Automatic authentication of printed documents
First Claim
1. A method of printing an electronic document, the method comprising:
- in a printing apparatus, electronically verifying predetermined authentication information in the electronic document; and
if the verifying step confirms the predetermined authentication information, the printing apparatus automatically performs a first print function; and
if the verifying step does not confirm the predetermined authentication information, the printing apparatus automatically performs a second print function.
5 Assignments
0 Petitions
Accused Products
Abstract
A document printer includes an authenticity verifier for examining an electronic document to verify predetermined authentication information in the electronic document. The authentication information may be an electronic signature, or a digital watermark. The authenticity verifier may be included in the printer controller, and examines the authentication information of the document to verify that the document is unchanged from when it was transmitted by the source computer, and for authenticating the source of the document. If the authenticity verifier confirms the authentication information, the printer automatically performs one print function, such as printing the document with an authentication mark. If the authenticity verifier does not confirm the authentication information, the printer automatically performs a different print function, such as not printing the document, or printing the document with an authenticity warning.
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Citations
15 Claims
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1. A method of printing an electronic document, the method comprising:
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in a printing apparatus, electronically verifying predetermined authentication information in the electronic document; and
if the verifying step confirms the predetermined authentication information, the printing apparatus automatically performs a first print function; and
if the verifying step does not confirm the predetermined authentication information, the printing apparatus automatically performs a second print function. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. In a printing apparatus, a method of printing a document, the method comprising:
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storing on the printing apparatus one or more verification algorithms;
receiving at the printing apparatus an electronic document;
applying to at least a portion of the electronic document received at the printing apparatus a first one of the one or more verification algorithms to authenticate the electronic document; and
automatically printing on the printing apparatus the document with a first authentication mark if the step of applying the first verification algorithm authenticates the electronic document. - View Dependent Claims (10, 11, 13, 14, 15)
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12. A document printer for printing electronic documents onto print media, the printer comprising:
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an authenticity verifier for examining an electronic document to confirm predetermined authenticity information in the electronic document;
a print element for applying the image of the electronic document to a print medium.
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Specification