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:
Jun. 07, 2011
Filed:
Oct. 16, 2008
Yoshiyuki Nagase, Kawasaki, JP;
Teruaki Okuda, Tokyo, JP;
Takeshi Hara, Kawasaki, JP;
Takeshi Oota, Kawasaki, JP;
Hirokazu Hyakuda, Wakayama, JP;
Yoshiyuki Nagase, Kawasaki, JP;
Teruaki Okuda, Tokyo, JP;
Takeshi Hara, Kawasaki, JP;
Takeshi Oota, Kawasaki, JP;
Hirokazu Hyakuda, Wakayama, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An ink jet recording medium comprising a substrate and an ink receiving layer which is provided on at least one surface of the substrate and contains inorganic fine particles having an average secondary particle size of 1-4 μm as measured by a Coulter counter method in an amount of 0.2-2.0 g/min terms of solid content mass. The ink receiving layer satisfies the following conditions with respect to a pore distribution curve as determined by a nitrogen adsorption method: (1) total pore volume in a pore size range of 10-30 nm is 0.25 ml/g or more, (2) total pore volume in a pore size range of 30-70 nm is 0.1 ml/g or more, and (3) volume ratio of the total pore volume in the pore size range of 10-30 nm to the total pore volume in the pore size range of 30-70 nm is from 1:0.4 to 1:1.