Photography – Fluid-treating apparatus – Having fluid-circulating means
Patent
1997-10-29
1999-05-04
Rutledge, D.
Photography
Fluid-treating apparatus
Having fluid-circulating means
396636, G03D 302
Patent
active
058995951
ABSTRACT:
The apparatus comprises a housing (10) defining a treatment vessel (12.sup.2) having entrance and exit openings (16, 20) defining a sheet material path (22) therethrough. The lower opening (20) is closed by a pair of path-defining rollers (28, 26) biased into contact with each other to form a nip (28) through which the sheet material path (22) extends. The housing (10) includes a collecting chamber (50) positioned to collect treatment liquid which in use falls from the treatment vessel (12.sup.2) through one or both of the openings. The collecting chamber (50) is a closed chamber (50) and means (52) are provided to return treatment liquid from the collecting chamber (50) to the treatment vessel (12.sup.2). The construction has the advantage that the wastage of treatment liquid is reduced without requiring the use of complicated and costly sealing devices.
REFERENCES:
patent: 4166689 (1979-09-01), Schausberger et al.
patent: 4687313 (1987-08-01), Taniguchi et al.
patent: 5541698 (1996-07-01), Van Den Bergen
patent: 5652939 (1997-07-01), Verlinden et al.
patent: 5737662 (1998-04-01), Verlinden et al.
patent: 5754914 (1998-05-01), Van Den Bergen et al.
patent: 5771090 (1998-06-01), Verlinden et al.
Bergen Patrick Van den
Verlinden Bartholomeus
AGFA-GEVAERT N.V.
Rutledge D.
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