EP1214197A1 - Thermal waterless lithographic printing plates - Google Patents
Thermal waterless lithographic printing platesInfo
- Publication number
- EP1214197A1 EP1214197A1 EP00945482A EP00945482A EP1214197A1 EP 1214197 A1 EP1214197 A1 EP 1214197A1 EP 00945482 A EP00945482 A EP 00945482A EP 00945482 A EP00945482 A EP 00945482A EP 1214197 A1 EP1214197 A1 EP 1214197A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- near infrared
- formula
- alkyl
- infrared absorbing
- cross
- 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
Links
Classifications
-
- 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
- B41N1/00—Printing plates or foils; Materials therefor
- B41N1/003—Printing plates or foils; Materials therefor with ink abhesive means or abhesive forming means, such as abhesive siloxane or fluoro compounds, e.g. for dry lithographic printing
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- 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
- B41C1/1033—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 by laser or spark ablation
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- 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
- B41C2210/16—Waterless working, i.e. ink repelling exposed (imaged) or non-exposed (non-imaged) areas, not requiring fountain solution or water, e.g. dry lithography or driography
Definitions
- the invention relates to thermal waterless lithographic printing plates comprising layers of inherent near infrared absorbing polymers for computer- to-plate and digital-offset-press technologies. More specially, this invention relates to thermal waterless lithographic printing plates, which can be imaged with near infrared laser light and which do not require post chemical processing step.
- Thermal waterless lithographic printing plates are known.
- U.S. patents 5,310,869 and 5,339,737 describe thermal waterless lithographic printing plates comprising an ink-repelling layer overlying a near infrared absorbing imaging layer.
- the ink-repelling layer is transparent to radiation and comprises mainly cross-linked silicone polymers.
- the near infrared absorbing imaging layer contains binder resins and near infrared absorbing materials, such as carbon black and molecular dyes.
- These thermal waterless lithographic printing plates require high doses of laser energy to ablate the near infrared absorbing layer and weaken the adhesion of the ink repelling cross-linked silicone polymer layer.
- the exposed area of the plate must be removed during a further chemical processing step to become an image area.
- U.S. Patent 5,379,698 also describes thermal waterless lithographic printing plates, which comprise ink repelling cross-linked silicone polymers overlying a thin metallic or metal oxide film of titanium deposited on a substrate as a laser imaging layer.
- U.S. Patent 5,487,338 teaches to use an infrared reflective layer situated below the near infrared absorbing layer. Manufacturing of such printing plates requires vacuum deposition of the corresponding metals. Hence it is very expensive.
- WO9831550, WO9700175 and WO9401280 also describe thermal ⁇ vaterless lithographic printing plates, which comprise a layer of ink repelling cross- linked silicone polymers overlying a near infrared absorbing imaging layer containing binder resins and near infrared absorbing pigments, dyes or thin metal films.
- thermal waterless lithographic printing require high laser energy doses for imaging.
- WO9706956 also describes thermal waterless lithographic p ⁇ nting plates, which comprise a near infrared absorbing layer containing binder resins and near infrared absorption dyes or pigments, and a overlying transparent hydrophobic layer containing fluorinated polymeric materials soluble in fluorinated solvents. Upon exposure to near infrared laser radiation, the exposed area is ablated and accepts ink, while the non-exposed area still repels ink.
- One drawback of such plates is that the non-exposed area is sensitive to handling and easily becomes dirty on press.
- EP0764522 also provides a thermal waterless printing plate containing a near infrared transparent cross-linked silicone polymer ink repelling layer and a near infrared absorbing imaging layer.
- the ink repelling layer and near infrared absorbing imaging layers contain cross-linked functionality, which form interlayer cross-linked bonds to increase the run length on press.
- Such printing plate requires high laser energy doses for imaging and requires a chemical processing step.
- WO991 1467 also provides a thermal waterless lithographic printing plate, comprising a layer of ink repelling cross-linked silicone polymer overlying a near infrared absorbing imaging layer containing polyurethane resins and near infrared absorption dyes. Although, such printing plate exhibits faster laser imaging speed, they are very sensitive to the different developers used in the final chemical processing step.
- the main objects is to provide lithographic printing plate coating compositions which combine the advantages of: long-life printing plates, absence of phase separation of the overlaid coatings, easily manufactured and inexpensive coating formulations, coatings which may be precisely and rapidly imaged with laser accuracy.
