EP0034376A2 - Méthode d'enregistrement thermosensible stéréographique - Google Patents

Méthode d'enregistrement thermosensible stéréographique Download PDF

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Publication number
EP0034376A2
EP0034376A2 EP81101180A EP81101180A EP0034376A2 EP 0034376 A2 EP0034376 A2 EP 0034376A2 EP 81101180 A EP81101180 A EP 81101180A EP 81101180 A EP81101180 A EP 81101180A EP 0034376 A2 EP0034376 A2 EP 0034376A2
Authority
EP
European Patent Office
Prior art keywords
thermosensitive
recording
thermo
stereo
coating layer
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
EP81101180A
Other languages
German (de)
English (en)
Other versions
EP0034376A3 (en
EP0034376B1 (fr
Inventor
Kenji Yabuta
Senji Tosa
Yasuhiko Oiri
Chihaya Tanaka
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.)
Mitsubishi Paper Mills Ltd
Japan Broadcasting Corp
Original Assignee
Mitsubishi Paper Mills Ltd
Nippon Hoso Kyokai NHK
Japan Broadcasting Corp
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 Mitsubishi Paper Mills Ltd, Nippon Hoso Kyokai NHK, Japan Broadcasting Corp filed Critical Mitsubishi Paper Mills Ltd
Publication of EP0034376A2 publication Critical patent/EP0034376A2/fr
Publication of EP0034376A3 publication Critical patent/EP0034376A3/en
Application granted granted Critical
Publication of EP0034376B1 publication Critical patent/EP0034376B1/fr
Expired legal-status Critical Current

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Classifications

    • 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
    • B41M5/28—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used using thermochromic compounds or layers containing liquid crystals, microcapsules, bleachable dyes or heat- decomposable compounds, e.g. gas- liberating
    • B41M5/287—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used using thermochromic compounds or layers containing liquid crystals, microcapsules, bleachable dyes or heat- decomposable compounds, e.g. gas- liberating using microcapsules or microspheres only
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M3/00—Printing processes to produce particular kinds of printed work, e.g. patterns
    • B41M3/16—Braille printing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M7/00—After-treatment of prints, e.g. heating, irradiating, setting of the ink, protection of the printed stock
    • B41M7/009—After-treatment of prints, e.g. heating, irradiating, setting of the ink, protection of the printed stock using thermal means, e.g. infrared radiation, heat

