Invention Grant
- Patent Title: Liquid circulation device, liquid discharge apparatus, and liquid circulation method
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Application No.: US17570497Application Date: 2022-01-07
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Publication No.: US11667131B2Publication Date: 2023-06-06
- Inventor: Yuuichiroh Uematsu , Ryohki Wakasa , Atsushi Mori
- Applicant: Yuuichiroh Uematsu , Ryohki Wakasa , Atsushi Mori
- Applicant Address: JP Kanagawa
- Assignee: RICOH COMPANY, LTD.
- Current Assignee: RICOH COMPANY, LTD.
- Current Assignee Address: JP Tokyo
- Agency: Harness, Dickey & Pierce, P.L.C.
- Priority: JP 2019102584 2019.05.31
- The original application number of the division: US16869914 2020.05.08
- Main IPC: B41J2/18
- IPC: B41J2/18 ; B41J2/14 ; B41J2/175

Abstract:
A liquid circulation device includes a circulation passage, a liquid feeding device, a pressure sensor, and control circuitry. Through the circulation passage, liquid circulates to be supplied to and collected from a circulatory liquid discharge head. The liquid feeding device is configured to circulate the liquid through the circulation passage. The pressure sensor is configured to detect a pressure of the circulation passage. The control circuitry configured to acquire a characteristic indicating a relationship among a drive amount of the liquid feeding device, discharge information of the liquid discharged from the liquid discharge head, and a pressure detection value of the circulation passage; and change, based on the characteristic acquired, at least one of a control parameter and a calculation expression used to control the liquid feeding device.
Public/Granted literature
- US20220126594A1 LIQUID CIRCULATION DEVICE, LIQUID DISCHARGE APPARATUS, AND LIQUID CIRCULATION METHOD Public/Granted day:2022-04-28
Information query
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