EP0002546A2 - Verbessertes lichtempfindliches Aufzeichnungsmaterial und Verfahren zur Aufzeichnung von Informationen durch Belichtung dieses Materials mit aktivierenden ultra-violett und/oder sichtbaren Licht das gemäss diesen Informationen moduliert ist - Google Patents

Verbessertes lichtempfindliches Aufzeichnungsmaterial und Verfahren zur Aufzeichnung von Informationen durch Belichtung dieses Materials mit aktivierenden ultra-violett und/oder sichtbaren Licht das gemäss diesen Informationen moduliert ist Download PDF

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Publication number
EP0002546A2
EP0002546A2 EP78200330A EP78200330A EP0002546A2 EP 0002546 A2 EP0002546 A2 EP 0002546A2 EP 78200330 A EP78200330 A EP 78200330A EP 78200330 A EP78200330 A EP 78200330A EP 0002546 A2 EP0002546 A2 EP 0002546A2
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EP
European Patent Office
Prior art keywords
tellurium
sheet
recording
material according
hydrogen
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
EP78200330A
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English (en)
French (fr)
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EP0002546B1 (de
EP0002546A3 (en
Inventor
Frans Clement Heugebaert
Wilhelmus Janssens
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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Publication of EP0002546A2 publication Critical patent/EP0002546A2/de
Publication of EP0002546A3 publication Critical patent/EP0002546A3/xx
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Publication of EP0002546B1 publication Critical patent/EP0002546B1/de
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    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C1/00—Photosensitive materials
    • G03C1/72—Photosensitive compositions not covered by the groups G03C1/005 - G03C1/705
    • G03C1/73—Photosensitive compositions not covered by the groups G03C1/005 - G03C1/705 containing organic compounds
    • G03C1/734—Tellurium or selenium compounds

