Seiko Epson Corporation

Seiko Epson Corportion

Keiichi Noto

Masahiro Yatake

Jun Ito

Hidehiko Komatsu

Kazuhiko Hara

Hiroko Hayashi

Hitoshi Ohta

Jun Hoshii

Nagatoshi Kasahara

An aqueous ink ensuring less blurring and high color formation on plain paper, satisfactory color formation and fixing property on special paper and excellent ejection stability is realized by using a microcapsule of a colorant encapsulated with a polymer and rendered dispersible in water and specifying the amount of the aromatic ring in the polymer to be from 20 to 70 wt % of the polymer.

Water-based ink, water-based ink set, and process for producing dispersion

When creating recording level specifying data referred to during recording of ink drops of N types (N is an integer of 2 or greater) of different ink levels onto a printing medium by a printing device, standard color value data indicating an association relationship between ink tone values and color values under a standard printing condition is acquired; under a predetermined printing condition, and using at least one type of the aforementioned N types of ink drops for each ink color, patches are printed at a plurality of recording levels, and the color values of the printed patches are acquired; the aforementioned plurality of recording levels are associated with color values; and on the basis of association of the aforementioned plurality of recording levels and color values and of the aforementioned standard color value data, there is created recording level specifying data that specifies, for each ink color, an association relationship recording levels of the aforementioned N types of ink drops and tone values under the aforementioned predetermined printing condition.

Color matching accuracy under multiple printing conditions

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Nagano, Japan

Keiichi Noto