Chemical apparatus and process disinfecting – deodorizing – preser – Process disinfecting – preserving – deodorizing – or sterilizing – Process of storage or protection
Patent
1980-02-07
1981-09-01
Richman, Barry
Chemical apparatus and process disinfecting, deodorizing, preser
Process disinfecting, preserving, deodorizing, or sterilizing
Process of storage or protection
430 17, 430372, B01J 1914, B01J 1900
Patent
active
042871522
ABSTRACT:
Dye fading during archival storage of developed color photographic film (17) is retarded by placing the film in a sealed, opaque vault (10), introducing a dry, pressurized inert gas into the vault while the latter is vented, and sealing the vault after the air within the vault has been purged and replaced by the inert gas. Preferably, the gas is nitrogen; and the vault is stored at a temperature below room temperature to preserve the color photographic emulsions on the film contained within the vault. For short-term storage, sodium thiocyanate pads (36) charged with water are placed within the vault. For long term storage, the interior of the vault is kept at a low relative humidity.
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patent: 4066401 (1978-01-01), Solomon
Hoover Richard B.
Rhodes Charles M.
Beumer Joseph H.
Manning John R.
Richman Barry
The United States of America as represented by the Administrator
Wofford, Jr. Leon D.
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