Vessel for the wet processing of photographic sheet material

Details Vessel for the wet processing of photographic sheet material Vessel for the wet processing of photographic sheet material

1998-06-12

1999-11-16

Rutledge, D.

Photography

Fluid-treating apparatus

Having fluid-circulating means

396636, 396612, G03D 302

Patent

active

059845422

ABSTRACT:
The vessel (10) comprises a housing (12) having openings (14, 16) closed by pairs of rotatable path-defining rollers (18, 20, 22, 24) through which a sheet material path (30) extends. Liquid level control means (38) define a dynamic liquid level (L) in the treatment chamber (32) above the sheet material path (30). A buffer comprises one or more drip chambers (34, 36) positioned to receive liquid escaping from the treatment chamber (32) through the nips (26, 28) and between the rotatable path-defining rollers (18, 20, 22, 24) and the housing (12). The buffer has a maximum total volume such that a static liquid level (S) is established below the sheet material path (30), without the buffer overflowing. In a non-operative condition, treatment liquid, which escapes through the nips and between the path-defining rollers and the housing, is all retained in the buffer, for later re-use as desired.

REFERENCES:
patent: 3635144 (1972-01-01), Beck
patent: 4187023 (1980-02-01), Schausberger et al.
patent: 5140355 (1992-08-01), Haag et al.

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