To easily form and produce complicate patterns such as inlaying patterns or the like clearly without bleeding ink and without requiring skills.

According to the manufacturing system, an inlaying pattern layer 2 is formed by ink-jet printing to a printing paper 5, thereby obtaining a pattern paper 6. An uncured resin is impregnated and set to the paper. A decorative sheet 7 is thus manufactured. In this case, the system is provided with a memory part for storing image data for the ink-jet printing, a control part for controlling an ink-jet printing apparatus based on the image data of the memory part, an image data input part, and the ink-jet printing apparatus. Image data for the ink-jet printing is stored beforehand to the memory part via the input part. The ink-jet printing apparatus is controlled by the control part on the basis of the stored image data, whereby the inlaying pattern layer 2 is formed.