Definitions

  • the present invention relates to improved photosensitive recording material and a method of recording information by exposure of said material to information-wise modulated activating electro-magnetic radiation.
  • a disadvantage associated with recording materials containing these compounds is their rather low photosensitivity.
  • a recording material which contains on a support a recording layer containing in admixture in a binder medium :
  • actinic radiation is understood here electro- magnetic radiation e.g. ultraviolet radiation and/or visible light to which the recording layer is sensitive for the image formation.
  • blocking layer includes here a single layer as well as P plurality of said layers.
  • the gas or vapour impermeability of said layer or sheet is preferably such that when the recording layer of the control material A-0 described in the present Example 1 is coated with said layer or sheet the described image-wise exposure and thermal processing of the coated material yields tellurium images of which the image in the coated material has a maximum optical density (D) at least 0.2 higher than the corresponding maximum optical density of a tellurium image formed under identical exposure and processing conditions in an identical material but not coated with said layer or sheet.
  • D maximum optical density
  • a blocking layer or sheet may be produced from polymeric materials, which include natural, modified natural, and synthetic resins.
  • polymeric materials which include natural, modified natural, and synthetic resins.
  • examples are cellulose esters such as cellulose triacetate, cellulose acetate propionate, cellulose acetate butyrate, polystyrene, polyvinyl acetate, polyvinyl chloride, silicone resins, poly(acrylic ester) and poly(methacrylic ester) resins and fluorinated hydrocarbon resins, and mixtures of the foregoing materials.
  • polystyrene resin examples include : pol(isobutyl methacrylate), poly(n-butyl methacrylate), poly(isobutyl methacrylate), copolymers of vinylidene fluoride and trifluorochloroethylene, a poly-vinyl-n-butyral, a copoly(vinyl acetate/vinyl choride), a copoly(acrylonitrile/butadiene/styrene), a copoly(vinyl chloride/vinyl acetate/vinyl alcohol) and poly(N-methoxymethyl acrylamide).
  • polymers produced by addition polymerization of unsaturated monomers likewise polymers prepared by polyaddition, e.g. polyurethanes or polycondensation, e.g. polyamides and pclyester resins, may be used for preparing a useful blocking layer or sheet for the recording material of the present invention.
  • polyaddition e.g. polyurethanes or polycondensation, e.g. polyamides and pclyester resins
  • polyamides and pclyester resins may be used for preparing a useful blocking layer or sheet for the recording material of the present invention.
  • a blocking layer of the recording material according to the presert invention is made of a cross-linked polymer mass obtained by an acid-catalyzed reaction of a polymer or mixture of polymers containing reactive hydrogen atoms e.g. forming part of one or more groups of the class consisting of free hydroxyl groups, -NHCO-0- groups, and -COOH groups, and an organic compound containing a plurality of etherified N-methylol groups, preferably -N-CH 2 0CH 3 groups as cross-linking agent.
  • a polymer containing reactive hydrogen atomsforming part of free hydroxyl groups and appropriate for acid-catalyzed cross-linking with compounds containing etherified N-methylol groups is, e.g., a polyester comprising free hydroxyl groups, a polyvinyl acetal in which part of the hydroxyl groups of the polyvinyl alcohol starting product has not been acetalized, a copolymer of vinyl alcohol and vinyl chloride, or a copolymer of vinyl chloride, vinyl acetate and vinyl alcohol.
  • a preferably used polymer containing free hydroxyl groups is a polyvinyl butyral with from 80 to 90 % by weight of vinyl butyral units, 7 to 20 % by weight of vinyl alcohol units and 0 to 3 % by weight of vinyl ester units, e.g. vinyl acetate units .
  • the molecular weight of the polyvinyl butyral may be within a broad range but is preferably between 45,000 and 55,000 Polyvinyl butyrals characterized by an intrinsic viscosity of 0.75 to 1.25 dl.g -1 determined in ethanol at 20°C are particularly useful.
  • Polymers containing reactive hydrogen atoms forming part of -NH-CO-0- groups and appropriate for acid-catalyzed cross-linking with compounds containing etherified N-methylol groups are polyurethane polymers e.g. as described in United States Patent Specification. 3,743,833.
  • An example of a useful polyurethane polymer that is commercially available is sold under the trade-name ESTANE 5707 F-1 (ESTANE is a Trademark of the B.F.Goodrich Chemical Company, Cleveland, Ohio, USA, for a polyurethane resin).
  • crosslinking agents containing a plurality of etherified N-methylol groups are derived from reaction products of formaldehyde with urea or with melamine.
  • a particularly useful crosslinking compound for use in combination with said polyvinyl butyral is hexakis(methoxymethyl)-melamine corresponding to the following structural formula :
  • Such compound is commercially available under the trade name CYMEL 300 of American Cyanamid Company, New York, USA.
  • the reaction proceeds preferably at elevated temperature.
  • a preferred cross-linking temperature also called curing temperature is in the range cf 80 to 160°C.
  • the amount of cross-linking agent with respect to said cross-linkable polymer(s) is preferably in the range of 5 to 20 % by weight.
  • catalyst strong acids such as hydrochloric acid, phosphoric acid, monobutyl phosphate, polystyrene sulphonic acid and p-toluene sulphonic acid.
  • p-toluene sulphonic acid is used, which is an acid that is soluble in an organic solvent such as ethanol in which the cross-linkable polymer e.g. the polyvinyl butyral can be dissolved.
