公开(公告)号：US11526123B2

公开(公告)日：2022-12-13

申请号：US17041869

申请日：2018-05-24

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

Inventor： Sean Daniel FitzGerald ,  Jeff Luke

IPC: G03G21/18 ,  G03G15/08

Abstract: Examples described herein relate to an apparatus for particulate delivery consistent with the disclosure. For instance, the apparatus may comprise a particulate reservoir container, an orifice positioned at an output portion of the particulate reservoir container, and a baffle that when compressed forces air through an air valve to direct the air below a level of particulates of print material to aerate the particulates of print material.

公开(公告)号：US20210270594A1

公开(公告)日：2021-09-02

申请号：US17256671

申请日：2018-11-02

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

Inventor： Gabriel Scott McDaniel ,  Sean Daniel FitzGerald ,  Jeffrey H. Luke

IPC: G01B7/34 ,  G03G15/00 ,  G03G15/20

Abstract: An example print apparatus is described as including a fuser roller, a pressure device that generates wear on a section of the fuser roller surface, and a wear detection engine that identifies a degree of wear on the surface of the fuser roller. An example fuser roller may include a tube, a heating element, and a plurality of layers having a detectable pattern. An example print apparatus may include a wear detection engine having an emitter, a detector, and a controller that identifies a wear pattern based on data provided by the detector in response to activation of the emitter and determines a degree of wear based on the identified wear pattern.

公开(公告)号：US20210170758A1

公开(公告)日：2021-06-10

申请号：US16763848

申请日：2018-04-13

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

Inventor： Sean Daniel FitzGerald ,  Jeff Luke ,  Mathew Lavigne

IPC: B41J2/175 ,  G03G15/08

Abstract: In various examples, colorant sensors can include a printing device comprising a hopper to receive a colorant, a supply to receive the colorant from the hopper, an aperture disposed between the hopper and the supply, a light emitter to emit light that passes through the aperture, and a light sensor located on the opposite side of the aperture relative the light emitter to sense a portion of the emitted light that passes through the aperture to permit determination of whether colorant present in the aperture based on the portion of the emitted light sensed by the light sensor.

公开(公告)号：US20230306358A1

公开(公告)日：2023-09-28

申请号：US18023372

申请日：2020-10-01

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

Inventor： Gabriel Scott McDaniel ,  Jeffrey H Luke ,  Sean Daniel FitzGerald

IPC: G06Q10/0832 ,  G06Q10/0833

CPC classification number: G06Q10/0832 ,  G06Q10/0833

Abstract: In some examples, a computing device can include a processing resource and a memory resource storing instructions to cause the processing resource to determine, for a print material supply to be shipped to a location, whether a thermal excursion is predicted to occur based on weather information for the location and shipping service information, determine, in response to the thermal excursion being predicted, whether an unsafe delivery of the print material supply is predicted to occur at the location, and in response to the unsafe delivery being predicted, cause thermal protection to be provided for the print material supply during shipment to the location.

公开(公告)号：US11731430B2

公开(公告)日：2023-08-22

申请号：US17413691

申请日：2019-07-08

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

Inventor： Justin Pettingill ,  Gabriel McDaniel ,  Sean Daniel FitzGerald ,  Jeffrey H. Luke

IPC: B41J2/175 ,  B41J29/38 ,  G03G15/08 ,  G03G21/18

CPC classification number: B41J2/17509 ,  B41J29/38 ,  G03G15/0894 ,  G03G21/181

Abstract: A device is to supply printing material to a printing material container in a printing apparatus. The device includes a first container to contain printing material, a first piston movable in the first container to exert first pressure to discharge the printing material contained in the first container from the first container, a second container having an opening to the first container, and a second piston movable in the second container to exert second pressure higher than the first pressure to form a pressure gradient based on the first pressure and the second pressure through the opening. The pressure gradient is to disperse the printing material in the first container.

公开(公告)号：US20220035272A1

公开(公告)日：2022-02-03

申请号：US17309389

申请日：2019-07-15

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

Inventor： Gabriel S. McDaniel ,  Sean Daniel FitzGerald

IPC: G03G15/09 ,  B41J2/43 ,  G03G13/09

Abstract: An example magnetic material supply apparatus includes a reservoir to contain a magnetic material, a connecting member having a first end coupled to the reservoir to receive the magnetic material, and a magnet. A magnetic field produced by the magnet controls supply of the magnetic material through the connecting member.

公开(公告)号：US20210309014A1

公开(公告)日：2021-10-07

申请号：US17261064

申请日：2018-11-15

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

Inventor： Jeffrey H. Luke ,  Mathew Lavigne ,  Sean Daniel FitzGerald

IPC: B41J2/175 ,  B41F31/02

Abstract: A dispensable substance container may include a printing substance dispensing nozzle comprising a first material. The dispensable substance container an elongate body, comprising a wall, comprising a second material encompassing a cavity to contain a dispensable substance, and an attachment portion to attach the elongate body to the printing substance dispensing nozzle; and a structurally compromised portion of the elongate body extending along a length of the elongate body, wherein the elongate body and the attachment portion are to be severed along the structurally compromised portion by a pushrod moveable through the cavity to expel the dispensable substance out the dispensing nozzle.

公开(公告)号：US20210300096A1

公开(公告)日：2021-09-30

申请号：US17262384

申请日：2018-11-09

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

Inventor： Sean Daniel FitzGerald ,  Gabriel Scott McDaniel

IPC: B41J29/38 ,  B29C64/227

Abstract: In some examples, a non-transitory machine-readable storage medium having stored thereon machine-readable instructions to cause a processing resource to: detect an alteration of a print drive assembly, alter a state of a first drive motor associated with the print drive assembly based the detected alteration of the print drive assembly, and alter a state of a drive axis associated with the print drive assembly based on the detected alteration of the print drive assembly.