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US 4,732,613 AGranted
Recording liquid
AssigneeCanon Kabushiki Kaisha
InventorsMakoto Shioya, Tsuyoshi Eida, Masatsune Kobayashi
Life of this patent
Estimating the term…
Abstract
A liquid composition is provided which contains a water-soluble dye and a solvent, and the liquid composition has a total concentration of divalent and higher valent metals at 20 ppm or less, and a magnesium concentration is preferably 4 ppm or less. An ink-jet recording method employing the ink comprising the above-mentioned liquid composition is also provided.
Claims24
A liquid composition, comprising:
- from about 0.1-20% by weight of water-soluble dye and from about 80-99.9% by weight of a solvent, wherein said liquid composition has a total concentration of divalent and higher valent metals selected from the group consisting of calcium, magnesium, manganese, iron, aluminum, silicon and compounds thereof of 20 ppm or less.
A liquid composition, comprising:
- from about 0.1-20% by weight of a water-soluble dye and from about 80-99.9% by weight of a solvent, wherein said liquid composition has a magnesium concentration of 4 ppm or less.
An ink-jet recording method, comprising:
- forming droplets of ink to perform recording, wherein the ink comprises a liquid composition containing from about 0.1-20% by weight of a water-soluble dye and from about 80-99.9% by weight of a solvent, wherein said liquid composition has a total concentration of divalent and higher valent metals selected from the group consisting of calcium, magnesium, manganese, iron, aluminum, silicon and compounds thereof of 20 ppm or less.
An ink-jet recording method, comprising:
- forming droplets of ink to perform recording, wherein the ink comprises a liquid composition containing from about 0.1-20% by weight of a water-soluble dye and from about 80-99.9% by weight of a solvent, wherein said liquid composition has a total concentration of magnesium of 4 ppm or less.
Dependencies are inferred from the claim text.