NO774516L - WATER-PRODUCABLE LITHOGRAPHIC PRINTING PLATE - Google Patents
WATER-PRODUCABLE LITHOGRAPHIC PRINTING PLATEInfo
- Publication number
- NO774516L NO774516L NO77774516A NO774516A NO774516L NO 774516 L NO774516 L NO 774516L NO 77774516 A NO77774516 A NO 77774516A NO 774516 A NO774516 A NO 774516A NO 774516 L NO774516 L NO 774516L
- Authority
- NO
- Norway
- Prior art keywords
- water
- printing plate
- resin
- group
- approx
- Prior art date
Links
- 238000007639 printing Methods 0.000 title claims description 40
- 229920005989 resin Polymers 0.000 claims description 40
- 239000011347 resin Substances 0.000 claims description 40
- 239000000203 mixture Substances 0.000 claims description 37
- 239000000758 substrate Substances 0.000 claims description 30
- 239000011248 coating agent Substances 0.000 claims description 27
- 238000000576 coating method Methods 0.000 claims description 27
- 239000003504 photosensitizing agent Substances 0.000 claims description 24
- 238000000034 method Methods 0.000 claims description 18
- 239000010410 layer Substances 0.000 claims description 13
- 229910052782 aluminium Inorganic materials 0.000 claims description 12
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 12
- 239000000126 substance Substances 0.000 claims description 11
- -1 alkali metal salts Chemical class 0.000 claims description 10
- 229910052751 metal Inorganic materials 0.000 claims description 10
- 239000002184 metal Substances 0.000 claims description 10
- 230000005855 radiation Effects 0.000 claims description 8
- 239000002253 acid Substances 0.000 claims description 6
- 239000003822 epoxy resin Substances 0.000 claims description 6
- 229920000647 polyepoxide Polymers 0.000 claims description 6
- 150000001875 compounds Chemical class 0.000 claims description 5
- 239000004814 polyurethane Substances 0.000 claims description 5
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 5
- 235000019422 polyvinyl alcohol Nutrition 0.000 claims description 5
- BMNGOGRNWBJJKB-UHFFFAOYSA-N 1-azidopyrene Chemical class C1=C2C(N=[N+]=[N-])=CC=C(C=C3)C2=C2C3=CC=CC2=C1 BMNGOGRNWBJJKB-UHFFFAOYSA-N 0.000 claims description 4
- 229920002635 polyurethane Polymers 0.000 claims description 4
- 229920000036 polyvinylpyrrolidone Polymers 0.000 claims description 4
- 239000001267 polyvinylpyrrolidone Substances 0.000 claims description 4
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 claims description 4
- 229920003171 Poly (ethylene oxide) Polymers 0.000 claims description 3
- 229920002125 Sokalan® Polymers 0.000 claims description 3
- 150000007513 acids Chemical class 0.000 claims description 3
- 239000003513 alkali Substances 0.000 claims description 3
- 229910052783 alkali metal Inorganic materials 0.000 claims description 3
- 229910052910 alkali metal silicate Inorganic materials 0.000 claims description 3
- 229920001577 copolymer Polymers 0.000 claims description 3
- 150000002222 fluorine compounds Chemical class 0.000 claims description 3
- 239000011229 interlayer Substances 0.000 claims description 3
- 150000002739 metals Chemical class 0.000 claims description 3
- XNGIFLGASWRNHJ-UHFFFAOYSA-M phthalate(1-) Chemical compound OC(=O)C1=CC=CC=C1C([O-])=O XNGIFLGASWRNHJ-UHFFFAOYSA-M 0.000 claims description 3
- 229920002401 polyacrylamide Polymers 0.000 claims description 3
- 229920000728 polyester Polymers 0.000 claims description 3
- 229920006324 polyoxymethylene Polymers 0.000 claims description 3
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 claims description 3
- 235000012239 silicon dioxide Nutrition 0.000 claims description 3
- 229920002554 vinyl polymer Polymers 0.000 claims description 3
- OMQSJNWFFJOIMO-UHFFFAOYSA-J zirconium tetrafluoride Chemical class F[Zr](F)(F)F OMQSJNWFFJOIMO-UHFFFAOYSA-J 0.000 claims description 3
- 125000003118 aryl group Chemical group 0.000 claims description 2
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 claims description 2
- 229920001206 natural gum Polymers 0.000 claims description 2
- ZTQSAGDEMFDKMZ-UHFFFAOYSA-N Butyraldehyde Chemical compound CCCC=O ZTQSAGDEMFDKMZ-UHFFFAOYSA-N 0.000 claims 3
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 claims 2
- 125000004063 butyryl group Chemical group O=C([*])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 claims 2
- 239000004584 polyacrylic acid Substances 0.000 claims 2
- 244000043261 Hevea brasiliensis Species 0.000 claims 1
- 150000001299 aldehydes Chemical class 0.000 claims 1
- 239000004411 aluminium Substances 0.000 claims 1
- 239000006260 foam Substances 0.000 claims 1
- 229920003052 natural elastomer Polymers 0.000 claims 1
- 229920001194 natural rubber Polymers 0.000 claims 1
- 229920003051 synthetic elastomer Polymers 0.000 claims 1
- 239000005061 synthetic rubber Substances 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 15
- 239000008399 tap water Substances 0.000 description 9
- 235000020679 tap water Nutrition 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 7
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 6
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 6
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 6
- 239000000243 solution Substances 0.000 description 5
- 239000002904 solvent Substances 0.000 description 5
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 4
- 239000002966 varnish Substances 0.000 description 4
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- 239000004115 Sodium Silicate Substances 0.000 description 3
- 238000007743 anodising Methods 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 3
- 229910052911 sodium silicate Inorganic materials 0.000 description 3
- XNWFRZJHXBZDAG-UHFFFAOYSA-N 2-METHOXYETHANOL Chemical compound COCCO XNWFRZJHXBZDAG-UHFFFAOYSA-N 0.000 description 2
- MHOFGBJTSNWTDT-UHFFFAOYSA-M 2-[n-ethyl-4-[(6-methoxy-3-methyl-1,3-benzothiazol-3-ium-2-yl)diazenyl]anilino]ethanol;methyl sulfate Chemical compound COS([O-])(=O)=O.C1=CC(N(CCO)CC)=CC=C1N=NC1=[N+](C)C2=CC=C(OC)C=C2S1 MHOFGBJTSNWTDT-UHFFFAOYSA-M 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 2
- 229920000663 Hydroxyethyl cellulose Polymers 0.000 description 2
- 239000004354 Hydroxyethyl cellulose Substances 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- 239000004372 Polyvinyl alcohol Substances 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 239000001045 blue dye Substances 0.000 description 2
- 150000008049 diazo compounds Chemical class 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 235000019447 hydroxyethyl cellulose Nutrition 0.000 description 2
- STZCRXQWRGQSJD-GEEYTBSJSA-M methyl orange Chemical compound [Na+].C1=CC(N(C)C)=CC=C1\N=N\C1=CC=C(S([O-])(=O)=O)C=C1 STZCRXQWRGQSJD-GEEYTBSJSA-M 0.000 description 2
- 229940012189 methyl orange Drugs 0.000 description 2
- 238000005201 scrubbing Methods 0.000 description 2
- 238000010561 standard procedure Methods 0.000 description 2
- 229920003169 water-soluble polymer Polymers 0.000 description 2
