WO2006037716A1 - Method of making lithographic printing plates - Google Patents
Method of making lithographic printing plates Download PDFInfo
- Publication number
- WO2006037716A1 WO2006037716A1 PCT/EP2005/054585 EP2005054585W WO2006037716A1 WO 2006037716 A1 WO2006037716 A1 WO 2006037716A1 EP 2005054585 W EP2005054585 W EP 2005054585W WO 2006037716 A1 WO2006037716 A1 WO 2006037716A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- recording layer
- coating
- image
- acid
- image recording
- Prior art date
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- 229920001282 polysaccharide Polymers 0.000 description 1
- 239000005017 polysaccharide Substances 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 229920000123 polythiophene Polymers 0.000 description 1
- 229920002689 polyvinyl acetate Polymers 0.000 description 1
- 239000011118 polyvinyl acetate Substances 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 159000000001 potassium salts Chemical class 0.000 description 1
- UORVCLMRJXCDCP-UHFFFAOYSA-N propynoic acid Chemical compound OC(=O)C#C UORVCLMRJXCDCP-UHFFFAOYSA-N 0.000 description 1
- 235000019423 pullulan Nutrition 0.000 description 1
- 150000003222 pyridines Chemical class 0.000 description 1
- 150000003242 quaternary ammonium salts Chemical class 0.000 description 1
- 150000003248 quinolines Chemical class 0.000 description 1
- 238000009877 rendering Methods 0.000 description 1
- 230000001846 repelling effect Effects 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000001509 sodium citrate Substances 0.000 description 1
- 229940079839 sodium dehydroacetate Drugs 0.000 description 1
- 235000019259 sodium dehydroacetate Nutrition 0.000 description 1
- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 description 1
- GCLGEJMYGQKIIW-UHFFFAOYSA-H sodium hexametaphosphate Chemical compound [Na]OP1(=O)OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])O1 GCLGEJMYGQKIIW-UHFFFAOYSA-H 0.000 description 1
- 235000019982 sodium hexametaphosphate Nutrition 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 229910052911 sodium silicate Inorganic materials 0.000 description 1
- 235000019832 sodium triphosphate Nutrition 0.000 description 1
- DSOWAKKSGYUMTF-GZOLSCHFSA-M sodium;(1e)-1-(6-methyl-2,4-dioxopyran-3-ylidene)ethanolate Chemical compound [Na+].C\C([O-])=C1/C(=O)OC(C)=CC1=O DSOWAKKSGYUMTF-GZOLSCHFSA-M 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000004334 sorbic acid Substances 0.000 description 1
- 235000010199 sorbic acid Nutrition 0.000 description 1
- 229940075582 sorbic acid Drugs 0.000 description 1
- 239000012798 spherical particle Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000008117 stearic acid Substances 0.000 description 1
- 150000003890 succinate salts Chemical class 0.000 description 1
- SEEPANYCNGTZFQ-UHFFFAOYSA-N sulfadiazine Chemical compound C1=CC(N)=CC=C1S(=O)(=O)NC1=NC=CC=N1 SEEPANYCNGTZFQ-UHFFFAOYSA-N 0.000 description 1
- 150000003460 sulfonic acids Chemical class 0.000 description 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 229940042055 systemic antimycotics triazole derivative Drugs 0.000 description 1
- 239000003760 tallow Substances 0.000 description 1
- GVZXZHWIIXHZOB-UHFFFAOYSA-N tariric acid Chemical compound CCCCCCCCCCCC#CCCCCC(O)=O GVZXZHWIIXHZOB-UHFFFAOYSA-N 0.000 description 1
- GDBJCCBRRCYCEG-UHFFFAOYSA-N tariric acid Natural products CCCCCCCCCCCCC#CCCCC(O)=O GDBJCCBRRCYCEG-UHFFFAOYSA-N 0.000 description 1
- 239000011975 tartaric acid Substances 0.000 description 1
- 235000002906 tartaric acid Nutrition 0.000 description 1
- 229960001367 tartaric acid Drugs 0.000 description 1
- TUNFSRHWOTWDNC-HKGQFRNVSA-N tetradecanoic acid Chemical compound CCCCCCCCCCCCC[14C](O)=O TUNFSRHWOTWDNC-HKGQFRNVSA-N 0.000 description 1
- 239000001577 tetrasodium phosphonato phosphate Substances 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 150000003626 triacylglycerols Chemical class 0.000 description 1
- 125000005270 trialkylamine group Chemical group 0.000 description 1
- ZIBGPFATKBEMQZ-UHFFFAOYSA-N triethylene glycol Chemical compound OCCOCCOCCO ZIBGPFATKBEMQZ-UHFFFAOYSA-N 0.000 description 1
- HRXKRNGNAMMEHJ-UHFFFAOYSA-K trisodium citrate Chemical compound [Na+].[Na+].[Na+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O HRXKRNGNAMMEHJ-UHFFFAOYSA-K 0.000 description 1
- 229940038773 trisodium citrate Drugs 0.000 description 1
- 238000002211 ultraviolet spectrum Methods 0.000 description 1
- ZTWTYVWXUKTLCP-UHFFFAOYSA-N vinylphosphonic acid Chemical compound OP(O)(=O)C=C ZTWTYVWXUKTLCP-UHFFFAOYSA-N 0.000 description 1
- NLVXSWCKKBEXTG-UHFFFAOYSA-N vinylsulfonic acid Chemical compound OS(=O)(=O)C=C NLVXSWCKKBEXTG-UHFFFAOYSA-N 0.000 description 1
- 238000011179 visual inspection Methods 0.000 description 1
- 239000008096 xylene 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
- B41C1/1025—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 using materials comprising a polymeric matrix containing a polymeric particulate material, e.g. hydrophobic heat coalescing particles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/26—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used
- B41M5/36—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used using a polymeric layer, which may be particulate and which is deformed or structurally changed with modification of its' properties, e.g. of its' optical hydrophobic-hydrophilic, solubility or permeability properties
- B41M5/366—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used using a polymeric layer, which may be particulate and which is deformed or structurally changed with modification of its' properties, e.g. of its' optical hydrophobic-hydrophilic, solubility or permeability properties using materials comprising a polymeric matrix containing a polymeric particulate material, e.g. hydrophobic heat coalescing particles
-
- 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
- B41C2201/00—Location, type or constituents of the non-imaging layers in lithographic printing formes
- B41C2201/14—Location, type or constituents of the non-imaging layers in lithographic printing formes characterised by macromolecular organic compounds, e.g. binder, adhesives
-
- 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
- B41C2210/06—Developable by an alkaline 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
- B41C2210/10—Developable by an acidic 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
- B41C2210/22—Preparation or type or constituents of the imaging layers, in relation to lithographic printing forme preparation characterised by organic non-macromolecular additives, e.g. dyes, UV-absorbers, plasticisers
-
- 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
Definitions
- the present invention relates to a method for making a lithographic printing plate whereby a printing plate precursor, having an improved sensitivity, is image-wise exposed and developed with a gum solution.
