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US 8,940,088 B2Granted
Aqueous ink composition and recorded article formed by using the same
AssigneeSeiko Epson Corporation
InventorsShiki Hirata, Takayoshi Kagata, Tsuyoshi Sano
Life of this patent
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Abstract
In an advantage of embodiments of the invention, there is provided an aqueous ink composition at least containing water, silver particles, and a humectant, and the humectant is at least one member selected from glycerols, glycols, and saccharide.
Claims4
An aqueous ink composition for recording image comprising:
- components at least including water, a silver particle, and a humectant;
- wherein:
- the humectant is at least one component selected from trimethylolpropane, hexylene glycol, and saccharide;
- an average primary particle size of the silver particle is in the range from 10 nm to 100 nm;
- a particle size d90 of the silver particle in a grain size accumulation curve is in the range from 50 nm to 1 μm;
- the humectant is contained in an amount that is in the range from 5 weight % to 20 weight %;
- a particle size d10 of the silver particle in a grain size accumulation curve is in the range from 2 nm to 20 nm;
- and
- the aqueous ink composition has a gloss at an angle of 20° having a maximum that is 700 or larger.
6 more elements
Dependencies are inferred from the claim text.