| 摘要 |
PURPOSE: Provided is a spectrum printing process using a screen printing, by which a plurality of concentric circles is contained in printed letters and designs, thereby the printed letters and designs are seen three-dimensionally. CONSTITUTION: The spectrum printing process comprises the steps of: printing a design and an image film on a screen and then performing etching along the design containing drawing(1) and non-drawing(2) parts of the concentric circles to produce the original plate of the screen printing; supplying ink to the surface of the original plate; laying the original plate on a reflective sheet; moving a squeezer on the original plate to print the design containing the concentric circles.
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