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:
Jan. 11, 2005
Filed:
Nov. 10, 2003
Applicants:
Kiyomitsu Kudo, Tokyo, JP;
Toshihiko Ujita, Kanagawa, JP;
Suguru Taniguchi, Tokyo, JP;
Inventors:
Assignee:
Canon Kabushiki Kaisha, , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B41J 2175 ;
U.S. Cl.
CPC ...
Abstract
A covering member is installed on the upper face of a liquid storing chamber, which further covers a communicating for covering a gas-liquid separation member. For the ink jet cartridge, given the length of each of paths from the gas-liquid separation member to the atmosphere communication port as Ln, and the sectional area of each path as Sn, and then, the diffusion resistance R=Σ(Ln/Sn), and the coefficient K=10,000 (mg.mm/mm), it is arranged to set the Ln and Sn to satisfy the K/V<R<2,000, provided that the total weight of liquid filled in the liquid storing chamber is V.