- AZQWKYJCGOJGHM-UHFFFAOYSA-N 1,4-benzoquinone Chemical compound O=C1C=CC(=O)C=C1 AZQWKYJCGOJGHM-UHFFFAOYSA-N 0.000 description 1
- LYUXQQGPJXZWPV-UHFFFAOYSA-N 1,6-diazidopyrene Chemical compound C1=C2C(N=[N+]=[N-])=CC=C(C=C3)C2=C2C3=C(N=[N+]=[N-])C=CC2=C1 LYUXQQGPJXZWPV-UHFFFAOYSA-N 0.000 description 1
- 239000004375 Dextrin Substances 0.000 description 1
- 229920001353 Dextrin Polymers 0.000 description 1
- 229920000084 Gum arabic Polymers 0.000 description 1
- 241000978776 Senegalia senegal Species 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- 101150099457 Tppp gene Proteins 0.000 description 1
- 239000000205 acacia gum Substances 0.000 description 1
- 235000010489 acacia gum Nutrition 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 239000013043 chemical agent Substances 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- KRVSOGSZCMJSLX-UHFFFAOYSA-L chromic acid Substances O[Cr](O)(=O)=O KRVSOGSZCMJSLX-UHFFFAOYSA-L 0.000 description 1
- 235000019425 dextrin Nutrition 0.000 description 1
- 125000000664 diazo group Chemical group [N-]=[N+]=[*] 0.000 description 1
- BJZIJOLEWHWTJO-UHFFFAOYSA-H dipotassium;hexafluorozirconium(2-) Chemical compound [F-].[F-].[F-].[F-].[F-].[F-].[K+].[K+].[Zr+4] BJZIJOLEWHWTJO-UHFFFAOYSA-H 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000000866 electrolytic etching Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- AWJWCTOOIBYHON-UHFFFAOYSA-N furo[3,4-b]pyrazine-5,7-dione Chemical compound C1=CN=C2C(=O)OC(=O)C2=N1 AWJWCTOOIBYHON-UHFFFAOYSA-N 0.000 description 1
- FXHGMKSSBGDXIY-UHFFFAOYSA-N heptanal Chemical compound CCCCCCC=O FXHGMKSSBGDXIY-UHFFFAOYSA-N 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000001048 orange dye Substances 0.000 description 1
- HGBOYTHUEUWSSQ-UHFFFAOYSA-N pentanal Chemical compound CCCCC=O HGBOYTHUEUWSSQ-UHFFFAOYSA-N 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000002952 polymeric resin Substances 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000008262 pumice Substances 0.000 description 1
- 239000005871 repellent Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- GPRLSGONYQIRFK-MNYXATJNSA-N triton Chemical compound [3H+] GPRLSGONYQIRFK-MNYXATJNSA-N 0.000 description 1
- 150000003673 urethanes Chemical class 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
- 239000000080 wetting agent Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41C—PROCESSES FOR THE MANUFACTURE OR REPRODUCTION OF PRINTING SURFACES
- B41C1/00—Forme preparation
- B41C1/10—Forme preparation for lithographic printing; Master sheets for transferring a lithographic image to the forme
- B41C1/1008—Forme preparation for lithographic printing; Master sheets for transferring a lithographic image to the forme by removal or destruction of lithographic material on the lithographic support, e.g. by laser or spark ablation; by the use of materials rendered soluble or insoluble by heat exposure, e.g. by heat produced from a light to heat transforming system; by on-the-press exposure or on-the-press development, e.g. by the fountain of photolithographic materials
- B41C1/1016—Forme preparation for lithographic printing; Master sheets for transferring a lithographic image to the forme by removal or destruction of lithographic material on the lithographic support, e.g. by laser or spark ablation; by the use of materials rendered soluble or insoluble by heat exposure, e.g. by heat produced from a light to heat transforming system; by on-the-press exposure or on-the-press development, e.g. by the fountain of photolithographic materials characterised by structural details, e.g. protective layers, backcoat layers or several imaging layers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41N—PRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
- B41N3/00—Preparing for use and conserving printing surfaces
- B41N3/03—Chemical or electrical pretreatment
- B41N3/036—Chemical or electrical pretreatment characterised by the presence of a polymeric hydrophilic coating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41C—PROCESSES FOR THE MANUFACTURE OR REPRODUCTION OF PRINTING SURFACES
- B41C2201/00—Location, type or constituents of the non-imaging layers in lithographic printing formes
- B41C2201/04—Intermediate layers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41C—PROCESSES FOR THE MANUFACTURE OR REPRODUCTION OF PRINTING SURFACES
- B41C2210/00—Preparation or type or constituents of the imaging layers, in relation to lithographic printing forme preparation
- B41C2210/02—Positive working, i.e. the exposed (imaged) areas are removed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41C—PROCESSES FOR THE MANUFACTURE OR REPRODUCTION OF PRINTING SURFACES
- B41C2210/00—Preparation or type or constituents of the imaging layers, in relation to lithographic printing forme preparation
- B41C2210/04—Negative working, i.e. the non-exposed (non-imaged) areas are removed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41C—PROCESSES FOR THE MANUFACTURE OR REPRODUCTION OF PRINTING SURFACES
- B41C2210/00—Preparation or type or constituents of the imaging layers, in relation to lithographic printing forme preparation
- B41C2210/08—Developable by water or the fountain solution
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41C—PROCESSES FOR THE MANUFACTURE OR REPRODUCTION OF PRINTING SURFACES
- B41C2210/00—Preparation or type or constituents of the imaging layers, in relation to lithographic printing forme preparation
- B41C2210/14—Multiple imaging layers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41C—PROCESSES FOR THE MANUFACTURE OR REPRODUCTION OF PRINTING SURFACES
- B41C2210/00—Preparation or type or constituents of the imaging layers, in relation to lithographic printing forme preparation
- B41C2210/24—Preparation or type or constituents of the imaging layers, in relation to lithographic printing forme preparation characterised by a macromolecular compound or binder obtained by reactions involving carbon-to-carbon unsaturated bonds, e.g. acrylics, vinyl polymers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41C—PROCESSES FOR THE MANUFACTURE OR REPRODUCTION OF PRINTING SURFACES
- B41C2210/00—Preparation or type or constituents of the imaging layers, in relation to lithographic printing forme preparation
- B41C2210/26—Preparation or type or constituents of the imaging layers, in relation to lithographic printing forme preparation characterised by a macromolecular compound or binder obtained by reactions not involving carbon-to-carbon unsaturated bonds
- B41C2210/266—Polyurethanes; Polyureas
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Thermal Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Photosensitive Polymer And Photoresist Processing (AREA)
- Printing Plates And Materials Therefor (AREA)
- Paper (AREA)
Description
Vann-fremkallbar litografisk trykkeplate.Water-developable lithographic printing plate.