- This invention relates to thermal waterless lithographic printing plates for computer-to-plate and digital-offset-press technologies. More specially, this invention relates to thermal lithographic printing plates comprising:
- the present invention provides a thermal waterless printing plate suitable for near infrared laser imaging, said printing plate comprising: (i) a support substrate, and (ii) a composite top layer consisting of:
- the thermal waterless lithographic printing plates of this invention can be imaged with near infrared laser lights having a radiation between about 780 and about 1200 nm. Depending on the laser imaging energy doses, the imaged plates may not require post chemical processing step.
- This invention relates to thermal waterless lithographic printing plates for computer-to-plate and digital-offset-press technologies. More specially, this invention relates to thermal waterless lithographic printing plates, which can be imaged with near infrared laser light having a radiation between about 780 and about 1200 nm.
- the thermal waterless lithographic printing plates of this invention comprise (I) a support substrate, and (II) a composite top layer consisting of an inherent near infrared absorbing ink-repelling composite comprising inherent near infrared absorbing polymers.
- the support substrate of this invention may be any sheet material such as metal, plastic and paper.
- the surface of the substrate may be treated to enhance the adhesion by techniques known in the art.
- the surface of aluminum sheet may be treated by metal finishing techniques including electrochemical roughening, chemical roughening, mechanical roughening, anodizing and the like.
- the surface of plastic sheets may be modified by corona treatment and chemical etchings.
- the near infrared absorbing ink repelling composite layer is the near infrared absorbing ink repelling composite layer.
- the near infrared absorbing ink repelling composite layer of this invention comprises (a) a near infrared absorbing adhesion promoting layer, which is applied between a support substrate and (b) a near infrared absorbing ink repelling cross-linked silicone polymer layer.
- the near infrared absorbing adhesion promoting layer comprises mainly inherent near infrared absorbing polymer having reactive functionality, which can form covalent bonds with the near infrared absorbing ink repelling cross-linked silicone polymer layer.
- the near infrared absorbing adhesion promoting polymers exhibit strong absorption band between 780 and 1200nm.
- the preferred class of near infrared absorbing polymers of this invention is urethane polymers, which are obtained from the reactions of alkyl or aryl compounds containing diisnr.vanatp f ⁇ ⁇ nr , tinnal ⁇ I I ⁇ Q with near infrurorl ahcnrntinn rhrnmnn nrQ containing alcohol functional groups and certain tertiary alcohol.
- the inherent near infrared absorbing polyurethane of this invention may be represented according to formula I.
- a and b represent molar ratios, which vary from 0.1 to 0.9.
- T represents near infrared transparent repeating segment, which may have a structure according to Formula II, III, IV, and V.
- A represents near infrared absorbing repeating segment, which may have a structure according the Formula VI.
- Z1 and Z2 represent sufficient atoms to form a fused substituted or unsubstituted aromatic rings, such as phenyl and naphthyl.
- R1 and R2 represent alkyl, alkyloxy, alkyl halide, alkyl pyridine, allyloxy, vinyloxy, alkylthio, arylthio, aminothiophenol, sulfoalkyl, and carboxyalkyl substitution.
- R3 represents hydrogen, alkyl, and aryl substitution.
- X1 represents an anionic counter ion selected from bromide, chloride, iodide, tosylate, triflate, trifluoromethane carbonate, dodecyl benzosylfonate and tetrafluoroborate.
- n 0 and 1.
- the inherent near infrared absorbing polymers of this invention exhibit strong absorption band between 780 and 1200 nm. They may have glass transition temperature between 110 and 150°C and decomposition temperature between 180 and 300°C.
- the near infrared absorbing adhesion promoting layer of this invention may contain binder resins, which are transparent to near infrared radiation.
- the preferred binder resins are polymers containing monomer units derived from nitrocellulose, hydroxyalkylcellulose, styrene, carbonate, amide, urethane, acrylate, vinyl alcohol, and ester.
- the near infrared absorption segments containing in the polymer backbone Upon exposure to near infrared radiation between 780 and 1200 nm, the near infrared absorption segments containing in the polymer backbone convert the photo-energy into heat, which induce the thermal fragmentation and decomposition of the near infrared transparent segments via cleavage mechanism described by Foley et. al. (U.S. Patent 5,156,938) according to Formula VII. CH. CH.
- the near infrared absorbing ink-repelling layer of this invention comprises cross-linked silicone polymers having near infrared absorption repeating units.
