Invention Grant
- Patent Title: Liquid discharge head and liquid discharge method
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Application No.: US17684995Application Date: 2022-03-02
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Publication No.: US11667132B2Publication Date: 2023-06-06
- Inventor: Yoshiyuki Nakagawa , Shintaro Kasai , Shuzo Iwanaga , Akiko Hammura , Koichi Ishida , Takatsugu Moriya
- Applicant: CANON KABUSHIKI KAISHA
- Applicant Address: JP Tokyo
- Assignee: Canon Kabushiki Kaisha
- Current Assignee: Canon Kabushiki Kaisha
- Current Assignee Address: JP Tokyo
- Agency: Canon U.S.A., Inc. I.P. Division
- Priority: JP 16002949 2016.01.08 JP 16239417 2016.12.09
- The original application number of the division: US16410375 2019.05.13
- Main IPC: B41J2/18
- IPC: B41J2/18 ; B41J2/14 ; B41J2/01

Abstract:
A liquid discharge head includes: a substrate, where a recording element is disposed; and a discharge orifice forming member, where a discharge orifice, facing the recording element, and configured to discharge the liquid, is formed. The liquid discharge head has a pressure chamber, a first liquid channel configured to supply liquid to the pressure chamber, and a second liquid channel configured to recover liquid from the pressure chamber. The substrate has a liquid supply channel connected to the first liquid channel to supply liquid to the first liquid channel, and a liquid recovery channel connected to the second liquid channel, to recover liquid from the second liquid channel. Pressure at an inlet portion of the liquid supply channel is higher than pressure at an outlet portion of the liquid recovery channel, and a flow velocity of liquid within the pressure chamber is 3 to 140 mm/s.
Public/Granted literature
- US20220184968A1 LIQUID DISCHARGE HEAD AND LIQUID DISCHARGE METHOD Public/Granted day:2022-06-16
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