| 摘要 |
A print-data generating apparatus utilizes advantages of both a printed matter and electronic data. Information to be contained on a sheet of paper is separated into secret information and public information. The public information is presented such that the content thereof can be made public on a sheet. The secret information is embedded in the sheet as watermark image data, which is reversibly convertible electronic data. Print data based on a portion including the public information and a portion including the secret information is generated on the same sheet and a printed matter is printed. Accordingly, information contained on paper is prevented from leaking, and the convenience of paper is ensured.
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