Denne oppfinnelse vedrører en ny fremgangsmåte for fremstilling av presensibiliserte litografiske trykkeplater, This invention relates to a new method for the production of presensitized lithographic printing plates,
og de derved fremstilte' nye litografiske trykkeplater. Mer spe-sielt vedrører denne oppfinnelse en ny fremgangsmåte for fremstilling av aluminium-baserte fotofølsomme litografiske trykkeplater, hvilken omfatter å belegge minst én overflate av et aluminium-basisark med en ikke-lysfølsom, vann-løselig, polymer harpiks og til sist påføre på nevnte.overflate en vann-uløselig og trykkfarve-mottagelig litografisk egnet lysfølsom blanding for å oppnå den ønskede fotofølsomme litografiske trykkeplate. and they thereby produced new lithographic printing plates. More specifically, this invention relates to a new method for the production of aluminum-based photosensitive lithographic printing plates, which comprises coating at least one surface of an aluminum base sheet with a non-light-sensitive, water-soluble, polymer resin and finally applying to said .surface a water-insoluble and ink-receptive lithographically suitable photosensitive composition to obtain the desired photosensitive lithographic printing plate.
Hittil har det tvært et problem i industrien å fremstille en mer økologisk aksepterbar litografisk trykkeplate og en fremgangsmåte for å fremkalle den. Det er kjent å fremstille slike plater hvortil det er nødvendig å anvende forskjellige kjemiske fremkallingsmidler som etter anvendelse må kasseres, typisk ved det offentlige renovasjonsvesen. Slike fremkallere er dyre å kjøpe, og det er uønsket å disponere dem gjennom sani-tærsystemer. Ved nærværende oppfinnelse blir det fremstilt en litografisk trykkeplate som er fremkallbar med. vanlig springvann, hvilket er både billig og økologisk akseptabelt-. To date, on the contrary, there has been a problem in the industry to produce a more ecologically acceptable lithographic printing plate and a method for developing it. It is known to produce such plates for which it is necessary to use various chemical developing agents which must be disposed of after use, typically by the public waste disposal service. Such developers are expensive to buy, and it is undesirable to dispose of them through sanitary systems. With the present invention, a lithographic printing plate is produced which can be developed with. ordinary tap water, which is both cheap and ecologically acceptable.
Ved den tidligere teknikk er det kjent å anvende visse vann-løselige blandinger av diazo-type ved fremstilling av litografiske trykkeplater som blir vann-uløselige ved billedlig eksponering for . ultra fiolett stråling ved standard-teknikker. Denne fremgangsmåte gir ikke anledning til fjerning av ikke-.1 eksponerte områder ved fremkalling med vann. De således fremstilte bilder er imidlertid ytterst svake og kan ikke motstå på-kjenningen ved langvarig trykking. Platene dannet ved denne fremgangsmåte har derfor behov for at en trykkfarve-mottagelig lakk eller annet lignende belegg påføres på billed-området. etter frem kalling, og det er denne belegning som virkelig' trykker det ønskede bilde og ikke diazo-forbindelsen. Det er viktig å merke seg at disse lakker også forurenser deres skyllevann. Et eksempel på et slikt vann-løselig diazo-system er beskrevet i U.S, patentskrift nr. 3,179,518, utstedt, til Sus et al. In the prior art, it is known to use certain water-soluble diazo-type mixtures in the production of lithographic printing plates which become water-insoluble upon pictorial exposure to . ultra violet radiation by standard techniques. This method does not allow for the removal of non-.1 exposed areas by developing with water. However, the images produced in this way are extremely weak and cannot withstand the stress of long-term printing. The plates formed by this method therefore need a printing ink-receptive varnish or other similar coating to be applied to the image area. after development, and it is this coating which really prints the desired image and not the diazo compound. It is important to note that these varnishes also contaminate their rinse water. An example of such a water-soluble diazo system is described in U.S. Patent No. 3,179,518, issued to Sus et al.
Andre forsøk inkluderer anvendelse av en blanding av en vann-løselig diazo-forbindelse og. en vann-løselig harpiks som blir gjort vann-uløselig ved eksponering ved standard-metoder. Bilder fremstilt ved denne fremgangsmåte er imidlertid ikke trykkfarve-mottagelige og er derfor ikke nyttige ved fremstilling av. litografiske trykkeplater. Foreliggende oppfinnelse vedrører bare vann-uløselige blandinger av trykkfarve-mottagelig litografisk fotosensibilisator og harpiks, hvilke blandinger anven- Other attempts include using a mixture of a water-soluble diazo compound and. a water-soluble resin which is rendered water-insoluble by exposure by standard methods. However, images produced by this method are not ink-receptive and are therefore not useful in the production of lithographic printing plates. The present invention relates only to water-insoluble mixtures of ink-susceptible lithographic photosensitizer and resin, which mixtures use
des i topp-belegningen.des in the top coating.
Hittil har det ved fremstillingen av kommersielt akseptable presensibiliserte litografiske trykkeplater hvortil det ikke kreves en etterfølgende lakkpåføring på de plateområder hvor det er dannet bilde, vært nødvendig å anvende fotofølsomme. blandinger som ikke kunne- fremkalles med vanlig springvann; Until now, in the production of commercially acceptable presensitized lithographic printing plates for which a subsequent varnish application is not required on the plate areas where an image has been formed, it has been necessary to use photosensitive. mixtures which could not be developed with ordinary tap water;
Plater fremstilt i henhold til disse fremgangsmåter kunne bare fremkalles ved hjelp av dyre, spesielle og omgivelses-forurensede . kjemiske midler. Plates produced according to these methods could only be developed using expensive, special and environmentally-contaminated . chemical agents.
