| 摘要 |
A manufacturing method for key tops comprising the steps of molding a light-shielding film (2) on a to-be-peeled shield (1) by a plane printing, effecting a colored printing (3) a readout part at a predetermined position on it in the state of a plane sheet prior to the 3-D molding, then sucking a printed light-shield film sheet (5) on a metal mold (6) with evacuation system, adsorbing said light-shield film sheet onto the wall face in the metal mold (6), at this time it may use a push mold with suction system so as to be positioned in the female mold, further putting materials such as silicone into this metal mold for one-piece molding and effecting a laser processing on the surface of a key top prepared in a 3-D shape to form a desired pattern (18). Thus the present invention by making the light-shield printing and pattern printing in the state of a plane sheet prior to the 3-D molding and effecting only a pattern processing by laser cut in the state of a stereographic shape, the present invention has omitted a laborious coating, improved the accuracy of printing and at the same time reduced the number of steps in manufacture greatly. Further, since printing is made in the state of a plane sheet, the degree of difficulty greatly differs and the accuracy of printing is raised as compared with a printing made after the 3-D molding. In addition, it becomes possible to previously effect a printing on a groove (9) between individual key faces on which no printing can be carried out after molding. Because a processing by printing, not by coating, can be made, no need for a large space, absence of inferiority due to the adherence of dust and no contamination arising from the scatter of ink in the case of coating are seen and moreover a uniform printing even on sides and gaps is attainable. And the process of manufacture can be greatly shortened. <IMAGE>
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