- a so-called printing master such as a printing plate is mounted on a cylinder of the printing press.
- the master carries a lithographic image on its surface and a printed copy is obtained by applying ink to said image and then transferring the ink from the master onto a receiver material, which is typically paper.
- ink as well as an aqueous fountain solution (also called dampening liquid) are supplied to the lithographic image which consists of oleophilic (or hydrophobic, i.e. ink-accepting, water-repelling) areas as well as hydrophilic (or oleophobic, i.e. water-accepting, ink-repelling) areas.
- driographic the lithographic image consists of ink-accepting and ink-abhesive (ink- repelling) areas and during driographic printing, only ink is supplied to the master.
- Printing masters are generally obtained by the so-called computer-to-film (CtF) method wherein various pre-press steps such as typeface selection, scanning, color separation, screening, trapping, layout and imposition are accomplished digitally and each color selection is transferred to graphic arts film using an image ⁇ setter.
- CtF computer-to-film
- the film can be used as a mask for the exposure of an imaging material called plate precursor and after plate processing, a printing plate is obtained which can be used as a master.
- the so-called ⁇ computer-to-plate' (CtP) method has gained a lot of interest. This method, also called ⁇ direct-to-plate' , bypasses the creation of film because the digital document is transferred directly to a plate precursor by means of a so-called plate-setter.
- thermal plates which are sensitive to heat or infrared light, are widely used in computer-to-plate methods because of their daylight stability.
- Such thermal materials may be exposed directly to heat, e.g. by means of a thermal head, but preferably comprise a compound that converts absorbed light into heat and are therefore suitable for exposure by lasers, especially infrared laser diodes.
- the heat which is generated on image-wise exposure, triggers a (physico-) chemical process, such as ablation, polymerization, insolubilization by cross-linking of a polymer, decomposition, or particle coagulation of a thermoplastic polymer latex, and after optional processing, a lithographic image is obtained.
- Many thermal plate materials are based on heat-induced ablation.
- a problem associated with ablative plates is the generation of debris which is difficult to remove and may disturb the printing process or may contaminate the exposure optics of the plate-setter. As a result, such ablative plates require a processing step for removing the debris from the exposed material.
- EP 1 075 941 discloses a radiation-sensitive printing plate precursor wherein a photo-heat conversion agent is incorporated and wherein the photo-heat conversion agent is a particulate metal oxide comprising an organic photo-heat conversion compound encapsulated therein.
- US 4,841,040 discloses a novel phosphated, oxidized starch having a molecular weight of about 1,500 to about 40,000 Daltons, a carboxyl degree of substitution of 0.30 to 0.96, and a phosphate degree of substitution of from about 0.002 to about 0.005, which is useful as a replacement for gum arabic in gumming and fountain solutions for lithography.
- US 4,245,031 discloses photopolymerizable compositions containing a polymer having a plurality of salt-forming groups, two specific ethylenically unsaturated compounds and a radiation- sensitive, free-radical generating system.
- the compositions provide photopolymerizable elements which have outstanding photospeeds and are relatively insensitive to oxygen.
- EP 770 497 discloses a method wherein an imaging material comprising an image-recording layer of a hydrophilic binder, a compound capable of converting light to heat and hydrophobic thermoplastic polymer particles, is image-wise exposed, thereby inducing coalescence of the polymer particles and converting the image-recording layer into an hydrophobic phase which defines the printing areas of the printing master. Subsequently the image-wise exposed precursor is developed by rinsing it with plain water or an aqueous liquid.
- EP 514 145 discloses a radiation-sensitive plate which comprises a coating comprising core-shell particles having a water insoluble heat softenable core component and a shell component which is soluble or swellable in aqueous alkaline medium.
- the radiation causes selected particles to coalescence, at least partially, to form an image and the non-coalesced particles are then selectively removed by means of an aqueous alkaline developer.
- a lithographic printing plate precursor which comprises on a hydrophilic support a coating comprising an image-recording layer which comprises hydrophobic thermoplastic polymer particles having an average particle size ranging from 45 to 63 nm and wherein the amount of thermoplastic polymer particles is at least 70 % by weight relative to the image-recording layer.
- the precursors are developed with an alkaline developing solution whereby the non-image areas of the coating are removed.
