US3249738A - Apparatus for producing photographic images and printing plates - Google Patents

Apparatus for producing photographic images and printing plates Download PDF

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Publication number
US3249738A
US3249738A US253150A US25315063A US3249738A US 3249738 A US3249738 A US 3249738A US 253150 A US253150 A US 253150A US 25315063 A US25315063 A US 25315063A US 3249738 A US3249738 A US 3249738A
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United States
Prior art keywords
drum
layers
heating
belt
supported
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Expired - Lifetime
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US253150A
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English (en)
Inventor
Simm Walter
Haydn Hildegard
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 NV
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Agfa AG
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Filing date
Publication date
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Publication of US3249738A publication Critical patent/US3249738A/en
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    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03D—APPARATUS FOR PROCESSING EXPOSED PHOTOGRAPHIC MATERIALS; ACCESSORIES THEREFOR
    • G03D9/00—Diffusion development apparatus
    • 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

  • CM L448 TORNEVS 3,249,738 APPARATUS FOR PRODUCING PHOTOGRAPHIC IMAGES AND PRINTING PLATES Walter Simm, Opladen, and Hildegard Haydn, Leverkusen, Germany, assignors to Agfa Aktiengesellschaft, Leverkusen, Germany, a corporation of Germany Filed Jan. 22, 1963, Ser. No. 253,150 Claims priority, application Germany, Feb. 10, 1962,
  • the invention relates to an apparatus for producing photographic images and printing plates from a lightsensitive layer exposed to form an image and a transfer layer in which apparatus the layers are pressed together and are heated. Images of opposite gradations are produced in the light-sensitive layers and in. the transfer layer: a negative image is produced in the light-sensitive layer and a non-laterally-reversed po s-tive copy of the original to be reproduced is obtained in the transfer layer.
  • light-senstitive layers are silver halide emulsion layers which contain tanning developers. If these layers are heated after they are exposed to form an image, the exposed areas are hardened, while the unexposed areas are transferred to the transfer layer and serve to produce a positive image. obtained relief images which can be used as printing plates. It is also possible to work with silver halide emulsion layers containing developer substances and with transfer layers which contain substances producing.
  • Heat-copying apparatus which comprise essentially an endless plastic band, which is guided over a plurality of guide rollers, and-a heat radiator, which supplies byradiation the heat necessary to develop the image.
  • the guiding means are such that the heat-sensitive paper and the original are pressed, one against the other, between the band and a guide pulley and are irradiated through the band.
  • the copy is formed by imagewise heating of the heat-sensitive paper, initiating a reaction which blackens the paper. Apparatus of this type is not suitable for the aforementioned heat-development processes, since .these require entirely different conditions.
  • the temperature of the drum is kept at to 250 C., preferably at 150, and is regulated by any conventional andjusting and maintaining device.
  • the photographicmaterials to be processed in the present apparatus are pressed, one against the other, in a closed space with the simultaneous action of moisture; the steam formed from the moisture cannot escape outwardly, but is forced, under pressure, on to the photographic layers.
  • the heating presses and drying drums hitherto employed these conditions could not be obtained, since a vapor-pervious and waterpermeable cloth is used. It is, moreover, desirable for the developing process that there be a temperature drop of 20 to 70 C. perpendicular to the plane of the layers which are heated and pressed together.
  • the rotational speed of the heating drum is preferably so regulated that the photographic layers remain a few .seconds, for example, 5 to 10 seconds, in the heating zone.
  • the pressure exerted'by the endless band on the heating drum is adjusted by means of adjustable guide rollers, preferably to 0.3 to 2 kg./cm.
  • the apparatus consists of a drum 1 which can be heated electrically and against which an endless band 2 of temperature-resistant, elastic, waterimpervious and vapor-tight material of low heat conductivity is so pressed that it covers a part of the drum periphery, for example half, and almost the full width of the drum.
  • the width of the band must also be greater than the Width of the negative or positive material.
  • a sealed development and transfer zone is then formed between the drum surface and the band by applying strong pressure to the band.
  • the said elastic band can be produced of any material which meets the conditions disclosed above. Suitable are,
  • silicon rubber on the basis of dimethyl polywith drum 1 and is heated to the reaction temperature
  • the temperature of the drum 1, into which an elecrtical heating arrangement is incorporated is adjusted so as to be substantially constant, by regulating members which include a fixed rodlike bimetallic strip 5, which projects axially into the rotatably mounted drum and which assumes, mainly by heat radiation, the temperature of the heated wall of the drum '1.
  • the roller 3c is so mounted that the mounting may be displaced in the direction indicated by the two arrows and thus the band tension can be adjusted. Since it is desirable for the pressure of the band on the drum at the end of the developing and transfer zone, i.e., the pressure between the drum 1 and roller 3b, to be adjustable, the mounting or bearings of the roller 3b may also be displaced inthe direction indicated by the arrow by pressure screws 6 on both bearings.
  • the support material is moistened by two moistening cylinders 7a and 7b, which are covered with absorbent elastic material and one of which may be immersed in a tank filled with water.
  • the cylinders 7a, 7b are so driven, through gearwheels 8a, 8b, 80 from the roller Bar, that a foil pushed a suitable feeding speed between the moistening cylinders. is guided to the inlet position between 3a and 1.
  • a stripper plate 9 is arranged in the position indicated.
  • Apparatus for producing photographic images for a heat transfer process from a supported light-sensitive silver halide emulsion layer being image wise exposed, developed and heated while in contact with a supported transfer layer comprising a rotatable drum disposed for receiving the supported layers with said layers contacting the surface of said drum at a feed portion and leaving the surface of said drum at a discharge portion, moistening means disposed adjacent said feed portion of said drum whereby the layers are passed through said moistenin g means and on to the surface of said drum, heating means for heating said drum, said drum having a vapor tight and water impervious surface upon which the layers are in contact, a movable endless belt contacting said surface of said drum between said feed portion and said discharge portion whereby said belt and the portion of said surface of said drum contacted by said belt form a heating zone,
  • said endless belt being of a water-impervious elastic material of low thermal conductivity whereby said heating zone is water impervious, said endless belt having a temperature between 20 and C. lower than said surface of said heating drum, and adjust-able guide means maintaining said belt in close contact with said surface of said drum.
  • said heating means includes a fixed bimetallic rod projecting axially into the rotatably mounted drum.
  • the moistening means consists of two moistening rollers positioned on opposite sides of and disposed for contacting said layers with the centers of said rollers substantially aligned with the point of contact of said rollers and said layers whereby said layers are simultaneously moistened by pressure from one side.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Photographic Developing Apparatuses (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)
US253150A 1962-02-10 1963-01-22 Apparatus for producing photographic images and printing plates Expired - Lifetime US3249738A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEA39431A DE1182958B (de) 1962-02-10 1962-02-10 Geraet zur Erzeugung von photographischen Bildern und Druckformen mit Hilfe von Waerme

