EP0068907B1 - Aufzeichnungsmedien - Google Patents

Aufzeichnungsmedien Download PDF

Info

Publication number
EP0068907B1
EP0068907B1 EP82303489A EP82303489A EP0068907B1 EP 0068907 B1 EP0068907 B1 EP 0068907B1 EP 82303489 A EP82303489 A EP 82303489A EP 82303489 A EP82303489 A EP 82303489A EP 0068907 B1 EP0068907 B1 EP 0068907B1
Authority
EP
European Patent Office
Prior art keywords
denaturation
recording medium
recording layer
recording
thermally
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
EP82303489A
Other languages
English (en)
French (fr)
Other versions
EP0068907A1 (de
Inventor
Kashiwagi Takashi
Morino Kouji
Yamada Kosaku
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.)
Fujifilm Graphic Systems Co Ltd
Original Assignee
Fujifilm Graphic Systems Co Ltd
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 Fujifilm Graphic Systems Co Ltd filed Critical Fujifilm Graphic Systems Co Ltd
Publication of EP0068907A1 publication Critical patent/EP0068907A1/de
Application granted granted Critical
Publication of EP0068907B1 publication Critical patent/EP0068907B1/de
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
    • B41M5/36—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

  • This invention relates to a recording medium comprising as a recording component, a material which is obtained by physical denaturation of a thermally coagulatable proteinaceous compound.
  • thermal recording media which provide relief images by insolubilizing a recording layer by the application of a heat pattern, and removing the soluble areas of the recording layer.
  • These media, and processes using them are disclosed in U.S. Patent 4,115,613 (corresponding to Japanese Patent Publication No. 10870/79 and 36075/80 and Japanese Patent Application (OPI) No. 15817/80) and U.S. Patent 4288509 (corresponding to Japanese Patent Application (OPI) No. 15818/80 (the term "OPI” as used herein refers to a "published unexamined Japanese Patent Application").
  • thermosensitive recording medium comprising a chemically modified, thermally coagulatable proteinaceous compound
  • EP-A-0034502 published on 19-8-81 and belonging to the prior art according to Article 54 (3) on (4) for the designated states, BE, CH, DE, FR, GB and LI, said EP-A-0034052 corresponding to Japanese Patent Application (OPI) Nos. 15395/81 and 110931/80 and Japanese Patent Application No. 172643/80).
  • the recording media are characterized by the use of thermally coagulatable proteinaceous compounds or of a chemically modified thermally coagulatable proteinaceous compounds, without any denaturation.
  • the drying procedure must be controlled at a comparatively low temperature such that denaturation does not take place. Consequently, in such case, a lengthy drying chamber and an over-sized dehumidifier are inevitably required.
  • the properties of the resulting recording medium can be adversely affected by the temperature and/or humidity of atmosphere. Accordingly, in order to obtain a high quality image using such recording media, the temperature and humidity of the atmosphere must be strictly controlled.
  • thermosensitive recording media which contain a thermally coagulatable proteinaceous compound and/or a chemically modified, thermally coagulatable pro- , teinaceous compound
  • the image_recording is carried out using a thermal coagulation property of the proteinaceous compound, i.e. a thermal denaturation property. Accordingly, no denaturation should take place during the preparation of recording medium.
  • the inventors have now found that, in a recording medium comprising a recording layer containing as a recording component a material which is obtained by physical denaturation of a thermally coagulatable proteinaceous compound, the recording layer becomes non-removable from a support upon application of energy, e.g. light and heat.
  • a recording medium comprising a support having provided thereon a recording layer, characterized in that said recording layer contains at least one material which is obtained by physical denaturation of a thermally coagulatable proteinaceous compound.
  • a recording medium can be prepared at a low cost on an industrial scale, and the properties of this recording medium are not adversely affected by the temperature and/or humidity of atmosphere, so that a high-quality image stable over a long period of time of, e.g. several years, can be obtained with good reproducibility.
  • thermal denaturation In the preparation of the material which is obtained by physical denaturation of a theramally coagulatable proteinaceous compound, physical denaturation by thermal means (hereinafter called thermal denaturation) may be employed in combination with chemical denaturation, other physical denaturation and/or biological denaturation.
  • At least one chemical denaturation agent selected from the following groups may be used:
  • At least one biological means of application of microorganisms and enzymes may be employed, as taught for example in Chemical Review, vol 34, p. 165-166.
  • Chemical denaturation, physical denaturation and/or biological denaturation as described above may be applied as a first stage and followed by thermal denaturation.
  • additives such as surfactants, water-soluble polymers, dyes, antiseptic or mold-proofing agents
  • surfactants such as surfactants, water-soluble polymers, dyes, antiseptic or mold-proofing agents
  • At least one material which is obtained by physical denaturation of a thermally coagulatable proteinaceous compound may be emulsified and dispersed in a dispersing medium, such as a water, and coated on a support, followed by drying to form a recording layer.
  • a dispersing medium such as a water
  • a recording layer by coating a mixture of a material which is obtained by physical denaturatiuon of thermally coagulatable proteinaceous compound and (a) a thermally coagulatable proteinaceous compound and/or (b) a chemically modified, thermally coagulatable proteinaceous compound described in the foregoing references.
  • the material which is obtained by physical denaturation of a theramlly coagulatable proteinaceous compound can be present in an amount of at least 1 weight percent, and more preferably, at least 30 weight percent of the total weight.
  • isolated proteins such as albumin, hemoglobin, globulin, prolamin an glutelin
