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US 12,502,904 B2Granted
Method of forming a varnish-coated image
AssigneeCanon Production Printing Holding B.V.
InventorsLuc Van Keulen, Jeroen A. Schell, Daniël H. Turkenburg, Guido G. Willems, Nicolaas T.A. Van Rens
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Abstract
A printing method includes forming an image by applying marking material onto the surface of a substrate; optionally applying an intermediate layer onto the substrate; subjecting the image to a fixation treatment; applying a layer of an ionically stabilized varnish on the surface of the image; and performing image-wise gloss control by locally varying at least one of a fixation parameter and a primer application parameter.
Claims9
A printing method comprising the steps of:
- forming an image by applying marking material onto a surface of a substrate;
- subjecting the formed image to a fixation treatment;
- applying a layer of an ionically stabilized varnish on the surface of the formed image;
- and
- performing image-wise gloss control by locally varying at least one of:
- primer application parameters by using an ink jet print head configured to apply layers of a liquid primer image-wise on the substrate via a first primer application unit constituted by an ink jet print head such that an amount of primer coverage is different for different image areas;
- and
- fixation parameters, wherein the fixation treatment comprises exposing the surface of the formed image to an atmosphere containing hot water vapor, and wherein varying fixation parameters includes locally varying the percentage of hot water vapor in the atmosphere via a fixation unit comprising an array of controllable nozzles,
- wherein said image-wise gloss control is performed to achieve desired gloss levels for different areas of the formed image by utilizing stored information correlating gloss levels with primer application parameters and with fixation parameters.
6 more elements
Dependencies are inferred from the claim text.