LABEL FOR RECEIVING INDICIA HAVING VARIABLE SPECTRAL EMISSIVITY VALUES

• US 20080282593A1
• Filed: 08/04/2008
• Published: 11/20/2008
• Est. Priority Date: 04/14/2004
• Status: Active Grant

• Current Assignee: William Berson
• Original Assignee: William Berson
• Inventors: Berson, William
• Granted Patent: US 8,408,602 B2
• Time in Patent Office: Days
• US Class Current: 40/675
• CPC Class Codes: B42D 25/324 Reliefs
• CPC Class Codes: G09F 3/0297 including a machine-readable marking, e.g. a bar code digitally marked record carriers in general G06K19/00

Abstract

Labels that are conducive to the detection of bar-codes and other indicia having varying spectral emissivity values are provided. The labels include a substrate, a background layer, a thermally conductive layer and an adhesive layer. The background layer is preferably similar in visual appearance to the indicium that the label is to receive. Meanwhile, the thermally conductive layer is made from a material with high thermal conductivity that is used to substantially equalize the temperature across the label surface, thereby enabling a faster and cheaper detection of transitions of differential emissivity on the indicium surface. The adhesive layer is used for attaching the label to a document or other product.

Claims

1-25. -25. (canceled)

26. A label adapted to receive an indicium having varying spectral emissivity values, said label comprising:

a substrate having a first side and a second side; and

a background layer located on said first side of said substrate, wherein the temperature across the surface of said indicium is substantially equal.

27. The label of claim 26 wherein said substrate is made from a material with high thermal conductivity.

28. The label of claim 26 wherein said background layer is made from a material with high thermal conductivity.

29-34. -34. (canceled)

35. A label comprising:

a substrate;

an indicium located on said substrate;

said indicium comprising at least two different emissivity values that are configured to encode said indicium with information;

a thermally conductive layer located on said substrate, wherein said thermally conductive layer ensures that a detected difference in surface temperature corresponds with a difference in said emissivity values; and

a background layer located on said substrate, wherein said label is machine readable.