  • egg white and dry egg white each containing albumin as a major ingredient
  • blood powder contaning hemoglobin as a major ingredient
  • soybean protein containing globulin as a major ingredient such as dry soybean milk and concentrated soybean powder
  • wheat gluten containing prolamin and glutelin as major ingredients,
  • the recording layer of the recording medium of this invention may contain at least one heat- sensitizer as disclosed in U.S. Patent 4 115 613.
  • the recording layer of the recording medium of this invention may further contain fine particles of substances capable of absorbing light and converting it to heat, such as carbon black and graphite, as disclosed in U.S. Patent 4 115 613, or colouring materials, such as yellow, orange and red dye-pigments as disclosed in U.S. Patent 4 288 509.
  • the recording layer on the recording medium of this invention comprises a material which is obtained by physical denaturation of a light-sensitive, chemically modified, thermally coagulatable proteinaceous compound, it may contain a light-sensitizer.
  • Support which can be used for the recording layer include polymer film (e.g. of polyesters, cellulose triacetate, polystyrene, or polycarbonates) matted film such as polyester film whose surface is matted, sythetic paper, glass, and metal sheet (e.g. of aluminium or copper).
  • a subbing layer may be provided on the support to improve the adhesiveness of the support to the recording layer.
  • Recording using the recording medium of this invention is effected by the application of light and/or heat.
  • One or more light sources such as a carbon arc lamp, a metal halide lamp, and argon ion laser, a YAG laser, a xenon flash lamp, and a photographic flood lamp, can be used for "imagewise" exposure.
  • Methods of recording by the application of heat can be classified as external heating methods and internal heating methods.
  • external heating methods selective heating is achieved by bringing the recording layer into direct contact with heat or a heat pattern, or by receiving heat generated and accumulated by light-exposure in heat-absorbing areas of an original in accordance with a reflective light-exposure method.
  • the recording layer is then non-removable from the support after such heating.
  • Internal heating methods are mainly applied to a recording layer containing therein a light-heat conversion substance as disclosed in U.S Patent 4 115 613.
  • electromagnetic radiation rays are selectively applied onto the recording layer e.g. by exposing it to light through a mask.
  • the recording layer is thereafter non-removable from the support, due to the heat generated by the light-heat conversion substance.
  • unchanged areas are removed and changed areas form images.
  • a solvent such as water, dilute aqueous solution of an acid, dilute aqueous solution of an alkali, or an aqueous solution of neutral salt
  • shower development, spray development, dip development, or wipe development the changed areas i.e. the non-removable areas corresponding to the heat and/or light pattern
  • egg albumin (a product of Calibiochem-Behring Corp., La Jolla, California, distributed by Hoechst Japan Ltd) was dissolved in 90 g of water, and the solution was heated for 10 minutes to 70°C to obtain a white turbid solution.
  • the thus obtained turbid solution contained thermally denatured egg albumin.
  • soybean protein soybean acetone powder; a product of Sigma Chemical Co.
  • soybean protein soybean acetone powder; a product of Sigma Chemical Co.
  • the dispersion was heated at 89°C for 30 minutes.
  • a film, formed on the liquid surface was dried and pulverized by means of mortar, to obtain a fine powder of thermally denatured soybean protein.
  • the thus obtained recording layer was brought into intimate contact with a lith film original having a 150 line half tone pattern, exposed by use of a xenon flash light source (XENOFAX FX-150), made by Riso Kagaku Kogyo Co.; exposure time: 5 x 10- 3 sec.) and then developed by applying therein a shower of water having a pressure of 2.0 kg/cm to obtain a distinct positive image.
  • a xenon flash light source XENOFAX FX-150
  • the thus prepared recording medium was packed in an open paper bag lined with plastic film.
  • the paper bag was then placed in an incubator having a temperature of 40°C and a relative humidity of 80% for 72 hours. Thereafter, the recording medium was processed by the above described process to obtain thereby a distinct image.
  • the thus obtained recording layer was brought into intimate contact with a reflection original having a black line pattern, exposed by use of a xenon flash light source (exposure time: 5 x 10- 3 sec.) and then developed in the same manner as in Example 1 to obtain distinct positive image.
  • the white suspension or turbid solution obtained in Preparation Example 4 or 5 was used for the preparation of coating mixture.
  • the resulting recording layer was treated in the same manner as in Example 1, 2 or 3 to obtain the same results.
  • the red dispersion mixture obtained in Preparation Example 7 was coated on a 100um thick polymer film and dried in about 100°C hot air to a red recording layer.
  • the exposure and spray development were effected in the same manner as in Example 2, there was obtained a distinct red positive image.
  • a recording medium was formulated.
  • the recording medium was treated in the same manner as in Example 1. As the result, the treated recording layer gave a distinct image in an atmosphere of 20°C to 25°C and 50%RH to 60%RH.
  • the recording medium was treated in an atmosphere of 20°C and 15%RH (such as a room condition in the winter season). As the result, the recording layer did not give as distinct an image as that obtained in the atmosphere of 20°C and 50%RH because the sensitivity of the recording layer decreased.
  • the recording medium was treated in an atmosphere of 30°C and 80%RH (such as a room condition in rainy weather of the summer season). As the result, the recording layer did not give an image because the recording layer became non-removable in the non-image areas.
  • the recording medium was packed in an open paper bag lined with plastic film.
  • the paper bag was placed in an incubator having a temperature of 40°C and a relative humidity of 80%.
  • a critical term for obtaining a distinct image was 24 hours.

