Print sheet original authentication system, printer device...

Details Print sheet original authentication system, printer device... Print sheet original authentication system, printer device...

2007-04-10

2007-04-10

Poon, King Y. (Department: 2625)

Facsimile and static presentation processing

Static presentation processing

Data corruption, power interruption, or print prevention

C358S001140, C705S007380

Reexamination Certificate

active

10150069

ABSTRACT:
An original authentication system and structural elements thereof is provided, in which it is possible to easily distinguish between an original and a copy. The checking device13comprises: a print sheet reading sensor201for reading the print pattern of the print sheet; a mark information checking portion202for detecting the mark information from the print pattern of the read print sheet, for checking the mark and for calculating the remaining mark amount; a generation control information detection portion203for detecting the generation control information of the print pattern of the read print sheet, and extracting the remaining mark amount from said generation control information; and a remaining mark amount comparison portion204for comparing the calculated remaining mark amount obtained by mark detection with the remaining mark amount extracted from the generation control information. A distinction can between deterioration in quality occurring when an original is printed out, and that occurring when subsequent copies are made, and thus it is possible to carry out authentication of a printed sheet as an original.

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