Water-based cyan ink for ink-jet printing, color ink set containing the same and image forming method using the ink set
OwnerMasaki Nakamura, Atsushi Tomotake +1inventors
InventorsMasaki Nakamura, Atsushi Tomotake, Hirotaka Iijima
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Abstract
A water-based cyan ink for ink-jet printing, comprising pigment particles or water insoluble colored polymer particles, wherein an ink-jet image is formed by jetting the water-based cyan ink on a porous ink-jet recording sheet with an ink-jet printer without being subjected to an post-treatment, and the ink-jet image has the following set of color coordinate values in a L*a*b* color space when L* is in a range of 65<L*<75: (i) −20<a*<20; and (ii) −20<b*<20.
Claims11
A water-based cyan ink for ink-jet printing, comprising pigment particles or water insoluble colored polymer particles,
- wherein an ink-jet image is formed by jetting the water-based cyan ink on a porous ink-jet recording sheet with an ink-jet printer without being subjected to an post-treatment, and the ink-jet image has the following set of color coordinate values in a L*a*b* color space when L* is in a range of 65<L*<75:
- (i) −20<a*<20;
- and
- (ii) −20<b*<20.
An ink set for ink-jet printing containing a water-based cyan ink which comprises pigment particles or water insoluble colored polymer particles,
- wherein an ink-jet image is formed by jetting the ink set on a porous ink-jet recording sheet with an ink-jet printer without being subjected to an post-treatment, and the ink-jet image has the following set of color coordinate values in a L*a*b* color space when L* is in a range of 50<L*<90:
- (i) −20<a*<20;
- and
- (ii) −20<b*<20.
Dependencies are inferred from the claim text.