- EP 1 342 568 discloses a method wherein an imaging material comprising an image-recording layer of a hydrophilic binder, a compound capable of converting light to heat and hydrophobic thermoplastic polymer particles, is image-wise exposed, thereby inducing coalescence of the polymer particles and converting the image-recording layer into an hydrophobic phase which defines the printing areas of the printing master. Subsequently the image-wise exposed precursor is processed with a gum solution, thereby developing and gumming the plate in a single step.
- the image-recording layer at the non- exposed areas is removed with the gum solution from the support, revealing the hydrophilic surface of the support, also called
- a plate system :AZURA (trademark from AGFA) , that works according to the above mechanism, has been introduced to the market in May 2004.
- a problem associated with this printing plate precursor is the low sensitivity, i.e. the plate precursor needs a higher energy dose on image-wise exposure to obtain a sufficient coalescence of the polymer particles such that the non-exposed areas can be removed by the gum solution without affecting the exposed areas. This implies the plate requires a longer exposure time and/or a higher power laser, resulting in a lower speed. If a printing plate precursor is exposed with an energy dose which is too low in relation with its sensitivity, a lower quality for the lithographic printing properties can be obtained. This lower quality may result in a lower resolution, i.e.
- the precursor with the reduced sensitivity is not capable of rendering fine dots of a high resolution screen after exposure with the lower energy dose and after developing with a gum solution.
- the run length of the plate may be reduced as a result of a too low energy dose in relation with the sensitivity of the precursor due to an insufficient coalescence of the polymer particles in the exposed areas.
- the hydrophobic-hydrophilic differentiation in the coating is sufficient such that an excellent clean-out can be obtained, i.e. the non-exposed areas are completely removed from the support revealing the hydrophilic surface without affecting the exposed areas .
- An insufficient clean-out may further result in toning on the press, i.e. an undesirable increased tendency of ink-acceptance in the non-image areas .
- this object is realized by the method of preparing a lithographic printing plate comprising the steps of
- a coating comprising an image recording layer, said layer comprising hydrophobic thermoplastic polymer particles and a hydrophilic binder, said coating further comprising a pigment, present in said image recording layer or in an additional layer of said coating, - image-wise exposing said coating, thereby inducing coalescence of the thermoplastic polymer particles at the exposed areas of the image recording layer,
- said hydrophobic thermoplastic polymer particles have an average particle size between 40 nm and 63 nm, wherein the amount of the hydrophobic thermoplastic polymer particles in the image recording layer is more than 70 % and less than 85 % by weight, relative to the image recording layer, and wherein said pigment has a hydrophilic surface and provides a visible image after image-wise exposing and developing with the gum solution.
- the lithographic printing plate precursor used in the method of the present invention is negative-working and develops a lithographic image consisting of hydrophobic and hydrophilic areas at the exposed and non-exposed areas respectively.
- the hydrophobic areas and the hydrophilic areas are respectively defined by the coating and by the support, which has a hydrophilic surface or is provided with a hydrophilic layer.
- the support may be a sheet-like material such as a plate or it may be a cylindrical element such as a sleeve which can be slid around a print cylinder of a printing press.
- the support is a metal support such as aluminum or stainless steel.
- a particularly preferred lithographic support is a grained and anodized aluminum support. Graining an anodizing of aluminum supports is well known.
- the grained aluminum support used in the material of the present invention is preferably an electrochemically grained support.
- the acid used for graining can be e.g. nitric acid or sulfuric acid.
- the acid used for graining preferably comprises hydrogen chloride. Also mixtures of e.g. hydrogen chloride and acetic acid can be used.
- electrochemical graining and anodizing parameters such as electrode voltage, nature and concentration of the acid electrolyte or power consumption on the one hand and the obtained lithographic quality in terms of Ra
- the anodized aluminum support may be subject to a so-called post-anodic treatment to improve the hydrophilic properties of its surface.
- the aluminum support may be silicated by treating its surface with a sodium silicate solution at elevated temperature, e.g. 95 0 C.
- a phosphate treatment may be applied which involves treating the aluminum oxide surface with a phosphate solution that may further contain an inorganic fluoride.
- the aluminum oxide surface may be rinsed with a citric acid or citrate solution. This treatment may be carried out at room temperature or may be carried out at a slightly elevated temperature of about 30 to 50 0 C.
- a further interesting treatment involves rinsing the aluminum oxide surface with a bicarbonate solution.
- the aluminum oxide surface may be treated with polyvinylphosphonic acid, polyvinylmethylphosphonic acid, phosphoric acid esters of polyvinyl alcohol, polyvinylsulfonic acid, polyvinylbenzenesulfonic acid, sulfuric acid esters of polyvinyl alcohol, and acetals of polyvinyl alcohols formed by reaction with a sulfonated aliphatic aldehyde.
- the support can also be a flexible support, which may be provided with a hydrophilic layer, hereinafter called ⁇ base layer' .
- the flexible support is e.g. paper, plastic film or aluminum.
- Preferred examples of plastic film are polyethylene terephthalate film, polyethylene naphthalate film, cellulose acetate film, polystyrene film, polycarbonate film, etc.
- the plastic film support may be opaque or transparent.
- the base layer is preferably a cross-linked hydrophilic layer obtained from a hydrophilic binder cross-linked with a hardening agent such as formaldehyde, glyoxal, polyisocyanate or a hydrolyzed tetra-alkylorthosilicate.
- a hardening agent such as formaldehyde, glyoxal, polyisocyanate or a hydrolyzed tetra-alkylorthosilicate.
- the thickness of the hydrophilic base layer may vary in the range of 0.2 to 25 ⁇ m and is preferably 1 to 10 ⁇ m. More details of preferred embodiments of the base layer can be found in e.g. EP-A 1 025 992.
- the coating provided on the support comprises an image- recording layer which contains hydrophobic thermoplastic polymer particles .
