EP0249752B1 - Solution de mouillage pour lithographie contenant un mélange de colloides - Google Patents

Solution de mouillage pour lithographie contenant un mélange de colloides Download PDF

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Publication number
EP0249752B1
EP0249752B1 EP87107136A EP87107136A EP0249752B1 EP 0249752 B1 EP0249752 B1 EP 0249752B1 EP 87107136 A EP87107136 A EP 87107136A EP 87107136 A EP87107136 A EP 87107136A EP 0249752 B1 EP0249752 B1 EP 0249752B1
Authority
EP
European Patent Office
Prior art keywords
weight
water
solution
concentrate according
acid
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.)
Expired - Lifetime
Application number
EP87107136A
Other languages
German (de)
English (en)
Other versions
EP0249752A3 (en
EP0249752A2 (fr
Inventor
Henry W. Gventer
Raymond Hamilton
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CNA Holdings LLC
Original Assignee
Hoechst Celanese Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hoechst Celanese Corp filed Critical Hoechst Celanese Corp
Publication of EP0249752A2 publication Critical patent/EP0249752A2/fr
Publication of EP0249752A3 publication Critical patent/EP0249752A3/de
Application granted granted Critical
Publication of EP0249752B1 publication Critical patent/EP0249752B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B41N3/00—Preparing for use and conserving printing surfaces
    • B41N3/08—Damping; Neutralising or similar differentiation treatments for lithographic printing formes; Gumming or finishing solutions, fountain solutions, correction or deletion fluids, or on-press development

