Title:
【発明の名称】溶液から銀塩の形で銀を除去する方法及び装置
Document Type and Number:
Japanese Patent JPH05504208
Kind Code:
A
Abstract:
PCT No. PCT/DK91/00038 Sec. 371 Date Aug. 5, 1992 Sec. 102(e) Date Aug. 5, 1992 PCT Filed Feb. 8, 1991 PCT Pub. No. WO91/12565 PCT Pub. Date Aug. 22, 1991By using a method of removing silver in the form of sparingly soluble silver salt, especially silver sulfide, from a solution containing another silver compound, such as a silver thiosulfate complex in a photographic fix or rinsing fluid by precipitation, the solution is subjected to electromagnetic irradiation with a wavelength below 375 nm. The irradiated liquid is led through a filter-like means 33 which binds the silver sulfide to its surface as crystalline silver sulfide. As a result, the silver sulfide is precipitated and deposited on the surface of the means as solid silver sulfide which in its turns acts as a catalyst for further precipitation and depositing of solid silver sulfide on the surface of the means. By binding the solid silver sulfide to the surface of the means, the required capacity of a possible subsequent filter is reduced.
Inventors:
Bush Sorensen, Thomas
Application Number:
JP50406491A
Publication Date:
July 01, 1993
Filing Date:
February 08, 1991
Export Citation:
Assignee:
Esco Photo Actiesl Scab
International Classes:
C02F1/30; C01G5/00; C02F1/32; C02F1/62; C02F9/00; G03C5/00; G03C5/395; G03D3/00; (IPC1-7): C02F1/30; C02F1/62; G03C5/00; G03C5/395; G03D3/00
Attorney, Agent or Firm:
Shoichi Takezawa (1 person outside)