Publications (1)

Publication Number Publication Date
US3249738A true US3249738A (en) 1966-05-03

Family

ID=6931361

Family Applications (1)

Application Number Title Priority Date Filing Date
US253150A Expired - Lifetime US3249738A (en) 1962-02-10 1963-01-22 Apparatus for producing photographic images and printing plates

Country Status (5)

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US (1) US3249738A (de)
AT (1) AT239058B (de)
CH (1) CH410633A (de)
DE (1) DE1182958B (de)
GB (1) GB983802A (de)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3336461A (en) * 1965-04-26 1967-08-15 Du Pont Machine for transferring thermoplastic images
US3359404A (en) * 1964-02-11 1967-12-19 Zindler Lumoprint Kg Apparatus for producing a picture
US3599560A (en) * 1970-01-12 1971-08-17 Swift & Co Sliced meat manufacture
US3685896A (en) * 1966-11-21 1972-08-22 Xerox Corp Duplicating method and apparatus
US4304985A (en) * 1980-05-27 1981-12-08 The United States Of America As Represented By The Secretary Of The Navy Developer for dry silver paper
US4822978A (en) * 1988-03-24 1989-04-18 Xerox Corporation Fuser system utilizing a pressure web
US4859831A (en) * 1988-06-15 1989-08-22 Xerox Corporation Fuser system
US4931618A (en) * 1987-12-18 1990-06-05 Sharp Kabushiki Kaisha Image glazing device

