Arrangement for and method of regenerating processing baths for

Details Arrangement for and method of regenerating processing baths for Arrangement for and method of regenerating processing baths for

1982-09-27

1985-12-03

Mathews, A. A.

354324, G03D 1300

Patent

active

045563055

ABSTRACT:
An apparatus for developing photosensitive material has a processing bath, and transporting devices for advancing several strips and/or sheets of photosensitive material through the bath side-by-side. The strips and sheets have various widths. A sensing system is provided to sense the surface area of the material advanced through the bath. The sensing system includes a plurality of spaced sensors arranged in a row which traverses the path of the material. The sensors are designed to sense the widths of the strips and/or sheets, and adjacent ones of the sensors are spaced from one another by a distance smaller than the magnitude of the smallest difference between the widths of the strips and/or sheets. The lengths of the strips and/or sheets are taken into account by a length measuring unit which determines the frequency with which the sensors scan the strips and/or sheets. When a predetermined total surface area is reached, a signal is sent to a control unit which opens a valve for a vessel containing a regenerating solution for the bath. A predetermined quantity of the regenerating solution then enters the bath.

REFERENCES:
patent: 3472143 (1969-10-01), Hixon et al.
patent: 3763758 (1973-10-01), Manack et al.
patent: 4021832 (1977-05-01), Krehbiel et al.
patent: 4057817 (1977-11-01), Korb et al.
Research Disclosure 15551, Mar. 1977, Eastman Kodak, Williams et al.

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