EP0383484A1 - Séchage - Google Patents

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Publication number
EP0383484A1
EP0383484A1 EP90301323A EP90301323A EP0383484A1 EP 0383484 A1 EP0383484 A1 EP 0383484A1 EP 90301323 A EP90301323 A EP 90301323A EP 90301323 A EP90301323 A EP 90301323A EP 0383484 A1 EP0383484 A1 EP 0383484A1
Authority
EP
European Patent Office
Prior art keywords
paper
sensor
drying
amount
moisture
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.)
Pending
Application number
EP90301323A
Other languages
German (de)
English (en)
Inventor
Edward Charles Timothy Samuel Glover
Martyn Stuart Glover
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.)
Eastman Kodak Co
Original Assignee
Eastman Kodak Co
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 Eastman Kodak Co filed Critical Eastman Kodak Co
Publication of EP0383484A1 publication Critical patent/EP0383484A1/fr
Pending 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
    • F26B25/22—Controlling the drying process in dependence on liquid content of solid materials or objects
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B3/00—Drying solid materials or objects by processes involving the application of heat
    • F26B3/28—Drying solid materials or objects by processes involving the application of heat by radiation, e.g. from the sun
    • F26B3/283—Drying solid materials or objects by processes involving the application of heat by radiation, e.g. from the sun in combination with convection
    • 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 present invention relates to the drying of materials, particularly, but not exclusively, sheet or web materials such as photographic paper and film.
  • a number of methods for drying photographic paper for example that shown in British Patent Specification GB-A-1561897. This method involves directing radiant heat only on to the non-image-bearing side of the photographic paper as it travels through a drying chamber and simultaneously causing a stream of air to flow over the image-bearing side of the paper.
  • a method of drying a material comprising the steps of applying heat to at least one side of the material; and sensing the amount of moisture remaining in the material after it has been heated so as to determine whether any further drying is required.
  • apparatus for drying a material comprising heater means for applying heat to at least one side of the material, characterised in that at least one sensor is provided for measuring the amount of moisture remaining in the material after it has received heat from the heater means so as to determine whether any further drying is required.
  • the heater means comprises at least two heating stages, at least one sensor being positioned between adjacent stages.
  • Each sensor may be connected to control means which controls power supplied to the heater means.
  • the apparatus may further comprise blower means for blowing air on to at least one side of the material, and each sensor may be also connected to the control means in order to control the power supplied to the blower means.
  • Measurement of the moisture remaining in the material can be achieved by any convenient method.
  • at least one of the sensors may be a capacitance sensor.
  • contact conductive resistance sensors may be used.
  • Figure 1 illustrates drying apparatus in which a sheet or web of photographic paper 2 is being dried.
  • the paper 2 passes through the apparatus with its emulsion side uppermost.
  • Infra-red heaters 4, 4′ are positioned below the path of travel of the photographic paper 2, and are arranged in two stages. These heaters 4, 4′ are used to heat the wet emulsion layer of the paper, by conduction, through the base on to which the emulsion layer is coated. A reflector 18 is positioned around each heater 4, 4′ so that most of the heat generated by the heater is directed upwards on to the base of the photographic paper 2.
  • Squeegee rollers 8 are provided at the entry to the apparatus, the paper 2 entering the apparatus between these rollers.
  • the rollers 8 remove surface water which then passes out through a drain outlet 10.
  • Transport rollers 12 are provided at the exit from the apparatus. These rollers 12 direct the dried paper 2 on to further processing stages, for example, to cutting apparatus which cuts the paper into individual prints.
  • the squeegee rollers 8 and transport rollers 12 are driven (by means not shown) so as to direct the paper 2 into and out of the drying apparatus.
  • a sensor 14 is positioned halfway along the path which the paper 2 takes through the drying apparatus, that is between heater stages 4 and 4′.
  • the sensor 14 senses the amount of moisture left in the paper 2 as it passes that sensor (after passing through heaters 4).
  • the sensor 14 uses a proportional capacitance technique to determine the amount of moisture remaining in the paper.
  • the power supplied to the heaters 4′ which follow sensor 14 is controlled so as to, in turn, control the amount of further drying that takes place.
  • a fan 16 circulates air in the space 40 to provide a small quantity of cooling air for the sensor 14 and the backs of reflectors 18.
  • Wire guides 20 are provided to ensure that the paper 2 is transported across the heaters 4, 4′ to the transport rollers 12.
  • a sensor 22 is positioned after the transport rollers 12 so as to provide a final check on the amount of moisture in the paper 2 as it leaves the apparatus.
  • FIG. 2 A circuit which may be used to control the apparatus of Figure 1 is shown in Figure 2.
  • the circuit comprises a central logic controller 24 which has inputs 26 and 28 from the sensors 14 and 22 (not shown), and outputs 30, 32, 34 and 36 which are connected to the fans 6, fan 16, transport rollers 12 and heaters 4, 4′ respectively (also not shown).
  • the present invention has the advantage that the power consumption is minimised and the danger of overheating the paper is avoided. Also, the amount of drying is controlled independently of the temperature or humidity of the air being used to dry the material.
  • the present invention When the present invention is used in a dryer which operates with infra-red radiation and unheated air, it is very fast. In particular, a high level of power can be applied at the initial stage and then the need for any further drying determined as described above.
  • the present invention can be used in processing machines to dry coated exposed and processed material. It can also be used in drying any web or material, for example in coating operations, or in drying chemical solids out of solutions or other materials.
  • contact heating using a hot surface can also be employed where appropriate.
  • the wire guides 20 in contact with the base of the paper could be heated directly.
  • recycled hot air can also be employed.
  • Capacitance sensing is the preferred arrangement, although contact conductive resistance sensing can also be used.
  • the arrangement utilises heating the material from one side and blowing air from the other side
  • any other suitable arrangement could be used as long as the material is heated from at least one side.
  • both the heating and the blowing of air could be on the same side of the material.
  • the material could be heated from more than one side.
  • the air could be blown from more than one side.
  • the paper can pass through two heating stages, it is emphasised that any suitable number of heating stages can be employed as desired.
  • heating stages being provided by physically successive heaters, they could be provided by the paper being exposed to the same heaters more than once by recycling the paper through the same heaters.
  • the arrangement described above has the added advantage that it can be used under any climatic conditions without requiring further adjustment. Naturally, adjustment will need to be made to accommodate materials having different physical characteristics.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Microbiology (AREA)
  • Drying Of Solid Materials (AREA)
EP90301323A 1989-02-10 1990-02-08 Séchage Pending EP0383484A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8903064 1989-02-10
GB898903064A GB8903064D0 (en) 1989-02-10 1989-02-10 Drying

