Optical detector system for detecting a splice in an endless tap

Details Optical detector system for detecting a splice in an endless tap Optical detector system for detecting a splice in an endless tap

1986-08-12

1988-05-03

Cardillo, Raymond F.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Tape record

360 13, 360 746, 250227, 242 5519A, 242 57, 226 45, G11B 1508

Patent

active

047424060

ABSTRACT:
An endless tape recording and playback apparatus is provided with a splicing tape detection system which is capable of reliably detecting the presence of splicing tape secured to the endless recording tape. The system includes a capstan which is rotatable at a predetermined angular velocity, and a pinch roller which is capable of pivoting between capstan-engaged and capstan-disengaged positions. An optical detection system including a light emitter and a light detector implemented within a single body, and a support base mounted upon the pinch roller for directing the optical axis of the detection system toward the endless tape surface at an acute angle with respect to the tape surface, can detect the presence of the splicing tape. Due to the angular disposition of the detection system, the presence of the splicing tape can even be detected in conjunction with worn endless recording tape. The light emitter and light detector are mounted upon the pinch roller.

REFERENCES:
patent: 3458667 (1969-07-01), Burquez
patent: 3519833 (1970-07-01), Arch et al.
patent: 3614453 (1971-10-01), Johnson
patent: 3615155 (1971-10-01), Gelbman
patent: 3925817 (1975-12-01), Althuber et al.
patent: 4219167 (1980-08-01), Jenkins
patent: 4221316 (1980-09-01), Jenkins et al.
patent: 4380032 (1983-04-01), Pfost
patent: 4583669 (1986-04-01), Sirkis

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