Metal detection apparatus for detecting metal objects in a web o

Details Metal detection apparatus for detecting metal objects in a web o Metal detection apparatus for detecting metal objects in a web o

1995-12-01

1997-07-08

Young, W. R.

Dynamic magnetic information storage or retrieval

Recording on or reproducing from an element of diverse utility

Motion picture film

242563, 340675, 396652, G08B 2100

Patent

active

056467940

ABSTRACT:
A photofinishing apparatus for reading and/or writing magnetic information on a web of photographic film. The web comprises a plurality of individual strips of film secured together end to end. The apparatus includes a film track for receiving the web, a pair of drive rollers for moving the film web through the film track, a magnetic reader and/or writer for reading and/or writing magnetic data on the web, and a detection device for detecting metal objects in the web. The detection device is located at a point in the film track prior to the magnetic reader and/or writer. A monitoring device monitors the change in voltage across two space points on the film track for determining when a metal object is in the web and for producing a signal which is used to stop the film web.

REFERENCES:
patent: T958003 (1977-05-01), Russel et al.
patent: 3248979 (1966-05-01), Stevens, Jr.
patent: 3564170 (1971-02-01), Rehm et al.
patent: 3646372 (1972-02-01), Snellman et al.
patent: 4276547 (1981-06-01), Bowen et al.
patent: 4523750 (1985-06-01), Hubler
patent: 5087027 (1992-02-01), Acquaviva
patent: 5555141 (1996-09-01), Min
Japanese 1213761A; Publication No. 01-213671; Published Aug. 28, 1989; Yushimo Hisahide; Ricoh Co. Ltd.; Abstract.

Affiliated with

Also associated with

Rating

Metal detection apparatus for detecting metal objects in a web o does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Metal detection apparatus for detecting metal objects in a web o, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Metal detection apparatus for detecting metal objects in a web o will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2412070