  • the amount of acid catalyst with respect to cross-linkable polymer is preferably in the range of 0.2 to 4 % by weight. Since, as is apparent from the reaction scheme hereinbefore hydrochloric acid is formed during thermal development it is possible to effect cross-linking in situ during thermal development.
  • the thickness in dry state of the blocking means in the form of a coating on the recording layer is preferably at least 5 ⁇ m e.g. in the range of 5 to 200 ⁇ m.
  • the blocking coating will generally be an outermost coating.
  • recording materials wherein such coating is itself overcoated are not excluded from the scope of the invention.
  • the blocking coating may be applied from a polymer solution or dispersion, e.g. a latex which after drying and evaporation of th E solvent or liquid dispersing medium leaves a continuous polymer layer. Care should be taken to apply the polymer solution or dispersion from a liquid medium that does not dissolve or does not give rise to swelling of the binder of the recording layer.
  • a suitable blocking coating may likewise be applied in the form of a sheet by lamination.
  • An adhesive layer is normally used to more firmly bind such coating to the recording layer. Adhesives and compositions for producing protective laminates are described, e.g. in the United States Patent Specification 3,154,719 of Herbert Bauer, issued January 5, 1965.
  • Blocking sheets applied by means of an adhesive and that are useful for the purpose of the present invention may have a thickness in the range of 50 to 200 ⁇ m.
  • a layer of polymerisable monomers is applied and allowed to polymerize in situ on the recording layer.
  • a monomer suited for forming a blocking layer in that way is acrylamide.
  • Reducible organo-tellurium compounds (1) that are particularly suitable for use in a recording material of the present invention correspond to the following general formula : wherein :
  • a preferred class of imaging agents are organo-tellurium compounds corresponding to the following general formula: wherein :
  • photoreductant (2) Any compound that obtains reducing power with respect to said tellurium compound through photo-induced hydrogen abstraction from a hydrogen-donating compound (3) can be used as photoreductant (2).
  • Photoreductants (2) preferred for use according to the present invention are aromatic diketones and especially 1,2- and 1,4-benzoquinones with at least one fused-on carbocyclic aromatic ring.
  • photoreductants that are sensitive in the range up to about 400 nm and, therefore, are useful only in the ultraviolet range : benzophenone; acetophenone; 1,5-diphenyl-1,3,5-pentanetrione: ninhydrin; 4,4'-dibromobenzophenone; 2-t-butylanthraquinone and 1,8-dichloroanthraquinone.
  • the hydrogen-donating compound (3) is any conventional source of labile hydrogen as described e.g. in the United States Patent Specification 3,881,930. Herein especially hydrogen-donating compounds are described, which have a hydrogen atom bonded to a carbon atom to which is also bonded the oxygen atom of a hydroxy group and/or the trivalent nitrogen atom of an amine substituent.
  • Preferred hydrogen-donating compounds (3), from which hydrogen can be abstracted by said photo-exposed photo- reductant correspond to the following general formula : wherein:
  • a particularly suitable hydrogen- donating compound is phenyl-1,2-ethanediol (compound 2 of table 2).
  • an organic reducing agent precursor may be used, which according to the No.P 2802666 increase the recording material.
  • an acid e.g. HC1 formed in the imaging reaction
  • a reductor is set free image-wise, whereby image-wise reduction of the organo-tellurium compound takes place.
  • an acid sensitive organic reducing agent precursor it is not recommended to use simultaneously a covering layer that contains non- differentially an acid for effecting overall curing or crosslinking cf that layer since some of that acid could reach the recording layer and set free the reductor all over the recording layer and reduce the tellurium compound in a non-differential way giving rise to background fog.
  • a class of organic reducing agent precursors, from which by the action of an acid a reducing agent for said organo-tellurium compound can be set free includes para- end ortho-dihydroxy aryl compounds of which at least one of the hydroxyl groups has been esterified and of which the remaining hydroxyl group (if any) may have been etherified. By acid-catalyzed hydrolysis the hydroxyl group can be obtained in free state again so that the compound involved regains its reducing properties.
  • Another class of acid-sensitive organic reducing agent precursors is derived from pyrazolidin-3-one re- ductors, in which the active hydrogen atom in 2-position is temporarily blocked e.g. by reaction with an isocyanate or an acid halide.
  • Particularly suitable binders for use in recording layers of the present invention are organic polymeric materials.
  • cyano-ethylated starches celluloses and amyloses having a degree of substitution of cyano-ethylation of at least 2
  • polyvinylbenzophenone polyvinylidene chloride
  • polyethylene terephthalate cellulose-esters and ethers such as cellulose acetate, cellulose propionate, cellulose butyrate, methylcellulose, ethylcellulose, hydroxypropylcellulose, polyvinylcarbazole, polyvinyl chloride
  • polyvinyl methyl ketone polyvinyl alcohol, polyvinylpyrrolidone, polyvinyl methyl ether, polyacrylic and polymethacrylic alkyl esters such as polymethyl methacrylate and polyethyl methacrylate
  • copolymer of polyvinyl methyl ether and maleic anhydride various grades of polyvinyl formal resins such as so- called 12/85, 6/95 E, 15/95 S, 15/95
  • polyvinyl formal 15/95 E which is a white, free-flowing powder having a molecular weight in the range of 24,000 - 40,000 and a formal content expressed as % polyvinyl formal of approximately 82 %, possessing high thermal stability, and excellent mechanical durability.