Foreliggende oppfinnelse tilveiebringer en forbedret litografisk trykkeplate som kan fremkalles tilfredsstillende ved anvendelse av vanlig springvann, hvilket er både billig og akseptabelt for omgivelsene . ■ Ved foreliggende oppfinnelse, har det blitt funnet at en tilfredsstillende plate som tilfredsstilller disse kriterier kan fremstilles ved først å påføre en ikke-lysfølsom vann-løselig' polymer på overflaten av et metallark-substrat, og deretter belegge det således behandlede substrat med en fotofølsom blanding som omfatter.en vann-uløselig litografisk fotosensibilisator og en vann-uløselig harpiks. Denne belegningsblanding for den øvre del erkarakterisertsom vann-uløselig, trykkfarve-mottagelig og alternativt enten vann-gjennomtrengelig eller vann-ugjennomtrengelig. Med vann-gjehnomtrengelig menes at blandingen er uløselig i vann, og likevel kan vann filtreres gjennom blandingen. I et negativt virkende system er den øvre belegning til å begynne med vann-gjennomtrengelig og ved billedlig eksponering gjennom en egnet maske ved metoder som er kjent for fagfolk gjøres de eksponerte områder varin-ugjennomtrengelige og blir- værende trykkfarve-mottagelige. Ved vasking av en billedlig eksponert plate med vann trenger derfor vannet gjennom den negativt virkende fotofølsomme blanding i det ueksponerte•ikke-billed-område, og når frem til og oppløser den vann-løselige polymer under ikke-billed-området., og under-graver og fortærer således underlaget for ikke-billed-området. Disse områder som mangler tilstrekkelig understøttelse kan raskt og lett feies bort ved en kombinasjon av vann og en svak skrubbing. Siden de områder hvor det er dannet bilde blé gjort ■ vann-ugjennomtrengelig ved eksponeringen, kunné vann ikke nå frem til den. faste understøttelse under billed-områdene. Disse områder blir derfor ikke undergravet eller løftet bort. Områdene hvor det er dannet bilde er således trykkfarve-mottagelige og det rene metall-substrat som var sammenfallende med de fjernede ikke-billed-områder er av naturen trykkfarve-fra stø-tende . Resultatet er en kommersielt tilfredsstillende litografisk trykkeplate. The present invention provides an improved lithographic printing plate which can be developed satisfactorily using ordinary tap water, which is both cheap and environmentally acceptable. ■ In the present invention, it has been found that a satisfactory plate satisfying these criteria can be produced by first applying a non-photosensitive water-soluble polymer to the surface of a metal sheet substrate, and then coating the thus treated substrate with a photosensitive composition comprising.a water-insoluble lithographic photosensitizer and a water-insoluble resin. This coating mixture for the upper part is characterized as water-insoluble, ink-receptive and alternatively either water-permeable or water-impermeable. By water-permeable is meant that the mixture is insoluble in water, and yet water can be filtered through the mixture. In a negative-acting system, the upper coating is initially water-permeable and by pictorial exposure through a suitable mask by methods known to those skilled in the art, the exposed areas are made water-impermeable and remain ink-receptive. When washing an image-exposed plate with water, the water therefore penetrates through the negatively acting photosensitive mixture in the unexposed•non-image area, and reaches and dissolves the water-soluble polymer below the non-image area., and under- thus digging and devouring the substrate for the non-image area. These areas that lack sufficient support can be quickly and easily swept away by a combination of water and a light scrubbing. Since the areas where the image is formed were made ■ water-impermeable by the exposure, water could not reach it. fixed support under the image areas. These areas are therefore not undermined or lifted away. The areas where an image has been formed are thus ink-receptive and the pure metal substrate that coincided with the removed non-image areas is by nature ink-repellent. The result is a commercially satisfactory lithographic printing plate.
I et positivt virkende system, er det fotofølsomme øvre lag til å begynne med vann-ugjennomtrengelig og ved eksponering blir det gjort vann-gjennomtrengelig i de eksponerte områder og blir værende vann-ugjennomtrengelig i de ueksponerte områder. Fremkallingen blir utført på samme måte som tidligere beskrevet.. In a positive acting system, the photosensitive upper layer is initially water-impermeable and upon exposure is made water-permeable in the exposed areas and remains water-impermeable in the unexposed areas. The development is carried out in the same way as previously described.
Det er derfor et formål med foreliggende oppfinnelse å tilveiebringe en kommersielt akseptabel litografisk .trykke-plate. som kan fremkalles ved anvendelse av vanlig springvann. It is therefore an object of the present invention to provide a commercially acceptable lithographic printing plate. which can be induced by using ordinary tap water.
Det er et ytterligere formål med foreliggende oppfinnelse å tilveiebringe en kommersielt aksepterbar litografisk trykkeplate som kan fremkalles ved anvendelse av vanlig springvann, og som ikke behøver den etterfølgende påføring av.lakk eller lignende substans for å fremkalle bilde. ' It is a further object of the present invention to provide a commercially acceptable lithographic printing plate which can be developed using ordinary tap water, and which does not require the subsequent application of varnish or similar substance to develop the image. '
Et annet formål med foreliggende oppfinnelse er å tilveiebringe en kommersielt akseptabel litografisk trykkeplate hvortil det ikke behøves anvendelse av dyre og økologisk tvil-somme kjemikalier for fremkallingen. Another object of the present invention is to provide a commercially acceptable lithographic printing plate for which there is no need to use expensive and ecologically questionable chemicals for development.
Disse og andre formål ved foreliggende oppfinnelseThese and other purposes of the present invention
vil til dels bli omtalt og til dels fremgå ved betraktning av den detaljerte beskrivelse av de foretrukne utførelser senere i beskrivelsen. will be partly discussed and partly apparent when considering the detailed description of the preferred embodiments later in the description.
Som nevnt foran tilveiebringer foreliggende oppfinnelse en kommersielt akseptabel, vann-fremkallbar, litografisk trykkeplate. As mentioned above, the present invention provides a commercially acceptable, water-developable, lithographic printing plate.
Som et første trinn ved fremstillingen av den litografiske trykkeplate i henhold til oppfinnelsen blir et metallark-substrat, fortrinnsvis aluminium og legeringer derav, spe-' sielt slike aluminium-sammensetninger som er egnet for fremstilling av litografiske trykkeplater såsom "Alcoa" 3003 og "Alcoa" 1100, hvilket eventuelt er blitt forbehandlet ved at det er gitt en kornet overflate og/eller ved etsing og/eller ved anodiserings-teknikker som er velkjente i industrien, og As a first step in the production of the lithographic printing plate according to the invention, a metal sheet substrate, preferably aluminum and its alloys, especially such aluminum compositions which are suitable for the production of lithographic printing plates such as "Alcoa" 3003 and "Alcoa " 1100, which has possibly been pre-treated by giving it a grained surface and/or by etching and/or by anodizing techniques that are well known in the industry, and
eventuelt behandlet med en blanding som er egnet for anvendelse som mellomlag i litografiske plater, belagt med en ikke-lysføl-som, vann-løselig harpiks. Dette belagte substrat blir så behandlet med et lag av en substans som.' omfatter en vann-uløselig litografisk fotosensibilator og en vann-uløselig harpiks. Denne substans erkarakterisertsom vann-uløselig, trykkfarve-mottagelig og alternerende vann-gjennomtrengelig eller vann-ugjennomtrengelig før eksponering, for ultrafiolett eller aktinisk stråling. Fotosensibilisator-harpiks-substanseri er fortrinnsvis ikke en film-danner som vil hindre vann-gjennomtr.engelighet. optionally treated with a mixture suitable for use as an intermediate layer in lithographic plates, coated with a non-photosensitive, water-soluble resin. This coated substrate is then treated with a layer of a substance which.' comprises a water-insoluble lithographic photosensitizer and a water-insoluble resin. This substance is characterized as water-insoluble, ink-susceptible and alternately water-permeable or water-impermeable before exposure to ultraviolet or actinic radiation. The photosensitizer-resin substance is preferably not a film-former which will prevent water permeability.