Definitions

  • thermosensitive stereo recording method relates to a thermosensitive stereo recording method, and more particularly it relates to such thermal recording method which is capable of transmitting or recording stereo information with cancavo-convexities by using in combination a thermosensitive stereo recording material having a coating layer mainly composed of heat-expandable microspheres and a thermo-recording medium applied with a thermoplastic ink coating layer.
  • Thermosensitive recording which is a recording method devised to form the images by making use of the physical or chemical changes of a substance by means of thermal energy, has prevailed widely in the field of information science. For instance, it has been applied to output recording in electronic computing machines and signal receiving and recording by facsimiles, let alone application to copying of documents, owing to its various advantageous features such as no noise during reccrding and adoption of a color forming system which requires no development and fixing. Particularly, an amazing advancement has been seen lately in its adaptation to the printers, plotters, facsimiles and such in order to meet the request of the society in recent years for treatment of a huge volume of information as hard copies at the highest possible output performance.
  • thermosensitive material A variety of methods have been devised for the preparation and application of thermosensitive material.
  • a thermosensitive material prepared by applying a color pigment or dye or powder of other like material such as carbon on a substrate and further applying thereon_a white opaque thermofusible substance.
  • a color-developing method by formation of a complex compound of-an electron donor and an acceptor and a color recording method in which a crystal violet lactone and a phenolic acidic material are dispersed in a binder such as polyvinyl alcohol and the dispersion is heated to develop color.
  • thermosensitive recording means such as mentioned above is ineffective for recording of concavo-convex stereo information.
  • the present invention has for its object to provide a thermosensitive stereo recording method which is capable of recording concavo-convex stereo information, such as braille for the blind, by combined use of a thermal recording device such as a printer or facsimile which is capable of converting electric information into thermal information and an exposure device.
  • thermosensitive stereo recording method of this invention can be accomplished by a thermosensitive stereo recording method of this invention according to which a thermosensitive stereo recording material obtained by forming a coating layer principally composed of heat-expandable microspheres on the surface of a support and a thermo-recording medium formed by coating the surface of a substrate with a thermoplastic ink layer are placed one upon the other such that their respective coating layers oppose to each other, then, if necessary, after press-bonding them integral to each other by a press roll device such as a calender or laminator, the thermoplastic ink coating layer is transferred onto the coating layer of said thermosensitive stereo recording material by a thermal recording device and, after removing said thermo-recording medium, the entire surface of the coating layer of said thermosensitive stereo recording material is exposed by an exposure means to obtain a concavo-convex image.
  • a thermosensitive stereo recording material obtained by forming a coating layer principally composed of heat-expandable microspheres on the surface of a support and a thermo-record
  • thermosensitive stereo recording method according to this invention is described hereinbelow with reference to the accompanying drawings.
  • Fig. 1 shows a condition in which a thermosensitive stereo recording material prepared by providing on the surface of a support 1 a coating layer principally composed of thermo-expandable microspheres and a thermo-recording medium prepared by forming a thermoplastic ink coating layer on the surface of a substrate 4 are placed in contact with each other such that the respective coating layers 2 and 3 oppose to each other.
  • a thermosensitive stereo recording material prepared by providing on the surface of a support 1 a coating layer principally composed of thermo-expandable microspheres and a thermo-recording medium prepared by forming a thermoplastic ink coating layer on the surface of a substrate 4 are placed in contact with each other such that the respective coating layers 2 and 3 oppose to each other.
  • thermoplastic ink coating layer 3 has been transferred to the coating layer 2 principally composed of heat-expandable microspheres according to a thermal information pattern by heating said thermoplastic ink coating layer 3 of the substrate 4 from back side thereof by a thermal recording head of a thermosensitive recording facsimile or other like device.
  • Fig. 3 shows a condition in which said thermo-recording medium is being separated away from said thermosensitive stereo recording material
  • thermosensitive stereo recording material 4 shows a condition where the entire surface of the coating layer 2 (principally composed of heat-expandable microspheres) of said thermosensitive stereo recording material has been subjected to uniform strong light irradiation by an exposure means 3 to effect selective heating and expansion of the image portion 5 by dint of difference in light absorption.
  • Both support 1 and substrate 4 are not subject to any specific restrictions in their material except for the requirement that the material used therefor should have a certain degree of strength, and for example, papers such as common paper, synthetic paper, laminate paper, etc., or resin films such as polyethylene, polystyrene or polypropylene films may be favorably used.
  • a thin-leaf paper such as condenser paper, glassine paper, tracing paper, etc., is most suited for the purpose of this invention as such paper has relatively good heat conductivity because of high density and minimized amount of air trapped in the paper layer.
  • the thermo-expandable coating layer 2 is principally composed of heat-expandable microspheres and a binder for bonding such microspheres to the support 1.
  • heat-expandable microspheres are the microspheres expanded upon heating, which are commercially available by the tradenames of Saran Microsphere (Dow Chemical), Micropearl (Matsumoto Yushi Seiyaku), etc.
  • Such heat-expandable microsphere is a hollow particle having a diameter of approximately 3 to 200 microns, with its capsule wall being formed from a thermoplastic material such as a vinylidene chloride-acrylonitrile copolymer.
  • This microsphere is substantially spherical in shape and contains in its hollow portion about 5 to 50% by weight of a volatile foaming agent such as n-butane, isobutane, neopentane, etc. Expanding temperature of said heat-expandable microspheres is 50 to 200°C, preferably 100 to 150°C.