- the hydrophobic polymer particles have a number average particle size between 40 nm and 63 nm, preferably between 45 nm and 63 nm, more preferably between 45 nm and 59 nm.
- the particle size is defined as the particle diameter, measured by Photon Correlation Spectrometry, also known as Quasi-Elastic or Dynamic Light-Scattering. This technique is a convenient method for measuring the particle size and the values of the measured particle size match well with the particle size measured with transmission electronic microscopy (TEM) as disclosed by Stanley D. Duke et al.
- TEM transmission electronic microscopy
- the average particle size can be measured with a Brookhaven BI-90 analyzer, commercially available from Brookhaven Instrument Company, Holtsville, NY,USA.
- the amount of hydrophobic thermoplastic polymer particles contained in the image-recording layer is more than 70 wt.% and less than 85 wt.%, preferably between 75 wt.% and 84 wt.%, more preferably between 77 wt.% and 83 wt.%.
- the hydrophobic thermoplastic polymer particle comprises a hydrophobic polymer.
- suitable hydrophobic polymers are e.g. polyethylene, poly(vinyl chloride), poly(methyl (meth) acrylate) , poly(ethyl (meth) acrylate) , poly(vinylidene chloride), poly(meth) acrylonitrile, poly(vinyl carbazole) , polystyrene or copolymers thereof.
- Polystyrene and poly(meth) acrylonitrile or their derivatives are highly preferred embodiments.
- the polymer comprises at least 50 wt.% of polystyrene, and more preferably at least 60 wt.% of polystyrene.
- the polymer preferably comprises at least 5 wt.%, more preferably at least 30 wt.% of nitrogen containing monomeric units or of units which correspond to monomers that are characterized by a solubility parameter larger than 20, such as (meth) acrylonitrile. Suitable examples of such nitrogen containing monomeric units are disclosed in EP-A 1 219 416.
- the polymer is a copolymer consisting essentially of styrene and acrylonitrile units in a weight ratio between 1:1 and 5:1 (styrene:acrylonitrile) , e.g. in a 2:1 ratio.
- the weight average molecular weight of the thermoplastic polymer particles may range from 5,000 to 1,000,000 g/mol.
- the hydrophobic thermoplastic polymer particles are present as a dispersion in an aqueous coating liquid of the image-recording layer and may be prepared by the methods disclosed in US 3,476,937.
- Another method especially suitable for preparing an aqueous dispersion of the thermoplastic polymer particles comprises: dissolving the hydrophobic thermoplastic polymer in an organic water immiscible solvent, dispersing the thus obtained solution in water or in an aqueous medium and removing the organic solvent by evaporation.
- the image-recording layer further comprises a hydrophilic binder.
- hydrophilic binders are homopolymers and copolymers of vinyl alcohol, acrylamide, methylol acrylamide, methylol methacrylamide, acrylic acid, methacrylic acid, hydroxyethyl acrylate, hydroxyethyl methacrylate or maleic anhydride/vinylmethylether copolymers.
- the image-recording layer has preferably a coating weight between 2 2
- the coating may comprise, beside the image recording layer, one or more additional layer (s) .
- additional layer can be e.g. an adhesion-improving layer between the image-recording layer and the support; or a light-absorbing layer comprising one or more of the above compounds that are capable of converting infrared light into heat; or a covering layer which is removed during processing with a gum solution.
- the image-recording layer or an additional layer further contains a pigment having a hydrophilic surface and providing a visible image after image-wise exposing and developing with a gum solution.
- the hydrophilicity of the surface may be formed by the presence of hydrophilic groups, such as anionic or non-ionic groups, on the surface of the pigment particle.
- a hydrophilic surface may be formed by surface treatment, coating or adsortion of compounds such as hydrophilic polymers, reactive materials (e.g. silane coupling agent, an epoxy compound, polyisocyanate, or the like) , surfactants (e.g. anionic or non-ionic surfactants) or water soluble salts (e.g. salts of phosphoric acid) .
- Typical hydrophilic polymers are polymers or copolymers having anionic groups such as carboxylic acid, sulphonic acid, phosphonic acid, phosphoric acid, or salts thereof, or having a polyalkylene oxide group such as polyethyleneoxide.
- colorants are defined in the non-published EP-A 03 103 827.
- carbon dispersions in water such as CAB O JET 200, commercially available from CABOT, are preferred, and phthalocyanine pigment dispersions in water such as CAB O JET 250, commercially available from CABOT, are most preferred.
- the image-recording layer or an additional layer may also contain other ingredients such as additional binders, surfactants, development inhibitors or accelerators, and especially an IR- absorbing agent.
- An IR-absorbing agent is a compound capable of converting infrared light into heat. Particularly useful light-to- heat converting compounds or IR-absorbing agents are for example infrared dyes, carbon black, metal carbides, borides, nitrides, carbonitrides, bronze-structured oxides, and conductive polymer dispersions such as polypyrrole, polyaniline or polythiophene dispersions .
- the coating comprises an IR-absorbing agent, more preferably the image recording layer comprises an IR-absorbing agent, and most preferably the image recording layer comprises an IR-absorbing agent in an amount of at least 6 % by weight relative to the image recording layer.
- the printing plate precursors used in the present invention are exposed to heat or to infrared light, e.g. by means of an infrared laser or LEDs .
- a laser emitting near infrared light having a wavelength in the range from about 700 to about 1500 nm is used, e.g. a semiconductor laser diode, a Nd:YAG or a Nd:YLF laser.
- the required laser power depends on the sensitivity of the image- recording layer, the pixel dwell time of the laser beam, which is determined by the spot diameter (typical value of modern plate-
- ITD plate-setters for thermal plates are typically characterized by a very high scan speed up to 500 m/sec and may require a laser power of several Watts.
