公开(公告)号：US12233647B2

公开(公告)日：2025-02-25

申请号：US18032534

申请日：2020-10-23

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

Inventor： Eric T. Martin ,  James R. Przybyla

IPC: B41J2/145 ,  B41J2/14

Abstract: In some examples, a fluidic die includes an arrangement of fluidic elements to dispense a fluid, each fluidic element of the fluidic elements including a fluidic actuator and a fluid chamber. An array of fluid feed holes is arranged in a plurality of dimensions to communicate the fluid with the fluidic elements, where each of multiple fluid feed holes along a first dimension of the plurality of dimensions is distinct from multiple fluid feed holes along a second dimension of the plurality of dimensions. The fluidic die includes first circuit elements operable at a first power supply voltage, the first circuit elements interspersed in regions between the fluidic elements along different axes of the fluidic die. The fluidic die includes second circuit elements operable at a second power supply voltage greater than the first power supply voltage, the second circuit elements comprising active devices and placed in a region outside of a boundary defining a space in which the fluidic elements and the first circuit elements are placed.

公开(公告)号：US12128684B2

公开(公告)日：2024-10-29

申请号：US17921333

申请日：2020-05-22

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

Inventor： Daryl Eugene Anderson ,  James R. Przybyla ,  Eric T. Martin ,  Garrett E. Clark

IPC: B41J2/14 ,  B41J2/175 ,  B41J2/18

CPC classification number: B41J2/1404 ,  B41J2/14145 ,  B41J2/175 ,  B41J2/18 ,  B41J2002/14459 ,  B41J2202/12

Abstract: An example fluid ejection device comprises a plurality of distinct fluid channels. Each fluid channel comprises a distinct fluid inlet to the ejection device. A subset of the plurality of distinct fluid channels comprises fluid recirculating fluid channels, and the remaining fluid channels comprising non-recirculating fluid channels.

公开(公告)号：US12030310B2

公开(公告)日：2024-07-09

申请号：US17977559

申请日：2022-10-31

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

Inventor： Jason Hower ,  James R Przybyla ,  Vincent Korthuis ,  Eric T. Martin

IPC: B41J2/045

CPC classification number: B41J2/04508 ,  B41J2/0451 ,  B41J2/04513 ,  B41J2/04515 ,  B41J2/0458

Abstract: According to an example, a method for performing maintenance routines in a plurality of actuators comprises firing a set of actuators at different energies, determining turn on energy values for the set of actuators based on measurements measured via chamber sensors associated with the set of actuators at the different energies, determining turn on energy differences for the set of actuators based on the turn on energy values determined for the set of actuators and threshold turn on energy values associated with the set of actuators, and performing maintenance routines corresponding to the determined turn on energy differences.

公开(公告)号：US20230382116A1

公开(公告)日：2023-11-30

申请号：US18032534

申请日：2020-10-23

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

Inventor： Eric T. Martin ,  James R. Przybyla

IPC: B41J2/145 ,  B41J2/14

CPC classification number: B41J2/145 ,  B41J2/1404 ,  B41J2202/13 ,  B41J2202/12

Abstract: In some examples, a fluidic die includes an arrangement of fluidic elements to dispense a fluid, each fluidic element of the fluidic elements including a fluidic actuator and a fluid chamber. An array of fluid feed holes is arranged in a plurality of dimensions to communicate the fluid with the fluidic elements, where each of multiple fluid feed holes along a first dimension of the plurality of dimensions is distinct from multiple fluid feed holes along a second dimension of the plurality of dimensions. The fluidic die includes first circuit elements operable at a first power supply voltage, the first circuit elements interspersed in regions between the fluidic elements along different axes of the fluidic die. The fluidic die includes second circuit elements operable at a second power supply voltage greater than the first power supply voltage, the second circuit elements comprising active devices and placed in a region outside of a boundary defining a space in which the fluidic elements and the first circuit elements are placed.