Publications (1)

Publication Number Publication Date
EP0383484A1 true EP0383484A1 (fr) 1990-08-22

Family

ID=10651502

Family Applications (2)

Application Number Title Priority Date Filing Date
EP90903027A Expired - Lifetime EP0458825B1 (fr) 1989-02-10 1990-02-08 Appareil de sechage
EP90301323A Pending EP0383484A1 (fr) 1989-02-10 1990-02-08 Séchage

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP90903027A Expired - Lifetime EP0458825B1 (fr) 1989-02-10 1990-02-08 Appareil de sechage

Country Status (10)

Country Link
EP (2) EP0458825B1 (fr)
JP (1) JP3107394B2 (fr)
KR (1) KR920701867A (fr)
AT (1) ATE117102T1 (fr)
AU (1) AU5090390A (fr)
CA (1) CA2046912A1 (fr)
DE (1) DE69016011T2 (fr)
GB (1) GB8903064D0 (fr)
MY (1) MY106328A (fr)
WO (1) WO1990009621A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992007222A2 (fr) * 1990-10-11 1992-04-30 Management & Guidance Services Limited Procede et appareil de sechage
EP0508254A1 (fr) * 1991-04-12 1992-10-14 Van Brandwijk Systems Programming B.V. Procédé et dispositif de traitement thermique d'une bande continue munie d'une composition fluide ou pâteuse
EP0557845A1 (fr) * 1992-02-27 1993-09-01 Agfa-Gevaert AG Procédé et dispositif pour le séchage de supports de couches photographiques en forme de bandes ou de feuilles
EP0581567A1 (fr) * 1992-07-31 1994-02-02 Kodak Limited Dispositif de séchage photographique utilisant la pression de l'air pour retenir le film sur le dispositif de transport
EP1906264A2 (fr) * 2006-09-27 2008-04-02 Xerox Corporation Module de conditionneur de média
CN112540506A (zh) * 2020-11-03 2021-03-23 陈慧灵 一种胶片烘干放置箱

