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US 6,637,875 B2Granted
Aqueous recording liquid, recording method and apparatus using same
AssigneeRicoh Company, Ltd.
InventorsTetsuya Kaneko, Hitoshi Arita, Kiyofumi Nagai, Kakuji Murakami
Life of this patent
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Abstract
An aqueous recording liquid suitable for use in ink jet printing containing a colorant, 2,2,4-trimethyl-1,3-pentanediol, and at least one surfactant selected from polyoxyethylene alkyl ethers and polyoxyethylene alkyl ether acetates.
Claims24
An aqueous recording liquid comprising a colorant, 2,2,4-trimethyl-1,3-pentanediol, and at least one surfactant selected from the group consisting of a polyoxyethylene alkyl ether represented by formula (1):
- R1O(CH2CH2O)pH (1)
- wherein R1 represents a straight or branched alkyl group having 8 to 14 carbon atoms and p represents an integer of 1 to 30, and a polyoxyethylene alkyl ether acetate represented by formula (2):
- R2O(CH2CH2O)qCH2COOM (2)
- wherein R2 represents a straight or branched alkyl group having 8 to 14 carbon atoms, q represents an integer of 3 to 8, and M represents an alkali metal ion, a quaternary ammonium, a quaternary phosphonium or an alkanolamine.
1 more element
Dependencies are inferred from the claim text.