  • the essential requirements for the binder used in this invention are that it has sufficient flexibility or strechability to form concavo-convexities of a proper height without affecting the expanding property of the microspheres, that it has good adhesion to the support and that it has excellent restoring ability against compression, and if these requirements are met, any type of binders, whether water-soluble type or organic solvent-soluble type, may be used in this invention.
  • water-soluble binders usable for the purpose of this invention include the natural or synthetic high- molecular compounds such as gelatin, polyvinyl alcohols, polyethylene glycol, hydroxyethyl cellulose, methoxy cellulose, carboxymethyl cellulose, polyvinyl pyrrolidone, polyacrylamide, polyacrylic acid, etc., and the aqueous polymer emulsions such as polyvinyl acetate emulsion, vinyl acetate-vinyl chloride copolymer emulsion, vinyl acetate-ethylene copolymer emulsion, styrene-butadiene copolymer emulsion, etc.
  • the natural or synthetic high- molecular compounds such as gelatin, polyvinyl alcohols, polyethylene glycol, hydroxyethyl cellulose, methoxy cellulose, carboxymethyl cellulose, polyvinyl pyrrolidone, polyacrylamide, polyacrylic acid, etc.
  • aqueous polymer emulsions
  • the organic solvent-soluble type binders usable in this invention include, for example, polyvinyl butylate, polystyrene, polyvinyl chloride, styrene-butadiene copolymer, ethylene-vinyl acetate copolymer, vinyl acetate-vinyl chloride copolymer, polyvinylidene chloride, vinylidene chloride-acrylonitrile copolymer, ethyl cellulose, nitrocellulose, polyvinyl acetate, saturated polyester resin, epoxy resin, silicon resin, alkyd resin, etc.
  • the heat-expandable microspheres are used in an amount of approximately 10 - 300 parts by weight, preferably approximately 70-200 parts by weight, for every 100 parts by weight of the binder composition.
  • the binder may contain, beside said heat-expandable microspheres, a suitable additive or additives, for example a viscosity modifier (such as starch, natural gum, ethyl cellulose, carboxymethyl cellulose, etc.). It is also possible to blend an inorganic filler such as talc, kaolin, zinc oxide, titanium oxide, calcium carbonate, silicon dioxide, etc., for improving whiteness.
  • the most preferred build-up of the heat-expandable microspheres is within the range of 5 to 50 g/m for the reasons of sensory perceptibility of the concavo-convex images and wear resistance against rubbing by the finger, etc.
  • thermo-recording medium obtained by providing a thermoplastic ink coating layer 3 on a substrate 4 is of the known type in which, as for example shown in Japanese Patent Publication No. 43787/1976 and Japanese Patent Laid-Open Nos. 115229/1977 and 84735/1978, the ink coating layer of said recording medium is fused by thermal energy of a thermosensitive recording facsimile, printer, etc., and transferred onto a recording paper placed in opposition to said ink coating layer to thereby effect recording.
  • a salient advantage of this invention resides in the fact that the device is capable of high-speed transmittance and recording of concavo-convex stereo information by using only a simple exposure means beside an ordinary thermosensitive recording facsimile that allows high-speed transmittance of a large volume of information, owing to use of a specific recording material consisting of said thermo-recording medium and a thermosensitive stereo recording material formed by providing a coating layer principally composed of heat-expandable microspheres on the surface of a support, said both recording members being attached to each other with their respective coating layers opposing to each other and, if necessary, press-bonded integral to each other by using a press roll device such as a calender or laminator.
  • thermosensitive stereo recording material (A) Preparation of thermosensitive stereo recording material
  • thermosensitive composition was then added with 1 g of methyl cellulose as thickener and stirred well.
  • the thus prepared thermosensitive composition was applied on a fine-quality paper by a wire bar and then dried to obtain a recording paper.
  • the coating weight after drying was 46 g/m 2 .
  • thermosensitive stereo recording material prepared according to the above-said method (A) and a thermo-recording medium prepared by coating a fine-quality paper with carbon black and a thermoplastic ink layer by hot-melt coating were attached to each other such that their respective coated surfaces opposed to each other, then the laminate was heated from the opposite side of the coated surface of said thermo-recording medium by a thermal recording head such as a thin-film head using a thin-film resistor of tantalum nitride, which is commercially sold as a unit for thermosensitive recording facsimiles, and said thermo-recording medium was stripped off from said thermosensitive stereo recording material to thereby form a light absorption pattern principally composed of carbon black and a thermoplastic wax on a thermo-expandable layer applied on the surface of said thermosensitive stereo recording material.
  • a thermal recording head such as a thin-film head using a thin-film resistor of tantalum nitride, which is commercially sold as a unit for thermosensitive recording facsimiles
  • thermosensitive stereo recording material was subjected to uniform and strong infrared irradiation to selectively heat and expand the image portion owing to the difference in light absorption to obtain a concavo-convex image corresponding to the light absorption pattern.
  • the height of the concavo-convexities measured by a surface roughness meter (mfd. by Tokyo Seimitsu) was 0.31 mm.
  • thermosensitive recording type facsimile receiver and scanned by adding a thermal signal corresponding to the facsimile signal on the thermo-recording medium side of a facsimile recording paper composed of said thermo-recording medium and thermosensitive stereo recording material, thereby developing the received image. Then the thermo-recording medium is separated from the thermosensitive stereo recording material to transfer the image onto said thermosensitive stereo recording material.
  • thermosensitive stereo recording material to which said image has been transferred, whereupon the image portion is heated and expanded to rise up owing to the difference in light absorption between the colored (black) image portion and the ground (white) and is thereby recorded as a concave-convex braille writing.
  • the present invention has enabled easy transmission and recording of concave-convex stereo information like braille for the blind by the electrical communication means by making use of a heat-expandable thermosensitive recording paper, a thermosensitive recording facsimile and a simple exposure means.

