US 11,863,723 B2
Document determination system and printing device for determining normality of document image based on code image
Go Hiroike, Matsumoto (JP); Yoichiro Maki, Shiojiri (JP); Shin Miura, Shiojiri (JP); Masayuki Nagase, Shiojiri (JP); Shinji Takio, Shiojiri (JP); and Hiroyuki Kuramoto, Shiojiri (JP)
Assigned to Seiko Epson Corporation, Tokyo (JP)
Filed by SEIKO EPSON CORPORATION, Tokyo (JP)
Filed on Jun. 15, 2022, as Appl. No. 17/807,117.
Claims priority of application No. 2021-101396 (JP), filed on Jun. 18, 2021.
Prior Publication US 2022/0407977 A1, Dec. 22, 2022
Int. Cl. H04N 1/32 (2006.01); H04N 1/00 (2006.01)
CPC H04N 1/32133 (2013.01) [H04N 1/00816 (2013.01); H04N 1/00846 (2013.01); H04N 1/00864 (2013.01); H04N 2201/3269 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A document determination system comprising:
an information processing device that stores identification information in association with document information;
a printing device that prints a document image corresponding to the document information and a code image indicating the identification information on a print medium to generate a normal printed matter; and
a reading device that reads a print image printed on a printed matter, wherein
the printing device prints the code image in a preset end region of the print medium, and
the information processing device determines whether the printed matter is the normal printed matter or a copied printed matter obtained by copying the normal printed matter, based on the code image included in the print image read by the reading device, and
a part of the code image disappears in the copied printed matter.
 
8. A printing device that acquires, from an information processing device, document information and a code image indicating identification information associated with the document information, and prints a document image corresponding to the document information and the code image on a print medium to generate a printed matter, wherein
the printing device prints the code image in a preset end region of the print medium,
the printed matter is a normal printed matter, and
a part of the code image disappears in a copied printed matter obtained by copying the normal printed matter.