Ink set, process for forming colored portion and ink-jet recording apparatus
AssigneeCanon Kabushiki Kaisha
InventorsKatsuhiko Takahashi, Shinichi Tochihara, Yutaka Kurabayashi, Hiroshi Tomioka, Masashi Ogasawara
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Abstract
The invention provides an ink set, a process for forming a colored portion and an ink-jet recording apparatus which are used for obtaining higher-quality ink-jet recorded articles. The ink set includes an aqueous ink containing at least an ultrafinely particulate pigment as a coloring material and an aqueous liquid composition containing fine particles, dispersed therein and electrically charged at the surface in a polarity opposite to the ink.
Claims23
An ink set comprising an aqueous ink containing at least an ultrafinely particulate pigment as a coloring material and an aqueous liquid composition containing fine particles dispersed therein and electrically charged at the surface in a polarity opposite to the ink, in a dispersed state.
A process for forming a colored portion, comprising the steps of:
- (i) applying an anionic or cationic aqueous ink containing an ultrafinely particulate pigment as a coloring material to a recording medium;
- and
- (ii) applying an aqueous liquid composition containing fine particles dispersed therein and electrically charged at the surface in a polarity opposite to the ink,
- wherein the ink and the liquid composition are applied so as to come into contact with each other in a liquid state on the surface of the recording medium.
An ink-jet recording apparatus comprising a first recording unit equipped with a container part which contains an anionic or cationic aqueous ink containing an ultrafinely particulate pigment as a coloring material and an ink-jet head for ejecting the ink, and a second recording unit equipped with an aqueous liquid composition container part which contains a liquid composition containing fine particles dispersed therein and electrically charged at the surface in a polarity opposite to the ink and an ink-jet head for ejecting the liquid composition.
An ink-jet recording apparatus comprising an ink container part which contains an anionic or cationic aqueous ink containing an ultrafinely particulate pigment as a coloring material, a liquid composition container part which contains an aqueous liquid composition containing fine particles dispersed therein electrically charged at the surface in a polarity opposite to the ink and ink-jet heads for independently ejecting the ink contained in the ink container part and the liquid composition contained in the liquid composition container part.
Dependencies are inferred from the claim text.