Advancing material of indeterminate length – Passive guide
Patent
1993-12-16
1996-11-05
Darling, John P.
Advancing material of indeterminate length
Passive guide
226 97, 242615, B65H 2324
Patent
active
055708315
ABSTRACT:
A tape guide device having apertures formed in two tape-winding surfaces of non-rotatable curvature portions. A tape restriction is provided at a connecting portion of the tape guide device interconnecting the curvature portions. A flange is provided on one of the curvature portions for movement along an axis thereof to adjust the height thereof. The flange has an outer diameter greater than that of the one curvature portion. The curvature portions are integrated with each other. According this, an air film is generated between the tape and the tape-winding surfaces by discharging air from the apertures, thereby reducing the friction coefficient between the tape and the tape-winding surfaces to suppress the increase of tape tension. The tape is restricted to fluctuate in the direction of width. Further, the attitude and relative positioning between the curvature portions can be secured with high precision. As a result, the tape load during the tape running is reduced, thereby stabilizing the tape running and prolonging the lifetime of the tape.
REFERENCES:
patent: 3231668 (1966-01-01), Nishiwaki et al.
patent: 3991956 (1976-11-01), Machida
patent: 4336900 (1982-06-01), Pontoni
patent: 4337885 (1982-07-01), Stahler
patent: 4892243 (1990-01-01), Long et al.
patent: 5003424 (1991-03-01), Grant
Kaku Nobuyuki
Koyama Toshihiro
Masuda Kenmei
Sakai Kazuo
Shoji Tomoki
Darling John P.
Hitachi , Ltd.
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