Definitions

  • the invention relates to an acidic, aqueous dampening solution concentrate for use in planographic printing.
  • planographic printing process is known.
  • printing is done from a flat plate or cylinder, which is usually made of anodized aluminum and has essentially no height differences on its surface.
  • the ability to print depends on different properties of the image and non-image areas on the surface.
  • the image to be reproduced is applied to the plate by one of several known methods in such a way that the non-image areas become hydrophilic, while the image areas become hydrophobic.
  • a light-sensitive layer is generally used. After imagewise exposing the photosensitive layer, the latent image is developed and part of the layer is removed from the plate. The plate is then treated with a preservative, whereupon it becomes hydrophilic in the areas freed from the light-sensitive layer.
  • aqueous dampening solution is then applied to the plate surface during the printing process.
  • the dampening solution keeps all parts of the plate surface which are not covered by the hydrophobic image moist.
  • it prevents the disk from toning, i. that is, it prevents the non-image areas from at least partially taking on color.
  • the dampening solution can be composed in such a way that it cleans the plate surface just enough and keeps it hydrophilic, that sharp contours are retained and rapid wear is prevented.
  • the dampening solution is applied to the plate by one or more rollers. Thereafter, at least one ink roller covered with an oil-based ink comes into contact with the entire surface of the plate, but only transfers the ink to the image areas because the hydrophilic non-image areas repel the ink.
  • the planographic printing plate is first wetted with the aqueous dampening solution and then colored with printing ink.
  • the dampening solution and at least part of the greasy ink are applied to the plate simultaneously with an application roller.
  • other rollers usually smaller in diameter than the first roller, can then contact the plate to distribute the ink more evenly.
  • the dampening solution can be prepared by the printer itself from a dampening solution concentrate by adding water and, if appropriate, 10 to 30% by volume of isopropyl alcohol.
  • Acid, aqueous dampening solution concentrates according to the prior art generally contain a water-soluble resin or colloid, such as. As gum arabic or cellulose gum, and may also contain a hydrophilizing agent, buffering agent and wetting agent.
  • Acid fountain solutions are usually designed to perform different tasks.
  • hydrophilic colloids such as. B. gum arabic
  • the non-image areas of the plate should remain hydrophilic during production printing.
  • Acidic hydrophilizing agents can also be added, so that the non-image areas remain sharper and repel the ink.
  • surfactants or combinations of surfactants and alcohols such as. B. isopropyl alcohol
  • the surface tension of the solution should be reduced so that the plate and roller surfaces can be wetted better. This property can also be achieved without surfactants if more than the amounts of hydrophilic colloids required to maintain the hydrophilicity of the non-printing plate surfaces in combination with at least one metal salt, e.g. B. with nitrates, chromates and the like., And / or be used with alcohols or glycols.
  • nitrates in conjunction with an excess of colloid (gum arabic) can further exacerbate the problem of blind running, since these substances tend to form complexes with gum arabic and thereby form gum arabic salts, which usually lead to the blind running of the plate.
  • colloid gum arabic
  • This concentrate can be composed so that it contains 12 to 60 wt .-% water and can be further diluted by the consumer with water or a mixture of water and less than 10 vol .-% isopropyl alcohol, so that dampening solution with a content of at least 99% by weight, preferably 99.1 to 99.9% by weight, of water or water / alcohol mixture and accordingly 0.1 to 0.9% by weight of non-aqueous / non-alcoholic components.
  • the mixture forming the solution or the concentrate essentially consists of the specified components. By this it is meant that the solution is functional as described and does not contain a substantial amount of surfactant or nitrate or chromate salt as a hydrophilizing agent.
  • the fountain solutions according to the invention preferably have a surface tension (measured with a surface tensiometer) in the range from 30 to 40 dynes / cm 2 , which can be achieved without having to add large amounts of gum arabic or surfactants and / or nitrate salts to the mixture.
  • the dampening solutions generally have a low solids content and can generally be applied to the printing plates in smaller amounts than known solutions and still achieve the effectiveness of a quality dampening solution, ie they wet the printing plate sufficiently and prevent toning or blind running. This in turn means that the plate in turn moistens the printing paper to a lesser extent and less solids can accumulate on the plate itself or on the dampening felt rollers used to apply the solution.
  • the water-soluble, film-forming hydrophilic colloids which are suitable according to the invention include gum arabic, tragacanth, carboxymethyl cellulose, sodium alginate, carboxymethyl starch, methyl cellulose and similar colloids which impart hydrophilic properties when applied to the non-image areas of the planographic printing plate. Gum arabic is preferred in the context of this invention and the colloid content of the concentrate is 0.1 to 1.5% by weight.
  • the second hydrophilic film-forming component of the dampening solution is polyvinylpyrrolidone, which is contained in the concentrate in an amount of 0.75 to 8.5% by weight.
