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Film changer having film-receiving, nondriven cassette with spiral-shaped guide plate

  • US 5,018,182 A
  • Filed: 11/15/1988
  • Issued: 05/21/1991
  • Est. Priority Date: 11/15/1988
  • Status: Expired due to Fees
First Claim
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1. A medical x-ray film processing device for an x-ray apparatus, which comprises:

  • a medical x-ray film exposure device for holding a sheet of film during an x-ray film exposure operation;

    a passive-type cassette, which includes no film driving mechanism, for receiving an exposed film from the film exposure device, the cassette being removably mounted on the film exposure device and comprising an essentially box-shaped housing having an open top and a film-receiving feed-in-slot in a front wall;

    a guide plate in the housing and formed into an inwardly spiraling configuration having an outer open end and an inner end, so that a film fed through the feed-in slot into the open end of the spiraling configuration and along an interior surface of the guide plate assumes a configuration corresponding to that of the guide plate, to facilitate storage of the film in a small space;

    a top cover for the open top of the housing, the top cover having a first end pivotably mounted on the housing adjacent a housing rear wall and having a second end which opens adjacent the housing front wall upon pivoting of the cover, and the guide plate having an entrance end supported on the second end of the cover so that opening of the cover exposes the interior of the guide plate for removal of film therefrom;

    releasable means for retaining the cover in a closed position;

    film feeding means in the film exposure device for feeding an exposed film from the film exposure device into the cassette and along the interior surface of the guide plate after a film exposure operation; and

    anvil bar means for engaging the guide plate and causing reverse-bending of the guide plate when the cover is moved to an open position.

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