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Ventilating system for diazo process printing machines

  • US 4,890,136 A
  • Filed: 05/16/1988
  • Issued: 12/26/1989
  • Est. Priority Date: 05/16/1988
  • Status: Expired due to Fees
First Claim
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1. A ventilation system for a two chamber diazo copy machine of the type having an exposure chamber containing a source of illumination for exposure of an original image onto diazo copying material and a developer chamber utilizing ammonia vapors to develop the image on the diazo copying material, the ventilation system comprising:

  • means for ventilating the exposure chamber including;

    inlet means for admitting ambient air into the exposure chamber; and

    outlet means for venting hot air from the exposure chamber into the ambient environment;

    means for ventilating the developing chamber including;

    means for vacuum exhausting ammonia laden air from the developing chamber;

    an absorber chamber in fluid communication with the developing chamber whereby ammonia laden fumes therefrom may be drawn into the absorber chamber; and

    cartridge means disposed within the absorber chamber for selectively absorbing ammonia fumes.

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