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:
Apr. 14, 1998
Filed:
Sep. 05, 1996
Takashi Hirasa, Yokohama, JP;
Hiroshi Takimoto, Yokohama, JP;
Makoto Ishizu, Chigasaki, JP;
Katsuji Honda, Chigasaki, JP;
Mitsubishi Chemical Corporation, Tokyo, JP;
Abstract
Disclosed is a recording liquid comprising a carbon black dispersed in an aqueous medium, which is characterized in that a toluene extract of the carbon black has an absorbance of 0.05 or less at .lambda.max within the range of from 330 nm to 340 nm or at 337.5 nm when the toluene extract does not have .lambda.max within the range of from 330 nm to 340 nm. The recording liquid can be used in ink-jet recording in high safety. During and after long storage of the recording liquid, the carbon black does not precipitate out. Using the recording liquid, reliable recording can be attained with good jettable durability of the liquid. Even when the recording liquid is recorded onto ordinary papers, high-quality images with good water-fastness and good light-fastness can be formed. The recording liquid is especially suitable for thermal ink-jet recording systems.