Ink composition and inkjet recording method
First Claim
Patent Images
1. An ink composition used for inkjet recording, comprising:
- a dispersion medium;
particles containing at least a colorant; and
a charging regulator that generates charges on the particles, wherein an electric conductivity of the particles in the ink composition is saturated.
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Abstract
In electrostatic inkjet recording in which an ink droplet is ejected by acting electrostatic force on ink that contains colorant particles, the electric conductivity of the colorant particles in the ink is saturated. Thus, variations in ink dot diameter caused by the ejection delay and a decrease in frequency responsivity are avoided, so that high-quality image recording with good frequency responsivity can be realized.
20 Citations
18 Claims
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1. An ink composition used for inkjet recording, comprising:
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a dispersion medium;
particles containing at least a colorant; and
a charging regulator that generates charges on the particles, wherein an electric conductivity of the particles in the ink composition is saturated. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An inkjet recording method, comprising
acting electrostatic force on an ink composition which contains at least a dispersion medium, particles containing at least a colorant, and a charging regulator that generates charges on the particles and in which an electric conductivity of the particles is saturated; - and
ejecting an ink droplet of the ink composition. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18)
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Specification