Importance

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Abstract

An input unit receives first image data corresponding to a watermark image by a first glossy ink. An image data transmitter composes the first image data and data representing a basic transfer pattern as a background of the watermark image to create and send second image data representing a watermark composite image. The basic transfer pattern is configured to transfer the first ink so that first pixels to which the first ink is transferred and second pixels to which the first ink is not transferred are dispersedly mixed. A printing unit prints a third image based on third image data printed using a second ink on a print body and prints the watermark composite image based on the second image data using the first ink on the print body to form a watermarked image including the third image and the watermark composite image superimposed on the print body.

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First Claim