Agfa-gevaert Ag

Erwin Geyken

Helmut Schausberger

Peter Dawidowitsch

Franz Ertl

Horst Koninger

Kurt Thate

Nikolaus Jelinek

Walter Becherer

Siegfried Schneider

Horst Kempe

Stephan Macher

Leo Van Bouwel

Alfons Kastl

Adolf Fleck

Rudolf Loistl

Gunter Schirk

Klaus Lehnert

Rudolf Brunner

Franz Lechner

Horst Rohr

Remi Vanhorebeek

Peter Mayer

Emile Frans Stievenart

Franz Heckl

Marcel Aelterman

Gustaaf De Loucker

Apparatus for removing strips of X-ray film from elongated flat envelopes, wherein the film is flanked by two foils of lead, has a table supporting two blade-like tools whose tips can be introduced into the open front end of an envelope so that each tool enters between a panel of the envelope and the outer side of the respective foil. The envelope is then advanced lengthwise so that the tools penetrate deeper into its interior whereby the envelope is severed along opposite marginal portions of the film by knives which are mounted on one of the tools. One of the panels is introduced into the nip of two advancing rolls downstream of the knives so that the one panel then pulls the envelope forwardly and the envelope is automatically opened by the knives. The leader of the exposed film is connected to the core of a reel which is driven in synchronism with the advancing rolls so that the film is convoluted onto the core of the reel. The separated panels of the envelope are deflected into a bin and the foils are caused to descend by gravity into collecting receptacles between the tools and the reel. The knives have cutting edges which are inclined with reference to the direction of advancement of the envelope.

Apparatus for removing strips of photosensitive material from flat

A developing device for a photographic layer carrier, particularly a film, includes two rotary transport roller pairs transporting a film in a horizontal direction over a bath containing a processing liquid. Two liquid-admitting chambers are positioned opposite to each other in spaced relationship to form a processing space through which the film is transported. Each chamber is subdivided into two portions by a comb-like partition which loosens vortexes generated in one chamber portion upon pumping the liquid thereinto and ensures a uniform distribution of the liquid discharged into the processing space through a slot provided in the second chamber portion.

Developing device for a horizontally, transported photographic layer

A strip of exposed film which issues from a developing machine is convoluted onto the core of a horizontal takeup reel whose flange or flanges rest on the peripheral surface of a horizontal roller which is driven to rotate the reel in a direction to convolute the strip. The strip is braked by a tensioning device between the developing machine and the reel, and the latter is thereby maintained in a first position of abutment with the concave internal surface of a first locating device and in contact with the driven roller. A spring-biased lever urges the reel to a second position in which the reel is out of contact with the roller and abuts against the concave inner side of a second locating device. The lever is free to move the reel sideways and to the second position as soon as the action of the tensioning device upon the strip is terminated, namely, as soon as the trailing end of the strip advances beyond the tensioning device. The first locating device is mounted between the second locating device and the tensioning device, and the two locating devices define a gap for the upper portion of the roller. The latter is nearer to the first than to the second locating device and its upper portion is engaged by the flange or flanges of the reel when the latter is held in the first position.

Apparatus for convoluting strips of photosensitive material or the like

A roller for transporting and/or squeezing sheet-like photographic material has a metallic tubular core. The core has a cylindrical central portion of relatively large diameter and a pair of cylindrical ends of smaller diameter which constitute journals for the roller. The journals merge into the central portion via respective conical transition portions which widen in the direction from the corresponding journal to the central portion. The central portion and transition portions are surrounded by an annular coating of rubber or a synthetic resin. The core is produced by swaging the ends of a tube having the same diameter as the central portion of the core so as to form the journals and the transitions portions. The core obtained in this manner is coated by extruding or injection molding a synthetic resin, or by vulcanizing rubber, on to the same. The roller is lightweight, stable and inexpensive to manufacture.

Roller for supporting material sensitive to radiation and, method of

A roller for transport and/or guidance of flexible webs or sheets of radiation-sensitive material has a grounded shaft and an antistatic cylindrical member which is coaxial with and surrounds the shaft and has a web- or sheet-contacting cylindrical peripheral surface. The cylindrical member consists of hard polyvinyl chloride, fine crystalline polyamide, polypropylene, polyethylene or a mixture of two or more such plastic materials. Pulverized silver or another pulverulent metal is embedded in the material of the cylindrical member. If the roller is rather long, the cylindrical member surrounds a hollow cylindrical metallic core whose end portions confine inserts which surround the respective end portions of the shaft.

Transporting roller for webs of photosensitive material or the like

A processing bath is accommodated in a container having a pipe which communicates with the interior of the container at two different locations of the latter. The bath is circulated through this pipe and a pump for circulation of the bath is provided in the pipe. Several tubes extend into the bath and each tube has an outlet opening in the region of the inlet end of the circulation pipe. The outlet openings of the tubes are all located at different levels below the surface of the bath. The tubes are respectively connected with supply pumps which, in turn, are connected with respective sources of concentrates and a diluent required to maintain the strength of the bath within predetermined limits. A sensor senses the amount of material processed in the bath and causes the supply pumps to pump the concentrates and diluent into the bath in dependence upon the amount of material processed. Since the concentrates and diluent enter the bath at different levels, they mix with the bath before coming into contact with one another. This prevents undesirable chemical reactions which might otherwise occur between the various constituents of the bath. The admission of the concentrates and diluent into the bath in the region of the inlet end of the circulation pipe insures rapid mixing of the concentrates and diluent with the bath so that the homogeneity of the latter is maintained.

