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Details

Veröffentlichungs-Nr.

EP4786186

Anmeldetag

15. Januar 2026

Veröffentlichung

5. August 2026

Rechtsraum

EP

IPC

B41J2/14

Abstract

A liquid ejection head includes nozzles for ejecting a liquid, pressure chambers communicating with the nozzles, a supply-side flow path, an ejection-side flow path, and piezoelectric elements. When a viscous resistance of each nozzle is Rn, an inertial resistance of each nozzle is Mn, a meniscus compliance of each nozzle is Cn, viscous and inertial resistances of the supply-side flow path are Rm1 and Mml, viscous and inertial resistances from the supply-side flow path to each nozzle are Rc1 and Mc1, viscous and inertial resistances from each nozzle to the ejection-side flow path are Rc2 and Mc2, and resistance and inertial resistances of the ejection-side flow path are Rm2 and Mm2, and M=Mn+1/(1/Mc1+1/Mc2)+1/(1/Mm1+1/Mm2), R=Rn+1/(1/Rc1+1/Rc2)+1/(1/Rm1+1/Rm2), ω=(M×C<n>)<-1/2>, and γ=R/2/M, 0.2≤γ<2>/ω<2>≤1.0 is satisfied.

Anmelder

Firma

RISO Technologies Corporation

Land

🇯🇵 Japan

Fachgebiete