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US 6,475,322 B1Granted
Sheet lamination with transverse sheet bias to eliminate trailing edge coating debris
AssigneeHewlett-Packard Company
InventorStephen M. Ledak
Life of this patent
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Abstract
A method and apparatus for laminating media sheets to remove trailing edge coating debris as the carrier is removed from the laminated sheet involves imparting a transverse force to the laminated sheet to cause the sheet to abruptly straighten as the trailing edge of the sheet passes by a corner of a carrier separation bar at which the carrier is removed. The transverse force may be imparted by guides such as rollers defining a serpentine path through which the laminated sheet must travel.
Claims16
A method of laminating sheets of media comprising the steps of:
- a) feeding a carrier having a lamination coat removably adhered thereon to a bight between opposed lamination rollers;
- b) moving a sheet of media to be laminated to said bight in surface to surface contact with said lamination coat;
- c) continuing to move said sheet and adhering said lamination coat to said sheet by application of pressure to said media and carrier by said opposed rollers;
- d) removing said carrier from a laminated sheet at a point downstream of said rollers;
- and
- e) biasing said moving sheet to move a trailing edge of said sheet at said point transversely to a direction of sheet movement to cause said trailing edge of said sheet to resiliently straighten and move away from said carrier as said trailing edge of said sheet passes said point.
3 more elements
Apparatus for laminating a sheet of media comprising:
- a) a support for sheets of media to be laminated;
- b) a pair of opposed lamination rollers and means for rotating said lamination rollers to move a media sheet and a carrier having a lamination coat thereon in surface to surface contact with said sheet through a bight between said rollers;
- c) a carrier separator for guiding movement of said carrier during removal of said carrier from a laminated sheet, said separator having a corner for holding said carrier in engagement with a laminated sheet;
- d) a puller for tensioning a carrier around said corner to remove a carrier from a laminated sheet;
- and
- e) a sheet guide to cause a trailing edge of a laminated sheet moving in a direction away from said carrier separator to resiliently deflect at said carrier separator away from said direction and separate from removed carrier.
3 more elements
Dependencies are inferred from the claim text.