I et negativt virkende system.blir ved billedlig eksponering In a negatively acting system.becomes by pictorial exposure
gjennom en maske ved metoder som. er kjent for fagfolk,, den foran through a mask by methods such as. is known to professionals,, the front
nevnte topplag-substans som til å begynne med var vann-gjennomtrengelig gjort vann-ugjennomtrengelig i de eksponerte områder mens den blir værende vann-gjennomtrengelig i de ueksponerte områder. Dette er riktig bare for negativt virkende systemer. said top layer substance which was initially water-permeable is rendered water-impermeable in the exposed areas while remaining water-permeable in the unexposed areas. This is true only for negatively acting systems.
I et positivt virkende system er den øvre belegning til å begynne med ' vann-ugjennomtrengelig og ved eksponering vil de ueksponerte områder bli værende vann-ugjennomtrengelige og de' eksponerte områder blir gjort vann-gjennomtrengelige. In a positive acting system the upper coating is initially water impermeable and upon exposure the unexposed areas will remain water impermeable and the exposed areas will be made water permeable.
I et negativt virkende system blir en vann-uløselig, negativt virkende, litografisk fotosensibilisator blandet med In a negative-acting system, a water-insoluble, negative-acting, lithographic photosensitizer is mixed with
en vann-gjennomtrengelig, oleofil, vann-uløselig harpiks. Den .resulterende blanding er også fotofølsom, vann-gjennomtrengelig, a water-permeable, oleophilic, water-insoluble resin. The resulting mixture is also photosensitive, water-permeable,
oleofil og vann-uløselig. Etter eksponering for ultrafiolett eller aktinisk stråling bindes fotosensibilatoren nærmere til harpiksen og blandingen blir gjort vann-ugjennomtrengelig. oleophilic and water-insoluble. After exposure to ultraviolet or actinic radiation, the photosensitizer binds more closely to the resin and the mixture is rendered water-impermeable.
I et negativt virkende system blir en vam^uløselig, vann-ugjennomtrengelig, positivt virkende, litografisk fotosensibilator blandet med en vann-g jennomtrengelig, oleofil', vann-uløselig- harpiks . Den resulterende blanding er også, oleofil og vann-uløselig, men fotosensibilisatoren bindes nærmere til harpiksen og den resulterende blanding er derfor vann-ugjennomtrengelig. Etter eksponering blir som ovenfor fotosensibilisatoren vann-gjennomtrengelig, og dette gjør den totale blanding vann-gjennomtrengelig i de eksponerte områder. In a negative-acting system, a water-insoluble, water-impermeable, positive-acting, lithographic photosensitizer is mixed with a water-permeable, oleophilic, water-insoluble resin. The resulting mixture is also oleophilic and water-insoluble, but the photosensitizer binds more closely to the resin and the resulting mixture is therefore water-impermeable. After exposure, as above, the photosensitizer becomes water-permeable, and this makes the total mixture water-permeable in the exposed areas.
Platen blir. så skyllet med vann, med eller, uten skrubbing. Som .et resultat tillater de vann-gjennomtrengelige områder at vann filtrerer gjennom til den vann-løselige harpiks i den nedre del av platen, og dette forårsaker, oppløsning av harpiksen og undergraving av de vann-gjennomtrengelige områder The plate will be. then rinsed with water, with or without scrubbing. As a result, the water-permeable areas allow water to filter through to the water-soluble resin in the lower part of the plate, causing dissolution of the resin and undermining of the water-permeable areas.
av den øvre belegning som'nå løsner og.vaskes bort. I de vann-ug jennomtrengelige • områder blir det tilbake et trykkfarve-mottagelig bilde som kan anvendes som en litografisk trykkeplate. of the upper coating which now loosens and is washed away. In the water-permeable • areas, a printing ink-receptive image remains, which can be used as a lithographic printing plate.
Vanlige forhåndsbehandlinger av metall-substrat inkluderer elektrolytisk anodisering i svovelsyre, kromsyre, salt-, syre og/eller fosforsyre, eller elektrolytisk etsing i saltsyre eller svovelsyre, og/eller kjemisk eller mekanisk behandling for å gi et kornaktig utseende, ved metoder som alle er velkjente for fagfolk. Mellomlag-blandinger som er anvendbare ved utførelse, av denne oppfinnelse, inkluderer vandige løsninger av Common metal substrate pretreatments include electrolytic anodizing in sulfuric acid, chromic acid, hydrochloric acid, and/or phosphoric acid, or electrolytic etching in hydrochloric or sulfuric acid, and/or chemical or mechanical treatment to produce a grainy appearance, by methods that are all well known to professionals. Interlayer compositions useful in the practice of this invention include aqueous solutions of
alkalimetallsilikat, såsom natriumsilikat, kiselsyre, fluorideralkali metal silicate, such as sodium silicate, silicic acid, fluorides
av metaller, i gruppe IV-B, alkalimetallsaltene eller syrene derav, of metals, in group IV-B, the alkali metal salts or their acids,
.polyakrylsyrer, alkalizirkonium-fluoridene, såsom kaliumzirkonium-heksafluorid, eller hydrofluorzirkonsyre i konsentrasjoner på .polyacrylic acids, the alkali zirconium fluorides, such as potassium zirconium hexafluoride, or hydrofluorozirconic acid in concentrations of
0,5 til 2 0 volum%.0.5 to 20% by volume.
Vann-løselige harpikser i bunn-laget som tidligere beskrevet kan innbefatte polyvinylpyrrolidon, polyvinylalkoholer, polyakrylamider og kopolymerer, syntetiske gummier såsom star;a- - bin, dekstriner, naturlige gummier såsom gummi arabicum og hydroksyetylcellulose-gummi. Water-soluble resins in the bottom layer as previously described may include polyvinylpyrrolidone, polyvinyl alcohols, polyacrylamides and copolymers, synthetic gums such as starch, dextrins, natural gums such as gum arabic and hydroxyethylcellulose gum.
Disse harpikser blir påført på substratet med en belegningsvekt på fra ca. 0,0054 til ca. 0,210 mg/cm , fortrinnsvis fra ca. 0,11 til ca. 0,105 mg/cm<2>, og mest foretrukket fra ca. 0,02 7 til ca. 0,064 ■ mg/cm 2. These resins are applied to the substrate with a coating weight of from approx. 0.0054 to approx. 0.210 mg/cm, preferably from approx. 0.11 to approx. 0.105 mg/cm<2>, and most preferably from approx. 0.02 7 to approx. 0.064 ■ mg/cm 2 .
