EP0034376B1 - Thermosensitive stereo recording method - Google Patents

Thermosensitive stereo recording method Download PDF

Info

Publication number
EP0034376B1
EP0034376B1 EP19810101180 EP81101180A EP0034376B1 EP 0034376 B1 EP0034376 B1 EP 0034376B1 EP 19810101180 EP19810101180 EP 19810101180 EP 81101180 A EP81101180 A EP 81101180A EP 0034376 B1 EP0034376 B1 EP 0034376B1
Authority
EP
European Patent Office
Prior art keywords
thermo
recording
ink coating
thermosensitive
expandable
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
EP19810101180
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0034376A3 (en
EP0034376A2 (en
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
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 filed Critical Mitsubishi Paper Mills Ltd
Publication of EP0034376A2 publication Critical patent/EP0034376A2/en
Publication of EP0034376A3 publication Critical patent/EP0034376A3/en
Application granted granted Critical
Publication of EP0034376B1 publication Critical patent/EP0034376B1/en
Expired legal-status Critical Current

Links

Images

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

  • thermo-sensitive 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.
  • 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.
  • 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.
  • German Auslegeschrift DE-B-1 1 22 555 discloses a stereo recording method utilising a solid puffing agent layer which chemically decomposes at elevated temperatures to yield a gas or sublimes to yield a gas.
  • the puffing effect which can thereby be produced is however relatively small.
  • thermosensitive stereo recording method in which selected regions of a thermosensitive stereo recording surface prepared by coating a support with thermo-expandable material are provided with an ink coating which has a greater tendency to absorb radiant heat than have uncoated portions of said surface, and said surface is exposed to radiant heat in order to cause differential expansion of said surface to generate a concavo-convex image, characterised in that said thermo-expandable material is principally composed of thermo-expandable microspheres obtained by encapsulating a volatile low boiling point fluid with a thermoplastic material and in that said ink coating is selectively applied by forming a thermo-recording medium from a thermoplastic ink coating on a substrate, attaching said ink coating to said thermo-expandable material, transferring selected portions of said ink coating to said thermo-expandable material by a thermal recording device, and stripping off said thermo-recording medium.
  • thermosensitive stereo recording method according to this invention is described hereinbelow with reference to the accompanying drawings.
  • Figure 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 are adjacent each other.
  • Figure 2 shows a condition where while maintaining said thermo- sensitive stereo recording material and said thermo-recording medium in said contacted state, or if necessary, after they had been further press-bonded integral to each other by a press roll device such as a calendar or laminator, portions 5 of the thermoplastic ink coating layer 3 have been selectively 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 the rear side thereof by a thermal recording head 6 of a thermosensitive recording facsimile or other like device.
  • a press roll device such as a calendar or laminator
  • Figure 3 shows a condition in which said thermo-recording medium is being separated away from said thermosensitive stereo recording material
  • Figure 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 portions 9 by dint of difference in heat 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 under the tradenames of Saran Microspheres (Dow Chemical), Micropearl (Matsumoto Yushi Seiyaku), etc.
  • a heat-expandable microspere 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.
  • 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
  • thermosensitive stereo recording material (A) Preparation of thermosensitive stereo recording material
  • thermo-sensitive 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 thermo-sensitive 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 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 thermo- sensitive recording facsimile and a simple exposure means.

Landscapes

  • 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)
  • Heat Sensitive Colour Forming Recording (AREA)
  • Electronic Switches (AREA)
EP19810101180 1980-02-19 1981-02-19 Thermosensitive stereo recording method Expired EP0034376B1 (en)

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

Family

ID=11998646

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19810101180 Expired EP0034376B1 (en) 1980-02-19 1981-02-19 Thermosensitive stereo recording method

Country Status (3)

