Invention Grant
- Patent Title: Printhead-integrated ink level sensor with central clearing resistor
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Application No.: US15761621Application Date: 2015-11-10
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Publication No.: US10532579B2Publication Date: 2020-01-14
- Inventor: Boon Bing Ng , Patrick Leonard , Raymond Connolly
- Applicant: Hewlett-Packard Development Company, L.P.
- Applicant Address: US TX Spring
- Assignee: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
- Current Assignee: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
- Current Assignee Address: US TX Spring
- Agency: HP Inc. Patent Department
- International Application: PCT/US2015/060006 WO 20151110
- International Announcement: WO2017/082886 WO 20170518
- Main IPC: B41J2/175
- IPC: B41J2/175 ; G01F23/26 ; B41J2/14

Abstract:
The present subject matter relates to printhead-integrated ink level sensor (PILS) system. In an example implementation, the PILS system includes a sense capacitor plate in a fluid sensing chamber to sense a level of fluid in the fluid sensing chamber. The fluid sensing chamber is in fluid communication with a fluid reservoir of the printhead to receive fluid from the fluid reservoir. The sense capacitor plate includes at least one slot. The PILS system further includes at least one central clearing resistor and at least one peripheral clearing resistor to clear the fluid sensing chamber of the fluid. The central clearing resistor is provided in the at least one slot of the sense capacitor plate. The at least one peripheral resistor is provided in the fluid sensing chamber surrounding the sense capacitor plate.
Public/Granted literature
- US20180354271A1 PRINTHEAD-INTEGRATED INK LEVEL SENSOR WITH CENTRAL CLEARING RESISTOR Public/Granted day:2018-12-13
Information query
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