System and method for forming an image on a substrate
AssigneeViavi Solutions Inc.
InventorsVladimir P. Raksha, Curtis R. Hruska, Neil Teitelbaum
Life of this patent
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Abstract
A scanning laser having a wavelength compatible with a coating binder so as to cure it as the laser scans and irradiates the coating on a moving web. A system and method for curing flakes by providing a scanning laser which scans across a moving coated substrate in a magnetic field allows images to be formed as magnetically aligned flakes are cured into a fixed position. The images have regions of cured aligned flakes. The scanning laser cures the magnetically aligned flakes within it region it irradiates. Alternatively an array of lasers can be used wherein individual lasers can be switched on and off to fix irradiated coating as a moving web is moved at a high speed.
Claims19
A system comprising:
- magnetic assemblies to create a first magnetic field,
- wherein the magnetic assemblies include:
- a first magnetic assembly that includes a north pole and a south pole, and
- a second magnetic assembly;
- a source to generate a beam that cures a region of a substrate by moving the beam back-and-forth across the region while the substrate is on a path associated with the magnetic assemblies;
- and
- a magnet that is downstream from the magnetic assemblies and the source and is to create a second magnetic field that is different from the first magnetic field.
A method comprising:
- moving a substrate along a path that is associated with magnetic assemblies that create a first magnetic field and a magnet that creates a second magnetic field that is different from the first magnetic field,
- wherein the magnetic assemblies include:
- a first magnetic assembly that includes a north pole and a south pole, and
- a second magnetic assembly;
- using a source to generate a beam;
- and
- curing a sub-region of the substrate by moving the beam back-and-forth across the sub-region while the substrate is moving along the path,
- wherein the magnet is downstream from the magnetic assemblies and the source.
An apparatus, comprising:
- means for moving a substrate along a path that is associated with magnetic assemblies that create a first magnetic field and a magnet that creates a second magnetic field that is different from the first magnetic field,
- wherein the magnetic assemblies include:
- a first magnetic assembly that includes a north pole and a south pole, and
- a second magnetic assembly;
- means for using a source to generate a beam;
- and
- means for curing a sub-region of the substrate by moving the beam back-and-forth across the sub-region while the substrate is moving along the path,
- wherein the magnet is downstream from the magnetic assemblies and the source.
Dependencies are inferred from the claim text.