Encryption device and method, and image forming apparatus

Details Encryption device and method, and image forming apparatus Encryption device and method, and image forming apparatus

2011-04-26

2011-04-26

Zee, Edward (Department: 2435)

Cryptography

Having production of printed copy

Reexamination Certificate

active

07933406

ABSTRACT:
An encryption device which is capable of preparing an encrypted document not easily deciphered by a third person. The encryption device encrypts information formed on a recording member on the basis of a predetermined encryption code. A surface of the recording member is irradiated with light. An image of the irradiated surface of the recording member irradiated with the light is taken. The encryption code is prepared on the basis of the taken image of the irradiated surface.

REFERENCES:
patent: 6999588 (2006-02-01), Oishi
patent: 2003/0123696 (2003-07-01), Matsumoto et al.
patent: 11-041383 (1999-02-01), None

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