EP0992342A2 - Aufzeichnungsmaterial aus einem Träger und einer auf einer Oberfläche aufgebrachten Keramikschicht - Google Patents
Aufzeichnungsmaterial aus einem Träger und einer auf einer Oberfläche aufgebrachten Keramikschicht Download PDFInfo
- Publication number
- EP0992342A2 EP0992342A2 EP99116515A EP99116515A EP0992342A2 EP 0992342 A2 EP0992342 A2 EP 0992342A2 EP 99116515 A EP99116515 A EP 99116515A EP 99116515 A EP99116515 A EP 99116515A EP 0992342 A2 EP0992342 A2 EP 0992342A2
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- EP
- European Patent Office
- Prior art keywords
- recording material
- material according
- ceramic layer
- aluminum oxide
- weight
- 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.)
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Classifications
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- 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
- B41N1/006—Printing plates or foils; Materials therefor made entirely of inorganic materials other than natural stone or metals, e.g. ceramics, carbide materials, ferroelectric materials
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- 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
- B41N3/038—Treatment with a chromium compound, a silicon compound, a phophorus compound or a compound of a metal of group IVB; Hydrophilic coatings obtained by hydrolysis of organometallic compounds
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- 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
Definitions
- the invention relates to a recording material composed of a support and one a surface of the substrate applied ceramic layer and a photosensitive Layer and a method for producing such a recording material.
- non-image areas In the case of lithographic processes, image and Non-image areas produced on a support, the non-image areas in generally hydrophilic and the image areas are generally oleophilic. Accordingly Inks made from oil are removed from the non-image areas rejected after water was applied to the substrate. Both the non-image and the image areas become one by exposure photosensitive recording layer created on the surface of the support. The exposure causes differences in solubility accordingly the image and the non-image areas.
- Backing materials for lithographic Printing plates are generally aluminum and aluminum alloys, which have a layer of aluminum oxide on their surface and a photosensitive recording layer applied thereon.
- the aluminum oxide layer is by an oxidation process, which is generally electrochemical expires, manufactured.
- the surface of the aluminum support cleaned, followed by an etching process that covers the surface of the aluminum support provided with a textured layer, the surface of the support is enlarged, which in turn strengthens the bond between the carrier and the Recording layer determined. Furthermore, the textured surface water retention increases.
- a Aluminum substrate of a lithographic printing plate by in-situ formed To coat aluminum hydroxide the coating of particulate Material has an average particle size of 0.05 to 3000 microns and the particulate material prior to in situ formation of the aluminum hydroxy oxide is applied to the substrate.
- the particulate material for example from the group titanium dioxide, zinc oxide, ⁇ -iron (III) oxide, barium titanate, Alumina, ceria and zirconia selected.
- the particulate material is formed by in-situ Bound aluminum hydroxide.
- the particulate Material can, for example, be dusted onto the surface of the aluminum substrate and then exposed to an oxidizing atmosphere.
- the particulate material on the aluminum substrate from a Dispersion of the particulate material applied in a liquid carrier and then most of the liquid vehicle or that entire liquid carrier can be evaporated.
- Suitable liquid carriers are water, lower aliphatic alcohols such as methanol, ethanol, Isopropanol, n-propanol, n-butanol and isobutanol, lower aliphatic Ketone, aliphatic hydrocarbons with about 6 to 12 carbon atoms, aromatic hydrocarbons and mixtures of these carriers.
- the efficiency of the binding process through additions from sodium hydroxide, sodium dicarbonate, sodium acetate, Magnesium oxide, calcium oxide, calcium carbonate, barium carbonate, magnesium nitrate, To increase calcium nitrate, calcium fluoride, barium nitrate and calcium acetate.
- the coated aluminum carrier is in the generally first moistened with water and then in an open Boiler into which steam is introduced under pressure. The aluminum beam is exposed to steam at 100 ° C for 15 minutes, for example, and then dried.
- a method is known from the publication WO 94/05507 in which particles are applied to the surface of a carrier by a thermal spraying technique or by plasma spraying, the particle size of which ranges from 2 ⁇ m to 15 ⁇ m.
