EP0557845A1 - Procédé et dispositif pour le séchage de supports de couches photographiques en forme de bandes ou de feuilles - Google Patents

Procédé et dispositif pour le séchage de supports de couches photographiques en forme de bandes ou de feuilles Download PDF

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Publication number
EP0557845A1
EP0557845A1 EP93102328A EP93102328A EP0557845A1 EP 0557845 A1 EP0557845 A1 EP 0557845A1 EP 93102328 A EP93102328 A EP 93102328A EP 93102328 A EP93102328 A EP 93102328A EP 0557845 A1 EP0557845 A1 EP 0557845A1
Authority
EP
European Patent Office
Prior art keywords
heat radiation
heat
layer support
degree
sheet
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.)
Granted
Application number
EP93102328A
Other languages
German (de)
English (en)
Other versions
EP0557845B1 (fr
Inventor
Herbert Dr. Schaffer
Horst Dipl.-Ing. Kreiner
Karl-Heinz Bauer
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 EP0557845A1 publication Critical patent/EP0557845A1/fr
Application granted granted Critical
Publication of EP0557845B1 publication Critical patent/EP0557845B1/fr
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
    • 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 method according to the preamble of claim 1 and a device according to the preamble of claim 5.
  • the object of the invention is therefore to specify a method and to provide an apparatus for carrying out the method, with which uniform and film-gentle drying can be achieved despite partially different heat absorption of the photographic support.
  • the object is achieved by the characterizing features of method claim 1 and by the characterizing features of device claim 5.
  • the invention adopts the knowledge that heat radiation, the intensity of which is automatically regulated in accordance with the degree of absorption of the substrate, avoids that the substrate is either not completely dried or damaged by overheating.
  • a measuring sensor is provided which measures the degree of absorption of the photographic support at the point which is exposed to the thermal radiation.
  • the figure shows a film 1, which is transported in the direction of arrow T by a transport device, not shown.
  • the film passes through a drying device.
  • Heating elements 2 are arranged in this drying device.
  • a mirror 3 concentrates the heat radiation emitted by the heating elements 2 on the film 1.
  • Windows 4 are present in the material of the mirror 3, behind which measuring elements 5 are arranged. Each measuring element detects an area 6 on the film 1 and measures the thermal radiation penetrating the film.
  • a reference sensor 7 which directly measures the heat radiation emitted by the heating elements 2.
  • the transmission of the film 1 in the region 6 can be determined on the basis of the signals supplied by the measuring element 5 and by the reference sensor 7. With several measuring elements 5, each measuring the transmission of the film 1 at different points, an average value of the transmission can be calculated for the area of the film 1 which is currently in the drying device.
  • the transmission is a measure of the degree of absorption of the thermal radiation in the substrate. At high The degree of absorption is low, but high for low transmission.
  • a control device 8 automatically adjusts the heat radiation intensity emitted by the heating elements 2
  • the drying device As the film 1 is transported further in the direction of the arrow T, another part of the film 1 reaches the drying device.
  • the transmission present in this part of the film is immediately detected by the measuring elements 5. Based on the new measured values, if necessary, the heat radiation intensity emitted by the heating elements 2 is changed immediately. This ensures that the part of the film 1 located in the drying device is always irradiated with the correct intensity, even if the transmission of the film, viewed over the entire film surface, is very different.
  • the degree of heat absorption of the film 1 can also be determined on the basis of the heat radiation emitted by the film 1. If the intensity of the thermal radiation emitted by the heating elements is known, the degree of absorption can be calculated from the measured value for the thermal radiation emitted by the film 1.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Drying Of Solid Materials (AREA)
EP93102328A 1992-02-27 1993-02-15 Procédé et dispositif pour le séchage de supports de couches photographiques en forme de bandes ou de feuilles Expired - Lifetime EP0557845B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4206048 1992-02-27
DE4206048A DE4206048C1 (fr) 1992-02-27 1992-02-27

Publications (2)