  • the ratio of polyvinylpyrrolidone to colloid in the mixture is important if the advantages of reducing the blinding or toning of the plate as much as possible are to be achieved and at the same time it should be possible to apply the smallest amounts of water to the printing plate during the print run. It has been found that the best results are achieved if the ratio of polyvinylpyrrolidone: colloid on the basis of the dry weight is at least 1: 1.
  • the ratio of these components is preferably in the range from 10: 1 to 4: 1, very particularly preferably in the range from 8: 1 to 6: 1.
  • the acid component of the dampening solution serves a dual purpose: it is supposed to stabilize the pH value as well as to hydrophilize the plate.
  • Preferred acids are water-soluble weak acids, such as. B. citric, ascorbic, sulfanilic, tartaric, lactic, acetic, maleic and phosphoric acid, although dilute sulfuric acid can be used.
  • the preferred acid is citric acid.
  • Sufficient acid is removed to give the concentrate a pH in the range from 2 to 3.5, which, when further diluted with water for use as a dampening solution, gives a pH in the range from 4 to 4.5.
  • the amount of acid used is 5.0 to 30.0% by weight, preferably 10 to 25% by weight, based on the aqueous concentrate.
  • the fourth component of the dampening solution is a water-soluble or water-miscible glycol that serves as a wetting agent.
  • the wetting agent should distribute the dampening solution more easily over the non-image areas of the plate surface, and it should also delay the transfer of ink to the roller surface (felt coverings) of the rollers used to apply the dampening solution gladly.
  • Suitable glycols are alkanediols with 2 to 6 carbon atoms in the main chain, such as. B.
  • the concentrate can contain 20 to 50% by weight of glycol, the preferred range being 30 to 45% by weight.
  • Ethylene glycol is the preferred glycol.
  • the fifth component of the fountain solution is a phosphate / phosphoric acid buffer system that improves the stability of the mixture and appears to work synergistically with the polyvinylpyrrolidone component, keeping the pH of the fountain solution constant regardless of the degree of dilution or water quality.
  • the phosphate component can consist of a mono-, di- or trisodium phosphate or mixtures thereof in combination with phosphoric acid, the ratio of phosphate: phosphoric acid preferably being 10: 1 to 2: 1.
  • the concentrate can also be a bactericide, e.g. B. ( R ) Dowizil-75 (manufacturer Dow Chemical Company) in an amount sufficient to prevent or delay the bacterial attack in general from 0.01 to 0.4% by weight, preferably 0.05 to 0.125% by weight , based on the concentrate.
  • B. R
  • Dowizil-75 manufactured by Dow Chemical Company
  • the above-mentioned components are processed into a concentrate by dissolving them in water, preferably demineralized water.
  • the concentrate preferably contains 40 to 85% by weight, particularly preferably 50 to 75% by weight, of water-soluble and water-miscible components in water.
  • the printer can produce a ready-to-use fountain solution by adding about 25 to 90 g of the concentrate described above in 4 liters of water.
  • the dilution ratio is preferably about 40 to 60 g of concentrate to 3.75 l of water.
  • up to 10% by volume of the water can optionally be replaced by isopropyl alcohol.
  • the dampening solution according to the invention has the particular advantage that certain additives contained in conventional dampening solutions are not necessary in order to achieve good water flow and the resistance of the plate against blind running and toning when used in the printing process.
  • Conventional hydrophilizing agents such as nitrates and chromates are e.g. B. not necessary, and therefore there is a lower tendency to accumulate solids on the printing rollers during printing, due to the precipitation of these substances from the solution.
  • this does not mean that it is not possible to include smaller amounts of these substances in the recipe than usual, if this is desired.
  • dampening solution concentrate when the dampening solution concentrate is diluted before use in the printing process, good surface tension and good wetting properties of the solution can be achieved without the addition of isopropyl alcohol. In some cases, however, it may be desirable to add small amounts of less than 10 volume percent isopropyl alcohol to the solution so as to further improve its surfactant properties.
  • the mixture is stirred until all components have dissolved. It is then cooled to room temperature and forms the dampening solution concentrate.
  • a dampening solution approximately 250 g (8.75 oz) of the concentrate from Example 1 are mixed with approximately 19 liters (5 gallons) of completely deionized water.
  • This solution (solution A) is filled into the one fountain solution box of a two-color printing machine, model Miller TP 29S.
  • a commercially available dampening solution concentrate is provided for sheet-fed printing machines.
  • This concentrate is a solution based on gum arabic with salts and surfactants.
  • About 250 g (8.75 oz) of concentrate are placed in a mixture of water and 25 vol.% Isopropanol.
  • This solution (solution B) is filled into the other dampening solution box of the printing press. Each box is operated and controlled independently and supplies dampening solution to a separate printing unit.
  • the two-color printing machine prints two colors in succession on each sheet of paper fed.
  • the ink and dampening solution doses are set independently of each other.
  • Two N-50 printing plates are appropriately exposed, developed and preserved.
  • the N-50 plates are wet roughened, anodized, negative working printing plates manufactured by Enco Printing Products, a subsidiary of American Hoechst Corporation, Somerville, New Jersey, USA.