- the material to be applied is, for example, aluminum oxide Al 2 O 3 .
- the thermal spray technology is based on flame spraying.
- a method using a plasma spray technique is preferred in which the powder is sprayed on in an atmosphere of an inert gas, for example hydrogen, nitrogen or argon, or mixtures of these or other gases.
- the gas is heated by an electric arc, for example to at least 10 4 ° C, in particular 2 ⁇ 10 4 ° C.
- the energy consumption of this technology is very high.
- flame spraying in which the carrier material is in tight contact with a block of material which has a high thermal mass and is accordingly kept at a predetermined temperature.
- EP-B-0 087 469 describes a method in which on an aluminum substrate a ceramic layer is formed by at least one slurry a monobasic phosphate and non-metallic inorganic particles is applied to the surface of the aluminum substrate and by Burn the slurry at a temperature of at least 230 ° C a ceramic coating is formed on the aluminum substrate. After that the Ceramic layer coated with a photosensitive lithographic layer.
- the slurry particles are partially composed of metal oxide particles with average grain sizes of 0.001 to 45 microns, the metal oxide particles Are alumina particles.
- the ceramic layer contains a reaction product of alumina with a monobasic phosphate and a reaction product a metal oxide that is not aluminum oxide with a monobasic Phosphate.
- the orthophosphate of the metal oxide is in an aqueous solution pH 6 to 12 insoluble.
- the object of the invention is to provide a recording material with a ceramic layer to create and a method for producing such a recording material to indicate that without great energy expenditure to a very good and permanent adhesion of the ceramic layer on the carrier leads and above to produce a lithographic printing plate from the recording material, which has a long print run with largely no color veil ensures.
- This object is achieved in such a way that the ceramic layer from a silicate compound and from aluminum oxide with at least 99.6 Wt .-% aluminum, and that the ceramic layer by means of the silicate compound adheres to the carrier as a binder.
- the particle size of the powdered aluminum oxide Al 2 O 3 is in the range from 0.20 to 3 ⁇ m and the aluminum oxide is applied to the support together with the binder and water as an aqueous dispersion and is connected to it by means of heat.
- the particle size distribution is in the range from 0.5 to 15 ⁇ m, with an average particle size of 4.5 ⁇ m.
- the aluminum oxide expediently contains, in addition to 99.6 to 99.8% by weight Aluminum 0.2 to 0.4 wt .-% Na, Si, Fe, Ca and Mg oxide.
- the ceramic layer consists of aluminum oxide, a titanium and a silicate compound.
- the titanium compound is preferably TiO 2 and its proportion is 10 to 90% by weight, in particular 15 to 30% by weight, of the ceramic layer. It is also possible for the ceramic layer to consist of aluminum oxide, a silicon and a silicate compound. Suitable further compounds instead of a titanium compound are zirconium oxide or hydroxide, boron or germanium oxide.
- a silicate compound suitable according to the invention is a sodium silicate in the form of sodium water glass as a binder, the solids content of an aqueous solution of the sodium water glass being 30% by weight and 2 to 4 mol of SiO 2 per 1 mol of sodium oxide Na 2 O.
- This silicon compound is expediently SiO 2 , its share together with the share of SiO 2 of the silicate compound is 25 to 80% by weight and the share of Na 2 O from the silicate compound is 5 to 10% by weight of the ceramic layer and the percentage of aluminum oxide Al 2 O 3 adds up to 100% by weight of the ceramic layer.
- Other suitable silicon compounds are alkyl silanes, which are hydrolyzed during drying, making the process more difficult to control.
- the ceramic layer consists of aluminum oxide, Titanium, silicon dioxide and a silicate compound, the weight proportions of the aluminum oxide 35 to 55%, the titanium as well as the silicon dioxide each amount to 15 to 25% of the ceramic layer.
- the process for producing a recording material stands out characterized in that the aqueous dispersion of aluminum oxide and a silicate compound alone or together with titanium and / or silicon dioxide via one F sueder, a roller or a doctor blade is applied to the carrier and at a temperature of 150 to 220 ° C for 50 to 80 sec is dried.