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Thermal Transfer Or Thermal Recording In General (AREA)
  • Peptides Or Proteins (AREA)

Claims (6)

1. Aufzeichnungsmedium, umfassend einen Träger mit einer darauf vogesehenen Aufzeichnungsshicht, dadurch gekennzeichnet, daß die Aufzeichnungsshicht mindestens ein Material enthält, das durch physikalische Denaturierung einer thermisch koagulierbaren, proteinhaltigen Verbindung erhalten wird.
2. Aufzeichnungsmedium nach Anspruch 1, dadurch gekennzeichnet, daß das Material durch thermische Denaturierung hergestellt worden ist.
3. Aufzeichnungsmedium nach Anspruch 1, dadurch gekennzeichnet, daß das Material durch thermische Denaturierung in Kombination mit mindestens einer anderen Denaturierung hergestellt worden ist.
4. Aufzeichnungsmedium nach Anspruch 1, dadurch gekennzeichnet, daß das Material durch thermische Denaturierung, anschließend an mindestens eine Denaturierung, gewählt aus physikalischer Denaturierung, chemischer Denaturierung und biologischer Denaturierung, hergestellt worden ist.
5. Aufzeichnungsmedium nach mindestens einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß das Material ein denaturiertes Globularprotein ist.
6. Aufzeichnungsmedium nach mindestens einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß das Material denaturiertes Albumin ist.
EP82303489A 1981-07-02 1982-07-02 Aufzeichnungsmedien Expired EP0068907B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP102301/81 1981-07-02
JP56102301A JPS585291A (ja) 1981-07-02 1981-07-02 記録材料

Publications (2)

Publication Number Publication Date
EP0068907A1 EP0068907A1 (de) 1983-01-05
EP0068907B1 true EP0068907B1 (de) 1987-03-25

Family

ID=14323781

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82303489A Expired EP0068907B1 (de) 1981-07-02 1982-07-02 Aufzeichnungsmedien

Country Status (4)

Country Link
EP (1) EP0068907B1 (de)
JP (1) JPS585291A (de)
AU (1) AU548285B2 (de)
DE (1) DE3275823D1 (de)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0034052A2 (de) * 1980-02-07 1981-08-19 Process Shizai Co. Ltd. Aufzeichnungsmedium

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5935360B2 (ja) * 1978-07-21 1984-08-28 プロセス資材株式会社 記録材料

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0034052A2 (de) * 1980-02-07 1981-08-19 Process Shizai Co. Ltd. Aufzeichnungsmedium

Also Published As

Publication number Publication date
JPH0118878B2 (de) 1989-04-07
AU8554882A (en) 1983-01-06
JPS585291A (ja) 1983-01-12
AU548285B2 (en) 1985-12-05
DE3275823D1 (en) 1987-04-30
EP0068907A1 (de) 1983-01-05

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