Ventilating system for diazo process printing machines
First Claim
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.
4 Assignments
0 Petitions
Accused Products
Abstract
A ventilation system for a diazo copy machine of the type having an exposure chamber containing a source of illumination for exposure of an original image onto diazo copy material and developer chamber utilizing ammonia vapors to develop the image on the diazo copying material. The ventilation apparatus comprises separate means for ventilating the exposure chamber and for ventilating the developing chamber. Inlet means are provided in the exposure chamber for admitting ambient air thereinto, and outlet means are provided for venting hot air from the exposure chamber into the ambient environment. Vacuum means are provided for exhausting ammonia-laden air from the developing chamber, and an absorber chamber is provided which is in fluid communication therewith, cartridge means being disposed within the absorber chamber for selectively absorbing ammonia fumes. Ammonia-laden fumes are drawn from the developing chamber into the absorber cartridge and then exhausted into the ambient environment.
15 Citations
11 Claims
-
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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
- 10. A lamp end housing for use with a fluorescent tube adapted to provide illumination for exposing an original image onto diazo copying material in an exposure chamber of a two chamber diazo copy machine, said lamp end housing being provided with means forming an aperture therein for admitting ambient air into the exposure chamber.
Specification