Vann-g jennomtrengelige oleofile. harpikser som er anvendbare i den øvre belegningssubstans inkluderer, epoksyharpikser (såsom "Epon" 1031, 1001-1009-Shell Oil Company) ;..poly-uretaner (såsom Goodrich's "Estan"-serier 5714 , 5715 );. polyestere (f.eks. DV 521 tilgjengelige fra Polychrom Corp.); formvar (såsom 12/85 fra Monsanto)'; uretaner med lav molekylvekt (såsom DV 53, DV 532 fra Polychrom Corp.); butryl-harpikser (kommersielt tilgjengelig produkt fra Monsanto); polyox (polyetylenoksyd-serier fra Union Carbide); og polyvinylhydrogenftalat (kommersielt tilgjengelig fra Eastman Kodak). Water-permeable oleophiles. resins useful in the topcoat include, epoxy resins (such as "Epon" 1031, 1001-1009-Shell Oil Company); ... poly-urethanes (such as Goodrich's "Estan" series 5714 , 5715 );. polyesters (eg, DV 521 available from Polychrom Corp.); formvar (such as 12/85 from Monsanto)'; low molecular weight urethanes (such as DV 53, DV 532 from Polychrom Corp.); butryl resins (commercially available product from Monsanto); polyox (polyethylene oxide series from Union Carbide); and polyvinyl hydrogen phthalate (commercially available from Eastman Kodak).
De fotofølsomme blandinger som tilfredsstillende kan anvendes ved utførelse av denne oppfinnelse, er slike som er litografisk egnet og som er reaktive overfor aktinisk og/eller ultrafiolett lys. De fotofølsomme blandinger som kan anvendes som del av denne oppfinnelse er slike som er negativt eller positivt virkende og inkluderer slike negativt virkende fotoføl-somme midler som de aromatiske diazo-forbindelser såsom reak-sjonsproduktet mellom paradiazo-difenyl-amin-para-kondensat og 2-hydroksy-4-metoksy-behzofen6n-sulfonsyre; og azido-pyrenene, f.eks. 1-azido-pyren, 6-nitrb-l-azidopyren, 1,6-diazidopyren, 1., 8-diazidopyren , l-propionyl-6-azidopyren , l-acetyl-6-azidopyren ,'• l-n-butyryl-6-azidopyren, l-n-propionyl-8-brom-6-azidopyren og 8-n-propibnyl-l,6-diazidopyren; og slike positivt virkende foto-følsomme midler.som aromatiske diazo-oksyd-forbindelser, f.eks. .benzokinon,diazider, na ftokinon-diazider, og. polyacetaler som depolymeriseres under ultra fiolett ■ stråling, polymonokloracetaldehyd, polypropionaldehyd, poly-n-butyra lde.hyd, poly-cyano-^acetaldehyd, poly-B-cyanopropionaldehyd, poly-cyanopentaldehyd, poly-cyano-valeraidehyd,'poly-isbbutyraldehyd , poly-valeraldehyd, poly-heptaldehyd. De mest tilfredsstillende fotofølsomme midler kan velges av fagmannen i avhengighet av de resultater man søker å oppnå. The photosensitive compositions which can be satisfactorily used in carrying out this invention are those which are lithographically suitable and which are reactive towards actinic and/or ultraviolet light. The photosensitive mixtures that can be used as part of this invention are those that are negatively or positively acting and include such negatively acting photosensitive agents as the aromatic diazo compounds such as the reaction product between para-diazo-diphenyl-amine-para-condensate and 2 -hydroxy-4-methoxy-benzophenone-sulfonic acid; and the azido-pyrenes, e.g. 1-azido-pyrene, 6-nitrb-l-azidopyrene, 1,6-diazidopyrene, 1., 8-diazidopyrene , l-propionyl-6-azidopyrene , l-acetyl-6-azidopyrene ,'• l-n-butyryl-6 -azidopyrene, 1-n-propionyl-8-bromo-6-azidopyrene and 8-n-propibnyl-1,6-diazidopyrene; and such positively acting photo-sensitive agents as aromatic diazo-oxide compounds, e.g. .benzoquinone, diazides, na phtoquinone diazides, and. polyacetals which depolymerize under ultra violet ■ radiation, polymonochloroacetaldehyde, polypropionaldehyde, poly-n-butyra lde.hyde, poly-cyano-^acetaldehyde, poly-B-cyanopropionaldehyde, poly-cyanopentaldehyde, poly-cyano-valeraidehyde,'poly-isbbutyraldehyde , poly-valeraldehyde, poly-heptaldehyde. The most satisfactory photosensitizers can be selected by the person skilled in the art depending on the results sought to be achieved.
Den optimale mengde av hver ingrediens og valget av spesielle blandinger avhenger naturligvis av de spesielle egen- The optimum amount of each ingredient and the choice of special mixtures naturally depend on the particular characteristics of
..skaper som ønskes for den endelige litografiske plate. Selv..creates as desired for the final lithographic plate. Self
om det i virkeligheten er et ubegrenset område for forholdet mellom mengdene av fotosensibilisator og harpiks, så er et.prak-tisk anvendbart forhold mellom sensibilisator og harpiks i tppp-belegningen fra ca. 1 til 10 vektdeler sensibilisator til fra ca. 50 til 1 vektdel harpiks.. Et foretrukket forhold er fra. ca. 1 til 5 vektdeler sensibilisator til fra ca. 10 til 1 vektdel harpiks. Det mest foretrukne forhold er fra ca. 1 til 3 vektdeler sensibilisator til fra ca. 4 til 1 vektdel harpiks. • if in reality there is an unlimited range for the ratio between the amounts of photosensitizer and resin, then a practically applicable ratio between sensitizer and resin in the tppp coating is from approx. 1 to 10 parts by weight sensitizer to from approx. 50 to 1 part by weight of resin. A preferred ratio is from. about. 1 to 5 parts by weight sensitizer to from approx. 10 to 1 part by weight resin. The most preferred ratio is from approx. 1 to 3 parts by weight sensitizer to from approx. 4 to 1 part by weight resin. •
Belegningsvekten for blandingen av fotosehsibilåtor og harpiks på platen er fra ca. 0,005 i 4 6il ■ ca. 0,32 0 mg/cm 2,. med et foretrukket område på fra ca. 0,038 til ca. 0,210 mg/cm , og et mest foretrukket område på fra ca. 0,054 til ca. 0,105 The coating weight for the mixture of photosensitizer and resin on the plate is from approx. 0.005 in 4 6il ■ approx. 0.32 0 mg/cm 2,. with a preferred range of from approx. 0.038 to approx. 0.210 mg/cm, and a most preferred range of from approx. 0.054 to approx. 0.105
,2,2
mg/cm .mg/cm .
