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:
Aug. 28, 2012
Filed:
Aug. 30, 2007
Michihiko Namba, Yokohama, JP;
Akihiko Matsuyama, Isehara, JP;
Naoya Morohoshi, Numazu, JP;
Tohru Ohshima, Atsugi, JP;
Masayuki Koyano, Zama, JP;
Akihiko Gotoh, Atsugi, JP;
Kiyofumi Nagai, Machida, JP;
Michihiko Namba, Yokohama, JP;
Akihiko Matsuyama, Isehara, JP;
Naoya Morohoshi, Numazu, JP;
Tohru Ohshima, Atsugi, JP;
Masayuki Koyano, Zama, JP;
Akihiko Gotoh, Atsugi, JP;
Kiyofumi Nagai, Machida, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
To provide an ink for inkjet recording containing water, water-soluble organic solvent, water-dispersible resin, fluorochemical surfactant or derivative thereof, and coloring agent containing pigment, wherein the ink has a surface tension of 20-35 mN/m and viscosity of 5 mPa·s or more at 25° C., total amount of the water-dispersible resin and the coloring agent in the ink is 5-40% by mass, and mass ratio A/B of the water-dispersible resin A to the coloring agent B is 0.5-4, wherein the ink is applied for a recording medium for inkjet recording containing a support containing cellulose pulp, and one or more barrier layers disposed on at least one face of the support, and wherein the barrier layer contains 30% by mass or more of inorganic pigment having refractive index of 1.5 or more, excluding aluminum hydrate, and 10% by mass or less of an inorganic pigment having a refractive index of less than 1.5.