Polymer blend liquid toner compositions
AssigneeIndigo N.V.
InventorsBenzion Landa, Peretz Ben-Avraham, Becky Bossidan
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AssigneeIndigo N.V.
InventorsBenzion Landa, Peretz Ben-Avraham, Becky Bossidan
Estimating the term…
In a liquid toner for use in imaging processes which comprises pigmented polymer particles, at least one charge director and a hydrocarbon liquid toner carrier, the polymer is a blend of at least two distinct polymer components, the blend being characterized in that in a 40% non-volatile mixture with a hydrocarbon liquid toner carrier, it has on a semi-logarithmic viscosity vs. temperature cooling curve, a break-point at a temperature below about 65.degree. C. at a viscosity of between about 3.times.10.sup.5 centipoises and about 5.times.10.sup.6 centipoises. The polymer blend and an electrostatic imaging process (particularly one using an intermediate transfer member) utilizing the above toner are also claimed. Use of such polymer blends enables liquid toner to be applied in such processes at no more than and in some cases less than the customary processing temperatures.
A liquid toner for use in imaging processes at a given intermediate transfer member temperature from the intermediate transfer member to a substrate, said liquid toner comprising pigmented polymer particles, at least one charge director and a hydrocarbon carrier liquid, wherein the polymer comprised in said particles is a blend of at least two distinct polymer components, the blend being characterized in that in a 40% non-volatile mixture with the carrier liquid, the blend has, on a semi-logarithmic viscosity vs. temperature cooling curve, a transition at a temperature below about 65.degree. C. at a viscosity of between about 3.times.10.sup.5 centipoises and about 5.times.10.sup.6 centipoises, wherein at temperatures below the transition temperature, the rate of change of viscosity with temperature is higher than the rate of change at temperatures above the transition temperature.
A liquid toner for use in imaging processes at a given intermediate transfer member temperature from the intermediate transfer member to a substrate, said liquid toner comprising pigmented polymer particles, at least one charge director and a hydrocarbon carrier liquid, wherein the polymer comprised in said particles is a blend of at least two distinct polymer components, the blend being characterized in that in a 40% non-volatile mixture with the carrier liquid, the blend has, on a semi-logarithmic viscosity vs. temperature cooling curve, a transition at a temperature below about 65.degree. C. at a viscosity of between about 3.times.10.sup.5 centipoises and about 5.times.10.sup.6 centipoises, wherein at temperatures below the transition temperature, the rate of change of viscosity with temperature is higher than the rate of change at temperatures above the transition temperature;
Dependencies are inferred from the claim text.