It possesses the surface irregularity section of depth average 30 or 100 millimicrons in

摘要

PROBLEM TO BE SOLVED: To develop a molded resin characters printed on the surface of which hardly disappear and by which an indication can be stably maintained even when receiving a physical action during using the resin.;SOLUTION: A molded resin printed on the uneven surface part has 30-100 μm in depth on the uneven surface part and is printed with ink on the uneven part wherein the sum total (nS2) obtained by multiplying an ink area (S1) printed on the uneven surface part by the number (n) of the surface (S2) around the convex part present in the ink area is calculated according to the formula: (S1-nS2)/S1/×100, the population Y(%) of the concave is 10-80%, and the diameter around the convex is 5-20 μm.;COPYRIGHT: (C)2001,JPO