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AssigneeCanon Kabushiki Kaisha
InventorsShinichi Tochihara, Hitoshi Sugimoto, Shinichi Sato, Fumihiro Gotoh, Masaya Uetuki
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Provided is an ink for ink-jet recording, comprising a dye, water, and the components (a), (b), and (c) below: (a) at least one surfactant selected from the group consisting of higher alcohol-ethylene oxide adducts represented by General Formula [1], alkylphenol-ethylene oxide adducts represented by General Formula [2], ethylene oxide-propylene oxide copolymers represented by General Formula [3], and acetylene glycol-ethylene oxide adducts represented by General Formula [4], at a content of from 0.1 to 20% by weight; R--O--(CH.sub.2 CH.sub.2 O).sub.n --H 1 where R is alkyl, and n is an integer; ##STR1## where R is alkyl, and n is an integer; ##STR2## where R is alkyl or hydrogen, and n and l are respectively an integer; ##STR3## where m and n are respectively an integer; (b) thiodiglycol; and (c) urea or a derivative thereof.
An ink for ink-jet recording, comprising a dye, water and the components (a), (b), and (c):
An ink-jet recording method comprising the steps of:
A color ink-jet recording method comprising the step of conducting recording by ejecting droplets of ink of two or more colors onto adjacent or superposed positions on a recording medium, said ink comprising a dye, water and the components (a), (b), and (c):
An ink containing at least a dye, a water-soluble organic solvent, and water, said ink further comprising a compound of the formula ##STR27## where R.sub.1, R.sub.2, R.sub.3, and R.sub.4 are respectively hydrogen, an alkyl or alkenyl group of 1 to 4 carbon atoms, or a substituted or unsubstituted phenyl group;
An ink-jet recording method comprising the steps of:
A color ink-jet recording method comprising the step of conducting recording by ejecting droplets of ink of two or more colors onto adjacent or superposed positions on a recording medium, said ink comprising a dye, a water-soluble organic solvent, water, and the compound of the formula ##STR29## where R.sub.1, R.sub.2, R.sub.3, and R.sub.4 are respectively hydrogen, an alkyl or alkenyl group of 1 to 4 carbon atoms, or a substituted or unsubstituted phenyl group;
A color ink-jet recording method in which droplets of two or more color inks are ejected in accordance of pulse signals onto adjacent or superposed positions on a recording medium, said ink comprises a nonionic surfactant in an amount of from 1.0 to 20.0% by weight, the ink ejected for one pulse is in an amount of from 10 to 70 pl, and the feathering rate (A) defined by Equation [I] is in the range of from 2.5 to 3.5:
An color ink-jet recording apparatus which conducts recording by ejecting droplets of two or more color inks onto adjacent or superposed positions on a recording medium, said apparatus comprises a recording means for conducting recording mode, by use of an ink containing a nonionic surfactant in an amount of from 1.0 to 20.0% by weight, by ejecting the ink for one pulse in an amount of from 10 to 70 pl to form ink dots at the feathering rate (A) defined by Equation [I] is in the range of from 2.5 to 3.5:
Dependencies are inferred from the claim text.