  • the two prepared N-50 plates are properly clamped onto the two plate cylinders.
  • a coated offset offset enameled stock type paper is used and both dampening solution supply systems are set to 36 at the start of the printing process.
  • the ink supply is adjusted so that a wet color density of 1.35 results.
  • the dampening solution setting is switched back two positions, and this process continues until the printed sheet shows signs of toning, i. that is, until the print quality turns out to be insufficient.
  • the dampening solution supply should be set as low as possible in order to keep the amount of water transported to a minimum. The greater the amount of water delivered to the paper, the greater the risk of wetting the paper and thus distorting the print.
  • additional amounts of water mixed with the printing ink can emulsify the ink and / or cause the rollers to run bright, both of which poor print quality.
  • the N-50 plate processed with the commercial dampening solution (solution B) begins to tone at a setting of 30, while the plate processed with the dampening solution according to the invention (solution A) begins to tone only at a setting of 22 to 24.
  • the dampening solution settings are switched back to the initial position and the experiment is repeated several times.
  • the printing plate running with the commercial dampening solution (solution B) can no longer recover after the third test sequence, while the plate running with the dampening solution according to the invention (solution A) still prints cleanly even after the fourth sequence.
  • New plates are prepared and printed with a dampening solution setting of 32.
  • the press is stopped for an hour. After this downtime, printing continues.
  • the plate used with the commercially available dampening solution (solution B) prints a dark haze, which cannot be removed by increasing the amount of dampening solution.
  • the plate must first be cleaned with a plate cleaner before it delivers copies of acceptable quality.
  • the plate used with the fountain solution according to the invention (solution A) runs cleanly and delivers good copies after less than 10 prints.
  • This dampening solution is particularly suitable for use in sheet-fed printing machines. It is a solution based on gum arabic with a content of salts, surfactants and an alcohol. About 175 g (6.25 oz) of the dampening solution concentrate is added to about 19 liters (5 gallons) of a mixture of water and 20 vol.% Isopropanol. The dampening solution settings are reduced until there is a toning. It can be seen that this commercially available dampening solution tones at the setting 30, while the dampening solution according to the invention only tones at 22 to 24.
  • the evaluation is carried out as described in Example 2, but here the N-50 plates are replaced by N-250 plates.
  • the N-250 plates are electrochemically roughened, anodized, negative working printing plates from the company Enco Printing Products.
  • This example describes the printing results obtained using a fountain solution concentrate prepared according to Example 1, but in which polyvinylpyrrolidone has been omitted.
  • a dampening solution concentrate is prepared as in Example 1, but the polyvinylpyrrolidone is omitted. All other components and their parts remain unchanged.
  • the concentrate is diluted as stated in Example 2 and filled into the first dampening solution box of the printing press (solution C).
  • the other box contains the commercially available dampening solution from example 2 (solution B).
  • New plates are produced and used at setting 32 for printing.
  • the press is turned off for an hour. After this downtime, printing is carried out again with the non-preserved and uncleaned plates. Both plates print a dark veil. With the one with the commercially available dampening solution (solution B) used plate, the veil can not be removed even with increased dampening solution supply.
  • solution B dampening solution
  • the plate used with solution C cleans somewhat, but not to the extent that it can be considered acceptable. Both must be treated with a plate cleaner before satisfactory copies can be obtained.
  • This example describes the printing results obtained when using a fountain solution concentrate prepared according to Example 1, but in which gum arabic was omitted.
  • a dampening solution concentrate is produced as in Example 1, but without gum arabic. All other components and their parts remain unchanged.
  • the concentrate is diluted as indicated in Example 2 and poured into the first dampening solution box of the printing press (solution D).
  • the commercially available dampening solution from example 2 (solution B) is filled into the other box.
  • the N-50 plate running with the commercially available dampening solution (solution B) starts to tone at setting 30, and the dampening solution without gum arabic (solution D) also leads to the plate being toned at setting 30.
  • the dampening solution settings are returned to the initial position and the experiment is repeated several times.
  • the plate running with the commercial dampening solution can no longer recover after the third test sequence, the plate running with solution D after the fourth test sequence.
  • New plates are produced and used at setting 32 for printing.
  • the press is turned off for an hour. After this downtime, printing is carried out again with the non-preserved and unpurified plates. Both plates print a dark veil. With the plate used with the commercially available dampening solution (solution B), the veil cannot be removed even when the dampening solution is intensified. The plate used with solution D cleans somewhat, but not to the extent that it can be considered acceptable. Both must be treated with a plate cleaner before satisfactory copies can be obtained.