- the hydrophobic thermoplastic polymer particles fuse or coagulate so as to form a hydrophobic phase which corresponds to the printing areas of the printing plate. Coagulation may result from heat-induced coalescence, softening or melting of the thermoplastic polymer particles.
- the coagulation temperature of the thermoplastic hydrophobic polymer particles there is no specific upper limit to the coagulation temperature of the thermoplastic hydrophobic polymer particles, however the temperature should be sufficiently below the decomposition temperature of the polymer particles.
- the coagulation temperature is at least 10 0 C below the temperature at which the decomposition of the polymer particles occurs.
- the coagulation temperature is preferably higher than 5O 0 C, more preferably above 100 0 C.
- the non-exposed areas of the image- recording layer are removed by supplying a gum or baking gum solution without essentially removing the exposed areas, i.e. without affecting the exposed areas to an extent that renders the ink-acceptance of the exposed areas inacceptable.
- the development by supplying a gum or baking gum may be combined with mechanical rubbing, e.g. by a rotating brush.
- the gum or baking gum solution can be applied to the plate e.g. by rubbing in with an impregnated pad, by dipping, (spin-) coating, spraying, pouring-on, either by hand or in an automatic processing apparatus. After applying the baking gum solution, the plate can be dried before baking or is dried during the baking process itself.
- the baking process can proceed at a temperature above the coagulation temperature of the thermoplastic polymer particles, e.g. between 100 0 C and 23O 0 C for a period of 5 to 40 minutes.
- the exposed and developed plates can be baked at a temperature of 23O 0 C for 5 minutes, at a temperature of 15O 0 C for 10 minutes or at a temperature of 12O 0 C for 30 minutes.
- Baking can be done in conventional hot air ovens or by irradiation with lamps emitting in the infrared or ultraviolet spectrum.
- a gum solution is typically an aqueous liquid which comprises one or more surface protective compounds that are capable of protecting the lithographic image of a printing plate against contamination, e.g. by oxidation, fingerprints, fats, oils or dust, or damaging, e.g. by scratches during handling of the plate.
- Suitable examples of such compounds are film-forming hydrophilic polymers or surfactants .
- the layer that remains on the plate after treatment with the gum solution preferably comprises between 0.1 and
- a gum solution is normally supplied as a concentrated solution which is diluted by the end user with water before use.
- all concentrations of compounds present in the gum solution are expressed as percentage by weight (wt.% or % w/w) relative to the non-diluted gum solution, unless otherwise indicated.
- Preferred polymers for use as protective compound in the gum solution are gum arabic, pullulan, cellulose derivatives such as carboxymethylcellulose, carboxyethylcellulose or methylcellulose, (cyclo)dextrin, poly(vinyl alcohol), poly(vinyl pyrrolidone) , polysaccharide, homo- and copolymers of acrylic acid, methacrylic acid or acrylamide, a copolymer of vinyl methyl ether and maleic anhydride, a copolymer of vinyl acetate and maleic anhydride or a copolymer of styrene and maleic anhydride.
- Highly preferred polymers are homo- or copolymers of monomers containing carboxylic, sulfonic or phosphonic groups or the salts thereof, e.g. (meth) acrylic acid, vinyl acetate, styrene sulfonic acid, vinyl sulfonic acid, vinyl phosphonic acid or acrylamidopropane sulfonic acid.
- surfactants for use as surface protective agent include anionic or nonionic surfactants.
- the gum solution may also comprise one or more of the above hydrophilic polymers as surface protective agent and, in addition, one or more surfactants to improve the surface properties of the coated layer.
- the surface tension of the gum solution is preferably from 40 to 50 mN/m.
- the gum solution comprises preferably an anionic surfactant, more preferably an anionic surfactant whereof the anionic group is a sulphonic acid group.
- anionic surfactant examples include aliphates, abietates, hydroxyalkanesulfonates, alkanesulfonates, dialkylsulfosuccinates, straight-chain alkylbenzenesulfonates, branched alkylbenzenesulfonates, alkylnaphthalenesulfonates, alkylphenoxypolyoxyethylenepropylsulfonates, salts of polyoxyethylene alkylsulfophenyl ethers, sodium N-methyl-N- oleyltaurates, monoamide disodium N-alkylsulfosuccinates, petroleum sulfonates, sulfated castor oil, sulfated tallow oil, salts of sulfuric esters of aliphatic alkylesters, salts of alkylsulfuric esters, sulfuric esters of polyoxyethylenealkylethers, salts of sulfuric esters of aliphatic monogly
- anionic surfactants are dialkylsulfosuccinates, salts of alkylsulfuric esters and alkylnaphthalenesulfonates .
- suitable anionic surfactants include sodium dodecylphenoxybenzene disulfonate, the sodium salt of alkylated naphthalenesulfonate, disodium methylene-dinaphtalene- disulfonate, sodium dodecyl-benzenesulfonate, sulfonated alkyl- diphenyloxide, ammonium or potassium perfluoroalkylsulfonate and sodium dioctyl-sulfosuccinate.
- nonionic surfactants include polyoxyethylene alkyl ethers, polyoxyethylene alkyl phenyl ethers, polyoxyethylene polystyryl phenyl ethers, polyoxyethylene polyoxypropylene alkyl ethers, polyoxyethylene polyoxypropylene block polymers, partial esters of glycerinaliphatic acids, partial esters of sorbitanaliphatic acid, partial esters of pentaerythritolaliphatic acid, propyleneglycolmonoaliphatic esters, partial esters of sucrosealiphatic acids, partial esters of polyoxyethylenesorbitanaliphatic acid, partial esters of polyoxyethylenesorbitolaliphatic acids, polyethyleneglycolaliphatic esters, partial esters of poly-glycerinaliphatic acids, polyoxyethylenated castor oils, partial esters of polyoxyethyleneglycerinaliphatic acids, aliphatic diethanolamides, N,N-bis-2-hydroxyalkylamine
- Two or more of the above surfactants may be used in combination.
