Title:
LIQUID CIRCULATION DEVICE AND LIQUID DISCHARGE DEVICE
Document Type and Number:
Japanese Patent JP2023109066
Kind Code:
A
Abstract:
To provide a liquid circulation device and a liquid discharge device which can determine clogging of a filter.SOLUTION: A liquid circulation device includes a first pump, a second pump, a filter, a buffer tank, a pressure sensor, and a control part. The first pump supplies liquid of a liquid supply tank to a liquid discharge head. The second pump recovers the liquid from the liquid discharge head, and supplies the liquid to the liquid supply tank. The filter is provided on a flow channel between the liquid supply tank and the liquid discharge head. The buffer tank is connected to a flow channel between the filter and the liquid discharge head, and a flow channel between the liquid discharge head and the second pump, and the liquid discharged from the first pump is flowed thereto. The pressure sensor detects a pressure in the buffer tank. The control part determines clogging of the filter on the basis of a drive voltage of the second pump during adjustment circulation of adjusting a nozzle surface pressure of the liquid discharge head on the basis of the pressure of the buffer tank.SELECTED DRAWING: Figure 2
Inventors:
MIURA SATOSHI
Application Number:
JP2022010448A
Publication Date:
August 07, 2023
Filing Date:
January 26, 2022
Export Citation:
Assignee:
TOSHIBA TEC KK
International Classes:
B41J2/175; B41J2/01; B41J2/18
Attorney, Agent or Firm:
Patent Attorney Corporation Suzue Patent General Office
Masatoshi Kurata
Tadashi Inoue
Takashi Mine
Naoki Kawano
Sanae Kaneko
Masatoshi Kurata
Tadashi Inoue
Takashi Mine
Naoki Kawano
Sanae Kaneko