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  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Thermal Sciences (AREA)
  • Toxicology (AREA)
  • Optics & Photonics (AREA)
  • Thermal Transfer Or Thermal Recording In General (AREA)
  • Electronic Switches (AREA)
  • Heat Sensitive Colour Forming Recording (AREA)
EP19810101180 1980-02-19 1981-02-19 Méthode d'enregistrement thermosensible stéréographique Expired EP0034376B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP19416/80 1980-02-19
JP1941680A JPS56115294A (en) 1980-02-19 1980-02-19 Heat-sensitive three-dimensional recording method

Publications (3)

Publication Number Publication Date
EP0034376A2 true EP0034376A2 (fr) 1981-08-26
EP0034376A3 EP0034376A3 (en) 1982-08-04
EP0034376B1 EP0034376B1 (fr) 1985-01-09

Family

ID=11998646

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19810101180 Expired EP0034376B1 (fr) 1980-02-19 1981-02-19 Méthode d'enregistrement thermosensible stéréographique

Country Status (3)

Country Link
EP (1) EP0034376B1 (fr)
JP (1) JPS56115294A (fr)
DE (1) DE3168093D1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0376322A2 (fr) * 1988-12-29 1990-07-04 Minolta Camera Kabushiki Kaisha Méthode pour la formation d'images en trois dimensions
EP0693384A1 (fr) * 1994-07-21 1996-01-24 Brother Kogyo Kabushiki Kaisha Feuille capable d'expansion par la chaleur
GB2348509A (en) * 1998-11-18 2000-10-04 Eastman Kodak Co Dye-donor element with a transferable protection overcoat
EP1293357A1 (fr) * 2001-09-12 2003-03-19 Dai Nippon Printing Co., Ltd. Feuille pour transfert thermique procédé pour sa fabrication, et méthode pour former des images utilisant cette feuille
EP1683826A2 (fr) 2005-01-25 2006-07-26 Hansgeorg Neubig Procédé de fabrication d'une structure en relief tridimensionnel sur la surface d'un support, composite stratifié pour la préparation d'un tel procédé et utilisation d'une structure en relief préparée au moyen de ce procédé

