公开(公告)号：US20180215150A1

公开(公告)日：2018-08-02

申请号：US15748285

申请日：2015-10-30

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

Inventor： Vincent C. KORTHUIS ,  Eric T. MARTIN ,  Michael W. CUMBIE ,  Scott A. LINN

IPC: B41J2/14 ,  B41J2/175

CPC classification number: B41J2/14056 ,  B41J2/1404 ,  B41J2/175 ,  B41J2/17596 ,  B41J2002/14467 ,  B41J2202/11 ,  B41J2202/12

Abstract: According to an example, a printing system may include a drop ejecting element and a fluid circulating element corresponding to the drop ejecting element. The printing system may also include a logic device that is to receive a data stream addressed to the drop ejecting element, determine whether the data stream indicates that the drop ejecting element is to be energized, and in response to a determination that the data stream does not indicate that the drop ejecting element is to be energized, energize the fluid circulating element.

公开(公告)号：US20240051292A1

公开(公告)日：2024-02-15

申请号：US18266803

申请日：2021-01-11

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

Inventor： Vincent C. KORTHUIS ,  Rogelio CICILI ,  Eric T. MARTIN ,  Kellie Susanne JENSEN ,  James R. PRZYBYLA

IPC: B41J2/045

CPC classification number: B41J2/0458 ,  B41J2/04541 ,  B41J2/04543

Abstract: In some examples, a fluidic die includes fluidic actuators, switches, and electrically conductive lines in an electrically conductive layer of the fluidic die. The electrically conductive lines electrically connect the switches to respective actuators. A first dimension of a first electrically conductive line is different from a second dimension of a second electrically conductive line to match a first resistance of the first electrically conductive line having a first length to a second resistance of the second electrically conductive line having a second length different from the first length.

公开(公告)号：US20250130084A1

公开(公告)日：2025-04-24

申请号：US18691815

申请日：2021-09-14

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

Inventor： Daryl Eugene ANDERSON ,  Eric T. MARTIN

IPC: G01F1/696 ,  G05D7/06

Abstract: In some examples, a fluid flow meter for a conduit to carry a fluid, includes a first voltage connection point, a second voltage connection point, and a heater. The fluid flow meter includes a plurality of resistive sensors comprising a first resistive sensor on a first side of the heater and a second resistive sensor on a second side of the heater, wherein the first resistive sensor and the second resistive sensor are connected in series between the first voltage connection point and the second voltage connection point, wherein a sense connection point between the first resistive sensor and the second resistive sensor is to output a sense voltage that provides an indication of a fluid flow in the conduit.