EP0017093B1 - Entwicklungskammer - Google Patents

Entwicklungskammer Download PDF

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Publication number
EP0017093B1
EP0017093B1 EP80101467A EP80101467A EP0017093B1 EP 0017093 B1 EP0017093 B1 EP 0017093B1 EP 80101467 A EP80101467 A EP 80101467A EP 80101467 A EP80101467 A EP 80101467A EP 0017093 B1 EP0017093 B1 EP 0017093B1
Authority
EP
European Patent Office
Prior art keywords
recording material
metal blocks
developing chamber
development
developing
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
EP80101467A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0017093A1 (de
Inventor
Jochen Koblo
Götz Dr. von dem Bussche
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.)
Hoechst AG
Original Assignee
Hoechst 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 Hoechst AG filed Critical Hoechst AG
Publication of EP0017093A1 publication Critical patent/EP0017093A1/de
Application granted granted Critical
Publication of EP0017093B1 publication Critical patent/EP0017093B1/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
    • G03D13/00—Processing apparatus or accessories therefor, not covered by groups G11B3/00 - G11B11/00
    • G03D13/002—Heat development apparatus, e.g. Kalvar

Definitions

  • the invention relates to the development of a photographic recording material for the vesicular process with a layer, optionally on a support, of a mixture of polymeric binders and a compound which is evenly distributed therein and releases gas upon exposure to light.
  • the invention relates in particular to a development chamber for developing a photographic recording material for the vesicular process, consisting of a development housing, two heatable metal blocks and pairs of inlet and outlet rollers.
  • gas molecules are split off from the light-sensitive material, for example when using a diazo compound, nitrogen molecules which initially remain invisibly distributed in the layer, but diffuse together when heated due to softening of the layer material to form gas bubbles, which in turn expand. This makes the exposed areas opaque in transmitted light and bright in reflected light due to reflection and light scattering.
  • the principle of the vesicular method or the bubble photography is known, but could not really prevail because, for example, there were considerable difficulties in the procurement of coating materials, in the exposure and in the development.
  • exposure is carried out imagewise by bringing the recording material into contact with a transparent original and exposing it. The material is then heated at 70 to 150 ° C for about 0.1 to 3 seconds, creating a negative image of the original.
  • the recording material can be exposed to image cracks, whereupon the gas released from the layer is allowed to diffuse out of the photosensitive layer at a temperature which is too low for image development.
  • the recording material is then exposed uniformly in its entirety and then developed during or shortly after the second exposure, but before the gas formed diffuses substantially from the layer, between 70 and 150 ° C. for 0.1 to 3 seconds. This leads to an image development in the areas that were not originally struck by the light, so that an image is created analogous to the original image.
  • Various devices are known for developing the recording materials, such as, for example, an apparatus in which the recording material is passed in the form of a film around a roller which is heated to about 100 to 120 ° C. on the coating side.
  • An aluminum roller with a highly polished surface is used.
  • the disadvantage of this is that the temperature control is obviously not fully satisfactory, so that, for example, layer material sticks to the surfaces, making the recording material unusable.
  • a developing device consisting of a chamber heated to approximately 100 to 120 ° C., in which the recording material is deposited, developed in approximately 2 to 3 seconds and removed from the chamber again.
  • Such a development has the disadvantage that it cannot be carried out uniformly because the material warps in the chamber and is consequently overdeveloped in hotter places. As a result, the image areas partially disappear in accordance with the thermoplastic behavior of the layer material.
  • the object of the present invention was to provide a device for developing bubble-photographic recording material which, as far as possible, ensures a uniform development over the entire image area.
  • the solution to this problem is based on a development chamber for developing a photographic recording material for the vesicular process, consisting of a development housing, two heatable metal blocks and pairs of inlet and outlet rollers and is characterized in that the metal blocks 6 are adjustable in distance from one another, between which the recording material 7 is guided, wherein they are covered in the passage area 11 1 with a sliding material 4 which does not attack the surface of the recording material 7, and that a temperature control 8 is present which ensures temperature fluctuations of at most 1%.
  • the metal blocks can be heated to temperatures in the range from approximately 100 to 250 ° C., preferably 100 to 140 ° C.
  • the developer tion chamber a temperature fluctuation in the flow range 11 less than ⁇ 1.5 ° C.
  • the development chamber is independent of the position and can therefore guide the recording material both horizontally and vertically or in any direction in between.
  • the temperature in the developing chamber is primarily determined by the residence time of the recording material. A shorter residence time will be necessary at a higher temperature than at a relatively low temperature. The dwell time in turn also depends on the exposure time of the material, so that the present development chamber can be optimally adapted to all requirements.
  • the bubble-forming photographic recording material is developed rapidly and uniformly, and despite its thermal softening, it is neither scratched on the surface during development nor does the flatness of the layer support which may be present change.
  • the recording material 7 passes through the development chamber at a speed which is coordinated with the preceding exposure time and which is in a range between approximately 0.5 to approximately 7 m / min in the continuous mode.
  • the recording material is guided to the post-exposure station (not shown) for the purpose of, for example, destroying the remaining light-sensitive material and can then be used or stacked.
  • the respective driven rollers of the roller pairs can preferably be cooled in order to avoid pre- or post-exposure effects on the recording material.
  • recesses 10 can also be designed as openings such as holes or slots in the wall of the housing in order to achieve uniform heat dissipation.
  • the passage area 11 in the developing chamber for the photographic material 7 is adjustable in distance. The adjustment is made so that the distance between the coated metal block surface and the respective recording material surface is in a range from about 25 to 50 ⁇ m, preferably 30 ⁇ m. It has been shown that such a distance is optimal for the purpose of uniform heat conduction.
  • the temperature of the recording material is in a range from about 100 to 150 ° C, depending on its throughput speed. The temperature can be controlled so that fluctuations over the entire area are less than about 1%. If the temperature of the metal blocks is in a range of approximately 110-140 ° C, a temperature fluctuation of less than 1.5 ° C is achieved, with throughput speeds of approximately 2 m / min.
  • the development chamber is simple in construction, reliable and easy to service. It allows high quality bubble-forming photographic materials to be developed. Due to its design, it can be used in many different ways and can also be attached to any existing duplicating device, for example.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Photographic Developing Apparatuses (AREA)
  • Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
EP80101467A 1979-03-28 1980-03-20 Entwicklungskammer Expired EP0017093B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19797908775U DE7908775U1 (de) 1979-03-28 1979-03-28 Entwicklungskammer
DE7908775U 1979-03-28