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6360392U (fr) * 1986-10-03 1988-04-21
US4905016A (en) * 1987-08-21 1990-02-27 Graphtec Kabushiki Kaisha Recorder with a pencil pen and method therefor
JPH08216511A (ja) * 1995-02-15 1996-08-27 Brother Ind Ltd 立体画像形成用シート

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1122555B (de) * 1958-01-13 1962-01-25 Minnesota Mining & Mfg Zurichtverfahren fuer Hochdruck und Mittel hierfuer
US3779761A (en) * 1972-01-17 1973-12-18 Minnesota Mining & Mfg Presensitized light-sensitive letterpress printing makeready

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5040667B2 (fr) * 1971-10-20 1975-12-25
JPS5544717B2 (fr) * 1972-08-09 1980-11-13
US3859094A (en) * 1973-01-05 1975-01-07 Minnesota Mining & Mfg Sheet material useful in image transfer techniques
DE2921011C2 (de) * 1979-05-23 1981-04-23 Matsumoto Yushi-Seiyaku Co., Ltd., Yao, Osaka Verfahren zum Erzeugen eines Reliefs

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1122555B (de) * 1958-01-13 1962-01-25 Minnesota Mining & Mfg Zurichtverfahren fuer Hochdruck und Mittel hierfuer
US3779761A (en) * 1972-01-17 1973-12-18 Minnesota Mining & Mfg Presensitized light-sensitive letterpress printing makeready

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
XEROX DISCLOSURE JOURNAL, vol. 1, no. 6, June 1976, page 35, Stamford Connecticut, (USA), R.A. PARENT: 'Lithographic masters using xerography' *

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0376322A2 (fr) * 1988-12-29 1990-07-04 Minolta Camera Kabushiki Kaisha Méthode pour la formation d'images en trois dimensions
EP0376322A3 (fr) * 1988-12-29 1991-07-17 Minolta Camera Kabushiki Kaisha Méthode pour la formation d'images en trois dimensions
EP0693384A1 (fr) * 1994-07-21 1996-01-24 Brother Kogyo Kabushiki Kaisha Feuille capable d'expansion par la chaleur
US5639540A (en) * 1994-07-21 1997-06-17 Brother Kogyo Kabushiki Kaisha Thermal expansile sheet
GB2348509A (en) * 1998-11-18 2000-10-04 Eastman Kodak Co Dye-donor element with a transferable protection overcoat
EP1293357A1 (fr) * 2001-09-12 2003-03-19 Dai Nippon Printing Co., Ltd. Feuille pour transfert thermique procédé pour sa fabrication, et méthode pour former des images utilisant cette feuille
US6819348B2 (en) 2001-09-12 2004-11-16 Dai Nippon Printing Co., Ltd. Thermal transfer film, process for producing the same and method for image formation using said thermal transfer film
EP1683826A2 (fr) 2005-01-25 2006-07-26 Hansgeorg Neubig Procédé de fabrication d'une structure en relief tridimensionnel sur la surface d'un support, composite stratifié pour la préparation d'un tel procédé et utilisation d'une structure en relief préparée au moyen de ce procédé
EP1683826A3 (fr) * 2005-01-25 2009-01-28 Hansgeorg Neubig Procédé de fabrication d'une structure en relief tridimensionnel sur la surface d'un support, composite stratifié pour la préparation d'un tel procédé et utilisation d'une structure en relief préparée au moyen de ce procédé

Also Published As

Publication number Publication date
EP0034376A3 (en) 1982-08-04
JPS56115294A (en) 1981-09-10
DE3168093D1 (en) 1985-02-21
JPH0134799B2 (fr) 1989-07-20
EP0034376B1 (fr) 1985-01-09

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