- the near infrared absorbing repeating units form covalent bonds with the cross-linked silicone polymeric networks according to
- B represents near infrared absorbing repeating units, which exhibits strong absorption bands between 780 and 1200 nm.
- the near infrared absorption repeating units comprise derivatives of indole, benz[e]indole, benz[cd]indole, benzothiazole, napthothiazole, benzoxazole, napthoxazole, benzselenazole, and napthoselenazole, which can be represented according to Formula XI, XII and XIII:
- Formula XIII adhesion promoting beneath layer result in the formation of low molecular weight materials. These decomposed products are easily removed by the printing inks on the printing press during roll up period. The laser exposure area eventually becomes accepting inks and the non-exposure area still repelling inks.
- Near infrared absorption polymer ADS-00-1 CTP was synthesized by slowly adding 21.2 parts of trimethyl-1 ,6-diisocyanatohexane (available from Aldrich Chemicals) into a solution containing 100 parts of N-methyl pyrrolidinone, 6.8 parts of 2-[2-[2-choloro-3-[2-(1 ,3-dihydro-1-(2-hydroxyethyl)-3,3-dimethyl-2H- benz[e]indol-2-ylidene)ethylidene]-1 -cyclohexene-1 -yl]ethenyl]-1 -(2- hydroxyethyl) -3,3-dimethyl-1 H-benz[e]indolium perchlorate (available from American Dye Source, Inc.), 18.0 parts of a,a,a ⁇ a'-tetramethyl-1 ,4- benzenedimethanol (available from Aldrich Chemicals) and 0.5 parts of dibuty
- ADS-001-CTP ADS-001-CTP on polyester film shows a broad absorption band having a maximum at around 842 nm.
- the ideal structure of ADS-001-CTP can be represented as following:
- Near infrared absorption polymer ADS-002-CTP was synthesized by slowly adding 26.0 parts of methylene bis(4-cyclohexylisocyanate) (available from Bayer) into a solution containing 100 parts of N-methyl pyrrolidinone, 6.8 parts of 2-[2-[2-choloro-3-[2-(1 ,3-dihydro-1 -(2-hydroxyethyl)-3,3-dimethyl-2H- benz[e]indol -2-ylidene)ethylidene]-1 -cyclohexene-1 -yl]ethenyl]-1 -(2- hydroxyethyl)-3,3-dimethyl-1 H-benz[e]indolium perchlorate (available from American Dye Source, Inc.), 18.0 parts of a,a,a',a'-tetramethyl-1 ,4- benzenedimethanol (available from Aldrich Chemicals) and 0.5 parts of dibutyl
- ADS-002-CTP near infrared absorbing polymer has the glass transition and decomposition temperatures at around 132 °C and 214 °C, respectively.
- the film of near infrared absorption polymer ADS-002-CTP on polyester film shows a broad absorption band having a maximum at around 839 nm.
- the ideal structure of ADS-002-CTP can be represented as following:
- Near infrared absorption polymer ADS-003-CTP was synthesized by slowly adding 21.2 parts of trimethyl-1 ,6-diisocyanatohexane (available from Aldrich Chemicals) into a solution containing 100 parts of N-methyl pyrrolidinone, 6.4 parts of 2-[2-[2-allyloxy-3-[2-(1 ,3-dihydro-1-(2-hydroxyethyl)-3,3-dimethyl-2H- benz[e]indol-2-ylidene)ethylidene]-1 -cyclohexene-1 -yl]ethenyl]-1 -(2- hydroxyethyl) -3,3-dimethyl-1 H-benz[e]indolium perchlorate (available from American Dye Source, Inc.), 18.0 parts of a,a,a',a'-tetramethyl-1 ,4- benzenedimethanol (available from Aldrich Chemicals) and 0.5 parts of di
- ADS- 003-CTP on polyester film shows a broad absorption band having a maximum at around 832 nm.
- the ideal structure of ADS-003-CTP can be represented as following:
- Near infrared absorption polymer ADS-004-CTP was synthesized by slowly adding 26.0 parts of methylene bis(4-cyclohexylisocyanate) (available from Bayer) into a solution containing 100 parts of N-methyl pyrrolidinone, 6.8 parts of 2-[2-[2-choloro-3-[2-(1 ,3-dihydro-1 -(2-hydroxyethyl)-3,3-dimethyl-2H- benz[e]indol -2-ylidene)ethylidene]-1 -cyclohexene-1 -yl]ethenyl]-1 -(2- hydroxyethyl)-3,3-dimethyl-1 H-benz[e]indoiium perchlorate (available from American Dye Source, Inc.), 11.6 parts of a,a,a',a'-tetramethyl-1 ,4- benzenedimethanol (available from Aldrich Chemicals), 2.6 parts of 3-allyl- 1
- ADS- 004-CTP near infrared absorbing polymer has the glass transition and decomposition temperatures at around 113 and 210 °C, respectively.
