Patent ID: 7237319

Claim:
A method of manufacturing a plane coil, comprising the steps of: stamping a sheet member which is being unwound and conveyed from a winding body, and in which a conductive film is stuck on a support sheet, in a required shape of coil; sticking a protective sheet which is made sticky, onto a surface of the stamped structure where the conductive film is stuck; peeling off the support sheet; sticking a surface of the structure with the protective sheet stuck thereon, the surface of the structure being a side where the stamped conductive film is stuck, onto an insulative support sheet which is being unwound and conveyed from a winding body; and peeling off the protective sheet, wherein the step of stamping a sheet member in a required shape of coil includes stamping the sheet member in such a shape that a coil portion, a frame portion defined around the coil portion, and a joining portion connecting the coil portion to the frame portion are left unstamped, and wherein the step of peeling off the protective sheet is followed by a step of stamping a portion corresponding to said joining portion, of the structure with said insulative support sheet stuck thereon.