| 摘要 |
PURPOSE:To conserve the titled developing solution with a good stability by storing it in a vessel made of a plastic casing material having a specific oxygen permeability and relative humidity. CONSTITUTION:The above described developing solution contg. a developing agent, >=0.40mol/(l) sulfite and an alkaline reagent sufficient to make the pH of the solution to >=11.5 may be stored in the vessel made of the plastic casing material having preferably <=25ml/(m<2>).atom.day (20 deg.C relative humidity 65%) oxygen permeability, thereby maintaining the stable photographic performance for a long period. For example, polyvinylidene chloride and 'nylon(R)' etc. are used as the above described plastic casing material. |
