Tape guide means for recording and/or reproducing apparatus and method of manufacturing the same
OwnerYozaburu Umeharainventor
Life of this patent
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Abstract
A tape guide pin for recording and/or reproducing apparatus includes a base body made of non-magnetic material; and a surface layer formed on the base body, made of non-magnetic hard material, the surface layer having the surface roughness whose microscopic tips are rounded. A method of manufacturing the tape guide pin for recording and/or reproducing apparatus includes the steps of: forming a base body of non-magnetic material; forming a surface layer of non-magnetic hard material on the base body; subjecting the base body and/or the surface layer to surface treatment for dimensional accuracy of circumferential surface; and fine-finishing for rounding the microscopic tips of the surface roughness formed by the surface treatment for dimensional accuracy.
Claims15
Tape guide means for recording and/or reproducing apparatus, comprising a non-magnetic base body and a non-magnetic hard surface layer formed on said base body, said surface layer having rounded microscopic tips whose surface roughness is obtained by surface grinding of the circumferential surface of said surface layer after said surface layer is formed on said base body, thereby the pattern of said microscopic tips extends substantially linearly in the traverse direction to the axial direction of the tape guide means.
A tape-guide pin for a video tape recorder comprising a non-magnetic austenitic base body and a surface layer of chromium coated onto said body and having a Vickers hardness of 400 to 1000 Hv and a surface roughness of 0.2 to 0.6 microns R.sub.max with all surface-roughness peaks rounded.
Dependencies are inferred from the claim text.