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:
May. 05, 2009
Filed:
Dec. 28, 2005
Toshimasa Mori, Suwa, JP;
Toshimasa Mori, Suwa, JP;
Seiko Epson Corporation, , JP;
Abstract
There is provided an initial filling method for a functional liquid droplet ejection head in which a filling liquid consisting essentially of a functional liquid or a solvent thereof is initially filled in a passage of a functional liquid drop-let-ejection-head for ejecting a functional liquid droplet on a workpiece. The method includes: a sealing step of sealing a functional liquid introducing port of the functional liquid droplet ejection head communicating with the passage of the head; an immersing step of immersing a head main body of the functional liquid droplet ejection head in the filling liquid stored in a sealed vessel; a pressure-reducing step of reducing pressure inside the sealed vessel to a predetermined degree of vacuum by exhausting the atmosphere inside the sealed vessel; and a pressure-restoring step of restoring the pressure inside the sealed vessel after the pressure-reducing step.