Publications (2)

Publication Number Publication Date
EP0017093A1 EP0017093A1 (de) 1980-10-15
EP0017093B1 true EP0017093B1 (de) 1983-10-19

Family

ID=6702494

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80101467A Expired EP0017093B1 (de) 1979-03-28 1980-03-20 Entwicklungskammer

Country Status (4)

Country Link
US (1) US4317026A (ja)
EP (1) EP0017093B1 (ja)
JP (1) JPS6239397Y2 (ja)
DE (2) DE7908775U1 (ja)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH663234A5 (de) * 1983-02-10 1987-11-30 Escher Wyss Ag Zweiwalzenkalander mit beheizten walzen.
CH662837A5 (de) * 1983-02-10 1987-10-30 Escher Wyss Ag Kalander zur druck- und waermebehandlung von warenbahnen.
US4665303A (en) * 1984-11-09 1987-05-12 Fuji Photo Film Co., Ltd. Thermal developing apparatus
DE69122592T2 (de) * 1990-11-30 1997-02-27 Canon Kk Fixiervorrichtung und zugehöriges Tintenstrahlaufzeichnungsgerät
NL9201545A (nl) * 1992-09-04 1994-04-05 Oce Nederland Bv Stralingsfixeerinrichting.
JP3329763B2 (ja) * 1998-05-28 2002-09-30 富士写真フイルム株式会社 熱現像装置
US8672469B1 (en) 2012-09-28 2014-03-18 Ricoh Company, Ltd. Dryers that use rollers to define fire enclosure openings

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL275378A (ja) * 1961-03-06
US3230089A (en) * 1962-02-21 1966-01-18 Bell & Howell Co Rapid photographic developing
US3311040A (en) * 1964-04-08 1967-03-28 Minolta Camera Kk Heat-developing apparatus for positive picture copiers
US3417686A (en) * 1965-12-03 1968-12-24 Ibm Variable volume high pressure ammonia development device
US3449547A (en) * 1966-12-27 1969-06-10 Gaf Corp Thermographic developing apparatus
BE759790A (nl) * 1969-12-12 1971-06-03 Agfa Gevaert Nv Ontwikkelmachine voor fotografische materialen
BE757745A (fr) * 1969-12-29 1971-04-01 Ibm Procede et dispositif de regulation de la temperature d'un element de chauffage
US3629549A (en) * 1969-12-29 1971-12-21 Minnesota Mining & Mfg Heating device
FR2076301A5 (ja) * 1970-01-08 1971-10-15 Ingels Francis
US3833790A (en) * 1973-07-05 1974-09-03 Xerox Corp Heated pressure fusing system
US3902041A (en) * 1973-07-09 1975-08-26 Xerox Corp Dry film processing apparatus
US3864709A (en) * 1973-10-04 1975-02-04 Tektronix Inc Apparatus for processing recording material
US3985433A (en) * 1974-04-22 1976-10-12 Pitney-Bowes, Inc. Control circuit for electrostatic copying machine
US3940782A (en) * 1974-09-10 1976-02-24 Diazit Company, Inc. Diazotype developing apparatus with liquid metering assembly
US4052732A (en) * 1975-07-21 1977-10-04 Quantor Corporation Apparatus for developing and fixing heat sensitive film
US4116559A (en) * 1976-05-26 1978-09-26 Olympus Optical Co., Ltd. Process of and apparatus for forming a picture image information such as a manuscript, etc. on a dry treated film and developing the same
US4147422A (en) * 1978-04-17 1979-04-03 Quantor Corporation Method and apparatus for evacuating aqueous ammonia vapor from film developing chambers
US4194826A (en) * 1978-09-05 1980-03-25 Energy Conversion Devices, Inc. System for developing heat responsive film

Also Published As

Publication number Publication date
DE3065346D1 (en) 1983-11-24
US4317026A (en) 1982-02-23
JPS6239397Y2 (ja) 1987-10-07
EP0017093A1 (de) 1980-10-15
JPS55141130U (ja) 1980-10-08
DE7908775U1 (de) 1979-07-19

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