公开(公告)号：US12011931B2

公开(公告)日：2024-06-18

申请号：US17756544

申请日：2019-12-11

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

Inventor： Carlos Chover Lopez ,  Oriol Parera Fiestas ,  Albert Ruzafa Villaret

IPC: B41J2/175

CPC classification number: B41J2/17506

Abstract: A fluid supply device includes a variable fluid volume to contain a supply of fluid and a variable gas volume to receive pressurized gas to pressurize the supply of fluid. A method of monitoring the fluid supply device may include controlling a gas pressure of the pressurized gas to feed the fluid from the fluid volume, the gas pressure varying in a plurality of pressurization cycles; monitoring a parameter of the pressurization cycles; and determining a change in fill state of the fluid volume as a function of the monitored parameter.

公开(公告)号：US20220410576A1

公开(公告)日：2022-12-29

申请号：US17756544

申请日：2019-12-11

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

Inventor： Carlos Chover Lopez ,  Oriol Parera Fiestas ,  Albert Ruzafa Villaret

IPC: B41J2/175

Abstract: A fluid supply device includes a variable fluid volume to contain a supply of fluid and a variable gas volume to receive pressurized gas to pressurize the supply of fluid. A method of monitoring the fluid supply device may include controlling a gas pressure of the pressurized gas to feed the fluid from the fluid volume, the gas pressure varying in a plurality of pressurization cycles; monitoring a parameter of the pressurization cycles; and determining a change in fill state of the fluid volume as a function of the monitored parameter.