公开(公告)号：US20230052524A1

公开(公告)日：2023-02-16

申请号：US17792260

申请日：2020-01-28

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

Inventor： Robert YRACEBURU ,  Elliott Michael DOWNING ,  Jody Lee CLAYBURN

IPC: B41J2/175

Abstract: A fluid level sensing system includes: a sensor electrode to extend into a fluid reservoir, the sensor electrode including (i) a first segment of a first material having a first conductivity, and (ii) a second segment of a second material having a second conductivity; and a controller connected to the sensor electrode, to: detect a response from the sensor electrode to an input applied to the fluid reservoir; and determine, based on the response, which of the first and second segments are in contact with fluid in the fluid reservoir.