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US 11,007,769 B2Granted
Printer ink dryer units
AssigneeHP Scitex Ltd.
InventorAlex Veis
Life of this patent
Estimating the term…
Abstract
In an example, a printer ink dryer unit comprises at least one ultraviolet light source to dry a printer ink layer by causing evaporation of a solvent fluid therefrom.
Claims20
A method comprising
- irradiating a substrate bearing a solvent-based printing substance comprising a colorant with radiation to cause evaporation of solvent fluid therefrom, comprising irradiating the printing substance with a non-laser Light Emitting Diode (LED),
- wherein a waveband of the radiation is such that heating of the solvent fluid is substantially due to heat transfer from the colorant.
A method comprising:
- irradiating a printed substrate comprising undried inks of different colors, the undried inks comprising Cyan, Yellow, Magenta and Black pigments in solvents that are subject to evaporation, the irradiating performed with at least one non-laser, ultraviolet light emitting diode (LED) as a light source to dry the inks;
- wherein the inks with Cyan, Yellow, Magenta and Black pigments are all dried simultaneously by the irradiation.
A method comprising:
- irradiating a printed substrate comprising undried inks of different colors, the undried inks comprising Cyan, Yellow, Magenta and Black pigments in solvents that are subject to evaporation, the irradiating performed with at least one non-laser, ultraviolet light emitting diode (LED) as a light source to dry the inks;
- and
- absorbing ultraviolet light from the LED with the Cyan, Yellow, Magenta and Black pigments with a difference in absorption efficiency of less than 30%.
Dependencies are inferred from the claim text.