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Quality control method and apparatus for photographic pictures

  • US 4,344,683 A
  • Filed: 09/18/1980
  • Issued: 08/17/1982
  • Est. Priority Date: 09/29/1979
  • Status: Expired due to Term
First Claim
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1. A quality control method for photographic pictures, comprising the steps of imaging a test pattern onto a marginal area of a film frame, the test pattern being a raster pattern having zones of different raster frequency and including a component indicative of image sharpness;

  • upon conversion of the film frame into a negative, printing the test pattern in a marginal area of a positive made from the negative so that, in the event the photographic image on the positive is blurred, the absence or presence of blurring of the printed test pattern indicates whether blurring of the photographic image occurred during picture-taking or during printing of the positive; and

    wherein the step of imaging is carried out during manufacture of the photographic film.

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