EP0070390B1 - Vorrichtung zum Trocknen von band- oder blattförmigen, fotografischen Schichtträgern - Google Patents

Vorrichtung zum Trocknen von band- oder blattförmigen, fotografischen Schichtträgern Download PDF

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Publication number
EP0070390B1
EP0070390B1 EP82105263A EP82105263A EP0070390B1 EP 0070390 B1 EP0070390 B1 EP 0070390B1 EP 82105263 A EP82105263 A EP 82105263A EP 82105263 A EP82105263 A EP 82105263A EP 0070390 B1 EP0070390 B1 EP 0070390B1
Authority
EP
European Patent Office
Prior art keywords
emulsion carrier
plane
drying
rollers
emulsion
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
Application number
EP82105263A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0070390A1 (de
Inventor
Franz Ertl
Adolf Fleck
Nikolaus Jelinek
Rudolf Loistl
Ernst Widemann
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 EP0070390A1 publication Critical patent/EP0070390A1/de
Application granted granted Critical
Publication of EP0070390B1 publication Critical patent/EP0070390B1/de
Expired legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03D—APPARATUS FOR PROCESSING EXPOSED PHOTOGRAPHIC MATERIALS; ACCESSORIES THEREFOR
    • G03D15/00—Apparatus for treating processed material
    • G03D15/02—Drying; Glazing
    • G03D15/022—Drying of filmstrips