- the Drying temperature can start at 140 ° C and up to 220 ° C pass.
- the drying time can then last from 50 sec to 120 sec. On second drying step can follow.
- the ceramic layer has a thickness of 0.6 to 10 ⁇ m and in some cases in particular from 3.2 to 20 ⁇ m.
- the invention makes a recording material in a surprisingly simple manner coated with a ceramic coating without a high electrical Use of energy such as plasma spraying, thermal flame spraying or in the treatment of a recording material with a titanium dioxide dispersion is coated with steam under pressure, is required.
- the carrier is coated with a metal oxide dispersion by flow, roller or knife coating, i.e. through very low-energy conventional application process.
- the temperatures at Dry the applied dispersion layer in the range from 140 ° C to 220 ° C require relatively little electrical heating energy. This also applies to a possible Post-drying at a temperature of 190 to 280 ° C
- the recording material according to the invention has a hydrophilic ceramic layer, which has a textured surface.
- This ceramic layer replaces thus in the conventional methods of manufacturing one for printing plates suitable recording material, the process steps of the usual electrochemical Roughening and subsequent anodizing of the surface of the recording material. These two process steps are very energy intensive and also cause waste products that are must be processed before they can be deposited.
- the supports made of metal such as aluminum, steel, brass or copper can generally be pickled with a mixture of sodium hydroxide as the main component, sodium phosphate and a wetting agent (product name GRISAL from Messer-Griesheim) and then afterwards at room temperature for 60 to 120 seconds be rinsed with deionized water. Thereafter, the carrier with an aqueous dispersion of aluminum oxide Al 2 O 3 and a silicate compound, such as. B. water glass coated. Water glass is water-soluble potassium and sodium silicates, ie salts of silicic acids, or their viscous aqueous solutions.
- the sodium and potassium water glasses are usually characterized by the mass or mole ratio of SiO 2 to alkali oxide and the density of the aqueous solution.
- supports made of aluminum and as a binder for the ceramic layer in the aqueous dispersion of sodium silicate are preferably used.
- the proportion of aluminum oxide Al 2 O 3 in the aqueous dispersion is 19 to 28% by weight, in particular 26%.
- the particle size of the powdered aluminum oxide Al 2 O 3 is in the range from 0.20 to 3 ⁇ m and the aqueous dispersion of the aluminum oxide, the water glass and deionized water is connected to the carrier by means of heat.
- the temperature is 140 to 220 ° C, the drying time being between 50 to 120 seconds.
- the aqueous dispersion is applied with the aid of a flow machine, a roller or a doctor blade. After the possible second drying step with temperatures of 190 ° C.
- an abrasion-resistant ceramic layer which has a structure with particle sizes of 0.5 to 15 ⁇ m in diameter, in particular 4.5 ⁇ m, and a thickness of approximately 3.20 to Has 20 ⁇ m.
- a light-sensitive layer is applied to this ceramic layer made of Al 2 O 3 and a silicate compound.
- the components of the aqueous dispersion of aluminum oxide, sodium silicate and demineralized water are summarized in weight for various examples in Table 1 below.
- Table 1 also contains information on the print run, the color haze and the temperatures in the 1st and 2nd drying step of the printing plates which are coated with a ceramic layer which were produced by means of the dispersions mentioned.
- the solids content of the soda water glass is 30%, ie 100 g of soda water glass contain 30 g of solid soda water glass.
- the percentage composition of the constituents of the ceramic layer was calculated from Examples 1 and 2 on the one hand and 3 to 10 on the other hand, with the assumption that after the second drying step only the solids content of the sodium silicate, namely SiO 2 and Na 2 O and the aluminum oxide Al 2 O 3 are contained in the ceramic layer.
- the percentage composition of the ceramic layer with SiO 2 is in the range from 59.2 to 66.2% by weight.
- Al 2 O 3 in the range from 59.2 to 66.2% by weight.
- Further investigations with a higher proportion of soda water glass with the same proportion of Al 2 O 3 in Examples 1 to 10 show that an Al 2 O 3 proportion of 45% by weight in the ceramic layer largely leaves the print quality unchanged.
