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:
Feb. 26, 2008
Filed:
Dec. 28, 2004
Shota Nishi, Kanagawa, JP;
Masato Nakamura, Kanagawa, JP;
Takumi Namekawa, Kanagawa, JP;
Shigeyoshi Hirashima, Kanagawa, JP;
Shota Nishi, Kanagawa, JP;
Masato Nakamura, Kanagawa, JP;
Takumi Namekawa, Kanagawa, JP;
Shigeyoshi Hirashima, Kanagawa, JP;
Sony Corporation, Tokyo, JP;
Abstract
A liquid ejection head including a reusable nozzle cap and head cap unit that prevents ink from leaking during transport and storage. When the liquid ejection head is in use, the nozzle cap can be readily detached from the liquid ejection head without damaging an ejection surface of a nozzle sheet from which ink is ejected. The liquid ejection head can also be used with a large nozzle sheet. The nozzle cap is incorporated in the liquid ejection head that ejects ink in an ink reservoir through nozzles in the nozzle sheet. Stoppers are disposed below the ejection surface of the nozzle sheet to cover the nozzles, thereby preventing ink from leaking. The stoppers are composed of a resilient material that does not adhere to the nozzle sheet and that inhibits ink from passing therethrough.