Patent ID: 7898697

Claim:
A printing device, comprising: an electronic document acquisition unit that acquires an electronic document to be printed on a medium; a code information generation unit that generates code information, wherein the code information is formed by combining identification information that uniquely specifies the instant medium and address information that is generated over the medium and identifies a set of positional codes each indicating a position on a surface of the medium, wherein the address information used for the electronic document is reset to assign for another electronic document; a storage unit that stores the address information of each electronic document; a code image generation unit that converts the code information into a print image to generate a code image; a document image generation unit that generates the document image from the electronic document; and a printing unit that prints the generated code image and the document image on a surface of the medium, wherein the identification information is combined information of both printing device identification information for identifying the printing device and a count number of papers counted by a counter of the printing device.