- the aluminum oxide Al 2 O 3 consists of 99.6 to 99.8% by weight of pure aluminum and also contains Na, Si, Fe, Ca and Mg oxides, which total 0.20 to 0. 4% by weight.
- the aqueous dispersion of aluminum oxide Al 2 O 3 is obtained by grinding a mixture of powdered aluminum oxide, sodium silicate and deionized water in a ball mill or by means of dispersing disks.
- the ceramic layer consists of silicon dioxide and a titanium compound, which is, for example, TiO 2 .
- the proportion of titanium dioxide is in the range from 10 to 90% by weight, in particular from 15 to 30% by weight, of the ceramic layer.
- an aqueous dispersion which contains, for example, 18% by weight of SiO 2 , 6% by weight of TiO 2 , 50% by weight of water glass, 25% by weight of fully demineralized water and 1% by weight.
- -% contains additives.
- the efficiency of the binding process on the carrier can be increased by incorporating various additives into the dispersion.
- additives are of advantage if the ceramic layer should have a greater thickness up to 20 ⁇ m. However, such additives are by no means absolutely necessary since the adhesion of the ceramic layer is fully sufficient even without such additives.
- additives are, for example, fluorocarbon compounds such as polyvinylidene fluoride or a copolymer of vinyl chloride-vinyl-isobutyl ether.
- fluorocarbon compounds such as polyvinylidene fluoride or a copolymer of vinyl chloride-vinyl-isobutyl ether.
- the proportion of water in the dispersion increases by 1% if the dispersion is prepared without additives.
- the ceramic layer consists of aluminum oxide, a silicon compound, which is, for example, SiO 2 , and a silicate compound.
- the proportion of the silicon compound in the ceramic layer together with the proportion of SiO 2 in the silicate compound is 25 to 80% by weight.
- the proportion of sodium oxide Na 2 O in the silicate compound makes up 5 to 10% by weight of the ceramic layer.
- the proportion of aluminum oxide forms the rest of the ceramic layer.
- a dispersion is made, for example, of 35 to 48% by weight of sodium water glass, 14 to 17% by weight of aluminum oxide Al 2 O 3 , 6% by weight of silicon dioxide SiO 2 and 32 to 42% by weight of fully demineralized water applied to the carrier.
- Table 2 shows the constituents of the aqueous dispersion of titanium dioxide TiO 2 , silicon dioxide SiO 2 , sodium silicate, demineralized water and various additives such as phosphoric acid, polyvinylidene fluoride, vinyl chloride-vinyl isobutyl ether and hydroxymethyl cellulose.
- Table 2 also contains information on the print run, the color haze and the temperatures in the 1st and 2nd drying step. Otherwise, the statements made in connection with Examples 1 to 10 apply to the solids content of the sodium water glass and the molar ratio of SiO 2 to Na 2 O of the sodium water glass.
- the percentage composition of the constituents of the ceramic layer was determined from Examples 12 to 14 on the one hand and Example 16 on the other hand, with the assumption that the following constituents are contained in the ceramic layer after the second drying step: SiO 2 and Na 2 O as solids components of the soda water glass , SiO 2 , which was present as silica and diatoms in the dispersion and titanium dioxide.
- SiO 2 which was present as silica and diatoms in the dispersion and titanium dioxide.
- the percentage composition is: Fluorad 0.1 to 0.2% by weight, SiO 2 74 to 75 % By weight, Na 2 O 7.6 to 9.8% by weight, TiO 2 15.5 to 18.2% by weight.
- Dispersion components (g) Product name Examples 19th 20th 21 22 23 24th 25th phosphoric acid 3.85 6 6 6 6 6 6 Wetting agent Fluorad FC98 0.167 0.167 0.167 0.167 0.167 0.167 Soda water glass 150 150 150 150 150 150 150 150 150 150 150 150 150 150 Silica SiO 2 Cab-O-Sil M5 3rd 3rd 3rd 3.15 3.15 3rd Silica SiO 2 Gasil 114 Silica SiO 2 HP 250 Titanium dioxide TiO 2 18th 18th 18th 18.81 18.81 18.81 18th Diatoms SiO 2 Celite White Snow Floss 45 45 45 47.04 47.04 47.04 45 Polyvinylidene fluoride Vi
- the ceramic layer of the recording material consists of aluminum oxide, titanium and silicon dioxide and a silicate compound.
