Diazo copier with perforated vacuum tube and fume neutralizer

Details Diazo copier with perforated vacuum tube and fume neutralizer Diazo copier with perforated vacuum tube and fume neutralizer

G - Physics

03

D

95/87

G03D 7/00 (2006.01)

Patent

CA 1078654

DEVICE FOR AMMONIA FUME REDUCTION Abstract of the Disclosure In a diazo-type copying apparatus, an improvement to prevent external leakage of gaseous ammonia to the atmosphere. The apparatus is characterized by a developing chamber, transport means within the chamber, means for introducing ammonia gas to the chamber, a first enclosure enclosing the chamber for sealing it from the atmosphere, a second enclosure containing the first enclosure as well as a perforated vacuum tube for collecting ammonia gases escaping from the first enclosure as well as for scrubbing ammonia gases from developed copies prior to their exit to the atmosphere and exhausting the gases either to a liquid ammonia absorbing solution, a filter containing an ammonia absorbing solution, a cartridge containing ammonia absorbing pellets or a catalytic converter thereby preventing the ammonia gases from contaminating the atmosphere.

297944

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