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  • Printing Plates And Materials Therefor (AREA)

Claims (11)

1. Concentré de produit de mouillage constitué d'un mélange de
a) de 0,1 à 1,5% en poids d'un colloïde hydrophile feuillogène soluble dans l'eau, qui n'est pas la polyvinylpyrrolidone,
b) de 0,75 à 8,5% en poids de polyvinylpyrrolidone,
c) de 5,0 à 30,0% en poids d'un agent d'hydrophili- sation acide soluble dans l'eau, engendrant un pH de 2,0 à 3,5,
d) de 20,0 à 50,0% en poids d'un glycol soluble dans l'eau ou miscible à l'eau,
e) de 0,01 à 1,25% en poids d'un système tampon phosphate/acide phosphorique,
f) éventuellement d'autres additifs et
g) le reste étant constitué d'eau jusqu'à 100% en poids.
2. Concentré selon la revendication 1, caractérisé en ce que le rapport de b) à a) va de 10:1 à 4:1, exprimé en poids sec des composants.
3. Concentré selon la revendication 1 ou 2, caractérisé en ce que le colloïde hydrophile est la gomme arabique.
4. Concentré selon l'une des revendications 1 à 3, caractérisé en ce que le glycol est l'éthylènegly- col.
5. Concentré selon l'une des revendications 1 à 4, caractérisé en ce que la proportion du glycol va de 30 à 45% en poids.
6. Concentré selon l'une des revendications 1 à 5, caractérisé en ce que l'agent d'hydrophilisation acide est constitué d'acide citrique, ascorbique, sul- fanilique, tartrique, lactique, maléique, phosphorique, acétique ou d'acide sulfurique dilué ou de leurs sels.
7. Concentré selon la revendication 6, caractérisé en ce que la proportion d'agent d'hydrophilisation va de 10 à 25.
8. Concentré selon l'une des revendications 1 à 7, caractérisé en ce qu'il présente un pH de 2,0 à 3,5.
9. Concentré selon l'une des revendications 1 à 8, caractérisé en ce que la teneur en eau va de 25 à 50% en poids.
10. Concentré dilué selon l'une des revendications 1 à 9, caractérisé en ce que la teneur en matière sèche des composants va de 0,1 à 0,9% en poids.
11. Utilisation d'un concentré selon l'une des revendications 1 à 10, sous forme diluée, dans le processus d'impression offset.
EP87107136A 1986-06-16 1987-05-18 Solution de mouillage pour lithographie contenant un mélange de colloides Expired - Lifetime EP0249752B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US06/874,942 US4764213A (en) 1986-06-16 1986-06-16 Lithographic fountain solution containing mixed colloids
US874942 1986-06-16

Publications (3)

Publication Number Publication Date
EP0249752A2 EP0249752A2 (fr) 1987-12-23
EP0249752A3 EP0249752A3 (en) 1988-03-30
EP0249752B1 true EP0249752B1 (fr) 1990-12-12

Family

ID=25364912

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87107136A Expired - Lifetime EP0249752B1 (fr) 1986-06-16 1987-05-18 Solution de mouillage pour lithographie contenant un mélange de colloides

Country Status (5)

Country Link
US (1) US4764213A (fr)
EP (1) EP0249752B1 (fr)
JP (1) JPS634993A (fr)
CA (1) CA1296119C (fr)
DE (1) DE3766656D1 (fr)