- the proportions of aluminum oxide are 35 to 55% by weight, those of titanium dioxide and silicon dioxide are 15 to 25% by weight, and the proportion of sodium oxide Na 2 O from the silicate compound is 5 to 8% by weight.
- additives can be incorporated into the dispersion or in the soda water glass, the binding effect of the dispersion on the Carrier can be increased.
- These additives include Cellulose compounds such as hydroxymethyl cellulose (product name Tylose C10000), which acts as a stabilizer Act.
- Tylose C10000 hydroxymethyl cellulose
- the ratio between the amount of soda water glass and the stabilizer in the range of 1.5: 1 to 4: 1.
- Another stabilizer that can be added to the soda water glass is selected from the group of silicone resin emulsions, phenylmethylpolysiloxane resin solutions, modified acrylic polymers, xylene, propylene glycol, defoamers on the Base selected from mineral oils and polysiloxanes.
- Surfactants and wetting agents can also be added to the dispersions.
- the wetting agents are based, for example, on perfluorinated carboxylic acids (Fluorad® FC98).
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Inorganic Chemistry (AREA)
- Printing Plates And Materials Therefor (AREA)
- Laminated Bodies (AREA)
- Photoreceptors In Electrophotography (AREA)
- Materials For Photolithography (AREA)
Abstract
Description
| (Beispiele 11 bis 18) | |||||||||
| Dispersionsbestandteile (g) | Produktname | Beispiele | |||||||
| 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | ||
| Phosphorsäure | |||||||||
| Netzmittel | Fluorad FC98 | 0,167 | 0,167 | 0,167 | 0,167 | 0,167 | 0,167 | ||
| Natronwasserglas | 150 | 150 | 150 | 150 | 150 | 150 | 150 | 150 | |
| Kieselsäure SiO2 | Cab-O-Sil M5 | 3 | 3 | 4,5 | |||||
| Kieselsäure SiO2 | Gasil 114 | 3 | 65,1 | ||||||
| Kieselsäure SiO2 | HP 250 | 3 | |||||||
| Titandioxid TiO2 | 18 | 18 | 18 | 18 | 18 | 27,3 | |||
| Diatomeen SiO2 | Celite White Snow Floss | 45 | 45 | 45 | 45 | 45 | 68,2 | 65,25 | |
| Polyvinylidenfluorid | Vidar 1002 | 3 | |||||||
| Copolymer Vinylchlorid/-Vinylisobutylether | Hostaflex CM620 | ||||||||
| Hydroxymethylcellulose | Tylose C10000 | ||||||||
| VE-Wasser | 120 | 120 | 120 | 120 | 100 | 179,6 | 118,35 | 208,5 | |
| Gesamt | 339 | 336 | 336 | 336 | 313 | 429,6 | 333,6 | 423,6 | |
| Druckauflage | 190 000 | 5 000 | 10 000 | 10 000 | 20 000 | 13 000 | 40 000 | 40 000 | |
| Farbschleier | |||||||||
| 1. Trocknung 60 s | 190° | 190° | 190° | 190° | 190° | 190° | 190° | 190° | |
| 2. Trocknung 60 s (max. 280 °C) | 270° | 270° | 270° | 270° | 270° | 270° | 270° | 270 |
| (Beispiele 19 - 25) | ||||||||
| Dispersionsbestandteile (g) | Produktname | Beispiele | ||||||
| 19 | 20 | 21 | 22 | 23 | 24 | 25 | ||
| Phosphorsäure | 3,85 | 6 | 6 | 6 | 6 | 6 | ||
| Netzmittel | Fluorad FC98 | 0,167 | 0,167 | 0,167 | 0,167 | 0,167 | 0,167 | |
