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Water base ink for ink-jet recording
   
Document Number
US Patent 7147700
Issued Date
December 12, 2006
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Abstract
A water base ink for ink-jet recording comprises water, self-dispersing type carbon black, an anionic surfactant, and a nonionic surfactant. The anionic surfactant is a surfactant represented by the formula (1) and/or a surfactant represented by the formula (2). The nonionic surfactant is a surfactant represented by the formula (3) or a mixture of a surfactant represented by the formula (4) and a surfactant represented by the formula (5). No ink discharge failure occurs, the long term stability is excellent, and it is possible to obtain a high quality image without any feathering.
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Number of Claims:
15
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Owner
Published
December 12, 2006
Application Number
10/746,429
Filed
December 24, 2003
US Classification
106/31.89  
Int'l Classification
C09D   11/02   (20060101)  
Examiner
Assistant Examiner
Attorney/Law Firm
Priority Data
Dec 27, 2002 [JP] 2002-379952
USPTO Field of Search
106/31.89  
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