- the film of near infrared absorption polymer ADS-004-CTP on polyester film shows a broad absorption band having a maximum at around 841 nm.
- the ideal structure of ADS-004-CTP can be represented as following:
- Near infrared absorption polymer ADS-CTP-005 was synthesized by slowly adding 21.2 parts of trimethyl-1 ,6-diisocyanatohexane (available from Aldrich Chemicals) into a solution containing 100 parts of N-methyl pyrrolidinone, 6.8 parts of 2-[2-[2-choloro-3-[2-(1 ,3-dihydro-1 -(2-hydroxyethyl)-3,3-dimethyl-2H- benz[e]indol-2-ylidene)ethylidene]-1 -cyclohexene-1 -yl]ethenyl]-1 -(2- hydroxyethyl) -3,3-dimethyl-1 H-benz[e]indolium perchlorate (available from American Dye Source, Inc.), 11.6 parts of a,a,a',a'-tetramethyl-1 ,4- benzenedimethanol (available from Aldrich Chemicals), 3.4 parts of 2,
- ADS-005-CTP near infrared absorbing polymer has the glass transition and decomposition temperatures at around 1 17 and 215 °C, respectively.
- the film of near infrared absorption polymer ADS-005-CTP on polyester film shows a broad absorption band having a maximum at around 841 nm.
- the ideal structure of ADS-005- CTP can be represented as following:
- the near infrared absorbing ink repelling cross-linked silicone polymer was prepared by adding 300 parts of water containing 1.0 part of 2-[2-[2-allyloxy-3- [2-(1 ,3-dihydro-1 -(4-sulfobutyl)-3,3-dimethyl-2H-benz[e]indol-2-ylidene) ethylidene]-1 -cyclohexene-1 -yl]ethenyl]-1 -(4-sulfobutyl)-3,3-dimethyl-1 H- benz[e]indolium inner salt (available from American Dye Source, Inc.) into a solution containing 50 parts of reactive silicone polymeric emulsion (Syl-Off 7910, available from Dow Corning, 40 % solid weight), 50 parts of silicone polymeric cross-linker emulsion containing platinum catalyst (Syl-Off 7922, available from Dow Corning, 40 % solid weight) and 1.5 parts of silicone wetting
- the freshly prepared polymeric solution was coated on an anodized aluminum substrate using a wire wound rod.
- the coating was dried under hot air stream and then further cured at 120°C for 5 minutes to produce a uniform coating film having a coating weight around 1.0 g/m 2 .
- the UV-Vis-NIR spectrum of the resulted polymer on polyester film shows a broad absorption band having a maximum at 840 nm.
- the ideal structure of the near infrared absorbing ink repelling cross-linked silicone polymer can be represented as following:
- the near infrared absorbing ink repelling cross-linked silicone polymer was prepared by adding 300 parts of water containing 1.0 part of 2-[2-[2-chloro-3- [2-(1 ,3-dihydro-1-allyl-3,3-dimethyl-7-sulfonyl-2H-benz[e]indol-2-ylidene) ethylidene]-1-cyclohexene-1-yl]ethenyl]-1-allyl-3,3-dimethyl-7-sulfonyl-1 H- benz[e]indolium 4-methylbenzenesulfonic acid (available from American Dye Source, Inc.) into a solution containing 50 parts of reactive silicone emulsion (Syl-Off 7910, available from Dow Corning, 40 % solid weight), 50 parts of reactive silicone emulsion with platinum catalyst (Syl-Off 7922, available from Dow Corning, 40 % solid weight) and 1.5 parts of wetting agent (Q2-5211
- the freshly prepared polymeric solution was coated on an anodized aluminum substrate using a wire wound rod.
- the coating was dried under hot air stream and then further cured at 120 °C for 5 minutes to produce a uniform coating film having a coating weight around 1.0 g/m 2 .
- the UV-Vis-NIR spectrum of the resulted polymer on polyester film shows a broad absorption band having a maximum at 842 nm.
