| 摘要 |
<p>The invention provides for the treatment of fixer medium in photographic processing. One the one hand, the fixer medium is extracted from the fixer station to a first treatment tank in which it is subjected to light electrolysis for regeneration of the fixer medium so that it can be re-circulated to the fixer station. When the fixer medium has reached a predetermined saturation condition of silver content, it is discharged from the first treatment station to a second treatment station where it is subjected to electrolysis for the removal of the silver. On the other hand, the fixer medium is constantly circulated from the fixer station to an electrolytic cell in which silver is extracted under an automatic control device which ensures that the electrolysing current is increased or decreased dependent upon the silver content of the fixer medium to ensure that the silver content keeps to a sensibly constant predetermined value.</p> |