- a combination of two or more different anionic surfactants or a combination of an anionic surfactant and a nonionic surfactant may be preferred.
- the amount of such a surfactant is not specifically limited but is preferably from 0.01 to 20 wt.%.
- the gum solution has preferably a pH from 3 to 8, more preferably between 5 and 8, most preferably between 5 and 7.
- the pH of the gum solution is usually adjusted with a mineral acid, an organic acid or an inorganic salt in an amount of from 0.01 to 2 wt.%.
- the mineral acids include nitric acid, sulfuric acid, phosphoric acid and metaphosphoric acid.
- organic acids are used as pH control agents and as desensitizing agents.
- the organic acids include carboxylic acids, sulfonic acids, phosphonic acids or salts thereof, e.g. succinates, phosphates, phosphonates, sulfates and sulfonates.
- Specific examples of the organic acid include citric acid, acetic acid, oxalic acid, malonic acid, p-toluenesulfonic acid, tartaric acid, malic acid, lactic acid, levulinic acid, phytic acid and organic phosphonic acid.
- the gum solution may also comprise an inorganic salt, preferably a mono or dibasic phosphate salt, more preferably an alkali-metal dihydrogen phosphate such as KH2PO4 or NaH2PO4.
- an inorganic salt preferably a mono or dibasic phosphate salt, more preferably an alkali-metal dihydrogen phosphate such as KH2PO4 or NaH2PO4.
- inorganic salt examples include magnesium nitrate, monobasic sodium phosphate, dibasic sodium phosphate, nickel sulfate, sodium hexametaphosphate and sodium tripolyphosphate.
- Other inorganic salts can be used as corrosion inhibiting agents, e.g. magnesium sulfate or zinc nitrate.
- the mineral acid, organic acid or inorganic salt may be used singly or in combination with one or more thereof.
- the gum solution may also comprise a mixture of an anionic surfactant and an inorganic salt.
- the anionic surfactant is preferably an anionic surfactant with a sulphonic acid group, more preferably an alkali-metal salt of a mono- or di-alkyl substituted diphenylether-sulphonic acid
- the inorganic salt is preferably a mono or dibasic phosphate salt, more preferably an alkali-metal dihydrogen phosphate, most preferably KH2PO4 or
- a wetting agent such as ethylene glycol, propylene glycol, triethylene glycol, butylene glycol, hexylene glycol, diethylene glycol, dipropylene glycol, glycerin, trimethylol propane and diglycerin may also be present in the gum solution.
- the wetting agent may be used singly or in combination with one or more thereof.
- the foregoing wetting agent is preferably used in an amount of from 1 to 25 wt.%.
- a chelate compound may be present in the gum solution. Calcium ion and other impurities contained in the diluting water can have adverse effects on printing and thus cause the contamination of printed matter.
- a chelate compound to the diluting water.
- Preferred examples of such a chelate compound include organic phosphonic acids or phosphonoalkanetricarboxylic acids.
- Specific examples are potassium or sodium salts of ethylenediaminetetraacetic acid, diethylenetriaminepentaacetic acid, triethylenetetraminehexaacetic acid, hydroxyethylethylenediaminetriacetic acid, nitrilotriacetic acid, 1-hydroxyethane-l, 1-diphosphonic acid and aminotri (methylenephosphonic acid) .
- organic amine salts are useful.
- an antiseptic and an anti-foaming agent may be present in the gum solution.
- an antiseptic include phenol, derivatives thereof, formalin, imidazole derivatives, sodium dehydroacetate, 4-isothiazoline-3-one derivatives, benzoisothiazoline-3-one, benztriazole derivatives, amidineguanidine derivatives, quaternary ammonium salts, pyridine derivatives, quinoline derivatives, guanidine derivatives, diazine, triazole derivatives, oxazole and oxazine derivatives.
- the preferred amount of such an antiseptic to be added is such that it can exert a stable effect on bacteria, fungi, yeast or the like. Though depending on the kind of bacteria, fungi and yeast, it is preferably from 0.01 to 4 wt.% relative to the gum solution in diluted form. Further, preferably, two or more antiseptics may be used in combination to exert an aseptic effect on various fungi and bacteria.
- the anti- foaming agent is preferably silicone anti-foaming agents. Among these anti-foaming agents, either an emulsion dispersion type or solubilized type anti-foaming agent may be used.
- an anti-foaming agent to be added is from 0.001 to 1.0 wt.% relative to the gum solution in diluted form.
- an ink receptivity agent may be present in the gum solution if desired.
- Examples of such an ink receptivity agent include turpentine oil, xylene, toluene, low heptane, solvent naphtha, kerosine, mineral spirit, hydrocarbons such as petroleum fraction having a boiling point of about 12O 0 C to about 25O 0 C, diester phthalates (e.g., dibutyl phthalate, diheptyl phthalate, di-n-octyl phthalate, di (2-ethylhexyl) phthalate, dinonyl phthalate, didecyl phthalate, dilauryl phthalate, butylbenzyl phthalate), aliphatic dibasic esters (e.g., dioctyl adipate, butylglycol adipate, dioctyl azelate, dibutyl sebacate, di (2- ethylhexyl) sebacate dioctyl sebacate) ,
- solvents which can be used in combination with these solvents include ketones (e.g., cyclohexanone) , halogenated hydrocarbons (e.g., ethylene dichloride) , ethylene glycol ethers (e.g., ethylene glycol monomethyl ether, ethylene glycol monophenyl ether, ethylene glycol monobutyl ether), aliphatic acids (e.g., caproic acid, enathic acid, caprylic acid, pelargonic acid, capric acid, undecylic acid, lauric acid, tridecylic acid, myristic acid, pentadecylic acid, palmitic acid, heptadecylic acid, stearic acid, nonadecanic acid, arachic acid, behenic acid, lignoceric acid, cerotic acid, heptacosanoic acid, montanic acid, melissic acid, lacceric acid, isovaleric acid) and
- the ink receptivity agent is an aliphatic acid which is liquid at a temperature of 5O 0 C, more preferably has from 5 to 25 carbon atoms, most preferably has from 8 to 21 carbon atoms.
