公开(公告)号：US12202253B2

公开(公告)日：2025-01-21

申请号：US18041100

申请日：2020-08-10

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

Inventor： Wenbing Li ,  Chee Loong Yap

IPC: B41J11/04

Abstract: Examples include an apparatus comprising a media path assembly for a printer. The assembly comprises a transmission module configured to be connected to a first motor of the printer and a first roller connected to the transmission module. The first roller is driven by the first motor through the transmission module when pulling a continuous sheet from a roll around a spindle of the printer in a forward direction towards a print zone of the printer. The transmission module is configured to be connected to a second roller of the printer, the second roller being driven by the first motor through the transmission module when pulling a cut sheet from a cut sheet tray of the printer in a forward direction towards the print zone.

公开(公告)号：US12202195B2

公开(公告)日：2025-01-21

申请号：US18108130

申请日：2023-02-10

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

Inventor： Alex Veis ,  Esteve Comas Cespedes ,  Joaquim Brugue Garvi ,  Raimon Castells De Monet

IPC: B29C64/165 ,  B29C64/209 ,  B29C64/282 ,  B29C64/291 ,  B29C64/393 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02

Abstract: An example apparatus to produce a three-dimensional object comprises a controller, a build area configured to receive a layer of particulate material, a printhead, and an ultraviolet light emitting diode energy source. The controller is to cause the printhead to deposit a liquid which absorbs ultraviolet radiation onto the layer of particulate material. The controller is further to cause the ultraviolet light emitting diode energy source to irradiate the liquid, after the liquid has been deposited onto the layer of particulate material, thereby to heat the liquid and cause a portion of the particulate material to solidify.

公开(公告)号：US20250012703A1

公开(公告)日：2025-01-09

申请号：US18702172

申请日：2021-10-29

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

Inventor： Yang Lei ,  Joshua M. Yu ,  Timothy Merritt Holt ,  Angela Bakkom

IPC: G01N15/1031 ,  G01N15/01 ,  G06V20/69

Abstract: A non-limiting example method for control of fluid ejection from a microfluidic device includes firing a microfluidic ejector of a microfluidic device to expel a fluid from a channel of the microfluidic device. In response to detecting an instance of signal change from an impedance sensor disposed in the channel, the method includes controlling fluid ejection from the microfluidic ejector and capturing an image of the channel with an imaging apparatus. Using the captured image, a determination is made as to whether passage of a cell into the channel is associated with the instance of signal change from the impedance sensor. Based on the determination, the microfluidic ejector may fire to dispense the fluid from the channel into a reservoir.

公开(公告)号：US12189364B2

公开(公告)日：2025-01-07

申请号：US17417781

申请日：2019-07-12

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

Inventor： Sergio Gonzalez Martin ,  Jordi Gonzalez Rogel ,  Jordi Sanroma Garrit ,  Jordi Raventos Catasus

IPC: G05B19/4099

Abstract: In an example, a method includes receiving, by at least one processor, object model data describing a geometry of at least part of at least one object to be generated using additive manufacturing. The object model data defines a first geometrical transformation to be applied to the object model data. It may be determined if a second geometrical transformation is to be applied to the object model data. If a second geometrical transformation is to be applied, the first and second geometrical transformations may be applied to the object model data to determine modified object model data. Otherwise, the first geometrical transformation may be applied to the object geometry to determine modified object model data.

公开(公告)号：US12189326B2

公开(公告)日：2025-01-07

申请号：US18565834

申请日：2021-10-12

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

Inventor： Jinsam Park ,  Jinhong Kim ,  Seongwoong Yang ,  Youngchae Kim

IPC: G03G21/12 ,  G01F23/292 ,  G03G15/08 ,  G03G21/10

Abstract: Provided is a waste toner container including a housing having a first reservoir and a second reservoir, a light sensor including a light emitting portion and a light receiving portion, and a light guide member to connect the light emitting portion with the light receiving portion. The light guide member includes a first detection portion and a second detection portion each including a pair of optical surfaces that are apart from each other, and the first and second detection portions are provided in the first and second reservoirs, respectively.

