Magnetic tape device having a tape guide which prevents excessiv

Details Magnetic tape device having a tape guide which prevents excessiv Magnetic tape device having a tape guide which prevents excessiv

1998-02-20

1999-09-28

Mansen, Michael R.

Advancing material of indeterminate length

By orbitally traveling material-engaging surface

Plural spaced apart rolls

226194, 2423462, 2426152, 2426153, 2426154, B65H 2000, B65H 5714, G03B 2302

Patent

active

059573619

ABSTRACT:
A magnetic tape device including a tape guide to guide a magnetic tape as the magnetic tape travels past a magnetic head to provide good contact between the magnetic tape and the magnetic head. The tape guide includes a roller guides, or roller guides and guide posts. The roller guide includes upper and lower flange units in sliding contact with the edges of the magnetic tape, and a roller unit between the upper and lower flange unit having the magnetic tape wrapped on an outer circumferential surface. The upper and lower flange units include concave portions disposed in an upper surface of the lower flange unit, and in a lower surface of the upper flange unit, to avoid sliding contact with the edge of the magnetic tape. The concave portions are positioned in the upper and lower flange units such that the upper and lower edges of the magnetic tape contact the upper and lower flange units only at a portion corresponding to the portion of the magnetic tape contacting the outer circumferential surface of the roller unit. The guide post also includes upper and lower flange units having concave portions to avoid sliding contact. Furthermore, the lower flange unit of the roller guide and the lower flange unit of the guide post may be the same member.

REFERENCES:
patent: 3276651 (1966-10-01), Bryer
patent: 3735940 (1973-05-01), Schwartz
patent: 3991956 (1976-11-01), Machida
patent: 4267951 (1981-05-01), Grant et al.
patent: 4403720 (1983-09-01), Grant
patent: 4573619 (1986-03-01), Grant
patent: 4697759 (1987-10-01), Henderson et al.
patent: 5546259 (1996-08-01), Iwata et al.
Patent Abstracts of Japan, No. 06060496, published Mar. 4, 1994.

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