Publication Number Publication Date
EP0557845A1 true EP0557845A1 (fr) 1993-09-01
EP0557845B1 EP0557845B1 (fr) 1996-04-03

Family

ID=6452732

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93102328A Expired - Lifetime EP0557845B1 (fr) 1992-02-27 1993-02-15 Procédé et dispositif pour le séchage de supports de couches photographiques en forme de bandes ou de feuilles

Country Status (4)

Country Link
US (1) US5369894A (fr)
EP (1) EP0557845B1 (fr)
DE (2) DE4206048C1 (fr)
DK (1) DK0557845T3 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3417605B2 (ja) * 1993-07-20 2003-06-16 富士写真フイルム株式会社 感光材料乾燥制御方法及び装置
US5537925A (en) * 1993-09-03 1996-07-23 Howard W. DeMoore Infra-red forced air dryer and extractor
US5966836A (en) * 1997-04-11 1999-10-19 Howard W. DeMoore Infrared heating apparatus and method for a printing press
US6026748A (en) * 1997-11-11 2000-02-22 Oxy-Dry Corporation Infrared dryer system for printing presses
DE29901402U1 (de) * 1998-01-27 1999-05-12 DeMoore, Howard W., Dallas, Tex. Zwischenstationäre Infrarotheizung
US6401360B1 (en) * 2000-04-13 2002-06-11 Eastman Kodak Company Apparatus and method for drying photosensitive material using a radiant heat assembly
US6877247B1 (en) 2000-08-25 2005-04-12 Demoore Howard W. Power saving automatic zoned dryer apparatus and method
US6753512B1 (en) * 2002-01-02 2004-06-22 Simtek, Inc. Model-based control system for thermally treating webs
SE535329C2 (sv) * 2010-11-29 2012-06-26 Andritz Tech & Asset Man Gmbh Metod för att torka en massabana och en massatork innefattande en inspektionsanordning för analysering av massabanans position eller förekomst av massarester

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3864843A (en) * 1972-03-14 1975-02-11 Agfa Gevaert Ag Apparatus for continuously measuring the surface temperature of moving webs
EP0068207A1 (fr) * 1981-06-19 1983-01-05 Minnesota Mining And Manufacturing Company Appareil de séchage de films photographiques par des rayons infrarouges
EP0070390A1 (fr) * 1981-06-24 1983-01-26 Agfa-Gevaert AG Appareil de séchage des films photographiques en forme de ruban ou de feuille
EP0383484A1 (fr) * 1989-02-10 1990-08-22 Eastman Kodak Company Séchage

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3900959A (en) * 1973-05-07 1975-08-26 Minnesota Mining & Mfg Combined infra-red and air flow drying for photographic film
US4665627A (en) * 1985-11-01 1987-05-19 Research, Incorporated Dry film curing machine with ultraviolet lamp controls
US4756091A (en) * 1987-06-25 1988-07-12 Herbert Van Denend Hybrid high-velocity heated air/infra-red drying oven
US4882992A (en) * 1988-07-29 1989-11-28 Airtech Company, Inc. Combination powder applying and/or infrared drying attachment for printing presses

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3864843A (en) * 1972-03-14 1975-02-11 Agfa Gevaert Ag Apparatus for continuously measuring the surface temperature of moving webs
EP0068207A1 (fr) * 1981-06-19 1983-01-05 Minnesota Mining And Manufacturing Company Appareil de séchage de films photographiques par des rayons infrarouges
EP0070390A1 (fr) * 1981-06-24 1983-01-26 Agfa-Gevaert AG Appareil de séchage des films photographiques en forme de ruban ou de feuille
EP0383484A1 (fr) * 1989-02-10 1990-08-22 Eastman Kodak Company Séchage

Also Published As

Publication number Publication date
DE4206048C1 (fr) 1993-01-07
DE59302080D1 (de) 1996-05-09
DK0557845T3 (da) 1996-07-29
US5369894A (en) 1994-12-06
EP0557845B1 (fr) 1996-04-03

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