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. 17, 1996
Filed:
Jul. 22, 1994
Applicant:
Inventors:
Mitsuru Kurata, Kawasaki, JP;
Tokihide Ebata, Kawasaki, JP;
Noribumi Koitabashi, Yokohama, JP;
Hiromitsu Hirabayashi, Yokohama, JP;
Hitoshi Sugimoto, Yokohama, JP;
Haruo Uchida, Yokohama, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B41J / ;
U.S. Cl.
CPC ...
347 87 ;
Abstract
An ink jet head cartridge includes a recording head for ejecting ink; an ink container for containing the ink to be supplied to the recording head; an ink supply port for supplying the ink from the container to the head; a porous ink absorbing material disposed in the container and having a ring shape with a central opening; and an engaging portion engaging with the central opening wherein the absorbing material has a higher density proximate to the supply port than proximate to the engaging portion.