- the ink receptivity agent may be used singly or in combination with one or more thereof.
- the ink receptivity agent is preferably used in an amount of from
- the foregoing ink receptivity agent may be present as an oil-in-water emulsion or may be solubilized with the aid of a solubilizing agent.
- the viscosity of the gum solution can be adjusted to a value of e.g. between 1.7 and 5 cP, by adding viscosity increasing compounds, such as poly(ethylene oxide), e.g. having a molecular weight between 1.7 and 5 cP, by adding viscosity increasing compounds, such as poly(ethylene oxide), e.g. having a molecular weight between 1.7 and 5 cP, by adding viscosity increasing compounds, such as poly(ethylene oxide), e.g. having a molecular weight between
- Such compounds can be present in a concentration of
- a baking gum has a similar composition as described above, with the additional preference towards compounds that do not evaporate at the usual bake temperatures .
- Specific examples of suitable baking gum solutions are described in e.g. EP-A 222 297, EP-A 1 025 992, DE-A 2 626 473 and US 4,786,581.
- a 0.30 mm thick aluminum foil was degreased by immersing the foil in an aqueous solution containing 40 g/1 of sodium hydroxide at 60 0 C for 8 seconds and rinsed with demineralized water for 2 seconds.
- the foil was then electrochemically grained during 15 seconds using an alternating current in an aqueous solution containing 12 g/1 of hydrochloric acid and 38 g/1 of aluminum sulfate (18-hydrate) at a temperature of 33 0 C and a current density
- the aluminum foil was then desmutted by etching with an aqueous solution containing 155 g/1 of sulfuric acid at 70 0 C for 4 seconds and rinsed with demineralized water at 25°C for 2 seconds.
- the foil was subsequently subjected to anodic oxidation during 13 seconds in an aqueous solution containing 155 g/1 of sulfuric acid at a
- the support thus obtained has a surface roughness Ra of 0.21 ⁇ m
- Printing plate precursors 1 and 2 were produced by applying a coating solution onto the above described lithographic substrate.
- the composition of the coating is defined in Table 1.
- the average particle sizes of the styrene/acrylonitrile copolymers were measured with a Brookhaven BI-90 analyzer, commercially available from Brookhaven Instrument Company, Holtsville, NY, USA, and are indicated in Table 2.
- the coating was applied from an aqueous
- Polymer particle is copolymer of styrene/acrylonitrile, weight ratio 60/40, stabilized with an anionic wetting agent; average particle size as defined in Table 2;
- Infrared absorbing dye IR-2 has the following structure:
- the plate precursors 1 and 2 were exposed with a Creo Trendsetter 2344T (40W) (plate-setter, trademark from CREO, Burnaby,
- the RC520 solution is an aqueous solution of the surfactant DOWFAX 3B2, commercially available from DOW CHEMICAL, in a concentration of 39.3 g/1, citric acid.laq in a concentration of 9.8 g/1, and trisodium citrate.2aq in a concentration of 32.6 g/1, and the RC520 solution has a pH-value of about 5.
- the plates were mounted on a GTO46 printing press (available from Heidelberger Druckmaschinen AG), and a print job was started using K + E Novavit 800 Skinnex ink (trademark of BASF Drucksysteme GmbH) and 3% FSlOl (trademark of AGFA) in 10% isopropanol as fountain liquid.
- the lithographic properties of the plates were determined by visual inspection of the clean-out in the non-exposed areas and the appearance of toning in the non-exposed areas on the press and by the run-length resistance (Table 2) .
- a good run lenght resistance (+) means that after 100,000 prints the 2% highlight of a 200 lpi screen was still rendered on the print.
- An insufficient run lenght resistance (-) means that after 1,000 prints breakdown of the highlight of a 200 lpi screen occurred.
- Table 2 results of run-length and sensitivity.
- the Invention Example 1 and the Comparative Example 1 show both an excellent clean-out and no toning.
- the results in Table 2 demonstrate that the Precursor 1, comprising a latex with an average particle size of 51 nm, has an improved sensitivity and a good run length.
- the Precursor 2 comprising a latex with an average particle size of 65 nm, exhibits only a high run length with high exposure energy dose and has a reduced sensitivity.
- Printing plate precursors 3 to 6 were produced by applying a coating solution onto the above described lithographic substrate.
- the composition of the coating is defined in Table 3.
- the average particle sizes of the styrene/acrylonitrile copolymers were measured with a Brookhaven BI-90 analyzer, commercially available from Brookhaven Instrument Company, Holtsville, NY, USA, and are indicated in Table 4.
- the coating was applied from an aqueous
- Polymer particle is copolymer of styrene/acrylonitrile, weight ratio 60/40, stabilized with an anionic wetting agent; average particle size as defined in Table 4;
- the plate precursors were developed in a gumming unit, using Agfa RC520 (trademark from AGFA) as gumming solution.
- the plates were mounted on a GTO46 printing press (available from Heidelberger Druckmaschinen AG), and a print job was started using K + E Novavit 800 Skinnex ink (trademark of BASF Drucksysteme GmbH) and 3% FSlOl (trademark of AGFA) in 10% isopropanol as fountain liquid.
