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.
Claims20
A system comprising:
- a first magnetic assembly on a first side of a path;
- a second magnetic assembly on a second side of the path;
- and
- a source to cure a sub-region of a substrate while the substrate is moving along the path and while the sub-region is between the first magnetic assembly and the second magnetic assembly,
- wherein, when curing the sub-region of the substrate, the source is to:
- move a beam between the first magnetic assembly and the second magnetic assembly.
A system comprising:
- a cylinder that includes one or more magnets;
- and
- a source to cure a sub-region of a substrate while at least a portion of the substrate is wrapped around the cylinder,
- wherein the source is configured to be turned on and off during a single sweep of a beam across the substrate.
Dependencies are inferred from the claim text.