Laser application of bar codes and cancellation of stamps

Details Laser application of bar codes and cancellation of stamps Laser application of bar codes and cancellation of stamps

B - Operations, Transporting

07

C

B07C 3/18 (2006.01)

Patent

CA 2279666

Bar codes are applied to mail pieces using a controlled laser beam which burns into the surface of the mail piece envelope. A controller laser beam can also be used to cancel postage stamps. In this case the beam removes the colour material forming the picture image on the stamp revealing the underlying stamp. This cancellation method destroys the image and prevents the stamp from being reused.

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