Method of inspecting a negative film in a photographic processin

Details Method of inspecting a negative film in a photographic processin Method of inspecting a negative film in a photographic processin

1995-03-28

1996-11-12

Rutledge, D.

Photography

Fluid-treating apparatus

Photographic medium or cartridge sensing

2505594, 25055944, 226 10, 355 75, 396620, G03D 308, G03D 1300

Patent

active

055745296

ABSTRACT:
A method of inspecting a negative film in a photographic processing apparatus includes the steps of using a detector to detect location data (i.e., preforations) arranged at equal intervals on the negative film, electrically comparing the detected location data with equally distanced reference location data having a regularity and assigned to a standard negative film, and automatically stopping the advancing movement of the negative film upon finding a fault in the regularity of the detected location data.

REFERENCES:
patent: 3501760 (1970-03-01), Menary
patent: 3693430 (1972-09-01), Menary
patent: 3856414 (1974-12-01), Menary
patent: 4320960 (1982-03-01), Ward et al.
patent: 4933713 (1990-06-01), Tsuji et al.

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