  • a dry photographic coating containing the above- mentioned ingredients can be formed by dissolving the binding agent or mixture of binding agents in a suitable inert solvent, which acts as dispersing or dissolving medium for the other ingredients and which is removed from the coating composition by evaporation so that a solid photographic recording layer on a properly chosen support is left.
  • the supports may be of any kind encountered in silver halide photographic materials, e.g. paper and resin film.
  • the photoreductant is used in the recording material in an amount which is preferably at least equimolar with respect to the organo-tellurium compound.
  • the coverage of the organo-tellurium compound is preferably in the range of 1 to 10 g per sq.m.
  • the amount t of acid-sensitive reducing agent precursor is not critical. Large improvements in sensitivity are obtained with amounts between 50 to 100 % by weight with respect to the organo-tellurium compound.
  • the present invention includes a recording method in which the above defined recording material is used. Said method includes the steps of information wise exposing said material to activating electromagnet radiation to which the photo-reductant is sesitive and overall to develop a tellurium image in the recording material
  • An information-wise ultraviolet exposure is normally used in combination with an aromatic diketone as photo- reductant.
  • the heat-development preferably proceeds in the temperature range of 80°C to 200°C and in general lasts approximately 30 s to 300 s depending on the temperature
  • the heat required to produce the tellurium metal image can be supplied in various ways. So, the recording material can be developed by heat transport from hot bodies e.g. plates or rollers or by contact with a warm gas stream e.g. hot air. Furthermore, the metal image can be formed by means of infrared radiation.
  • the solution obtained was mixed with 240 g cf a 20 % solution in methyl ethyl ketone of VINYLITE VAGH (trade name of Union Carbide and Carbon for a copoly(vinyl chloride/vinyl acetate/vinyl alcohol) (91/3/6)) and 1 ml of 2 % of silicone oil in methylene chloride as coating aid.
  • VINYLITE VAGH trade name of Union Carbide and Carbon for a copoly(vinyl chloride/vinyl acetate/vinyl alcohol) (91/3/6)
  • the resulting coating composition was applied by dip-coating to a polyethylene terephthalate film support at a coverage of 2 g per sq.m of said organo-tellurium compound.
  • the coating was dried at 40°C with ventilation for 8 h.
  • the obtained photosensitive recording material A-0 was exposed for 10 s through a step wedge with constant 0.3 in the "SPEKTRAPROOF" (trade name) exposure apparatus of Siegfried Theimer GmbH, 6481 Obersatzbach, W.Germany, equipped with a 2000 W lamp emitting with a maximum at about 350 nm.
  • SPEKTRAPROOF trade name
  • the exposed material was developed by overall heating for 5 min at 160°C
  • recording material A-1 was the same as described for the control material A-0 except that the recording layer was overcoated with a 10 % solution in methanol of poly(N-methoxymethylacrylamide) at a dry weight coverage of 4.4 g per sq.m.
  • material A-1 with blocking layer according t the present invention is more than 100 times as sensitive an the control material A-O .
  • the obtained solution was mixed with 60g of a 20 % solution of VINYLITE VAGH (trade name) in methyl ethyl ketone and 1 ml of a 2 % solution in methylene chloride of silicone cil.
  • the coating solution was applied by dip-coating to a polyethylene terephthalate support at a coverage of 2.5 g per so.m of said organo-tellurium compound. Drying proceeded as described for control material A-0 of Example 1.
  • the obtained photosensitive recording material was exposed for 100 s through a stepwedge with constant 0.3 in the already mentioned SPEKTRAPROOF (trade name) apparatus.
  • EIKONIX is a trade name of EIKONIX Corporation, Burlington, Mass., U.S.A.).
  • recording material B-1 was the same as described for material B-0 except that a pressure-sensitive adhesive cellophane (trade name) tape was adhered to the recording layer.
  • recording material B-2 was the same as described for material B-0 except that a poly- ethyleneterephthalate sheet of a thickness of 0.1mm by means of a drop of silicone oil was adhered to the recording layer.
  • the obtained solution was mixed with 300 g of a 28 % solution of VINYLITE VAGH (trade name) in methyl ethyl ketone and 1 ml of 2 % of silicone oil in methylene chloride.
  • the resulting coating composition was applied by dipcoating to a polyethylene terephthalate film support at a coverage of 2.7 g per sq.m cf said organo-tellurium compound.
  • the coating was dried with ventilation at 40°C for 8 h.
  • the obtained photosensitive recording material was exposed for 10 s through a step wedge with a constant 0.3 in the SPEETRAPROOF (trade name) exposure apparatus.
  • the exposed material was developed by overall heating at 150°C in a drying stove for 5 min.
  • the preparation of recording material C-1 was the same as described for material C-0 except that the recording layer was overcoated with a solution of 8.5 g of BUTVAR of BUTVAR B 76 300 and 0.05 g of silicons in 100 BUTVAR is a tradename of Shawinigan Products Com . , New York U.S.A. for a polymer Shawinigan Products Com . , New York, of vinyl n-butyral having a molecular weight in the range of 45,000 to 55,000 and a vinyl alcohol unit content of 13 %.
  • CYMEL 300 is a trade name of American Cyanamid Company, New York, U.S.A. for hexakis (methoxymethyl)-melamine.
  • the coating was effected at a coverage of 20 g per sq.m for the vinyl-n-butyral polymer.
  • the exposed material C-1 was developed by overall heatine at 160°C in a drying stove for 5 min.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
EP19780200330 1977-12-21 1978-12-01 Verbessertes lichtempfindliches Aufzeichnungsmaterial und Verfahren zur Aufzeichnung von Informationen durch Belichtung dieses Materials mit aktivierenden ultra-violett und/oder sichtbaren Licht das gemäss diesen Informationen moduliert ist Expired EP0002546B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB5327277 1977-12-21
GB5327277 1977-12-21

