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. 30, 2007
Filed:
Aug. 19, 2004
Yuki Ogasawara, Hino, JP;
Akihiko Takeda, Sagamiko-machi, JP;
Daisuke Ishibashi, Hino, JP;
Konica Minolta Holdings, Inc., Tokyo, JP;
Abstract
An ink containing water, a water-soluble organic solvent and a colorant, wherein the ink exhibits a (γ cos θ)value of 4 to 6, and satisfies Formula (I): 0.3≦((γ' cos θ′)/(γ cos θ))≦0.85, wherein γ represents a surface tension (mN/m) of the ink upon initial exposure to atmospheric conditions, θ represents an initial contact angle of the ink with respect to plain paper upon initial exposure to atmospheric conditions; and γ′ represents a surface tension (mN/m) of the ink after standing for one hour at 40° C. and relative humidity of 2 percent, and θ′ represents an initial contact angle of the ink with respect to plain paper after standing for one hour at 40° C. and relative humidity of 2 percent.