Apparatus for treating webs of photographic material or the like

Details Apparatus for treating webs of photographic material or the like Apparatus for treating webs of photographic material or the like

1973-09-20

1976-04-06

Schran, Donald R.

Cutting

With randomly actuated stopping means

Responsive to tool detector or work-feed-means detector

83208, 83210, 83221, 83364, B26D 524

Patent

active

039481255

ABSTRACT:
Apparatus for subdividing webs of photographic paper into discrete prints has a detector which scans marks applied to the web for the purpose of arresting the drive for the web at the exact moment when the central portion of a frame line between two successive images on the web is in register with the knives. The signals which are furnished by the detector can be used to arrest the drive only within a short interval of time which begins shortly or immediately before a mark reaches the detector. This prevents the detector from arresting the drive in response to detection of a flaw or a particle of foreign matter whose effect upon the detector is similar to that of a mark.

REFERENCES:
patent: 3600997 (1971-08-01), Schmidt
patent: 3699832 (1972-10-01), Smith et al.
patent: 3763728 (1973-10-01), Blackman
patent: 3793915 (1974-02-01), Hujer
patent: 3796117 (1974-03-01), Toshiaki et al.

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