by wpengine | Aug 11, 2021Involves the feeding of a continuous roll (or web) of paper through the printing press. Web-fed offset lithography (as opposed to sheet-fed offset) is the predominant print process for tax stamps and other security labels.
by wpengine | Aug 11, 2021The application of a coating of wet glue to a dry substrate before it is attached to an item. This is the main way of applying tax stamps to products.
by wpengine | Aug 11, 2021An image in paper produced by varying the thickness and density of the paper mass during paper production. These variations form a discernible image that can be viewed when holding the paper item up to the light.
by wpengine | Aug 11, 2021A property of electromagnetic radiation that denotes the distance between waves of light.
by wpengine | Aug 11, 2021A mathematical means for performing a signal analysis when signal frequency varies over time.