US3511652A - Process for the reproduction of information by short-duration,high-intensity exposure of a heat-sensitive material to visible light - Google Patents

Process for the reproduction of information by short-duration,high-intensity exposure of a heat-sensitive material to visible light Download PDF

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Publication number
US3511652A
US3511652A US557259A US3511652DA US3511652A US 3511652 A US3511652 A US 3511652A US 557259 A US557259 A US 557259A US 3511652D A US3511652D A US 3511652DA US 3511652 A US3511652 A US 3511652A
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US
United States
Prior art keywords
heat
radiation
exposure
visible light
sensitive material
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 - Lifetime
Application number
US557259A
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English (en)
Inventor
Marcel Nicolas Vrancken
Wolfgang Lassig
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 Gevaert NV
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Filing date
Publication date
Application filed by Agfa Gevaert NV filed Critical Agfa Gevaert NV
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Publication of US3511652A publication Critical patent/US3511652A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/26—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used
    • B41M5/40—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used characterised by the base backcoat, intermediate, or covering layers, e.g. for thermal transfer dye-donor or dye-receiver sheets; Heat, radiation filtering or absorbing means or layers; combined with other image registration layers or compositions; Special originals for reproduction by thermography
    • B41M5/46—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used characterised by the base backcoat, intermediate, or covering layers, e.g. for thermal transfer dye-donor or dye-receiver sheets; Heat, radiation filtering or absorbing means or layers; combined with other image registration layers or compositions; Special originals for reproduction by thermography characterised by the light-to-heat converting means; characterised by the heat or radiation filtering or absorbing means or layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/26—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used
    • B41M5/36—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used using a polymeric layer, which may be particulate and which is deformed or structurally changed with modification of its' properties, e.g. of its' optical hydrophobic-hydrophilic, solubility or permeability properties
    • B41M5/368—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used using a polymeric layer, which may be particulate and which is deformed or structurally changed with modification of its' properties, e.g. of its' optical hydrophobic-hydrophilic, solubility or permeability properties involving the creation of a soluble/insoluble or hydrophilic/hydrophobic permeability pattern; Peel development

Definitions

  • the present invention relates to a process for the production of copies by a brief intensive exposure, especially by reflex exposure, the copying material being exposed to light comprising substantially no infrared radiation.
  • Suitable copying materials for use in the flash exposure technique are described in Belgian patent specifications 656,713 and 674,869 respetcively and in the specification of Marcel Nicholas Vrancken et al., US. application Ser. No. 550,834, filed May 17, 1966.
  • Suitable materials according to the latter Belgian patent specification comprise a recording layer wherein an imagewise change in solubility or permeability for water or aqueous solutions is obtained by heating.
  • G 10% aqueous solution of gelatin 5O 40% aqueous dispersion of poly(ethylene) having a particle size of 0.1a and an average molecular weight between 15,000 and 30,000 Water 320 60% aqueous dispersion of carbon 4 5% aqueous solution of sodium tetradecylsulphate 40 The material is then dried with an air-stream. at 30 C.
  • the heat-sensitive copying material 30 is exposed reflectographically to an original 34 comprising coloured image parts by means of a xenon gas discharge lamp 35.
  • the exposed material is slightly Wetted with water and then with its heat-sensitive layer 33 pressed against a receiving paper.
  • the material and the receiving paper are conducted between two pressure rollers at a travelling speed of approximately 10 cm./sec., one of the rollers being heated to 35 C. When emerging from between the rollers, both materials are immediately peeled apart.
  • a thin stratum of the heat-sensitive layer 33 is transferred image-wise to the receiving paper so as to form a legible print in accordance with the original 34.
  • EXAMPLE 2 Production of the infrared filter A composition consisting of 50 g. of gelatin, 8 g. of Prussian blue, and 450 g. of water is applied to a gelatincoated cellulose triacetate support pro rate of 50 g. per sq. m. The resulting material is dried.
  • the absorption curve of the material is represented by the curve B in FIG. 1, the ordinate indicating the absorption and the abscissa indicating the wavelengths.
  • the filter is used in the same manner as described in Example 1 and yields a same improvement.
  • EXAMPLE 3 Production of a heat-sensitive material with built-in infrared material A composition consisting of 10 g. of a dispersion of 13 g. of Prussian blue in 300 g. of a 4.5% aqueous gelatin solution, 10 g. of a 12% aqueous solution of saponine, and 10 g. of a 2.5% aqueous solution of the sodium salt of the condensation product from oleic acid and methyl-- taurine is applied to a gelatin-coated cellulose triacetate support pro rata of 130 g. per sq. 111.
  • the resulting material is coated with a second layer pro rata of 36 g. per sq. m. from the following composition:
  • the material is then dried with an air-stream at 30 C.
  • An air-stream at 30 C.
  • EXAMPLE 4 A heat-sensitive material as described in the abovementioned Belgian patent specification 657,5 2, filed Dec. 23, 1964 by Agfa A.G. is processed as defined therein.
  • the original is a copy that comprises red image areas absorbing almost no infrared radiation and black image areas absorbing the infrared radiation very well.
  • the glass cylinder of the exposure apparatus is changed in such a way that the infrared radiation in the copying light is absorbed essentially, a true copy is obtained without diificulties.
  • the following alterations may be introduced in the glass cylinder of the exposure apparatus:

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Thermal Transfer Or Thermal Recording In General (AREA)
  • Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
US557259A 1965-06-12 1966-06-13 Process for the reproduction of information by short-duration,high-intensity exposure of a heat-sensitive material to visible light Expired - Lifetime US3511652A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEA49469A DE1242247B (de) 1965-06-12 1965-06-12 Verfahren zur Herstellung von Kopien durch Blitzbelichtung

Publications (1)

Publication Number Publication Date
US3511652A true US3511652A (en) 1970-05-12

Family

ID=6936889

Family Applications (1)

Application Number Title Priority Date Filing Date
US557259A Expired - Lifetime US3511652A (en) 1965-06-12 1966-06-13 Process for the reproduction of information by short-duration,high-intensity exposure of a heat-sensitive material to visible light

Country Status (6)

Country Link
US (1) US3511652A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
BE (1) BE682428A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
CH (1) CH464249A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (1) DE1242247B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
GB (1) GB1160225A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
NL (1) NL6608150A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3619157A (en) * 1966-10-24 1971-11-09 Agfa Gevaert Nv Thermo recording

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0373814A (ja) * 1989-08-15 1991-03-28 Jujo Paper Co Ltd 光出力、主波長識別方法
US5151595A (en) * 1990-10-16 1992-09-29 Simon Marketing, Inc. Imaging device and method for developing, duplicating and printing graphic media

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3121162A (en) * 1960-04-16 1964-02-11 Eastman Kodak Co Thermographic colloid transfer process
US3298833A (en) * 1960-12-30 1967-01-17 Gen Electric Method for storing information

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3121162A (en) * 1960-04-16 1964-02-11 Eastman Kodak Co Thermographic colloid transfer process
US3298833A (en) * 1960-12-30 1967-01-17 Gen Electric Method for storing information

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3619157A (en) * 1966-10-24 1971-11-09 Agfa Gevaert Nv Thermo recording

Also Published As

Publication number Publication date
DE1242247B (de) 1967-06-15
BE682428A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1966-12-13
CH464249A (de) 1968-10-31
NL6608150A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1966-11-25
GB1160225A (en) 1969-08-06

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