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:
Jul. 04, 2006
Filed:
Mar. 12, 2004
Masashi Ogawa, Kanagawa, JP;
Yasuo Kotaki, Kanagawa, JP;
Wataru Takahashi, Kanagawa, JP;
Hiromasa Anma, Kanagawa, JP;
Masashi Ogawa, Kanagawa, JP;
Yasuo Kotaki, Kanagawa, JP;
Wataru Takahashi, Kanagawa, JP;
Hiromasa Anma, Kanagawa, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An ink jet recording head cartridge has a liquid container for retaining a liquid, a discharge circuit section which comprises a supply port for receiving the liquid in the liquid container, a nozzle in communication with the supply port, and a discharge energy generating element, provided in the nozzle, for discharging the liquid; and a flow path for leading the liquid from the liquid container to the discharge circuit section, wherein the flow path comprises a vertical portion extending from a portion connecting to the ink container, and a horizontal portion connecting to a lower end of the vertical portion and connecting to the supply port of the discharge circuit section, a throttle portion whose width becomes narrower in a supply direction of the liquid is formed in a portion, which connects to the vertical portion, of the horizontal portion of the flow path, and a groove shaped flow path whose width is narrower than the total width of the flow path is contiguously formed on an inner wall of the flow path from a portion connecting to the liquid container to a portion connecting to the discharge circuit section.