EP0562401B1 - Verarbeitung fotografischer Materialien - Google Patents

Verarbeitung fotografischer Materialien Download PDF

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Publication number
EP0562401B1
EP0562401B1 EP93104153A EP93104153A EP0562401B1 EP 0562401 B1 EP0562401 B1 EP 0562401B1 EP 93104153 A EP93104153 A EP 93104153A EP 93104153 A EP93104153 A EP 93104153A EP 0562401 B1 EP0562401 B1 EP 0562401B1
Authority
EP
European Patent Office
Prior art keywords
bath
processing
immersed
process according
tank
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP93104153A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0562401A1 (de
Inventor
Wilfried Hehn
Viktor Dipl.-Ing. Osegowitsch
Ubbo Dr. Wernicke
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Agfa Gevaert AG
Original Assignee
Agfa Gevaert AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Agfa Gevaert AG filed Critical Agfa Gevaert AG
Publication of EP0562401A1 publication Critical patent/EP0562401A1/de
Application granted granted Critical
Publication of EP0562401B1 publication Critical patent/EP0562401B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C5/00—Photographic processes or agents therefor; Regeneration of such processing agents
    • G03C5/26—Processes using silver-salt-containing photosensitive materials or agents therefor

Definitions

  • Photographic silver halide materials are typically processed in a multi-step process after imagewise exposure, at the end of which is a dry negative or positive color or black and white image.
  • the individual process steps - e.g. Developing, bleaching, fixing, watering, stabilizing - are usually carried out by immersing the material in a specific working solution for a predetermined time. With continuous operation and high-speed development machines, this means that the tanks for the individual process steps become very large and also very heavy due to the processing solution located therein.
  • a tank which is approximately Can take 70 m of photographic material. This is usually achieved by moving the material in loops over deflection rollers located in the tank, with some of the rollers being near the tank bottom and some of the rollers being just below the bath level, so that the material remains in the dwell time Tank is constantly in the solution.
  • the processing solution is continuously supplemented (regeneration) by adding a concentrate of the chemicals that are consumed in the respective processing.
  • This concentrate is usually supplied alone or together with water in an amount that leads to an overflow.
  • the overflow is necessary in many processing variants in order to discharge unwanted chemicals that arise during processing.
  • the overflow can be discarded or processed (rejuvenation). In both cases, the effort required increases with the amount of overflow. If the overflow is discarded, there is also a loss of valuable chemicals. As a result, the tendency of photographic processing tends to result in the smallest possible overflows and the lowest possible regeneration rates.
  • the residence time of the photographic material in the treatment tank is divided into several sections, the material alternately immersing and not immersing in the treatment bath in the treatment tank and the time in which the Immersing material in the bath, is a maximum of 50% of the total residence time in the processing stage concerned.
  • the dwell time in one processing stage is the time from the first immersion of the material in the treatment bath of this processing stage until the first immersion in the treatment bath of the next processing stage. In the last processing stage, the time ends at the first deflection roller after leaving the bath.
  • the measure according to the invention can be achieved in a simple manner by lowering the level of the processing solution in the tank (see FIG. 1).
  • processing solution After each immersion, 50 to 100 ml / m 2 of processing solution usually adhere to the photographic material. In a preferred embodiment of the method, this amount is reduced to 20 to 30 ml / m 2 , in particular on the deflection roller located above the bath level, by wiping or squeezing.
  • the material is immersed in the bath at least twice; preferably the material is immersed in the bath 2 to 20 times, in particular 3 to 12 times.
  • the time in which the material is immersed in the bath is preferably at most 40%, in particular at most 20%, of the total residence time in the processing stage in question.
  • the processing baths can be all known photographic processing baths, for example development, bleaching, fixing, bleach-fixing, reversing, conditioning, washing and stabilizing baths.
  • Each individual processing stage can include one or more tanks. If several tanks are used, particularly for watering, the treatment bath in these tanks can be run in countercurrent.
  • the process is suitable for all photographic materials that are processed in a continuous process, e.g. Color negative, color reversal and black and white films and papers.
  • tank volumes 10 to 1000 l.
  • the volumes of the processing solutions can be reduced to 1/5 to 1/100 of the tank volume.
  • the method according to the invention has the advantage that the systems in use can be converted with little effort and can be used further with the method according to the invention. It is only necessary to ensure that the liquid level can be reduced.
  • the effect of the volume reduction can be further increased by minor structural changes, namely by fitting shells around the lower deflection rollers which contain the processing liquid (see FIG. 1).
  • Fig. 1 shows the cross section through a processing tank.
  • Fig. 2 shows the cross section through a seven-stage watering cascade according to the invention.
