Ink set and recording method
AssigneeSeiko Epson Corporation
InventorsKenichi SEGUCHI, Mitsuaki KOSAKA
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Abstract
An ink set includes a first ink and a second ink which are water-based ink compositions, in which each of the first ink and the second ink includes a pigment and resin including resin particles, the first ink includes a first pigment and the second ink includes a second pigment different from the first pigment, the first ink and the second ink are mixed with a 5% by mass water-based solution of magnesium sulfate heptahydrate to increase a volume average particle diameter of the ink and a difference in the volume average particle diameter for the inks in the inks after mixing is 40% or less, and the ink set is used for recording together with a treatment liquid including an aggregating agent for aggregating the components of the water-based ink compositions.
Claims19
An ink set comprising:
- a first ink and a second ink which are water-based ink compositions,
- wherein the first ink and the second ink contain a pigment and resin particles,
- the first ink contains a first pigment and the second ink contains a second pigment different from the first pigment,
- the first ink and the second ink are mixed with a 5% by mass water-based solution of magnesium sulfate heptahydrate to increase a volume average particle diameter of the inks and a difference in the volume average particle diameter for the inks in the inks after mixing is 40% or less, and
- the ink set is used for recording together with a treatment liquid including an aggregating agent for aggregating the components of the water-based ink compositions.
A recording method performed using a first ink and a second ink which are water-based ink compositions, and a treatment liquid, in which
- the first ink and the second ink contain a pigment and resin particles,
- the first ink contains a first pigment and the second ink contains a second pigment different from the first pigment, and
- the first ink and the second ink are mixed with a treatment liquid to increase a volume average particle diameter of the inks and a difference in the volume average particle diameter for the inks in the inks after mixing is 40% or less, the method comprising:
- attaching the treatment liquid to a recording medium;
- attaching the first ink to the recording medium;
- and
- attaching the second ink to the recording medium.
Dependencies are inferred from the claim text.