公开(公告)号：US20180222203A1

公开(公告)日：2018-08-09

申请号：US15748301

申请日：2015-10-30

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

Inventor： James R. PRZYBYLA ,  Zhizhang CHEN

IPC: B41J2/16 ,  B41J2/14

CPC classification number: B41J2/1646 ,  B41J2/14016 ,  B41J2/1408 ,  B41J2/14088 ,  B41J2/14112 ,  B41J2/14129 ,  B41J2/1603 ,  B41J2/1629 ,  B41J2/1631 ,  B41J2/1634 ,  B41J2/1642

Abstract: According to an example, a fluid ejection device may include a substrate, a resistor positioned on the substrate, an overcoat layer positioned over the resistor, a fluidics layer having surfaces that form a firing chamber about the resistor, in which the overcoat layer is positioned between the resistor and the firing chamber, and a thin film membrane covering the surfaces of the fluidics layer that form the firing chamber and a portion of the overcoat layer that is in the firing chamber.

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.