Method and apparatus for processing exposed photographic material with

An apparatus for wet treatment of sheets or strips of photographic material has a small-volume treating chamber bounded by pairs of advancing rollers at its inlet and outlet ends. A lower wall of the chamber extends between the lower rollers of the pairs of advancing rollers and sealing lips bridge the gaps between such lower wall and the respective lower rollers. Treating liquid is admitted laterally into the chamber, transversely of the path of advancement of photographic material and at about the level of such path.

Apparatus for treating photographic materials

The apparatus includes a washing unit at which film is washed with wash water, including a wash-water tank containing a body of wash water, and also a drier unit from which drying air is continually exhausted. Exhausted drying air from the drier unit is transmitted into the body of wash water in the wash-water tank. Alternatively, or in addition thereto, exhausted drying air is transmitted into the outflow conduit system for spent wash water. The wash water becomes oxygen-enriched and when sewered the oxygen demand of any processing fluids in the wash water poses a reduced threat to lifeforms in rivers and streams. Disposal of exhausted drying air in this way eliminates the need for chimney discharge, and the like.

Wet-processing apparatus for photographic emulsion carriers with novel

An arrangement for developing latent images includes a mechanism for conveying an article which carries a latent image over a succession of containers which accommodate a developer, a washing fluid, a fixer and a washing fluid respectively. A pressure chamber is arranged above each container and the article passes through the pressure chambers. A pump is associated with each pressure chamber and pumps the respective fluid therein for contact with the article. A sensing device located at an upstream end of the arrangement senses the length of the article and causes a quantity of fresh developer, which is related to the size of the article, to be admitted into the container with the developer. Concomitantly, a corresponding amount of contaminated developer flows out of the container and into a collecting vessel. The sensing device activates a source of chemical neutralizing fluid and causes a quantity of the latter, which is related to the size of the article, to be admitted into the collecting vessel for neutralizing the contaminated developer. The container with the fixing bath is connected with a chamber which is provided with a pair of electrodes and the sensing device is also effective for causing current to be supplied to the electrodes so as to permit regeneration of contaminated fixer. The sensing device is further operative for causing a quantity of fresh washing fluid to be admitted into the downstream washing bath. The latter is in communication with the upstream washing bath so that washing fluid may be recycled between these baths. The downstream washing bath is provided with an outflow conduit so that, when the level in the washing bath exceeds a predetermined level, contaminated washing fluid flows out of the downstream washing bath. This contaminated washing fluid flows to the same collecting vessel as the contaminated developer for neutralization.

Method and arrangement for the development of latent images particularly

In a method for separately treating the used developing fluid from the remaining used photographic processing fluids prior to feeding the used fluids to a sewer system. The used developing fluid is continually withdrawn from the developing tank and chemically neutralized in a collecting vessel by a chemical oxidizing agent such as acetic acid or hydrogen peroxide prior to feeding the fluid to a sewer system. The method includes the continued withdrawal of spent fixer fluid to a silver recovery device and recirculation of the regenerated fixer fluid to the fixer tank.

Method for treating photographic processing fluids prior to sewering

An arrangement for developing latent images includes a mechanism for conveying an article which carries a latent image over a succession of containers which accommodate a developer, a washing fluid, a fixer and a washing fluid, respectively. A pressure chamber is arranged above each container and the article passes through the pressure chambers. A pump is associated with each pressure chamber and pumps the respective fluid therein for contact with the article. A sensing device located at an upstream end of the arrangement senses the length of the article and causes a quantity of fresh developer to be admitted into the container with the developer. Concomitantly, a corresponding amount of contaminated developer flows out of the container and into a collecting vessel. The sensing device activates a source of chemical neutralizing fluid and causes a quantity of the latter to be admitted into the collecting vessel for neutralizing the contaminated developer. The container with the fixing bath is connected with a chamber which is provided with a pair of electrodes and the sensing device is also effective for causing current to be supplied to the electrodes so as to permit regeneration of contaminated fixer. The sensing device is further operative for causing a quantity of fresh washing fluid to be admitted into the downstream washing bath, which latter is in communication with the upstream washing bath. The downstream washing bath is provided with an outflow conduit so that, when the level in the washing bath exceeds a predetermined level, contaminated washing fluid flows out of the downstream washing bath and into the same collecting vessel as the contaminated developer.

Apparatus for processing photographic film and treating contaminated

A roller to be used in apparatus for wet treatment of photographic material comprises a hollow metallic core and two inserts with coupling shafts provided therein. A coat of chemically resistant thermoplastic material is applied around and sealingly surrounds the core to protect it from the corrosive action of media used in the wet treatment process. The outer surface of the thus coated roller is thereupon machined to a high-quality finish.

Roller

A method of mixing at least one chemical concentrate with a thinning fluid to form a predetermined amount of a mixture or solution having a predetermined composition, particularly for use in photographic processing operations. Predetermined amounts of the concentrates are placed into respective holding units. The contents of the holding units are emptied into a mixing conduit which leads to a supply tank while at the same time thinning fluid is passed through the mixing conduit. The flow of thinning fluid through the mixing conduit is terminated when the amount of thinning fluid which has been passed through the mixing conduit reaches the amount corresponding to the predetermined amounts of the initial concentrates and to the predetermined amount of final solution or mixture desired.

Method and apparatus for preparing photoprocessing solutions, and the

An apparatus and method for neutralizing waste film-processing fluids discharged from a plurality of work stations containing film-processing fluids utilize a container adapted to receive the waste fluids as well as a predetermined quantity of neutralizing fluid. The quantity of neutralizing fluid admitted into the container is a function of the number and/or size of the film-emulsion carriers to be processed in the work station and/or a function of the fluid content of the container itself. A sensor is provided to detect the fluid contents of the container and cooperates with a control value so as to admit the predetermined quantity of neutralizing fluid into the container. A discharge pump is also provided to discharge the neutralized fluid contents of the container to a discharge area.

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Neubiberg, Germany

Erwin Geyken