  • Fig. 3 shows a squeezing station with fresh water supply for the irrigation.
  • the processing tank (1) contains upper (2) and lower deflection rollers (3), through which the photographic material (4) is continuously transported.
  • processing solution is filled in according to liquid level (5).
  • the liquid level is lowered to level (6), for example.
  • the amount of liquid can be further reduced by installing the shells (7) enveloping the lower deflection rollers (3).
  • the 7 washing tanks (8) also contain upper (2) and lower deflection rollers (3), via which the photographic material (4), the direction of which is indicated by an arrow, is continuously transported.
  • the level of the water in the tanks (8) is marked with (9).
  • the water is conducted in countercurrent to the material (4), added at (10) and removed at (11).
  • Squeezing stations are shown with (12), which are shown in more detail in FIG. 3.
  • Fig. 3 (2) again mean an upper and (3) a lower pulley.
  • the liquid level is marked with (8).
  • (13) and (14) are squeeze rollers over which the material (4), the layer side of which is identified by (15), is guided.
  • Treatment liquid in particular wash water, is added at the point indicated by the arrow (16).
  • a liquid meniscus forms at the point (17) between the material (4) and the squeeze roller (14).
  • the liquid is distributed over the entire width of the material by the distributor roller (18).
  • a commercially available photo paper is exposed with a gray step wedge and processed as follows: Color developer 94 CD 45 sec 35 ° C Bleach-fix bath 94 BX 45 sec 35 ° C Watering 4 x 22.5 sec Drying 90 sec
  • the material is immersed in processing bath 1 and 2 for 43 seconds each.
  • the transport from one bath to the next takes two seconds. See Table 1 for results.
  • the interval is structured as follows:
  • Example 2 The procedure is as in Example 1, but after the development, the residence time in the bleach-fixing bath is subdivided analogously to Example 3. See table for result.
  • a commercially available color negative film of 100 ASA sensitivity was exposed imagewise with a gray step wedge and developed according to the type in process C 41 / AP 70.
  • Example 5 The procedure is as in Example 5, but the bleaching time is divided into 5 equal and one extended interval: in each of the 6 intervals, the material is in the bath for 14 seconds and above the bath for 14 seconds. In the last interval, the material is in the bathroom for 14 seconds. Transfer to the next bathroom takes 18 seconds. When leaving the bath, the liquid is wiped off on the surface.
  • Example 6 The procedure is as in Example 6, but 8 identical intervals are formed, the material in each case being 10 seconds in the bath and 15 seconds above the bath. When leaving the bath, the liquid is wiped off on the surface.
  • Example 5 The procedure is as in Example 5, but after developing and bleaching according to the type, the fixing is divided into 10 equal intervals, the material being immersed in the bath for 5 seconds and outside the bath for 15 seconds is. When leaving the bath, the liquid is wiped off on the surface.
  • a commercially available photo paper was exposed with a gray step wedge, developed and fixed to bleach.
  • the material was then watered in a 4-way countercurrent cascade with a tank capacity of approximately 150 l water per tank.
  • Fresh water was added in an amount of 2 l / m 2 of material in the 4th stage. The material only emerged from the wash water during the transfer from one tank to the next.
  • the residence time in the wash water was over 90% of the total residence time in the washing step.
  • Example 9 The procedure was as in Example 9, but a 7-fold countercurrent cascade according to FIG. 2 with a tank content of about 10 liters of water / per tank used for irrigation.
  • the fresh water supply in the 7th tank was (a) 50 ml / m 2 , (b) 100 ml / m 2 and (c) 200 ml / m 2 .
  • the residence time of the material in the wash water was approximately 30% of the total residence time in the wash stage. At the end of each of the 7 washing stages, the adhering water was reduced to 25 ml / m 2 by stripping.
  • the total residence times and water temperatures in Examples 9 and 10 were the same.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)
  • Photographic Processing Devices Using Wet Methods (AREA)
EP93104153A 1992-03-26 1993-03-15 Verarbeitung fotografischer Materialien Expired - Lifetime EP0562401B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4209806A DE4209806A1 (de) 1992-03-26 1992-03-26 Verarbeitung fotografischer Materialien
DE4209806 1992-03-26

Publications (2)

Publication Number Publication Date
EP0562401A1 EP0562401A1 (de) 1993-09-29
EP0562401B1 true EP0562401B1 (de) 1997-12-10

Family

ID=6455053

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93104153A Expired - Lifetime EP0562401B1 (de) 1992-03-26 1993-03-15 Verarbeitung fotografischer Materialien

Country Status (3)

Country Link
EP (1) EP0562401B1 (ja)
JP (1) JP3244562B2 (ja)
DE (2) DE4209806A1 (ja)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9417320D0 (en) 1994-08-27 1994-10-19 Kodak Ltd Photographic processing apparatus
GB9417319D0 (en) * 1994-08-27 1994-10-19 Kodak Ltd Improvements in or relating to photographic processing

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2615932A1 (de) * 1976-04-10 1977-10-20 Edmund Klein Im durchlaufverfahren arbeitende entwicklungs- und bearbeitungsmaschine fuer fotografisch-chemische negativ- und positivprozesse

Also Published As

Publication number Publication date
DE4209806A1 (de) 1993-09-30
JPH0619065A (ja) 1994-01-28
DE59307801D1 (de) 1998-01-22
JP3244562B2 (ja) 2002-01-07
EP0562401A1 (de) 1993-09-29

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