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US 5,513,563 AGranted
Indicia security via variable dot size
AssigneePitney Bowes Inc.
InventorWilliam Berson
Life of this patent
Estimating the term…
Abstract
A system is disclosed that makes it more difficult to print fraudulent indicia. Security is achieved by varying the dot size of pixels in the printed image according to a predetermined arrangement.
Claims5
A postal meter printer for printing alphanumeric characters and indicia on a plurality of mail pieces, said printer comprises:
- means for printing a plurality of dots that represent the alphanumeric characters and indicia;
- means for storing specific information about the postal meter and the plurality of mail pieces;
- means coupled to said storing means for developing one or more codes that contain information about the postal meter and the plurality of mail pieces;
- and
- means coupled to said developing means and said printing means for varying the dot size on specific printed regions of the plurality of mail pieces so that said one or more printed regions of the mail piece containing varying dot sizes will be coded in accordance with the code produced by said developing means without changing the identity of the alphanumeric characters and indicia.
2 more elements
Dependencies are inferred from the claim text.