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:
Sep. 03, 2002
Filed:
Apr. 27, 2000
Hiroki Hayashi, Kawasaki, JP;
Shozo Hattori, Tokyo, JP;
Hajime Yamamoto, Yokohama, JP;
Eiichiro Shimizu, Yokohama, JP;
Teruo Arashima, Kawasaki, JP;
Masaru Iketani, Atsugi, JP;
Hiroshi Koshikawa, Kawasaki, JP;
Kenji Kitabatake, Kawasaki, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A liquid ejection head cartridge includes a head portion for ejecting liquid; a liquid supply portion for supplying the liquid to the recording head portion; an air vent for fluid communication with ambience and a negative pressure producing member accommodating container accommodating a negative pressure producing member capable of retaining liquid therein; a liquid reservoir having a liquid reservoir portion for containing liquid and constituting a substantially sealed space except for a communication portion with the negative pressure producing member accommodating container; a container holder for holding the liquid reservoir and the negative pressure producing member accommodating container which are in fluid communication with each other through the communicating portion and having a liquid supply path to the recording head from a liquid supply portion of the negative pressure producing member accommodating container; wherein the recording head portion, the negative pressure producing member accommodating container and the liquid reservoir are independently separable from the container holder.