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

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6360392U (enrdf_load_stackoverflow) * 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
EP0376322A3 (en) * 1988-12-29 1991-07-17 Minolta Camera Kabushiki Kaisha Three-dimensional image forming method
JPH0825785A (ja) * 1994-07-21 1996-01-30 Brother Ind Ltd 立体画像形成用シート
JPH08216511A (ja) * 1995-02-15 1996-08-27 Brother Ind Ltd 立体画像形成用シート
DE19954064A1 (de) * 1998-11-18 2000-05-25 Eastman Kodak Co Farbstoff-Donorelement mit einer übertragbaren schützenden Deckschicht
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
DE102005003413A1 (de) 2005-01-25 2006-07-27 Hansgeorg Neubig Herstellung von Schriften und Zeichnungen mittels microverkapseltem 2-Komponenten Kunststoffschaum z.B. PU (Polyurethan) PS (Polystrol)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK117714B (da) * 1958-01-13 1970-05-25 Minnesota Mining & Mfg Fremgangsmåde til tilretning ved bogtryk.
JPS5040667B2 (enrdf_load_stackoverflow) * 1971-10-20 1975-12-25
US3779761A (en) * 1972-01-17 1973-12-18 Minnesota Mining & Mfg Presensitized light-sensitive letterpress printing makeready
JPS5544717B2 (enrdf_load_stackoverflow) * 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

Also Published As

Publication number Publication date
EP0034376A3 (en) 1982-08-04
DE3168093D1 (en) 1985-02-21
EP0034376A2 (en) 1981-08-26
JPS56115294A (en) 1981-09-10
JPH0134799B2 (enrdf_load_stackoverflow) 1989-07-20

Similar Documents

Publication Publication Date Title
US3983279A (en) Multiple heat-sensitive copying medium
US5876836A (en) Composite thermal transfer sheet
JPH06210966A (ja) レーザー誘導感熱色素転写用単色色素供与体素子
EP0790124B1 (en) Method for perforating heat-sensitive stencil sheet and stencil sheet and composition therefor
EP0034376B1 (en) Thermosensitive stereo recording method
US3592644A (en) Thermorecording and reproduction of graphic information
JPH0764126B2 (ja) 蛍光ユウロピウムコンプレックスを含む受容素子
US6077594A (en) Thermal transfer ribbon with self generating silicone resin backcoat
EP0893274A1 (en) Thermal transfer image-receiving sheet with a barrier layer
US4330785A (en) Thermal recording method
US5409758A (en) Thermal image transfer recording medium
JP2763720B2 (ja) レーザー誘導感熱色素転写に用いる色素供与体または色素受容体素子に対するスペーサービーズの付着性を増大させる方法
US5376432A (en) Thermal transfer sheet
US6326330B1 (en) Thermo-sensitive printing sheet comprising a back coating containing starch, an acrylate copolymer and an alkaline catalyst
US5952107A (en) Backcoat for thermal transfer ribbons
US3697677A (en) Facsimile copying process
JPS59164187A (ja) 熱転写記録媒体
JPH0147316B2 (enrdf_load_stackoverflow)
JPS6184287A (ja) 転写型感熱記録媒体
JP2713568B2 (ja) 透明記録用フイルム
JP2008230095A (ja) 画像形成方法と画像形成装置および画像形成システム
JPS61139489A (ja) 熱転写記録媒体
JPH0150600B2 (enrdf_load_stackoverflow)
JP2768468B2 (ja) 溶融型熱転写インク画像受容シート
JP2566449B2 (ja) 感熱転写記録用受像紙

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): DE FR GB SE

17P Request for examination filed

Effective date: 19811022

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Designated state(s): DE FR GB SE

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Designated state(s): DE FR GB SE

REF Corresponds to:

Ref document number: 3168093

Country of ref document: DE

Date of ref document: 19850221

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19941215

Year of fee payment: 15

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19941219

Year of fee payment: 15

EAL Se: european patent in force in sweden

Ref document number: 81101180.8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19950209

Year of fee payment: 15

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19960219

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19960220

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19960318

Year of fee payment: 16

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19960219

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19961031

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19971101