| Natronwasserglas | 150 | 150 | 150 | 150 | 150 | 150 | 150 | |
| Kieselsäure SiO2 | Cab-O-Sil M5 | 3 | 3 | 3 | 3,15 | 3,15 | 3 | |
| Kieselsäure SiO2 | Gasil 114 | |||||||
| Kieselsäure SiO2 | HP 250 | |||||||
| Titandioxid TiO2 | 18 | 18 | 18 | 18,81 | 18,81 | 18,81 | 18 | |
| Diatomeen SiO2 | Celite White Snow Floss | 45 | 45 | 45 | 47,04 | 47,04 | 47,04 | 45 |
| Polyvinylidenfluorid | Vidar 1002 | 3 | 3 | 3,15 | ||||
| Copolymer Vinylchlorid/-Vinylisobutylether | Hostaflex CM620 | 3 | ||||||
| Hydroxymethylcellulose | Tylose C10000 | 2,4 | ||||||
| VE-Wasser | 255 | 182,5 | 210 | 185,1 | 185,1 | 185,1 | 185,1 | |
| Gesamt | 476,4 | 398,5 | 429 | 404,1 | 404,1 | 404,1 | 404,1 | |
| Druckauflage | 22 500 | 10 000 | 130 000 | 50 000 | 40 000 | 80 000 | 110 000 | |
| Farbschleier | ||||||||
| 1. Trocknung 60 s | 190° | 220° | 190° | 190° | 190° | 190° | 190° | |
| 2. Trocknung 60 s (max. 280 °C) | 270° | 270° | 270° | 270° | 270° | 270° | 270° |
Claims (22)
- Aufzeichnungsmaterial aus einem Träger und einer auf einer Oberfläche des Trägers aufgebrachten Keramikschicht sowie einer lichtempfindlichen Schicht, dadurch gekennzeichnet, daß die Keramikschicht aus einer Silikatverbindung und Aluminiumoxid mit zumindest 99,6 Gew.-% Aluminium besteht, und daß die Keramikschicht mittels der Silikatverbindung als Bindemittel auf dem Träger haftet.
- Aufzeichnungsmaterial nach Anspruch 1, dadurch gekennzeichnet, daß die Teilchengröße des pulverisierten Aluminiumoxids Al2O3 im Bereich von 0,20 bis 3 µm liegt und daß das Aluminiumoxid zusammen mit dem Bindemittel und Wasser als wäßrige Dispersion auf dem Träger aufgebracht und mittels Wärme mit diesem verbunden ist.
- Aufzeichnungsmaterial nach Anspruch 1, dadurch gekennzeichnet, daß das Aluminiumoxid neben 99,6 bis 99,8 Gew.-% Aluminium Na-, Si-, Fe-, Ca- und Mg-oxid enthält.
- Aufzeichnungsmaterial nach Anspruch 1, dadurch gekennzeichnet, daß die Keramikschicht aus Aluminiumoxid, einer Titan- und einer Silikatverbindung besteht.
- Aufzeichnungsmaterial nach Anspruch 4, dadurch gekennzeichnet, daß die Titanverbindung TiO2 ist und ihr Anteil 10 bis 90 Gew.-%, insbesondere 15 bis 30 Gew.-% der Keramikschicht beträgt.
- Aufzeichnungsmaterial nach Anspruch 1, dadurch gekennzeichnet, daß die Keramikschicht aus Aluminiumoxid, einer Silizium- und einer Silikatverbindung besteht.
- Aufzeichnungsmaterial nach Anspruch 6, dadurch gekennzeichnet, daß die Silikatverbindung ein Natriumsilikat in Form von Natronwasserglas als Bindemittel ist, wobei der Feststoffanteil einer wäßrigen Lösung des Natronwasserglases 30 Gew.-% beträgt und daß 2 bis 4 Mol SiO2 auf 1 Mol Natriumoxid Na2O kommen.
- Aufzeichnungsmaterial nach Anspruch 7, dadurch gekennzeichnet, daß das Molverhältnis SiO2 zu Na2O 3,0 bis 3,5, insbesondere 3,4 beträgt.
