公开(公告)号：US20220126594A1

公开(公告)日：2022-04-28

申请号：US17570497

申请日：2022-01-07

申请人： Yuuichiroh UEMATSU ,  Ryohki WAKASA ,  Atsushi MORI

发明人： Yuuichiroh UEMATSU ,  Ryohki WAKASA ,  Atsushi MORI

IPC分类号： B41J2/18 ,  B41J2/14

摘要： 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.

公开(公告)号：US20200376842A1

公开(公告)日：2020-12-03

申请号：US16869914

申请日：2020-05-08

申请人： Yuuichiroh UEMATSU ,  Ryohki WAKASA ,  Atsushi MORI

发明人： Yuuichiroh UEMATSU ,  Ryohki WAKASA ,  Atsushi MORI

IPC分类号： B41J2/14 ,  B41J2/175

摘要： 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.