LIQUID EJECTION HEAD, LIQUID EJECTION DEVICE AND FLUID EJECTION MODULE Russian patent published in 2020 - IPC B41J2/00 

FIELD: machine building.

SUBSTANCE: use: for ejection of liquid. Essence of the invention consists in the fact that the fluid ejection head comprises a pressure chamber configured to allow the first fluid and the second liquid to flow inside; a pressure generating member configured to apply pressure to the first fluid; and ejection hole configured to eject second fluid, wherein the liquid ejection head is configured to create a second fluid flow from the side closer to the ejection port than the first fluid flow, in contact with the first fluid in the pressure chamber, the first liquid and the second liquid flow in the same direction and the current first liquid and the second liquid in the pressure chamber satisfy condition 0.0 < 0.44 (Q₂/Q₁)^-0.322(η₂/η₁)^-0.109 < 1.0, where η₁ is coefficient of viscosity of first fluid, η₂ is coefficient of viscosity of second fluid, Q₁ is flow rate of first fluid, and Q₂ is flow rate of second fluid.

EFFECT: technical result is possibility of stabilization of interface between ejected and bubbling media.

20 cl, 43 dwg