公开(公告)号：US20230347646A1

公开(公告)日：2023-11-02

申请号：US17921333

申请日：2020-05-22

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

Inventor： Daryl Eugene Anderson ,  James R. Przybyla ,  Eric T. Martin ,  Garrett E. Clark

IPC: B41J2/14 ,  B41J2/175 ,  B41J2/18

CPC classification number: B41J2/1404 ,  B41J2/14145 ,  B41J2/175 ,  B41J2/18 ,  B41J2002/14459 ,  B41J2202/12

Abstract: An example fluid ejection device comprises a plurality of distinct fluid channels. Each fluid channel comprises a distinct fluid inlet to the ejection device. A subset of the plurality of distinct fluid channels comprises fluid recirculating fluid channels, and the remaining fluid channels comprising non-recirculating fluid channels.

公开(公告)号：US11618253B2

公开(公告)日：2023-04-04

申请号：US17302887

申请日：2021-05-14

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

Inventor： Sean P. McClelland ,  Donald J. Milligan ,  Eric T. Martin

IPC: B41J2/045 ,  B41J2/14

Abstract: A fluidic die may include a substrate supporting a fluid actuator address line and first and second groups of fluid actuators connected to the fluid actuator address line. The first group of fluid actuators may include first and second types of fluid actuators having different operating characteristics. The second group of fluid actuators may include the first and the second types of fluid actuators. The fluid actuators of the first and second groups have addresses such that a fluid actuator of the first type in the first group and a fluid actuator of the second type in the second group are both enabled in response to a single enabling event on the fluid actuator address line.

公开(公告)号：US11383516B2

公开(公告)日：2022-07-12

申请号：US16972119

申请日：2018-11-21

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

Inventor： Eric T. Martin ,  Vincent C. Korthuis

IPC: B41J2/14 ,  B41J2/045 ,  B41J2/155

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 disposed, and 3) a sensor plate. The fluidic die also includes a measurement device per zone to determine a state of a selected sensor plate. The fluidic die includes a selector per firing subassembly to couple the selected sensor plate to the measurement device. The fluidic die also includes a transmission path between each selector and its corresponding sensor plate. A first transmission path for a particular sensor plate has physical properties such that a parasitic capacitance along the first transmission path corresponds to a parasitic capacitance for a second transmission path of a second sensor plate in the zone, regardless of a difference in transmission path length.

公开(公告)号：US20210362491A1

公开(公告)日：2021-11-25

申请号：US17045517

申请日：2018-06-11

Applicant: Hewlett-Packard Development Company, L.P

Inventor： Daryl E. Anderson ,  Eric T. Martin ,  James Michael Gardner

IPC: B41J2/045

Abstract: Examples of a fluidic die for thermal zone selection with a circular shift register are described herein. In some examples, the fluidic die includes multiple thermal zones. Each thermal zone includes a temperature sensor and a fluidic actuator. The fluidic die also includes shared thermal control circuitry to process an output of the temperature sensor of a selected thermal zone. The fluidic die further includes a circular shift register that includes multiple memory elements. Each memory element is associated with one thermal zone. A token circulates within the circular shift register to select one thermal zone at a time for processing by the shared thermal control circuitry.

公开(公告)号：US11123981B2

公开(公告)日：2021-09-21

申请号：US16778197

申请日：2020-01-31

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

Inventor： Eric T. Martin ,  Chris Bakker

IPC: B41J2/045 ,  B41J2/14

Abstract: Fluid ejection devices with multiple activation modes are disclosed. An example printhead assembly includes a fluid ejection nozzle, a first resistor fluidically coupled to the fluid ejection nozzle, and a second resistor fluidically coupled to the fluid ejection nozzle. The example printhead also includes an addressing circuit to receive a nozzle address and an activation mode to activate the fluid ejection nozzle. The activation mode determines which of the first resistor and the second resistor are to be energized.

公开(公告)号：US20210283900A1

公开(公告)日：2021-09-16

申请号：US16603822

申请日：2018-04-06

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

Inventor： Daryl E. Anderson ,  Eric T. Martin

IPC: B41J2/045 ,  B41J2/145 ,  B33Y30/00 ,  B33Y50/02 ,  B29C64/209 ,  B29C64/393

Abstract: In some examples, a fluid dispensing device includes a plurality of fluidic actuators, and a plurality of sense measurement storage elements to store sense measurement indicators for indicating whether sense measurement is to be performed for fluidic actuators of the plurality of fluidic actuators. The fluid dispensing device further includes a controller to control setting of the sense measurement indicators in the sense measurement storage elements to select which fluidic actuator is to be subject to a sense measurement.