- Aufzeichnungsmaterial nach Anspruch 6, dadurch gekennzeichnet, daß die Siliziumverbindung SiO2 ist, daß ihr Anteil zusammen mit dem Anteil SiO2 der Silikatverbindung 25 bis 80 Gew.-% und der Anteil von Na2O aus der Silikatverbindung 5 bis 10 Gew.-% der Keramikschicht betragen und daß der prozentuale Anteil des Aluminiumoxids Al2O3 diese Gew.-% der Keramikschicht auf 100 Gew.-% ergänzt.
- Aufzeichnungsmaterial nach Anspruch 1, dadurch gekennzeichnet, daß die Keramikschicht eine Fluorkohlenwasserstoff-Verbindung mit einem Anteil von bis zu 1 Gew.-% enthält.
- Aufzeichnungsmaterial nach Anspruch 10, dadurch gekennzeichnet, daß die Fluorkohlenwasserstoff-Verbindung Polyvinylidenfluorid ist.
- Aufzeichnungsmaterial nach Anspruch 1, dadurch gekennzeichnet, daß die Keramikschicht ein Copolymer des Vinylchlorid-vinylisobutylether enthält.
- Aufzeichnungsmaterial nach Anspruch 1, dadurch gekennzeichnet, daß die Keramikschicht aus Aluminiumoxid-, Titan-, Siliziumdioxid und einer Silikatverbindung besteht.
- Aufzeichnungsmaterial nach Anspruch 13, dadurch gekennzeichnet, daß die Gewichtsanteile des Aluminiumoxids 35 bis 55 %, des Titan- als auch des Siliziumdioxids jeweils 15 bis 25 % und der Anteil des Natriumoxids Na2O aus der Silikatverbindung 5 bis 8 % der Keramikschicht betragen.
- Aufzeichnungsmaterial nach Anspruch 7, dadurch gekennzeichnet, daß als Stabilisator dem Natronwasserglas eine Celluloseverbindung wie Hydroxymethylcellulose im Verhältnis 1,5 : 1 bis 4 : 1 zugesetzt ist.
- Aufzeichnungsmaterial nach Anspruch 2, dadurch gekennzeichnet, daß die wäßrige Dispersion 0,25 bis 5 Gew.-% Zusätze, ausgewählt aus der Gruppe Silikonharz-Emulsionen, Phenylmethylpolysiloxanharz-Lösungen, modifizierte Acrylcopolymere, Xylol, Propylenglykol, Entschäumer auf der Basis von Mineralölen und Polysiloxanen, enthält.
- Aufzeichnungsmaterial nach Anspruch 1, dadurch gekennzeichnet, daß der Träger ein Metall oder dessen Legierungen aus der Gruppe Aluminium, Stahl, Messing, Kupfer ist.
- Aufzeichnungsmaterial nach einem der Ansprüche 1 bis 17, dadurch gekennzeichnet, daß die Schichtdicke der Keramikschicht 3,2 bis 20 µm beträgt.
- Verfahren zur Herstellung eines Aufzeichnungsmaterials nach einem oder mehreren der Ansprüche 1 bis 18, dadurch gekennzeichnet, daß die wäßrige Dispersion aus Aluminiumoxid und einer Silikatverbindung allein oder zusammen mit Titan- und/oder Siliziumdioxid über einen Fließer, eine Walze oder eine Rakel auf dem Träger angetragen wird und bei einer Temperatur von 150 °C bis 220 °C für 50 bis 80 s getrocknet wird.
- Verfahren nach Anspruch 19, dadurch gekennzeichnet, daß bei einer Temperatur von 140 ° bis 220 °C für 50 bis 120 s getrocknet wird.
- Verfahren nach Anspruch 19, dadurch gekennzeichnet, daß eine Nachtrocknung bei einer Temperatur von 190 bis 280 °C stattfindet.