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5479199A (en) * 1992-05-01 1995-12-26 Hewlett-Packard Company Print area radiant heater for ink-jet printer
US5399039A (en) * 1992-05-01 1995-03-21 Hewlett-Packard Company Ink-jet printer with precise print zone media control
ES2101944T3 (es) * 1992-05-01 1997-07-16 Hewlett Packard Co Impresora termica de chorro de tinta con una cabeza de impresion que tiene energia calorifica variable para diferentes medios.
US5406316A (en) * 1992-05-01 1995-04-11 Hewlett-Packard Company Airflow system for ink-jet printer
US5296873A (en) * 1992-05-01 1994-03-22 Hewlett-Packard Company Airflow system for thermal ink-jet printer
DE69304774T2 (de) * 1992-05-01 1997-02-20 Hewlett Packard Co Heizgebläseanordnung in einem Farbstrahldrucker
US5406321A (en) * 1993-04-30 1995-04-11 Hewlett-Packard Company Paper preconditioning heater for ink-jet printer
US5461408A (en) * 1993-04-30 1995-10-24 Hewlett-Packard Company Dual feed paper path for ink-jet printer
US5581289A (en) * 1993-04-30 1996-12-03 Hewlett-Packard Company Multi-purpose paper path component for ink-jet printer
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
US5774141A (en) * 1995-10-26 1998-06-30 Hewlett-Packard Company Carriage-mounted inkjet aerosol reduction system
DE102014111807B4 (de) * 2014-08-19 2019-08-22 Wolfgang Balga Vorrichtung und Verfahren zur Bearbeitung von Film

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1023002B (de) * 1954-11-20 1958-01-23 Mahlo Heinz Dr Ing Verfahren und Vorrichtung zum Regeln von Trockenmaschinen, insbesondere Gewebetrocknern, auf konstanten Feuchtegehalt des auslaufenden Trockengutes
US3864843A (en) * 1972-03-14 1975-02-11 Agfa Gevaert Ag Apparatus for continuously measuring the surface temperature of moving webs
US4142301A (en) * 1976-10-20 1979-03-06 Ciba-Geigy Ag Method and apparatus for drying photographic material
WO1988008949A1 (fr) * 1987-05-14 1988-11-17 Imatran Voima Oy Procede et appareil de sechage de materiaux a structure plane, tels des feuilles de bois

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5469689A (en) * 1977-11-15 1979-06-04 Mitsubishi Electric Corp Mositure rate control system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1023002B (de) * 1954-11-20 1958-01-23 Mahlo Heinz Dr Ing Verfahren und Vorrichtung zum Regeln von Trockenmaschinen, insbesondere Gewebetrocknern, auf konstanten Feuchtegehalt des auslaufenden Trockengutes
US3864843A (en) * 1972-03-14 1975-02-11 Agfa Gevaert Ag Apparatus for continuously measuring the surface temperature of moving webs
US4142301A (en) * 1976-10-20 1979-03-06 Ciba-Geigy Ag Method and apparatus for drying photographic material
WO1988008949A1 (fr) * 1987-05-14 1988-11-17 Imatran Voima Oy Procede et appareil de sechage de materiaux a structure plane, tels des feuilles de bois

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, vol. 3, no. 93 (M-68), 8th August 1979, page 138 M 68; & JP-A-54 69 689 (MITSUBISHI DENKI K.K.) 06-04-1979 *

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992007222A2 (fr) * 1990-10-11 1992-04-30 Management & Guidance Services Limited Procede et appareil de sechage
WO1992007222A3 (fr) * 1990-10-11 1992-05-29 Management & Guidance Services Procede et appareil de sechage
EP0508254A1 (fr) * 1991-04-12 1992-10-14 Van Brandwijk Systems Programming B.V. Procédé et dispositif de traitement thermique d'une bande continue munie d'une composition fluide ou pâteuse
EP0557845A1 (fr) * 1992-02-27 1993-09-01 Agfa-Gevaert AG Procédé et dispositif pour le séchage de supports de couches photographiques en forme de bandes ou de feuilles
US5369894A (en) * 1992-02-27 1994-12-06 Agfa-Gevaert Aktiengesellschaft Method of and apparatus for drying running webs of photographic material
EP0581567A1 (fr) * 1992-07-31 1994-02-02 Kodak Limited Dispositif de séchage photographique utilisant la pression de l'air pour retenir le film sur le dispositif de transport
EP1906264A2 (fr) * 2006-09-27 2008-04-02 Xerox Corporation Module de conditionneur de média
EP1906264A3 (fr) * 2006-09-27 2012-08-01 Xerox Corporation Module de conditionneur de média
CN112540506A (zh) * 2020-11-03 2021-03-23 陈慧灵 一种胶片烘干放置箱
CN112540506B (zh) * 2020-11-03 2021-12-17 李晓光 一种胶片烘干放置箱

Also Published As

Publication number Publication date
EP0458825A1 (fr) 1991-12-04
MY106328A (en) 1995-05-30
ATE117102T1 (de) 1995-01-15
WO1990009621A1 (fr) 1990-08-23
CA2046912A1 (fr) 1990-08-11
KR920701867A (ko) 1992-08-12
AU5090390A (en) 1990-09-05
JPH04503244A (ja) 1992-06-11
DE69016011D1 (de) 1995-02-23
GB8903064D0 (en) 1989-03-30
JP3107394B2 (ja) 2000-11-06
DE69016011T2 (de) 1995-08-10
EP0458825B1 (fr) 1995-01-11

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