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US 8,093,311 B2Granted
Ink for ink-jet recording
AssigneeBrother Kogyo Kabushiki Kaisha
InventorsAkiko Noguchi, Takashi Kawaguchi
Life of this patent
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Abstract
A pigment ink for ink-jet recording which is excellent in freezing resistance and fixability includes a pigment, an aqueous resin emulsion, polyethylene glycol and diethylene glycol. This ink satisfies the following formulae (1), (2) and (3): A<15 (1) A+B>10 (2) 30≦A×α+B≦64 (3) wherein: A is the content of polyethylene glycol (%); B is the content of diethylene glycol (%); and α is the molecular weight ratio of polyethylene glycol to diethylene glycol.
Claims10
An ink for ink-jet recording comprising:
- a pigment;
- an aqueous resin emulsion;
- a polyethylene glycol;
- and
- diethylene glycol;
- wherein the following formulae (1), (2) and (3) are satisfied:
- A<15 (1)
- A+B>10 (2)
- 30≦A×α+B≦64 (3)
- wherein:
- A is a content of polyethylene glycol (mass % by mass of the ink);
- B is a content of diethylene glycol (mass % by mass of the ink);
- and
- α is a molecular weight ratio of polyethylene glycol to diethylene glycol;
- and
- wherein the aqueous resin emulsion is present, as a resin solid content, in an amount of from 6 mass % to 10 mass %, inclusive, by mass of the ink.
13 more elements
Dependencies are inferred from the claim text.