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. 13, 2007
Filed:
Dec. 19, 2005
Masahiko Kubota, Tokyo, JP;
Wataru Hiyama, Kanagawa, JP;
Masahiko Kubota, Tokyo, JP;
Wataru Hiyama, Kanagawa, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A liquid discharge head includes a heater provided on an element substrate, a nozzle including a discharge port portion having a discharge port for discharging a liquid droplet, a bubbling chamber, a supply path for supplying liquid to the bubbling chamber, a supply chamber for supplying the liquid to the nozzle and an orifice substrate. The bubbling chamber includes a first bubbling chamber and a second bubbling chamber above the first bubbling chamber, and the discharge port portion communicates with the second bubbling chamber via a stepped portion. A side wall of the second bubbling chamber converges toward the discharge port with an inclination of 10 to 45 degrees. The nozzle is provided with a control portion including a stepped portion in the flow path near the bubbling chamber. A maximum height of the flow path is smaller than a height of a lower surface of the discharge port portion.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile