is set to a first value, and to another set of slots when the direction bit is set to a second value. A number of channels for forwarding the data to the slots may be less than the number of slots.