En slik fremstilt plate, ved billedlig eksponering ved metoder som er .velkjente for fagfolk, kan fremkalles ved anvendelse av vann-skylling, med eller uten fysisk gnidning. Anvendbare fremkallingstider varierer fra 5 sekunder opptil ca. 4 minutter i avhengighet av størrelsen på platen. Foretrukne fremkallingstider varierer fra ca. 5 sekunder til ca. 1 minutt..Fremkalling i vesentlig lengre tider kan resultere i en viss uønsket undergraving av de vann-ug.jerinomtrengelige overflate-områder. Such a produced plate, by pictorial exposure by methods well known to those skilled in the art, can be developed using water rinsing, with or without physical rubbing. Usable development times vary from 5 seconds up to approx. 4 minutes depending on the size of the plate. Preferred development times vary from approx. 5 seconds to approx. 1 minute..Development for significantly longer times can result in a certain unwanted undermining of the water- and iron-permeable surface areas.
De følgende eksempler er tilveiebrakt for å illustrere utførelsen av foreliggende oppfinnelse, og er på ingen måte begrensende for dens omfang... The following examples are provided to illustrate the practice of the present invention, and are in no way limiting its scope...
EKSEMPEL 1EXAMPLE 1
Det ble fremstilt et aluminium-substrat for litografisk anvendelse ved å gjøre overflaten kornaktig med våt pimpstein og deretter foreta en anodisering i svovelsyre inntil en oksyd-vekt på o 0,210 mg/cm 2. Prøven ble ytterligere behandlet i en 5%-ig løsning av natriumsilikat i 1 minutt ved 82°C for å forbedre de hydrofile egenskaper tii substrat-overflaten. Substratet ble først belagt med en 1%-ig vandig løsning av poly-vinylklorid til en belegningsvekt på o 0,021 mg/cm 2. En dråpe pr. 100 ml med fuktemidlet "Triton". X-100 ble inkorporert i. denne løsning for å forbedre dens fukte- og filmdannende egen- An aluminum substrate for lithographic use was prepared by making the surface grainy with wet pumice and then anodizing in sulfuric acid until an oxide weight of o 0.210 mg/cm 2. The sample was further treated in a 5% solution of sodium silicate for 1 minute at 82°C to improve the hydrophilic properties of the substrate surface. The substrate was first coated with a 1% aqueous solution of polyvinyl chloride to a coating weight of o 0.021 mg/cm 2 . One drop per 100 ml with the wetting agent "Triton". X-100 was incorporated into this solution to improve its wetting and film-forming properties.
skaper. Med en gang etter at.løsningen var tørket ble det på ,creates. Immediately after the solution had dried, it became
det behandlede substrat påført en vann-gjennomtrengelig, litografisk egnet, lysfølsom blanding med en belegningsvekt på the treated substrate coated with a water-permeable, lithographically suitable, light-sensitive composition with a coating weight of
0,066 mg/cm 2. Denne blanding var sammensatt av 1 vektdej. sensi-biliseringsmiddel (para-diazo-difenylamin-sulfat-harpiks omsatt med 2-hydroksy-4-metoksy-benzofenon-sulfonsyre), 2 vektdeler epoksy-harpiké ('"Epon" 1031 Shell Chemical), 0,1 vektdel basisk blått farvestoff og 0,025 vektdeler metyloransje i et løsnings-middelsystem av 28% metylalkohol, 28% metylcellosolv og 44% metylenklorid. Så snart den-påførte blanding var tørket ble den belagte aluminiumplate eksponert ved et negativt transpa- 0.066 mg/cm 2 . This mixture was composed of 1 weight dough. sensitizer (para-diazo-diphenylamine sulfate resin reacted with 2-hydroxy-4-methoxy-benzophenone-sulfonic acid), 2 parts by weight epoxy resin ("Epon" 1031 Shell Chemical), 0.1 part by weight basic blue dye and 0.025 parts by weight methyl orange in a solvent system of 28% methyl alcohol, 28% methylcellosolve and 44% methylene chloride. As soon as the applied mixture was dried, the coated aluminum sheet was exposed by a negative transpa-
rent med en konvensjonell.NuArc ultrafiolett eksponeringsenhet i 2 minutter . Straks etter eksponeringen ble platen .'fremkalt ved hjelp av vanlig springvann ved 15,5°C for å fjerne de ueksponerte ikke-billed-områder på platen. Platen ble anbrakt i en konvensjonell offset-presse og det ble foretatt 10.000 akseptable avtrykk. clean with a conventional.NuArc ultraviolet exposure unit for 2 minutes . Immediately after exposure, the plate was developed using ordinary tap water at 15.5°C to remove the unexposed non-image areas of the plate. The plate was placed in a conventional offset press and 10,000 acceptable impressions were made.
EKSEMPEL 2EXAMPLE 2
Et uanodisert aluminium-substrat ble kjemisk etsetAn unanodized aluminum substrate was chemically etched
i en 10%-ig løsning av kaliumhydroksyd i 1 minutt ved 82°C. Overflaten ble så behandlet med en 5%-ig løsning av riatrium-.silikat som et mellomlegg. Deretter ble det behandlede substrat først belagt med polyviny.la lkohol til en belegningsvekt på in a 10% solution of potassium hydroxide for 1 minute at 82°C. The surface was then treated with a 5% solution of sodium silicate as an intermediate layer. Then the treated substrate was first coated with polyvinyl alcohol to a coating weight of
0,032 mg/cm 2 og ble så påført et topp-lag som omfatter 1 vektdel sensibilisator, som i eksempel 1, 1 vektdel epoksyharpiks 0.032 mg/cm 2 and was then applied a top layer comprising 1 part by weight of sensitizer, as in example 1, 1 part by weight of epoxy resin
(1031 Shell), 1 vektdel epoksyharpiks•(1007 Shell), 0,14. vektdeler basisk blått farvestoff og 0,05 vektdeler metyloransje-farvestoff i et løsningsmiddel-system av 44% metylenklorid, (1031 Shell), 1 part by weight epoxy resin•(1007 Shell), 0.14. parts by weight basic blue dye and 0.05 parts by weight methyl orange dye in a solvent system of 44% methylene chloride,
28% metylcellosolve og 28% metylalkohol, med en belegningsvekt på 0,086 mg/cm 2. Denne plate ble deretter eksponert, fremkalt 28% methyl cellosolve and 28% methyl alcohol, with a coating weight of 0.086 mg/cm 2 . This plate was then exposed, developed
med vanlig springvann og den ble anvendt i en konvensjonell trykkpresse ved 5000 avtrykk. with ordinary tap water and it was used in a conventional printing press at 5,000 impressions.
