Verfahren zum Herstellen einer vorspannenden Federplatte für einen Drahtpunktdruckkopf.

摘要

In a method of fabricating a biasing plate spring (3) for a wire dot print head having an annular part and a plurality of projections (4) extending radially inward from the inner periphery of the annular part (21a), a biasing plate spring intermediate product (21) having two of the projections substantially opposite to each other being connected by an arm (24), is first formed. The intermediate product is then barrel-polished, and then the arm (24) is removed by cutting. Because of the arm, entry of one intermediate product into the gap (22) between adjacent projections of another intermediate product is prevented, and damages to the intermediate product is thereby avoided.