LIQUID DISCHARGE HEAD, LIQUID DISCHARGE DEVICE AND LIQUID SUPPLY METHOD Russian patent published in 2018 - IPC B41J1/02 

FIELD: printing equipment.

SUBSTANCE: provided is a liquid discharge head comprising: a discharge port; a flow path in which energy generating elements are arranged; discharge port portion communicating the discharge port to the flow path; a supply flow path for flowing liquid from outside into the flow path and a flowing-out flow path for flowing liquid from the flow path to the outside, wherein the liquid discharge head satisfies a relational expression of H^-0.34×P^-0.66×W>1.7, where a height of the flow is designated as H, a length of the discharge port portion is designated as P, and a length of the discharge port portion is designated as W.

EFFECT: present invention is to solve the above problems, the flow path in a configuration to flow the liquid, the liquid discharge capable of suppressing a change in the quality of the liquid at the discharge opening neighbourhood between the discharge port and the energy generating element head, and to provide a method of supplying a liquid ejection apparatus and a liquid.

23 cl, 54 dwg