Solid ink compositions comprising crystalline-amorphous mixtures
First Claim
Patent Images
1. A phase change ink comprising:
- at least a crystalline component having a viscosity of less than 10 cps at 140°
C. and a viscosity of greater than 1×
106 cps at room temperature; and
at least an amorphous component that is different from the crystalline component and having a viscosity of less than 100 cps at 140°
C. and a viscosity of greater than 1×
106 cps at room temperature, wherein the phase change ink has a viscosity of less than 12 cps at 140°
C. and a viscosity of at least 1×
106 cps at room temperature.
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Abstract
A solid ink composition comprising an amorphous component, a crystalline material, and optionally, a colorant, which are suitable for ink jet printing, including printing on coated paper substrates. In embodiments, the solid ink formulation comprises a blend of amorphous and crystalline components which provides a solid ink with excellent rheological properties and robustness when forming images or printing on coated paper substrates.
34 Citations
20 Claims
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1. A phase change ink comprising:
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at least a crystalline component having a viscosity of less than 10 cps at 140°
C. and a viscosity of greater than 1×
106 cps at room temperature; andat least an amorphous component that is different from the crystalline component and having a viscosity of less than 100 cps at 140°
C. and a viscosity of greater than 1×
106 cps at room temperature, wherein the phase change ink has a viscosity of less than 12 cps at 140°
C. and a viscosity of at least 1×
106 cps at room temperature. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A phase change ink comprising:
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at least a crystalline component; and at least an amorphous component, wherein the phase change ink has a viscosity of less than 12 cps at a temperature of 140°
C. and a viscosity of at least 106 cps at room temperature.
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18. A method of printing, comprising:
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incorporating a phase change ink into an ink jet printing apparatus, wherein the phase change ink comprises, at least a crystalline component having a viscosity of less than 10 cps at 140°
C. and a viscosity of greater than 1×
106 cps at room temperature; andat least an amorphous component that is different from the crystalline component and having a viscosity of less than 100 cps at 140°
. and a viscosity of greater than 1×
106 cps at room temperature, wherein the phase change ink has a viscosity less than 12cps at a temperature of 140°
C. and a viscosity of at least 1×
106 cps at room temperature;melting the phase change ink inside the ink jet printing apparatus; and causing droplets of the melted ink to be ejected onto a substrate to form an image. - View Dependent Claims (19, 20)
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Specification