- K + E Novavit 800 Skinnex ink trademark of BASF Drucksysteme GmbH
- 3% FSlOl trademark of AGFA
- Table 4 results of sensitivity and appearance of toning in the non-image areas of the plate.
- the printing plate precursors 7 to 12 were produced by applying a coating onto the above described lithographic substrate.
- the composition of the coating is defined in Table 5.
- the coating was applied from an aqueous coating solution and a dry coating weight of
- Polymer particle is copolymer of styrene/acrylonitrile, weight ratio 60/40, stabilized with an anionic wetting agent; average particle size 51 nm, measured with a Brookhaven BI-90 analyzer, commercially available from Brookhaven Instrument Company, Holtsville, NY, USA;
- the plate precursors 7 - 12 were exposed with a Creo Trendsetter 2344T (40W) (plate-setter, trademark from CREO, Burnaby,
- the plate precursors were developed in a gumming unit, using Agfa RC520 (trademark from AGFA) as gumming solution.
- the plates were mounted on a GTO46 printing press (available from Heidelberger Druckmaschinen AG) and a print job was started using K + E Novavit 800 Skinnex ink (trademark of BASF Drucksysteme GmbH) and 3% FSlOl (trademark from Agfa) with 10% isopropanol as fountain liquid.
- Table 6 results of sensitivity and appearance of toning in the non-image areas of the plate.
- Precursor 7 comprising 65 % wt of the latex, a sensitivity of 330
- the printing plate precursors 13 to 16 were produced in the same way as the precursors 7 to 12 with the exception that the Cab O Jet 250 is replaced by Cap O Jet 200 in the same amounts.
- the composition of the coating for the precursors 13 to 16 is defined in Table 7. The coating was applied from an aqueous coating solution onto the above described lithographic substrate, and a dry coating
- Precursor 14 75% 6% 16% 3%
- Precursor 15 83% 8% 6% 3%
- Polymer particle is copolymer of styrene/acrylonitrile, weight ratio 60/40, stabilized with an anionic wetting agent; average particle size of 51 nm, measured with a Brookhaven BI-90 analyzer, commercially available from Brookhaven Instrument Company, Holtsville, NY, USA;
- the plate precursors 13 - 16 were exposed and processed in an identical way as defined above for the precursors 7 - 12.
- the plates were mounted on a GTO46 printing press (available from Heidelberger Druckmaschinen AG) and a print job was started using K + E Novavit 800 Skinnex ink (trademark of BASF Drucksysteme GmbH) and 3% FSlOl (trademark from AGFA) with 10% isopropanol as fountain liquid.
- Table 8 results of sensitivity and appearance of toning in the non-image areas of the plate.
- Precursor 13 comprising 65 % wt of the latex, a sensitivity of 330
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- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Thermal Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Printing Plates And Materials Therefor (AREA)
- Photosensitive Polymer And Photoresist Processing (AREA)
- Materials For Photolithography (AREA)
- Manufacture Or Reproduction Of Printing Formes (AREA)
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP05789446A EP1817166B1 (en) | 2004-10-01 | 2005-09-15 | Method of making lithographic printing plates |
DE602005019088T DE602005019088D1 (en) | 2004-10-01 | 2005-09-15 | METHOD FOR PRODUCING LITHOGRAPHIC PRINTING PLATES |
JP2007533999A JP2008515014A (en) | 2004-10-01 | 2005-09-15 | Planographic printing plate manufacturing method |
CN2005800407591A CN101076448B (en) | 2004-10-01 | 2005-09-15 | Method of making lithographic printing plates |
AT05789446T ATE455647T1 (en) | 2004-10-01 | 2005-09-15 | METHOD FOR PRODUCING LITHOGRAPHY PRINTING PLATES |
US11/576,394 US20080254389A1 (en) | 2004-10-01 | 2005-09-15 | Method of Making Lithographic Printing Plates |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP04104827.3 | 2004-10-01 | ||
EP04104827 | 2004-10-01 | ||
US61769404P | 2004-10-12 | 2004-10-12 | |
US60/617,694 | 2004-10-12 |
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WO2006037716A1 true WO2006037716A1 (en) | 2006-04-13 |
Family
ID=34929644
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2005/054585 WO2006037716A1 (en) | 2004-10-01 | 2005-09-15 | Method of making lithographic printing plates |
Country Status (7)
Country | Link |
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US (1) | US20080254389A1 (en) |
EP (1) | EP1817166B1 (en) |
JP (1) | JP2008515014A (en) |
CN (1) | CN101076448B (en) |
AT (1) | ATE455647T1 (en) |
ES (1) | ES2338137T3 (en) |
WO (1) | WO2006037716A1 (en) |
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- 2005-09-15 EP EP05789446A patent/EP1817166B1/en not_active Not-in-force
- 2005-09-15 AT AT05789446T patent/ATE455647T1/en not_active IP Right Cessation
- 2005-09-15 CN CN2005800407591A patent/CN101076448B/en not_active Expired - Fee Related
- 2005-09-15 WO PCT/EP2005/054585 patent/WO2006037716A1/en active Application Filing
- 2005-09-15 US US11/576,394 patent/US20080254389A1/en not_active Abandoned
- 2005-09-15 ES ES05789446T patent/ES2338137T3/en active Active
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Publication number | Publication date |
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EP1817166B1 (en) | 2010-01-20 |
CN101076448A (en) | 2007-11-21 |
JP2008515014A (en) | 2008-05-08 |
CN101076448B (en) | 2010-12-08 |
ATE455647T1 (en) | 2010-02-15 |
US20080254389A1 (en) | 2008-10-16 |
ES2338137T3 (en) | 2010-05-04 |
EP1817166A1 (en) | 2007-08-15 |
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