Method of fabricating a biasing plate spring for a wire-dot print head
AssigneeOki Electric Industry Co., Ltd.
InventorsTetsuhiro Yamada, Masahiro Tatsukami
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Abstract
In a method of fabricating a biasing plate spring for a wire dot print head having an annular part and a plurality of projections extending radially inward from the inner periphery of the annular part, a biasing plate spring intermediate product having two of the projections substantially opposite to each other and connected by an arm, is first formed. The intermediate product is then barrel-polished, and then the arm is removed by cutting. Because of the arm, entry of one intermediate product into the gap between adjacent projections of another intermediate product is prevented, and damage to the intermediate product is thereby avoided.
Claims7
A method of fabricating a biasing plate spring for a wire-dot print head having an annular part and a plurality of projections extending radially inward from the inner periphery of the annular part, said method comprising the steps of:
- (a) forming a biasing plate spring intermediate product having an annular part and a plurality of projections extending radially inward from the inner periphery of the annular part with two of the projections being connected by an arm;
- (b) barrel-polishing said biasing intermediate product;
- and
- (c) removing said arm by cutting.
Dependencies are inferred from the claim text.