Method and apparatus for printing copy restrictive documents having individual keycodes
AssigneeEastman Kodak Company
InventorsBadhri Narayan, Nelson A. Blish
Life of this patent
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Abstract
A system for creating copy restrictive media is disclosed. The system comprises printing a first pattern of microdots (80) on a first set of documents and printing a second pattern of microdots (82) on a second set of documents. A first key code is associated with the first microdot pattern (80), which allows a copy machine to copy the first set of documents, and a second key code is associated with the second microdot pattern (82), which allows a copy machine to copy the second set of documents. This system allows individual copyright owner to insure that no one else is able to reproduce their copyrighted documents.
Claims9
A system for creating copy restrictive documents with individual key codes comprising:
- printing a first pattern of microdots on a first set of documents;
- printing a second pattern of microdots on a second set of documents;
- a first key code associated with said first microdot pattern wherein said first key code unlocks a copy machine to allow reproduction of said first set of documents;
- and
- a second key coded associated with said second microdot pattern wherein said second key code unlocks a copy machine to allow reproduction of said second sets of documents.
A method for producing copy restrictive documents comprising the steps of:
- printing a first pattern of microdots on a first set of documents;
- printing a second pattern of microdots on a second set of documents;
- generating a first key code associated with said first microdot pattern wherein said first key code unlocks a copy machine to allow reproduction of said first set of documents;
- and
- generating a second key code associated with said second microdot pattern wherein said second key code unlocks a copy machine to allow reproduction of said second set of documents.
An apparatus for creating copy restrictive media comprising:
- a linear array comprised of at least two spatially distributed light sources;
- an aperture mask for forming two or more micro-light sources from said light sources;
- an optical element for focusing light from said micro-light sources onto first a media and a second media;
- wherein said first media and said second media are each moved sequentially transverse to said linear array;
- an encoder for turning said light sources on and off at regular intervals relating to movement of said media;
- and
- wherein a first pattern of microdots is printed on said first media and a second pattern of microdots is printed on said second media.
Dependencies are inferred from the claim text.