EKSEMPEL 3EXAMPLE 3
Fremgangsmåten fra eksempel 1 ble fulgt, bortsett fra at bunn-laget omfattet polyvinylpyrrolidon med en belegningsvekt på 0,32 mg/cm 2, og topp-laget.omfattet 1 vektdel sensibilisator som i eksempel 1, 1 vektdel "Epon"-epoksy 1031 (Shell) i et løsningsmiddelsystem som i eksempel 1, ved en belegningsvekt på 0,08.1 mg/cm 2. Det ble oppnådd lignende resultater. The procedure from Example 1 was followed, except that the bottom layer comprised polyvinylpyrrolidone with a coating weight of 0.32 mg/cm 2 , and the top layer comprised 1 part by weight of sensitizer as in Example 1, 1 part by weight of "Epon" epoxy 1031 ( Shell) in a solvent system as in Example 1, at a coating weight of 0.08.1 mg/cm 2 . Similar results were obtained.
EKSEMPEL 4EXAMPLE 4
Fremgangsmåten fra eksempel 2 ble fulgt, bortsett fra at bunn-laget omfattet en blanding av polyvinylalkohol og starabin-gummi (Staley Co.) og de hadde en belegningsvekt på. 0,032 mg/cm 2 , og topp-belegningen omfattet 1 vektdel sensibilisator som i eksempel 1, 1 vektdel epoksy 1.031. ("Epon" Shell) og 1 vektdel polyuretan ("Estane" 5714 Goodrich) i løsnings-middelsystemet fra eksempel 2, og det hadde en belegningsvekt på 0,086 mg/cm 2. Etter -Teksponering og fremkalling i vanlig springvann, ble platen anbrakt i en konvensjonell trykkpres.se og anvendt til 2 5.000 akseptable trykkinger. The procedure of Example 2 was followed, except that the bottom layer comprised a mixture of polyvinyl alcohol and starabin rubber (Staley Co.) and had a coating weight of 0.032 mg/cm 2 , and the top coating comprised 1 part by weight of sensitizer as in example 1, 1 part by weight of epoxy 1.031. ("Epon" Shell) and 1 part by weight of polyurethane ("Estane" 5714 Goodrich) in the solvent system of Example 2, and it had a coating weight of 0.086 mg/cm 2 . After exposure and development in ordinary tap water, the plate was placed in a conventional printing press and used for 25,000 acceptable printings.
EKSEMPEL 5EXAMPLE 5
Fremgangsmåten fra eksempel 1 ble fulgt, bortsett fra at substratet ikke ble anodisert, at bunn-laget omfattet hydroksyetylcellulose-gummi med en vekt på 0,04.3. mg/cm 2 og at. topp-laget omfattet 1 vektdel sensibilisator som i eksempel 1, 1 vektdel epoksyharpiks ("Epon" 1031 Shell), 1 vektdel polyuretan ("Estane" 5715 Goodrich) i løsningsmiddelsystemet fra eksempel 1, og hadde en belegningsvekt på 0,105 mg/cm 2. Etter eksponering og fremkalling med vanlig springvann ble det på platen trykket 30.000 akseptable avtrykk i en offset-presse. The procedure from example 1 was followed, except that the substrate was not anodized, that the bottom layer comprised hydroxyethyl cellulose rubber with a weight of 0.04.3. mg/cm 2 and at. the top layer comprised 1 part by weight of sensitizer as in example 1, 1 part by weight of epoxy resin ("Epon" 1031 Shell), 1 part by weight of polyurethane ("Estane" 5715 Goodrich) in the solvent system from example 1, and had a coating weight of 0.105 mg/cm 2 . After exposure and development with ordinary tap water, 30,000 acceptable impressions were printed on the plate in an offset press.
Det skal selvsagt forståes at.dén foregående åpen-^ barelsé er ment å illustrere oppfinnelsen,og at det kan foretas tallrike forandringer i de driftsforhold og mengdeforhold som er angitt uten å avvike fra omfanget av oppfinnelsen såsom åpenbaret og definert i de etterfølgende krav. It should of course be understood that the preceding disclosure is intended to illustrate the invention, and that numerous changes can be made in the operating conditions and quantities indicated without deviating from the scope of the invention as disclosed and defined in the subsequent claims.
Claims (14)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US79828277A | 1977-05-19 | 1977-05-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NO774516L true NO774516L (en) | 1978-11-21 |
Family
ID=25172987
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NO77774516A NO774516L (en) | 1977-05-19 | 1977-12-30 | WATER-PRODUCABLE LITHOGRAPHIC PRINTING PLATE |
Country Status (9)
| Country | Link |
|---|---|
| JP (1) | JPS53145707A (en) |
| AU (1) | AU3602578A (en) |
| DE (1) | DE2821776A1 (en) |
| DK (1) | DK565077A (en) |
| FR (1) | FR2391488A1 (en) |
| GB (1) | GB1588620A (en) |
| NL (1) | NL7801624A (en) |
| NO (1) | NO774516L (en) |
| SE (1) | SE7805736L (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4447512A (en) * | 1982-01-25 | 1984-05-08 | Polychrome Corporation | Method for making a negative working lithographic printing plate |
| JP2778116B2 (en) * | 1989-06-07 | 1998-07-23 | 大日本インキ化学工業株式会社 | Photosensitive composition |
| US5167489A (en) * | 1991-04-15 | 1992-12-01 | General Electric Company | Forward swept rotor blade |
| WO1993006528A1 (en) * | 1991-09-13 | 1993-04-01 | Sun Chemical Corporation | Positive-working coating compositions |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2681310A (en) * | 1949-10-25 | 1954-06-15 | Harris Seybold Co | Treating aluminum surfaces |
| BE507657A (en) * | 1950-12-06 | |||
| US3003413A (en) * | 1957-03-12 | 1961-10-10 | Eastman Kodak Co | Film printing plate and method of manufacture |
| DE1622462A1 (en) * | 1960-10-11 |
-
1977
- 1977-12-19 DK DK565077A patent/DK565077A/en not_active Application Discontinuation
- 1977-12-30 NO NO77774516A patent/NO774516L/en unknown
-
1978
- 1978-02-13 NL NL7801624A patent/NL7801624A/en not_active Application Discontinuation
- 1978-04-13 JP JP4376378A patent/JPS53145707A/en active Pending
- 1978-05-11 AU AU36025/78A patent/AU3602578A/en active Pending
- 1978-05-12 GB GB19117/78A patent/GB1588620A/en not_active Expired
- 1978-05-18 SE SE7805736A patent/SE7805736L/en unknown
- 1978-05-18 DE DE19782821776 patent/DE2821776A1/en not_active Withdrawn
- 1978-05-19 FR FR7814930A patent/FR2391488A1/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| AU3602578A (en) | 1979-11-15 |
| DE2821776A1 (en) | 1978-11-30 |
| JPS53145707A (en) | 1978-12-19 |
| DK565077A (en) | 1978-11-20 |
| SE7805736L (en) | 1978-11-20 |
| FR2391488A1 (en) | 1978-12-15 |
| GB1588620A (en) | 1981-04-29 |
| NL7801624A (en) | 1978-11-21 |
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