Title:
インクジェットヘッド及びインクジェット記録装置
Document Type and Number:
Japanese Patent JP6607197
Kind Code:
B2
Abstract:
The purpose of the present invention is to minimize the degradation of ink ejection performance by providing a circulation flow path and to effectively discharge air bubbles and the like near a nozzle without applying a load to a device. This inkjet head (1) is characterized in that: the inkjet head (1) is provided with a plurality of nozzles (211) for ejecting ink, a pressure chamber (231) individually communicated with the nozzles (211) and filled with ink, a pressure-generating means (piezoelectric element 24) as a driving source for discharging ink by applying pressure to the pressure chamber (231), an inlet (232) supplying ink to the pressure chamber (231) and having a constricted portion in which the flow path is narrower than the pressure chamber (231), and a circulation flow path (213) capable of discharging ink in the pressure chamber (231) from the vicinity of the nozzles (211); the viscosity resistance of the circulation flow path (213) is lower than the viscosity resistance of the nozzles (211); and the impedance of the circulation flow path (213) is at least half the impedance of the inlet (232).
Inventors:
Takashi Matsuo
Hideyuki Kobayashi
Kusunoki Higashino
Hideyuki Kobayashi
Kusunoki Higashino
Application Number:
JP2016569529A
Publication Date:
November 20, 2019
Filing Date:
January 15, 2016
Export Citation:
Assignee:
Konica Minolta Co., Ltd.
International Classes:
B41J2/14; B41J2/175; B41J2/18
Domestic Patent References:
| JP2013116571A | ||||
| JP2004195959A | ||||
| JP2011520671A | ||||
| JP6340066A |
Attorney, Agent or Firm:
Gwangyang International Patent Office