Definitions

  • the invention relates to a device for drying tape or sheet-shaped photographic supports with arranged on both sides of a flat transport path of the support between pairs of transport rollers, a blower air inlet and a heating element in the form of a heating cell lying in a focal line of a curved mirror.
  • a device of a similar type using elliptical mirrors is known from DE-A 23 23 725.
  • such a device is relatively expensive, since three or four heating sources are required on each side of the film in order to achieve adequate drying and to protect the material in the process, that is to say not to subject the substrate to excessive heat.
  • no heat gradient can be achieved from the layer carrier inlet side to the layer carrier outlet side, by means of which the increasingly drying layer carrier can be exposed to less heat.
  • DE-C-932 288 describes a drying device with an arc-shaped layer carrier sheet and a heating rod lying in its axis and an arc-cylindrical reflector arranged coaxially to the latter.
  • the object of the invention is to develop a device of the type mentioned in such a way that, by achieving a heat gradient along the layer carrier web, sufficiently uniform and gentle drying is possible with little outlay on equipment.
  • the drying takes place within a heat gradient.
  • a greater radiation power is applied to the film than after a certain transport path when the film is almost dry. Due to the geometrical arrangement of the parabolic mirror, sufficient drying can thus be achieved with a single heating source per side of the substrate.
  • 1 denotes a partition between the wet area and the dry area of a developing machine.
  • the wet area running out there are two opposite pairs of transport rollers 2, 3 and 4, 5, which are driven by means not shown.
  • 2 to 5 distributor rollers 7 and 8 are arranged on the other side of the transport rollers, the lower distributor roller 7 on the two lower rollers 2 and 4 of the two transport roller pairs and the upper distributor roller 8 on the two upper rollers 3 and 5 of the transport roller pairs.
  • a passage 9 is formed in the partition 1, through which the layer support can be guided into the dry area.
  • a heating cell 10 is provided in the drying area, followed by two pairs of transport rollers 11, 12 and 13, 14 in the direction of the exit.
  • the heating cell 10 is formed symmetrically to the layer support level 6, so that only a part of the heating cell needs to be discussed in the following description.
  • an infrared heating rod 16 which is arranged transversely to the transport direction 6 and which lies at the focal point of a cylindrical parabolic mirror 15.
  • the parabolic mirror 15 is held on webs 17 and is located in a housing 18 which has an air duct 18a for fresh air on the rear side of the parabolic mirror 15 and an oblique guide web 18b on the output side of the heating cell 10, which seen in the transport direction 6 to this and the first pair of transport rollers 11, 12 is inclined.
  • a deflection wall 18c which directs the incoming fresh air tangentially onto the layer support level 6 in direct current, so that it is moved between the parabolic mirror 15 or heating element 16 and the layer support level 6 in the transport direction.
  • the plane of symmetry 19 of the parabolic mirror 15 is now inclined relative to the layer support plane 6, in such a way that the base point 20 of the solder from the focal point of the parabolic mirror to the layer support plane is closer to the input 9 of the heating cell 10 than the intersection line 21 of the plane of symmetry 19 with the Layer support level 6.
  • the leg of the parabolic mirror 15 facing the input side of the heating cell 10 is thus shorter than the other leg.
  • the angle a, which the plane of symmetry 19 makes with respect to the layer support plane 6, is in a range from 60 to 80 °, preferably 70 to 75 °.
  • this arrangement of reflectors applies heating energy to a wide zone, this zone having a temperature gradient in the direction of transport of the layer support.
  • the radiation intensity is thus adapted to the decreasing water layer thickness.
  • Another advantage of the arrangement of the parabolic mirror 15 according to the invention is also therein to see that the surrounding components are only slightly heated in the dry area, since the output of the heating rods 16 can be reduced overall.
  • fresh air at room temperature is introduced through the duct 18a by means of a blower (not shown), which is deflected on the curved wall 18c and thus removes the water vapor produced during drying. Due to the direct current principle of the blown air, compared to conventional air swirling, the transport rollers 2 to 5 are not noticeably heated in front of the dryer unit, thus avoiding disadvantageous, undefined predrying of the layer support material on these rollers. In addition, the blown-in air in the area of the most intensive radiation prevents overheating of the drying goods. In order to achieve a laminar flow of air, the opening formed by the webs 18b at the end of the heating cell is chosen to be sufficiently large.
  • the transport rollers 2 to 5 in front of the drying area interact with the distributor rollers 7 and 8 in such a way that the water adhering to the material to be dried is evenly distributed on the latter.
  • the distribution rollers 7 and 8 have the task of evenly distributing the entrained liquid on the transport rollers 2 to 5 by the light pressure on the transport rollers, which in turn apply the distributed liquid to the material to be dried in an evenly distributed manner.
  • the drying material prepared in this way is dried in the subsequent heating cell with the same uniformity, which prevents the formation of stains on the substrate due to water stains drying later.
  • the heating rods 16 can be connected to a so-called pulse packet control 22, with which the output of the radiator can be varied.
  • a so-called pulse packet control 22 with which the output of the radiator can be varied.
  • the pulse packet control it is possible to adapt the wavelength of the radiation to the respective water film thickness, that is to say to provide a shorter wavelength for a thicker water film and a longer wavelength for thinner water films. This ensures that only enough energy is applied to the substrate that it is sufficient for water evaporation and prevents excessive heating of the substrate.
  • an X-ray film can be dried at a speed of 40 cm / min on a drying path of 4 cm, the output of the IR radiator being 200 to 400 watts and the delivery rate of the blowers being approximately 200 cbm / h.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Drying Of Solid Materials (AREA)
  • Photographic Processing Devices Using Wet Methods (AREA)
EP82105263A 1981-06-24 1982-06-16 Vorrichtung zum Trocknen von band- oder blattförmigen, fotografischen Schichtträgern Expired EP0070390B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3124688 1981-06-24
DE3124688A DE3124688C2 (de) 1981-06-24 1981-06-24 Vorrichtung zum Trocknen von band- oder blattförmigen, fotografischen Schichtträgern

Publications (2)

Publication Number Publication Date
EP0070390A1 EP0070390A1 (de) 1983-01-26
EP0070390B1 true EP0070390B1 (de) 1986-01-22

Family

ID=6135218

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82105263A Expired EP0070390B1 (de) 1981-06-24 1982-06-16 Vorrichtung zum Trocknen von band- oder blattförmigen, fotografischen Schichtträgern

Country Status (5)

