Fluorescent pigments

COLORS AVAILABLE
UVF BLUE
UVF GREEN
UVF YELLOW

SECURITY FEATURE
The use of Fluorescent Tags are well established in the credit card and security printing field. Major credit
cards such as: American Express, Master Card and Visa have their logo or name imprinted with a blue
ultraviolet marker. The enclosed paper describes various ultraviolet active compounds that fluoresce in
various colors.

INVISIBLE BAR CODES
Bar coding as a method of carrying identification information is a well established technology. It is used for
product identification, inventory control and in credit cards.
Due to the desire of industry to maximize its usage of graphics on a product it is desirable to minimize the
area devoted to a bar code. An alternative approach is to print an invisible bar code over the graphics. This
would potentially allow many lines of code or two-dimensional codes to be printed with much greater
information carrying ability. In principal one could even put two invisible colors one over the other in bar
code.

STATISTICAL PROCESS CONTROL
As a result of interest in correlating finished product performance with various components of a process, it is
desirable to mark lot-marks or a bar code on finished goods. An invisible bar code serves this purpose. An
example would be: to mark every few yards on goods produced on a web using an ink jet or other marker.

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