- the ideal structure of the near infrared absorbing ink repelling cross-linked silicone polymer can be represented as following:
- the near infrared absorbing ink repelling cross-linked silicone polymer was prepared by adding 300 parts of water containing 1.0 part of 2-[2-[2-allyloxy-3- [2-(1 ,3-dihydro-1-allyl-3,3-dimethyl-7-sulfonyl-2H-benz[e]indol-2- ylidene)ethylidene]-1 -cyclohexene-1 -yl]ethenyl]-1 -allyl-3,3-dimethyl-7-sulfonyl- 1 H-benz[e]indolium 4-methylbenzenesulfonic acid (available from American Dye Source, Inc.) into a solution containing 50 parts of reactive silicone emulsion (Syl-Off 7910, available from Dow Corning, 40 % solid weight), 50 parts of reactive silicone emulsion with platinum catalyst (Syl-Off 7922, available from Dow Corning, 40 % solid weight) and 1.5 parts of wetting agent (Q2
- the freshly prepared polymeric solution was coated on an anodized aluminum substrate using a wire wound rod.
- the coating was dried under hot air stream and then further cured at 120 °C for 5 minutes to produce a uniform coating film having a coating weight around 1.0 g/m 2 .
- the UV-Vis-NIR spectrum of the resulted polymer on polyester film shows a broad absorption band having a maximum at 837 nm.
- the ideal structure of the near infrared absorbing ink repelling cross-linked silicone polymer can be represented as following:
- the near infrared absorbing ink repelling cross-linked silicone polymer was prepared by adding a solution containing 10 parts of methyl ethyl ketone dissolving with 0.10 parts of 2-[2-[2-allyloxy-3-[2-(1 ,3-dihydro-1-heptyl-3,3- dimethyl-2H-benz[e]indol-2-ylidene)ethylidene]-1 -cyclohexene-1-yl]ethenyl]-1- heptyl)-3,3-dimethyl-1 H-benz[e]indolium 4-methyl benzenesulfonate (available from American Dye Source, Inc.) into a solution containing 2.0 parts of polydimethylsiloxane divinyl terminated (PS445, availble from United Chemical), 1.0 part of high molecular weight polydimethylsiloxane divinyl terminated (PS225, availble from United Chemical), 1.0 part of polyhydromethylsiloxane
- the freshly prepared polymeric solution was coated on an anodized aluminum substrate using a wire wound rod.
- the coating was dried under hot air stream and then further cured at 120°C for 5 minutes to produce a uniform coating film having a coating weight around 1.0 g/m 2 .
- the UV-Vis-NIR spectrum of the resulted polymer on polyester film shows a broad absorption band having a maximum at 835 nm.
- the ideal structure of the near infrared absorbing ink repelling cross-linked silicone polymer can be represented as following:
- the near infrared absorbing ink repelling cross-linked silicone polymer was prepared similarly to that of Example 4, excepted that 2-[2-[2-dodecyloxy-3-[2- (1 ,3-dihydro-1-allyl-3,3-dimethyl-2H-benz[e]indol-2-ylidene)ethylidene]-1- cyclohexene-1 -yl]ethenyl]-1 -allyl-3,3-dimethyl-1 H-benz[e]indolium 4-methyl benzenesulfonate (available from American Dye Source, Inc.) was used to replace 2-[2-[2-[2-allyloxy-3-[2-(1 ,3-dihydro-1-heptyl-3,3-dimethyl-2H- benz[e]indol-2-ylidene)ethylidene]-1 -cyclohexene-1 -yl]ethenyl]-1 -heptyl-3,
- the freshly prepared polymeric solution was coated on an anodized aluminum substrate using a wire wound rod.
- the coating was dried under hot air stream and then further cured at 120°C for 5 minutes to produce a uniform coating film having a coating weight around 1.0 g/m 2 .
- the UV-Vis-NIR spectrum of the resulted polymer on polyester film shows a broad absorption band having a maximum at 829 nm.
