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:
May. 19, 2020
Filed:
Oct. 10, 2018
Canon Kabushiki Kaisha, Tokyo, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
An ink tank is used for an ink jet recording apparatus and includes an ink storage bag storing an ink, and the ink storage bag has no mechanism for allowing a side wall portion to shrink into a preliminary defined shape but has a side wall portion to shrink as the ink flows out. The ink tank has no mechanism for adjusting the pressure in the ink storage bag, the ink storage bag is made from a polyolefin resin, the ink is an aqueous ink containing a coloring material and a resin, and the resin contained in the ink has a glass transition temperature higher than the glass transition temperature of the polyolefin resin constituting the ink storage bag. An ink jet recording apparatus includes the ink tank and a recording head that eject an ink supplied from the ink tank by an ink jet method.