- Verwendung des Aufzeichnungsmaterials nach einem oder mehreren der Ansprüche 1 bis 18 zur Herstellung einer lithografischen Druckplatte.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19839454 | 1998-08-29 | ||
| DE19839454A DE19839454A1 (de) | 1998-08-29 | 1998-08-29 | Aufzeichnungsmaterial aus einem Träger und einer auf einer Oberfläche des Trägers aufgebrachten Keramikschicht |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0992342A2 true EP0992342A2 (de) | 2000-04-12 |
| EP0992342A3 EP0992342A3 (de) | 2000-08-30 |
Family
ID=7879193
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP99116515A Withdrawn EP0992342A3 (de) | 1998-08-29 | 1999-08-24 | Aufzeichnungsmaterial aus einem Träger und einer auf einer Oberfläche aufgebrachten Keramikschicht |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US6240846B1 (de) |
| EP (1) | EP0992342A3 (de) |
| JP (1) | JP2000203172A (de) |
| DE (1) | DE19839454A1 (de) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1997866A1 (de) * | 2007-05-22 | 2008-12-03 | Agfa HealthCare NV | Strahlungsbildleuchtschirm oder Szintillatorschirm |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6293197B1 (en) * | 1999-08-17 | 2001-09-25 | Kodak Polychrome Graphics | Hydrophilized substrate for planographic printing |
| JP2005539377A (ja) * | 2002-09-12 | 2005-12-22 | アグフア−ゲヴエルト | ナノ−多孔質金属酸化物半導体層の調製法 |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3470013A (en) * | 1966-02-18 | 1969-09-30 | Hercules Inc | Coated plastic |
| US3871881A (en) | 1973-02-12 | 1975-03-18 | Minnesota Mining & Mfg | Coated aluminum substrates having a binder of aluminum hydroxyoxide |
| US3902976A (en) * | 1974-10-01 | 1975-09-02 | S O Litho Corp | Corrosion and abrasion resistant aluminum and aluminum alloy plates particularly useful as support members for photolithographic plates and the like |
| DE2504545A1 (de) | 1975-01-30 | 1976-08-05 | Minnesota Mining & Mfg | Beschichtete aluminiumsubstrate |
| US4293625A (en) * | 1977-03-28 | 1981-10-06 | Minnesota Mining And Manufacturing Company | Anchor layer in photolithographic receptor base contains oxide surface treated titanium dioxide |
| US4420549A (en) | 1981-09-08 | 1983-12-13 | Minnesota Mining And Manufacturing Company | Lithographic substrate and its process of manufacture |
| DE3268962D1 (en) | 1981-09-08 | 1986-03-20 | Minnesota Mining & Mfg | Lithographic substrate and its process of manufacture |
| JP2907643B2 (ja) * | 1992-07-16 | 1999-06-21 | 富士写真フイルム株式会社 | 感光性平版印刷版およびその処理方法 |
| WO1994005507A1 (en) | 1992-09-10 | 1994-03-17 | Horsell Graphic Industries Ltd | Printing plate |
| EP0862518B2 (de) * | 1995-11-24 | 2006-05-17 | Kodak Polychrome Graphics Company Ltd. | Hydrophilierter träger für flachdruckplatte und verfahren zu seiner herstellung |
| US5927207A (en) * | 1998-04-07 | 1999-07-27 | Eastman Kodak Company | Zirconia ceramic imaging member with hydrophilic surface layer and methods of use |
-
1998
- 1998-08-29 DE DE19839454A patent/DE19839454A1/de not_active Withdrawn
-
1999
- 1999-08-19 US US09/377,154 patent/US6240846B1/en not_active Expired - Fee Related
- 1999-08-24 EP EP99116515A patent/EP0992342A3/de not_active Withdrawn
- 1999-08-27 JP JP24157299A patent/JP2000203172A/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1997866A1 (de) * | 2007-05-22 | 2008-12-03 | Agfa HealthCare NV | Strahlungsbildleuchtschirm oder Szintillatorschirm |
Also Published As
| Publication number | Publication date |
|---|---|
| DE19839454A1 (de) | 2000-03-02 |
| US6240846B1 (en) | 2001-06-05 |
| EP0992342A3 (de) | 2000-08-30 |
| JP2000203172A (ja) | 2000-07-25 |
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