Variable volume diazotype developing apparatus and method

Details Variable volume diazotype developing apparatus and method Variable volume diazotype developing apparatus and method

1979-08-29

1981-09-08

Hix, L. T.

Radiation imagery chemistry: process, composition, or product th

Post imaging processing

Physical developing

354324, 34 37, 430150, 138 30, G03D 700

Patent

active

042881552

ABSTRACT:
Diazotype developing apparatus and method in which a gaseous developing medium, such as a mixture of ammonia and air of predetermined concentration, is contained within a containing system, which includes the developing chamber of the apparatus, and the volume of the containing system is variable with only negligible changes in the pressure within the containing system so as to allow the volume of gaseous developing medium to be maintained within the containing system at essentially the same pressure as the pressure of the surrounding ambient atmosphere during variations in the volume of gaseous developing medium within the containing system resulting from operation of the apparatus.

REFERENCES:
patent: 3704661 (1972-12-01), Johnson et al.
patent: 3940782 (1976-02-01), Neeb et al.
patent: 3986191 (1976-10-01), Ackermann et al.
patent: 4048645 (1977-09-01), Reams
patent: 4166728 (1979-09-01), Degenhardt et al.

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