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4873174A (en) * 1988-02-03 1989-10-10 Hoechst Celanese Corporation Method of using developer-finisher compositions for lithographic plates
DE3830467A1 (de) * 1988-09-08 1990-03-15 Hoechst Ag Feuchtmittel fuer den offsetdruck
US5054394A (en) * 1989-02-01 1991-10-08 Zweig Leon A Isopropyl alcohol-free catalytic fountain solution concentrate and method for introducing a catalytic agent into lithographic printing ink
US4906296A (en) * 1989-02-01 1990-03-06 Zweig Leon A Catalytic fountain solution
US4982661A (en) * 1989-02-01 1991-01-08 Zweig Leon A Method of infusing catalytic cross-linking agents into lithographic printing ink
US5006168A (en) * 1989-04-03 1991-04-09 Aqualon Company Water soluble polymers as alcohol replacement in lithographic fountain solutions
US5236972A (en) * 1989-07-05 1993-08-17 The United States Of America As Represented By The Secretary Of The Air Force Thermoplastic powder slurry for fiber impregnation and film formation
US5061607A (en) * 1990-02-13 1991-10-29 Eastman Kodak Company Composition for protecting the surface of lithographic printing plates
JP2662828B2 (ja) * 1990-10-25 1997-10-15 富士写真フイルム株式会社 平版印刷用湿し水組成物及び平版印刷方法
US5336302A (en) * 1992-03-05 1994-08-09 Bondurant Louis E Non-alcohol fountain solutions
US5256190A (en) * 1992-03-16 1993-10-26 Barth Thomas M Universal chemical system for offset printing
US6245481B1 (en) * 1999-10-12 2001-06-12 Gary Ganghui Teng On-press process of lithographic plates having a laser sensitive mask layer
JP2001138656A (ja) * 1999-11-10 2001-05-22 Fuji Photo Film Co Ltd 平版印刷用濃縮湿し水組成物
ES2156778B1 (es) * 1999-12-23 2002-03-01 Delta Graf S A Solucion humectante para planchas de impresion offset y procedimiento y dispositivo para su preparacion.
US6486108B1 (en) * 2000-05-31 2002-11-26 Micron Technology, Inc. Cleaning composition useful in semiconductor integrated circuit fabrication
US6488754B2 (en) 2000-11-29 2002-12-03 Grain Processing Corporation Lithographic dampening solution and method for dampening a lithographic plate
US7196047B2 (en) * 2002-08-09 2007-03-27 Rbp Chemical Technology, Inc. Fountain solution concentrates
US6844140B1 (en) * 2003-12-29 2005-01-18 Kodak Polychrome Graphics Llc Method for reducing start up blinding in no-process lithographic printing plates
JP5089866B2 (ja) * 2004-09-10 2012-12-05 富士フイルム株式会社 平版印刷方法
US8071274B2 (en) * 2005-11-04 2011-12-06 Gary Ganghui Teng Aqueous treatment of on-press developable lithographic printing plate
AU2013334151B2 (en) 2012-10-25 2017-09-14 Lantech.Com, Llc Rotation angle-based wrapping
WO2014066766A1 (fr) 2012-10-25 2014-05-01 Lantech.Com, Llc Enveloppement basé sur une circonférence effective
US10239645B2 (en) 2013-02-13 2019-03-26 Lantech.Com, Llc Packaging material profiling for containment force-based wrapping
CN103950311B (zh) * 2014-04-29 2016-04-06 江门市蓬江区荷塘镇诚信精细化工厂 一种免酒精润版液中的醇替代物及其制备方法
WO2020033306A1 (fr) 2018-08-06 2020-02-13 Lantech.Com, Llc Emballeuse sous film étirable avec contrôle de débit de distribution par ajustement de courbe

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL273144A (fr) * 1961-01-13
NL287211A (fr) * 1962-01-11
BE755441A (fr) * 1969-08-28 1971-03-01 Du Pont Solutions de finissage pour plaques lithographiques
US4266481A (en) * 1975-04-07 1981-05-12 The Dow Chemical Company Image-bearing lithographic plates with desensitizing coating
JPS5266002A (en) * 1975-11-26 1977-06-01 Fuji Photo Film Co Ltd Desensitizer for lithographic press plate
GB1492529A (en) * 1976-05-26 1977-11-23 Vickers Ltd Treatment of planographic printing blanks
JPS54138705A (en) * 1978-04-18 1979-10-27 Mitsubishi Paper Mills Ltd Method of treating improved flat printing plate
JPS5519504A (en) * 1978-06-23 1980-02-12 Fuji Photo Film Co Ltd Lithoprinting plate protective agent
DE2925362C2 (de) * 1978-06-23 1985-08-14 Fuji Photo Film Co., Ltd., Minami-Ashigara, Kanagawa Schutzmittel vom Emulsionstyp für die Oberfläche von lithographischen Druckplatten
JPS55121447A (en) * 1979-03-15 1980-09-18 Fuji Photo Film Co Ltd Lithographic printing plate correcting agent
US4400481A (en) * 1980-11-05 1983-08-23 Richardson Graphics Company Finisher and preserver for lithographic plates
US4399243A (en) * 1980-12-12 1983-08-16 Richardson Graphics Company Cleaner and scratch remover composition
JPS5839495A (ja) * 1981-09-02 1983-03-08 Mitsubishi Paper Mills Ltd 平版印刷板
JPS5964396A (ja) * 1982-10-05 1984-04-12 Fuji Photo Film Co Ltd 平版印刷版用版面保護剤

Also Published As

Publication number Publication date
DE3766656D1 (de) 1991-01-24
EP0249752A3 (en) 1988-03-30
CA1296119C (fr) 1992-02-18
US4764213A (en) 1988-08-16
JPS634993A (ja) 1988-01-09
EP0249752A2 (fr) 1987-12-23

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