Photo film winding method and apparatus

Details Photo film winding method and apparatus Photo film winding method and apparatus

1996-06-21

1998-04-28

Jillions, John M.

Winding, tensioning, or guiding

Convolute winding of material

With spool loading or coil removal

2425342, B65H 1926

Patent

active

057434824

ABSTRACT:
A photo filmstrip (10) has a length from a front end to a rear end (10a), and the length is different according to a strip type. To wind the photo filmstrip about a spool (36), at first, the front end is retained on the spool. The photo filmstrip is wound about the spool at high speed by rotating the spool fast. After the high-speed winding, the photo filmstrip is wound about the spool at low speed by rotating the spool slowly. During the low-speed winding, the rear end is detected at a photo sensor (47, 84, 99) disposed a first distance away from the spool rotated in the low-speed winding. The spool is stopped from rotating upon detecting the rear end, to regularize a length of an unwound portion of the photo filmstrip irrespective of the length of the photo filmstrip.

REFERENCES:
patent: 3411732 (1968-11-01), Ebneter
patent: 3477657 (1969-11-01), Norbisrath
patent: 4609422 (1986-09-01), Becking
patent: 4846416 (1989-07-01), Natale
patent: 4957247 (1990-09-01), Nakamura et al.
patent: 5125630 (1992-06-01), Hoyt et al.
patent: 5479691 (1996-01-01), Shimizu et al.

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