Photographic film package and method of making the same

CAFC
  • US 4,884,087 A
  • Filed: 08/20/1987
  • Issued: 11/28/1989
  • Est. Priority Date: 08/20/1986
  • Status: Expired due to Term
First Claim
Patent Images

1. A lens-fitted photographic film package having an externally operable member for effecting an exposure, comprising:

  • a light-tight film casing which must be destroyed to open the same, having an opening through which said exposure is made when said externally operable member is operated;

    an unexposed rolled film disposed on one side of said opening in said light-tight casing;

    a removable light-tight film container having a film winding spool therein disposed on the opposite side of said opening in said light-tight casing from said rolled film, one end of said rolled film being attached to said film winding spool;

    means for winding said rolled film into said light-tight film container and around said film winding spool; and

    winding control means responsive to operation of said externally operable member for allowing said film winding spool to rotate so as to enable said rolled film to be advanced by only one frame after every exposure;

    said winding control means including;

    a sprocket wheel driven by movement of said rolled film; and

    a frame counter driven by said sprocket wheel, said frame counter being provided with indications designating a series of frame numbers and means for disabling said winding control means responsive to said frame counter indicating there remains on said unexposed film no film frame capable of being exposed.

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