- the ideal structure of the near infrared absorbing ink repelling cross-linked silicone polymer can be represented as following:
- the near infrared absorbing ink repelling cross-linked silicone polymer was prepared similarly to that of Example 4, excepted that 2-[2-[2-dodecyloxy-4- fert-butyl-3-[2-(1 ,3-dihydro-1-allyl-3,3-dimethyl-2H-benz[e]indol-2-ylidene) ethylidene]-1 -cyclohexene-1 -yl]ethenyl]-1 -allyl-3,3-dimethyl-1 H- benz[e]indolium 4-methyl benzenesulfonate (available from American Dye Source, Inc.) was used to replace 2-[2-[2-[2-allyloxy-3-[2-(1 ,3-dihydro-1-heptyl- 3, 3-dimethyl-2H-benz[e]indol-2-ylidene)ethylidene]-1 -cyclohexene-1 - yl]etheny
- the freshly prepared polymeric solution was coated on an anodized aluminum substrate using a wire wound rod.
- the coating was dried under hot air stream and then further cured at 120°C for 5 minutes to produce a uniform coating film having a coating weight around 1.0 g/m 2 .
- the UV-Vis-NIR spectrum of the resulted polymer on polyester film shows a broad absorption band having a maximum at 829 nm.
- the ideal structure of the near infrared absorbing ink repelling cross-linked silicone polymer can be represented as follows:
- the near infrared absorbing ink repelling cross-linked silicone polymer was prepared similarly to that of Example 4, excepted that 2-[2-[2-allyloxy-3-[2- (1 ,3-dihydro-1 -(octyl-8-ene)-3,3-d ⁇ methyl-2H-benz[e] ⁇ ndol-2- yl ⁇ dene)ethyl ⁇ dene]-1 -cyclohexene-1 -yl]ethenyl]-1 -(octyl-8-ene)-3,3-d ⁇ methyl- 1 H-benz[e] ⁇ ndol ⁇ um 4-methylbenzenesulfonate (available from American Dye Source, Inc ) was used to replace 2-[2-[2-allyloxy-3-[2-(1 ,3-d ⁇ hydro-1-heptyl- 3, 3-d ⁇ methyl-2H-benz[e] ⁇ ndol-2-yl ⁇ dene)ethyi ⁇ dene]-1 -cyclohexene-1 -
- a waterless printing plate was prepared by dissolving 10.0 parts of ADS-001 - CTP from Example 1 in 90.0 parts of solvent system containing 35 % methoxyethanol, 30 % methyl ethyl ketone and 35 % methanol.
- the near infrared absorption polymeric solution was filtered to remove any solid residues. It was than coated on an anodized aluminum substrate using a wire- wound rod and dried under hot air stream at 80 °C for 5 minutes to produce a uniform coating having a coating weight at around 1.5 g/m 2 .
- the solution of near infrared absorbing ink repelling cross-linked silicone polymer was prepared similarly to Example 6.
- the plate was then coated on the near infrared absorbing adhesion ink promoting layer using a wire-wound rod.
- the coating was dried under hot air stream and cured at 120 °C for 5 minutes to produce a uniform coating having a coating weight at around 1.0 g/m 2 .
- the plate was imaged with a home-built laser image-setter, which was equipped with an aluminum drum, a single beam 1 watt solid state diode laser emitting at 830 nm (available from Optopower) at energy density between 200 and 800 mJ/cm 2 .
- the plate was tested on an AB Dick press with Sun Chemical Drilith "H" Cyan Ink (available from Sun Chemical) in the absence of fountain solution. Before printing, the debris at the exposed area was gently cleaned with a cotton cloth wetted with soap water. The exposed area produced high optical printing image while the non-exposed area remained clean.
- the plate can be printed to more than 10,000 copies without deterioration.
- EXAMPLE 14 A waterless printing plate was prepared similarly to the procedure of Example 13, excepted that the near infrared absorbing ink repelling cross-linked silicone polymer layer prepared similarly to Example 7 (i.e., ADS-002-Si) was used to coated on the near infrared absorbing adhesion promoting layer using a wire-wound rod. The coating was dried under hot air and cured at 120 °C for 5 minutes to produce a uniform coating having a coating weight af around 1.0 g/m 2 .
- the near infrared absorbing ink repelling cross-linked silicone polymer layer prepared similarly to Example 7 (i.e., ADS-002-Si) was used to coated on the near infrared absorbing adhesion promoting layer using a wire-wound rod.
- the coating was dried under hot air and cured at 120 °C for 5 minutes to produce a uniform coating having a coating weight af around 1.0 g/m 2 .
- the plate was imaged with a home-built laser image-setter, which was equipped with an aluminum drum, a single beam 1 watt solid state diode laser emitting at 830 nm (available from Optopower) at energy density between 200 and 800 mJ/cm 2 .