Country Link
US (1) US4485565A (enrdf_load_stackoverflow)
EP (1) EP0070390B1 (enrdf_load_stackoverflow)
JP (1) JPS57212443A (enrdf_load_stackoverflow)
DE (1) DE3124688C2 (enrdf_load_stackoverflow)
DK (1) DK155239C (enrdf_load_stackoverflow)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4924599A (en) * 1985-11-04 1990-05-15 American Screen Printing Equipment Company UV curing apparatus
US4716658A (en) * 1986-12-11 1988-01-05 Amjo Infra Red Dryers, Inc. Heat lamp assembly
US4727655A (en) * 1987-02-02 1988-03-01 Amjo Infra Red Dryers, Inc. Heat lamp assembly with air duct
JPS63128557U (enrdf_load_stackoverflow) * 1987-02-16 1988-08-23
JPH071632Y2 (ja) * 1987-08-06 1995-01-18 富士写真フイルム株式会社 乾燥装置
US5158846A (en) * 1990-10-29 1992-10-27 Olin Corporation Electrostatic color printing system utilizing an image transfer belt
US5216820A (en) * 1991-09-25 1993-06-08 M & R Printing Equipment, Inc. Curing unit and method of curing ink
DE4206048C1 (enrdf_load_stackoverflow) * 1992-02-27 1993-01-07 Agfa-Gevaert Ag, 5090 Leverkusen, De
US6058621A (en) * 1998-06-05 2000-05-09 Eastman Kodak Company Apparatus and method for drying photosensitive material using radiant heat and air flow passages
US6401360B1 (en) 2000-04-13 2002-06-11 Eastman Kodak Company Apparatus and method for drying photosensitive material using a radiant heat assembly
US7225560B2 (en) * 2005-02-04 2007-06-05 Printing Research, Inc. Computer to plate curing system
US7685738B2 (en) * 2005-02-04 2010-03-30 Printing Research, Inc. Computer to plate color sensor and drying/curing system and method
DE102015206852A1 (de) * 2015-04-16 2016-10-20 Bundesdruckerei Gmbh Verfahren und Vorrichtung zum Herstellen eines Volumenhologramms in einem Fotopolymermaterial sowie Verfahren zum Herstellen eines Wert- oder Sicherheitsdokuments

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE932288C (de) * 1951-10-23 1955-08-29 Siemens Ag Einrichtung zum Trocknen von insbesondere fotografischen Papieren
DE2039206A1 (de) * 1970-08-06 1972-02-10 Agfa Gevaert Ag Filmtrockner
US3626155A (en) * 1970-11-30 1971-12-07 Irex Corp Electric oven
US3703156A (en) * 1971-04-28 1972-11-21 Dick Co Ab Apparatus for applying a conversion liquid to electrostatic copy material
IT965804B (it) * 1972-05-10 1974-02-11 Minnesota Mining & Mfg Procedimento e dispositivo per la asciugatura rapida di pellicole fotografiche
US3900959A (en) * 1973-05-07 1975-08-26 Minnesota Mining & Mfg Combined infra-red and air flow drying for photographic film
US4117604A (en) * 1977-03-31 1978-10-03 Pako Corporation Dryer for photographic processors
US4169007A (en) * 1977-10-26 1979-09-25 Flynn Drying System, Inc. Dryer-cooling machine for producing corrugated doubleface corrugated board
GB1581533A (en) * 1977-12-19 1980-12-17 Wallace Knight Ltd Apparatus for treating a sheet material with radiation
US4233498A (en) * 1979-02-01 1980-11-11 General Electric Company Power control for appliance using high inrush current element

Also Published As

Publication number Publication date
JPH0145910B2 (enrdf_load_stackoverflow) 1989-10-05
JPS57212443A (en) 1982-12-27
DK275882A (da) 1982-12-25
EP0070390A1 (de) 1983-01-26
DK155239B (da) 1989-03-06
DK155239C (da) 1989-09-18
US4485565A (en) 1984-12-04
DE3124688C2 (de) 1983-12-08
DE3124688A1 (de) 1983-01-13

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