The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 02, 1996
Filed:
May. 06, 1994
Gerhard Ueffinger, Weinstadt-Grossheppach, DE;
Franz Huettemeister, Leinfelden-Echterdingen, DE;
Eastman Kodak Company, Rochester, NY (US);
Abstract
The invention relates to a method and apparatus for controlling electrolytic silver recovery for two film processing machines which enables the fixing baths to be connected with a silver recovery unit according to their level of silver concentration. According to the invention, the silver concentration in a fixing bath having a liquid connection with the silver recovery unit and in an unconnected fixing bath is continually calculated by electronic means and a control signal is generated when the difference in silver concentration between the connected and the unconnected fixing baths reaches a pre-definable level, said control signal causing actuators to connect the silver recovery unit with the fixing bath having the higher concentration of silver. When the silver concentration reaches a pre-definable level an electrolysing current in the silver recovery unit is switched on and remains switched on until the silver concentration falls below the pre-defined level.