- the plate was tested on an AB Dick press with Sun Chemical Drilith "H" Cyan Ink (available from Sun Chemical) in the absence of fountain solution. Before printing, the debris at the exposed area was gently cleaned with a cotton cloth wetted with soap water. The exposed area produced high optical printing image while the non-exposed area remained clean.
- the plate can be printed to more than 10,000 copies without deterioration.
- EXAMPLE 15 A waterless printing plate was prepared similarly to the procedure of Example 13, excepted that the near infrared absorbing ink repelling cross-linked silicone polymer layer prepared similarly to Example 8 (i.e., ADS-003-Si) was used to coated on the near infrared absorbing adhesion promoting layer using a wire-wound rod. The coating was dried under hot air and cured at 120 °C for 5 minutes to produce a uniform coating having a coating weight at around 1.0 g/m 2 .
- the near infrared absorbing ink repelling cross-linked silicone polymer layer prepared similarly to Example 8 i.e., ADS-003-Si
- the coating was dried under hot air and cured at 120 °C for 5 minutes to produce a uniform coating having a coating weight at around 1.0 g/m 2 .
- the plate was imaged with a home-built laser image-setter, which was equipped with an aluminum drum, a single beam 1 watt solid state diode laser emitting at 830 nm (available from Optopower) at energy density between 200 and 800 mJ/cm 2 .
- the plate was tested on an AB Dick press with Sun Chemical Drilith "H” Ink (available from Sun Chemical) in the absence of fountain solution. Before printing, the debris at the exposed area was gently cleaned with a cotton cloth wetted with soap water. The exposed area produced high optical printing image while the non-exposed area remained clean.
- the plate can be printed to more than 10,000 copies without deterioration.
- EXAMPLE 16 A waterless printing plate was prepared similarly to the procedure of Example 13, excepted that the near infrared absorbing ink repelling cross-linked silicone polymer obtained similarly to Example 9 (i.e., ADS-004-Si) was used to coat on the near infrared absorbing adhesion promoting layer using a wire- wound rod. The coating was dried under hot air and cured at 120 °C for 5 minutes to produce a uniform coating having a coating weight at around 1.0 g/m 2 .
- the near infrared absorbing ink repelling cross-linked silicone polymer obtained similarly to Example 9 (i.e., ADS-004-Si) was used to coat on the near infrared absorbing adhesion promoting layer using a wire- wound rod.
- the coating was dried under hot air and cured at 120 °C for 5 minutes to produce a uniform coating having a coating weight at around 1.0 g/m 2 .
- the plate was imaged with a home-built laser image-setter, which was equipped with an aluminum drum, a single beam 1 watt solid state diode laser emitting at 830 nm (available from Optopower) at energy density between 200 and 800 mJ/cm 2 .
- the plate was tested on an AB Dick press with Sun Chemical Drilith "H" Cyan Ink (available from Sun Chemical) in the absence of fountain solution. Before printing, the debris at the exposed area was gently cleaned with a cotton cloth wetted with soap water. The exposed area produced high optical printing image while the non-exposed area remained clean.
- the plate can be printed to more than 10,000 copies without deterioration.
- EXAMPLE 17 A waterless printing plate was prepared similarly to the procedure of Example 13, excepted that the near infrared absorbing ink repelling cross-linked silicone polymer obtained similarly to Example 12 (i.e., ADS-007-Si) was used to coat on the near infrared absorbing adhesion promoting layer using a wire- wound rod. The coating was dried under hot air and cured at 120 °C for 5 minutes to produce a uniform coating having a coating weight at around 1.0 g/m 2 .
- the near infrared absorbing ink repelling cross-linked silicone polymer obtained similarly to Example 12 i.e., ADS-007-Si
- the coating was dried under hot air and cured at 120 °C for 5 minutes to produce a uniform coating having a coating weight at around 1.0 g/m 2 .
- the plate was imaged with a home-built laser image-setter, which was equipped with an aluminum drum, a single beam 1 watt solid state diode laser emitting at 830 nm (available from Optopower) at energy density between 200 and 800 mJ/cm 2 .
- the plate was tested on an AB Dick press with Sun Chemical Drilith "H" Cyan Ink (available from Sun Chemical) in the absence of fountain solution. Before printing, the debris at the exposed area was gently cleaned with a cotton cloth wetted with soap water. The exposed area produced high optical printing image while the non-exposed area remained clean.
- the plate can be printed to more than 10,000 copies without deterioration.