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2571426A (en) * 1950-01-24 1951-10-16 Doniak Michael Rotatable electrically heated drying cylinder
US2770534A (en) * 1949-03-16 1956-11-13 Printing Arts Res Lab Inc Method and material for making overlay masks
US2891165A (en) * 1955-03-28 1959-06-16 Minnesota Mining & Mfg Thermocopying machine
US2927210A (en) * 1958-05-21 1960-03-01 Minnesota Mining & Mfg Copying machine
US2986987A (en) * 1958-03-22 1961-06-06 Zindler Lumoprint Kg Device for making copies
US3012141A (en) * 1960-08-18 1961-12-05 Dietzgen Co Eugene Heating apparatus
US3027822A (en) * 1958-10-15 1962-04-03 Gen Aniline & Film Corp Diazotype developing apparatus
US3060023A (en) * 1959-08-05 1962-10-23 Du Pont Image reproduction processes
US3100702A (en) * 1960-03-30 1963-08-13 Eastman Kodak Co Dry processed photothermographic printing plate and process
US3142241A (en) * 1960-03-17 1964-07-28 Zindler Lumoprint Kg Method for developing films, a device and a material for carrying out this method
US3148612A (en) * 1961-05-22 1964-09-15 Bell & Howell Co Provision of moisture-rich atmosphere for processing heat developed photographic material
US3155024A (en) * 1956-11-28 1964-11-03 Polaroid Corp Photographic apparatus

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2770534A (en) * 1949-03-16 1956-11-13 Printing Arts Res Lab Inc Method and material for making overlay masks
US2571426A (en) * 1950-01-24 1951-10-16 Doniak Michael Rotatable electrically heated drying cylinder
US2891165A (en) * 1955-03-28 1959-06-16 Minnesota Mining & Mfg Thermocopying machine
US3155024A (en) * 1956-11-28 1964-11-03 Polaroid Corp Photographic apparatus
US2986987A (en) * 1958-03-22 1961-06-06 Zindler Lumoprint Kg Device for making copies
US2927210A (en) * 1958-05-21 1960-03-01 Minnesota Mining & Mfg Copying machine
US3027822A (en) * 1958-10-15 1962-04-03 Gen Aniline & Film Corp Diazotype developing apparatus
US3060023A (en) * 1959-08-05 1962-10-23 Du Pont Image reproduction processes
US3142241A (en) * 1960-03-17 1964-07-28 Zindler Lumoprint Kg Method for developing films, a device and a material for carrying out this method
US3100702A (en) * 1960-03-30 1963-08-13 Eastman Kodak Co Dry processed photothermographic printing plate and process
US3012141A (en) * 1960-08-18 1961-12-05 Dietzgen Co Eugene Heating apparatus
US3148612A (en) * 1961-05-22 1964-09-15 Bell & Howell Co Provision of moisture-rich atmosphere for processing heat developed photographic material

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3359404A (en) * 1964-02-11 1967-12-19 Zindler Lumoprint Kg Apparatus for producing a picture
US3336461A (en) * 1965-04-26 1967-08-15 Du Pont Machine for transferring thermoplastic images
US3685896A (en) * 1966-11-21 1972-08-22 Xerox Corp Duplicating method and apparatus
US3599560A (en) * 1970-01-12 1971-08-17 Swift & Co Sliced meat manufacture
US4304985A (en) * 1980-05-27 1981-12-08 The United States Of America As Represented By The Secretary Of The Navy Developer for dry silver paper
US4931618A (en) * 1987-12-18 1990-06-05 Sharp Kabushiki Kaisha Image glazing device
US4822978A (en) * 1988-03-24 1989-04-18 Xerox Corporation Fuser system utilizing a pressure web
US4859831A (en) * 1988-06-15 1989-08-22 Xerox Corporation Fuser system

Also Published As

Publication number Publication date
DE1182958B (de) 1964-12-03
CH410633A (de) 1966-03-31
AT239058B (de) 1965-03-10
GB983802A (en) 1965-02-17

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