公开(公告)号：WO2021242232A1

公开(公告)日：2021-12-02

申请号：PCT/US2020/034691

申请日：2020-05-27

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

Inventor： OSBORNE, William Scott ,  SINGH, Kundan ,  HAINES, Paul Mark ,  BERTLES, Sean

IPC: B41J2/175 ,  B41F31/02 ,  B41L27/04

Abstract: The present disclosure is drawn to an ink supply tank for a printer. The ink supply tank includes a main chamber to supply a printer with ink. The main chamber includes a fill port to receive ink during filling and an exchange port to release the ink. A chamber separator device is configured with a fill surface and a vent port. An overflow chamber can be configured with a vent to pass air into the overflow chamber, a first portion of air in the overflow chamber passes through the vent port of the chamber separator device to a feeder chamber to replace a second portion of ink leaving the ink supply tank to feed a print head and the vent port of the chamber separator device to pass a third portion of ink and a second portion of air from the feeder chamber to the overflow chamber.

公开(公告)号：WO2023014359A1

公开(公告)日：2023-02-09

申请号：PCT/US2021/044634

申请日：2021-08-05

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

Inventor： WICKWIRE, Robert S. ,  BERTLES, Sean ,  GONZALES, Curt

IPC: B41J2/175 ,  B41L27/04

Abstract: In example implementations, an apparatus is provided. The apparatus includes a body, a capillary feed on the back side towards a first end of the body, a pair of columnar volumes inside of the body, and an air vent on a second end of the body that is opposite the first end. The capillary feed is inserted between a wall of a printing fluid pen and a side of a porous media of printing fluid in the printing fluid pen. The capillary feed is to receive the printing fluid from a porous media of the printing fluid via fluidic connection. The pair of columnar volumes is to hold conductive elements that are in contact with the printing fluid and connected to a sensor to detect a level of the printing fluid. The air vent is to provide a pressure reference and provide a source of make-up air.

公开(公告)号：WO2021183118A1

公开(公告)日：2021-09-16

申请号：PCT/US2020/021966

申请日：2020-03-11

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

Inventor： BERTLES, Sean ,  HAINES, Paul Mark ,  SINGH, Kundan

IPC: B41J2/165 ,  B41J2/175

Abstract: A coupling assembly can include internal coupling, an external coupling, and a screw. The internal coupling has teeth arranged about a hole, with each tooth radially tapering outwards. The external coupling has slots corresponding to the teeth, which are slidably fittable into the slots. Rotatable insertion of the screw into the hole radially pushes the teeth outwards against the slots, causing deformed mating of the teeth into the slots.