Publications (3)

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EP0002546A2 true EP0002546A2 (de) 1979-06-27
EP0002546A3 EP0002546A3 (en) 1979-07-11
EP0002546B1 EP0002546B1 (de) 1981-07-08

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EP (1) EP0002546B1 (de)
JP (1) JPS5499620A (de)
DE (1) DE2860828D1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2465250A1 (fr) * 1979-09-10 1981-03-20 Energy Conversion Devices Inc Composition a base de tellure, permettant de former des images, procede pour son obtention et pellicule en faisant application

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0538616U (ja) * 1991-10-30 1993-05-25 株式会社富士通ゼネラル レンズ固定構造

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2159287A1 (de) * 1971-11-08 1973-06-22 Agfa Gevaert
FR2183899A1 (de) * 1972-05-09 1973-12-21 Fuji Photo Film Co Ltd
DE2436132A1 (de) * 1973-07-30 1975-02-13 Energy Conversion Devices Inc Verfahren und aufzeichnungstraeger fuer die aufzeichnung von abbildungen bzw. nachrichten
FR2242744A1 (de) * 1973-08-29 1975-03-28 Matsushita Electric Ind Co Ltd
FR2285637A1 (fr) * 1974-09-18 1976-04-16 Energy Conversion Devices Inc Pellicule formatrice d'images a traitement sec et procede pour sa mise en oeuvre
DE2719023A1 (de) * 1976-05-24 1977-12-15 Agfa Gevaert Ag Photographisches aufnahmematerial mit einem photoreduktionsmittel und einem wasserstoffdonator

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2159287A1 (de) * 1971-11-08 1973-06-22 Agfa Gevaert
FR2183899A1 (de) * 1972-05-09 1973-12-21 Fuji Photo Film Co Ltd
DE2436132A1 (de) * 1973-07-30 1975-02-13 Energy Conversion Devices Inc Verfahren und aufzeichnungstraeger fuer die aufzeichnung von abbildungen bzw. nachrichten
FR2242744A1 (de) * 1973-08-29 1975-03-28 Matsushita Electric Ind Co Ltd
FR2285637A1 (fr) * 1974-09-18 1976-04-16 Energy Conversion Devices Inc Pellicule formatrice d'images a traitement sec et procede pour sa mise en oeuvre
DE2719023A1 (de) * 1976-05-24 1977-12-15 Agfa Gevaert Ag Photographisches aufnahmematerial mit einem photoreduktionsmittel und einem wasserstoffdonator
FR2353082A1 (fr) * 1976-05-24 1977-12-23 Agfa Gevaert Elements d'enregistrement photographique

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2465250A1 (fr) * 1979-09-10 1981-03-20 Energy Conversion Devices Inc Composition a base de tellure, permettant de former des images, procede pour son obtention et pellicule en faisant application

Also Published As

Publication number Publication date
JPS5499620A (en) 1979-08-06
JPS6228458B2 (de) 1987-06-20
EP0002546B1 (de) 1981-07-08
DE2860828D1 (en) 1981-10-15
EP0002546A3 (en) 1979-07-11

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