- EXAMPLE 18 A waterless printing plate was prepared similarly to Example 15, excepted that the near infrared absorbing polymer obtained from Example 3 (i.e., ADS- 003-CTP) was used to prepare the near infrared adhesion promoting layer.
- the plate was imaged with a home-built laser image-setter, which was equipped with an aluminum drum, a single beam 1 watt solid state diode laser emitting at 830 nm (available from Optopower) at energy density between 200 and 800 mJ/cm 2 .
- the plate was tested on an AB Dick duplicator press with Sun Chemical Drilith "H" Cyan Ink (available from Sun Chemical) in the absence of fountain solution. Before printing, the debris at the exposed area was gently cleaned with a cotton cloth wetted with soap water. The exposed area produced high optical printing image while the non-exposed area remained clean.
- the plate can be printed to more than 10,000 copies without deterioration.
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Thermal Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Printing Plates And Materials Therefor (AREA)
- Materials For Photolithography (AREA)
- Paints Or Removers (AREA)
- Heat Sensitive Colour Forming Recording (AREA)
- Laminated Bodies (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA2279299 | 1999-07-29 | ||
CA002279299A CA2279299C (en) | 1999-07-29 | 1999-07-29 | Thermal waterless lithographic printing plates |
PCT/CA2000/000797 WO2001008885A1 (en) | 1999-07-29 | 2000-07-04 | Thermal waterless lithographic printing plates |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1214197A1 true EP1214197A1 (en) | 2002-06-19 |
EP1214197B1 EP1214197B1 (en) | 2004-06-09 |
Family
ID=4163899
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00945482A Expired - Lifetime EP1214197B1 (en) | 1999-07-29 | 2000-07-04 | Thermal waterless lithographic printing plates |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP1214197B1 (en) |
AT (1) | ATE268692T1 (en) |
AU (1) | AU5957400A (en) |
CA (1) | CA2279299C (en) |
DE (1) | DE60011448T2 (en) |
ES (1) | ES2222911T3 (en) |
WO (1) | WO2001008885A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2003004281A1 (en) * | 2001-07-02 | 2003-01-16 | Alcoa Inc. | Printing plate with dyed and anodized surface |
US8875629B2 (en) | 2010-04-09 | 2014-11-04 | Presstek, Inc. | Ablation-type lithographic imaging with enhanced debris removal |
BR112017003349B1 (en) | 2014-08-22 | 2022-12-20 | Fujifilm Corporation | COMPOUND, COLOR DEVELOPMENT COMPOSITION, LITHOGRAPHIC PRINTING PLATE PRECURSOR AND METHOD FOR PRODUCING PLATE FOR LITHOGRAPHIC PRINTING PLATE |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ZA967894B (en) * | 1995-09-22 | 1997-04-07 | Sun Chemical Corp | Compositions and solventless process for digital laser imagable lithographic printing plate production |
US5919600A (en) * | 1997-09-03 | 1999-07-06 | Kodak Polychrome Graphics, Llc | Thermal waterless lithographic printing plate |
EP0908779B1 (en) * | 1997-10-08 | 2002-06-19 | Agfa-Gevaert | A method for making positive working printing plates from a heat mode sensitive imaging element |
-
1999
- 1999-07-29 CA CA002279299A patent/CA2279299C/en not_active Expired - Fee Related
-
2000
- 2000-07-04 AU AU59574/00A patent/AU5957400A/en not_active Abandoned
- 2000-07-04 AT AT00945482T patent/ATE268692T1/en not_active IP Right Cessation
- 2000-07-04 WO PCT/CA2000/000797 patent/WO2001008885A1/en active IP Right Grant
- 2000-07-04 EP EP00945482A patent/EP1214197B1/en not_active Expired - Lifetime
- 2000-07-04 ES ES00945482T patent/ES2222911T3/en not_active Expired - Lifetime
- 2000-07-04 DE DE60011448T patent/DE60011448T2/en not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO0108885A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO2001008885A1 (en) | 2001-02-08 |
CA2279299A1 (en) | 2001-01-29 |
ATE268692T1 (en) | 2004-06-15 |
DE60011448D1 (en) | 2004-07-15 |
ES2222911T3 (en) | 2005-02-16 |
EP1214197B1 (en) | 2004-06-09 |
DE60011448T2 (en) | 2005-06-23 |
CA2279299C (en) | 2008-11-25 |
AU5957400A (en) | 2001-02-19 |
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