The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 17, 2009
Filed:
Jul. 28, 2005
Hiroshi Mataki, Kanagawa, JP;
Hiroshi Mataki, Kanagawa, JP;
FUJIFILM Corporation, Tokyo, JP;
Abstract
The liquid ejection head comprises: a nozzle through which liquid is ejected; a pressure chamber which stores the liquid ejected through the nozzle; a pressurizing device which changes a volume of the pressure chamber to apply pressure to the liquid stored in the pressure chamber; and a supply port through which the liquid is supplied to the pressure chamber, wherein the liquid ejection head has a structure such that inertance Mn of the nozzle, liquid resistance Rn of the nozzle, compliance Cn caused by a surface tension of the liquid in the nozzle, inertance Ms of the supply port, and liquid resistance Rn of the supply port satisfy the following inequality: so that oscillation of a meniscus surface located in vicinity of the nozzle is controlled at a time of refill when the liquid is filled in the pressure chamber through the supply port after the liquid is ejected from the nozzle.