Ink composition containing non-VOC liquid carrier
First Claim
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1. A non-aqueous solvent based ink composition having a viscosity which is below about 70.0 cps and comprising:
- a) a non-VOC liquid carrier, the non-VOC liquid carrier being an ester alcohol and being present in an amount ranging from about 25 wt % to about 99 wt % of the total weight of the composition;
b) dispersing agents;
c) pigment particles exhibiting color in visible light and having an average size of less than about 10 μ
m; and
d) a charge adjuvant.
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Abstract
Ink composition including non-VOC liquid carrier and method of making the same are disclosed. A disclosed example ink composition has a viscosity that is below about 70.0 cps and includes non-VOC liquid carrier, dispersing agents and pigment particles having an average size of less than about 10 μm. Also disclosed are method of use and method of making such ink composition containing non-VOC liquid carrier.
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Citations
14 Claims
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1. A non-aqueous solvent based ink composition having a viscosity which is below about 70.0 cps and comprising:
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a) a non-VOC liquid carrier, the non-VOC liquid carrier being an ester alcohol and being present in an amount ranging from about 25 wt % to about 99 wt % of the total weight of the composition; b) dispersing agents; c) pigment particles exhibiting color in visible light and having an average size of less than about 10 μ
m; andd) a charge adjuvant. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method of producing an ink composition having a viscosity which is below about 70.0 cps, the method comprising:
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dissolving, at least, a dispersing agent in an ester alcohol non-VOC liquid carrier to form a mixture, the ester alcohol being present in an amount ranging from about 25 wt % to about 99 wt % of the total weight of the final ink composition; incorporating pigment particles into the mixture, the pigment particles exhibiting color in visible light; and microfluidizing, milling, or homogenizing the mixture until the pigment particles have an average size of less than about 10 μ
m;wherein the mixture is allowed to incubate before performing microfluidizing, milling, or homogenizing.
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14. A method of producing an ink composition having a viscosity which is below about 70.0 cps, the method comprising:
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dissolving, at least, a dispersing agent in an ester alcohol non-VOC liquid carrier to form a mixture, the ester alcohol being present in an amount ranging from about 25 wt % to about 99 wt % of the total weight of the final ink composition; incorporating pigment particles into the mixture, the pigment particles exhibiting color in visible light; microfluidizinq, milling, or homogenizing the mixture until the pigment particles have an average size of less than about 10 μ
m; andsubjecting the mixture to an ultrasonic water bath before the pigment particles are added and after the pigment particles are added.
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Specification