公开(公告)号：US20250004395A1

公开(公告)日：2025-01-02

申请号：US18292845

申请日：2021-12-07

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

Inventor： Seungbin Ahn ,  Woongyong Choi ,  Shinhyup Kang

IPC: G03G15/08 ,  G03G15/00 ,  G03G21/16

Abstract: A toner refill cartridge includes a body member in which a toner is contained and which includes a toner discharge port through which the toner is discharged: a driving power input portion rotatable by a driving power from outside the toner refill cartridge; an agitating member to agitate the toner while being rotated by a rotation power from the driving power input portion; and a discharge completion display module including a moving display portion to move in response to the rotation power from the driving power input portion, and a fixed display portion whose position is fixed with respect to the body member, the discharge completion display module to indicate whether the toner contained in the body member has been completely discharged, based on a position relationship of the moving display portion with respect to the fixed display portion.

公开(公告)号：US20250001423A1

公开(公告)日：2025-01-02

申请号：US18292849

申请日：2021-08-05

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

Inventor： Rajesh Kelekar

IPC: B01L7/00 ,  C12Q1/686 ,  G01N21/64

Abstract: A device includes at least one well to receive a polymerase chain reaction (PCR) mixture with the at least one well including a bottom and side walls. The bottom includes an electrically resistive sheet including at least one opening and to receive a signal from a signal source to generate heat to cause a pulse-controlled amplification, thermal cycling zone in close thermal proximity to the resistive sheet. The side walls comprise a polymer material and a fluoropolymer component to cause the PCR mixture to form a contact angle of at least 45 degrees relative to the side walls. An optical detector is alignable with the at least one opening to detect fluorophores as an output of the PCR mixture.

公开(公告)号：US12184489B1

公开(公告)日：2024-12-31

申请号：US18352056

申请日：2023-07-13

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

Inventor： Peter Siyuan Zhang ,  Srinath Balaraman ,  Hsin Chin Lin

IPC: H04L41/0816

Abstract: An example non-transitory machine-readable storage medium includes instructions executable by a processing resource of an electronic device. The instructions cause the electronic device to receive a communication associated with a first mode of communication via the communication device and determine an intent to change from the first mode of communication to a second mode of communication. In response to determining the intent, the instructions cause the electronic device to determine that a communication device associated with the second mode of communication is not in a ready state and assist the communication device associated with the second mode of communication to be in the ready state.

公开(公告)号：US12182281B2

公开(公告)日：2024-12-31

申请号：US17730067

申请日：2022-04-26

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

Inventor： Jefferson P. Ward ,  Jesse Otto Sutherland, III ,  Peter Le Chevallier

IPC: G06F21/44 ,  G03G15/00 ,  G03G15/08 ,  G03G21/18 ,  G06F21/60

Abstract: A logic circuitry package for a replaceable print apparatus component includes a logic circuit and an interface to communicate with a print apparatus logic circuit. The logic circuit is configured to include a plurality of personalities, each personality of the plurality of personalities including an ID and a cryptographic key. The logic circuit is further configured to start a cryptographic session with the print apparatus logic circuit using a selected personality of the plurality of personalities, and transmit a consumable level value to the print apparatus logic circuit in response to a request from the print apparatus logic circuit independent of which personality of the plurality of personalities is the selected personality.

公开(公告)号：US12181805B2

公开(公告)日：2024-12-31

申请号：US18392873

申请日：2023-12-21

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

Inventor： Mok-Hwa Lim ,  Hyeonseung Lee ,  Jang-Geun Kim ,  Jincheol Kim ,  ByeongNo Jeong ,  Sungchul Ahn

IPC: G03G15/08 ,  G03G15/00 ,  G03G21/18

Abstract: A toner cartridge includes a customer replaceable unit monitoring (CRUM) apparatus to store error information of a toner injection process of the toner cartridge using a toner refill apparatus. Based on the error information not being stored in the CRUM apparatus, an availability of a refill operation of the toner cartridge is identified based on a predetermined first reference value and an amount of toner detected in the toner cartridge, and, based on the error information being stored in the CRUM apparatus, the availability of the refill operation of the toner cartridge is identified based on a predetermined second reference value and the amount of toner detected in the toner cartridge.