METHOD FOR MANUFACTURING WIRELESS SUSPENSION BLANK

摘要

PROBLEM TO BE SOLVED: To provide a method for manufacturing a wireless suspension blank which can be worked with high accuracy at a low cost. SOLUTION: In the method for manufacturing the wire suspension blank by using a laminate of three-layered composition laminated with a conductive layer 3 through an electrically insulating layer 2 on a metallic layer 1 for developing a spring characteristic, the laminate of which the insulating layer 2 is formed of a core insulating layer and adhesive layers laminated on both surfaces thereof and in which the ratio of the respective layers of the insulating layers 2 having a high etching rate and a low etching rate ranges from 6:1 to 1:1 is used. The method described above includes a process step of working the metallic layer 1 and the conductive layer 3 respectively by a photoetching method and a process step of working the insulating layer 2 by forming resist images in order to work the insulating layers and wet etching according to the resist images. The process step of working the metallic layer and the conductive layer by the photoetching method is included and the insulating layer 2 is worked by the wet etching.