US3342601A - Lithographic printing plate - Google Patents

Lithographic printing plate Download PDF

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Publication number
US3342601A
US3342601A US347931A US34793164A US3342601A US 3342601 A US3342601 A US 3342601A US 347931 A US347931 A US 347931A US 34793164 A US34793164 A US 34793164A US 3342601 A US3342601 A US 3342601A
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United States
Prior art keywords
acid
aluminum
coating
titanate
plate
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Expired - Lifetime
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US347931A
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English (en)
Inventor
James F Houle
Gilden R Van Norman
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.)
Eastman Kodak Co
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Eastman Kodak Co
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Filing date
Publication date
Application filed by Eastman Kodak Co filed Critical Eastman Kodak Co
Priority to US347931A priority Critical patent/US3342601A/en
Priority to DEE28725A priority patent/DE1299661B/de
Priority to ES0309594A priority patent/ES309594A1/es
Priority to NL6502350A priority patent/NL6502350A/xx
Priority to BE660255A priority patent/BE660255A/xx
Priority to FR7087A priority patent/FR1433616A/fr
Priority to AT57568A priority patent/AT274571B/de
Priority to CH267065A priority patent/CH435335A/fr
Priority to AT57168A priority patent/AT271509B/de
Priority to GB8295/65A priority patent/GB1108559A/en
Priority to NO156951A priority patent/NO115071B/no
Priority to SE2495/65A priority patent/SE315909B/xx
Priority to DK103065AA priority patent/DK124245B/da
Priority to AT169965A priority patent/AT267552B/de
Priority to GB38572/67A priority patent/GB1108560A/en
Priority to ES0314254A priority patent/ES314254A1/es
Priority to ES0314255A priority patent/ES314255A1/es
Priority to US505041A priority patent/US3486450A/en
Priority to US648036A priority patent/US3417055A/en
Priority to US658559A priority patent/US3419406A/en
Application granted granted Critical
Publication of US3342601A publication Critical patent/US3342601A/en
Priority to NO16987267A priority patent/NO124113B/no
Priority to SE8622/68A priority patent/SE320385B/xx
Priority to US871607A priority patent/US3694251A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/30—Low-molecular-weight compounds
    • C08G18/38—Low-molecular-weight compounds having heteroatoms other than oxygen
    • C08G18/3819—Low-molecular-weight compounds having heteroatoms other than oxygen having nitrogen
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
    • G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
    • G03F7/004—Photosensitive materials
    • G03F7/085—Photosensitive compositions characterised by adhesion-promoting non-macromolecular additives

Definitions

  • Light-sensitive photographic elements such as lithographic printing plates are prepared by coating a support with an aqueous composition containing a complex of an alkyl titanate and hydrogen peroxide or certain inorganic acids alone or in combination with the peroxide.
  • This invention relates to lithographic printing plates, more particularly to offset printing plates commonly used in the lithographic trade.
  • Lithographic plates are well known in the graphic arts field, particularly those having metal supports such as aluminum or zinc.
  • aluminum has been particularly attractive for lithographic plates due to its cost, availability and light weight.
  • certain inherent disadvantages must first be overcome. For instance, it has been established that the naturally occurring oxide film on aluminum is not sufiiciently hydrophilic to provide trouble-free operation on a lithographic printing press.
  • the bare aluminum is prone to become slightly hydrophobicor oleophilic resulting in a gradual buildup of ink on the nonprinting areas. This phenomena is referred to in the trade as toning or scumming.
  • One method of providing an aluminum plate having an insoluble, hydrophilic layer which also isolates the diazo light sensitive coating from the aluminum substrate is to deposit a coating on the aluminum of a silicate containing the SiO radical.
  • a presensitized aluminum lithographic plate having a silicate layer thereon has limited press life and also is subject to decreases in sensitivity during storage, especially after the plate has been exposed to the atmosphere particularly with high humidity or heat or a combination of both. Therefore, it has been desirable to provide a plate having greater press latitude, longer press life and longer shelf life than provided by the plates of the prior art.
  • Coating an aluminum surface with silica or similar silicate undercoating requires a smooth aluminum surface.
  • a grained or brushed surface provides a wider set of operating conditions on the press, particularly since a grained plate requires a less critical ink-Water balance than does the silicate coated smooth plate.
  • the less critical ink-water balance decreases the tendency for the ink to emulsify during multicolor printing, which normally results in a loss of image sharpness. Therefore, it has also been desirable to provide a presensitized aluminum plate having a grained or brushed surface, In order to provide an insoluble hydrophilic surface or surface coating it is desirable to eliminate the necessity of elevated temperatures and subsequent washing during the process.
  • a suitable insoluble, hydrophilic surface layer may be imparted to an aluminum sheet by treatment with aqueous solutions of certain complex titanium salts capable of reacting at or on the surface to form an insoluble layer.
  • One object of this invention is to provide a hydrophilic lithographic printing surface. Another object is to provide a coating composition for treating surfaces-such as metal, paper, polymeric, etc. to render a surface hydrophilic for use in lithographic printing. A further object is to provide a presensitized lithographic printing plate. A still further object is to provide a diazo sensitized, grained aluminum, lithographic printing plate.
  • Another object is to provide a novel coating composition which adheres tenaciously to various supports including metals such as aluminum, zinc, copper, and the like, and to polymeric materials such as polyesters, polyamides, polystyrene, cellulose esters, etc., to provide a hydrophilic coating substantially free from water-soluble materials and to which can be adhered light sensitive coatings, printing inks, paints, etc.
  • the above objects and other objects are attained by making a coating composition in an acid medium of a titanium compound which is substantially water soluble.
  • titanium orthoesters such as, for example, the tetraalkyl titanates.
  • the preferred tetraalkyl titanates are those having alkyl groups with 2 to 5 carbon atoms such as, for example, tetraethyl titanate, tetrapropyl titanate, tetraisopropyl titanate, tetrabutyl titanate, tetraisobutyl titanate, tetraamyl titanate, etc.
  • the acidic constituent which is useful for reacting with the titanate produces a water-soluble titanium complex in an acid media.
  • Useful acidic constituents include, for example, fiuosilicic acid, hydrofluoric acid, phosphoric acid, fluoboric acid, nitric acid, etc.
  • the coating composition is preferably prepared by adding the alkyl titanate to the dilute aqueous acid, whereupon the alkyl titanate immediately reacts to form hydrous titanium dioxide which subsequently dissolves and/ or reacts forming a so called basic titanium salt.
  • a useful molar range of fluosilicic acid to tetraalkyl titanate is from 5:1 to 1:1 moles, although our prewill be apparent from the following disferred molar range is from 2:1 to 1:1 moles.
  • the pH of the coating compositions may be varied from 1.0 to 5.0.
  • a useful molar range of fluoboric acid to tetraalkyl titanate is from 7:1 to 2:1 moles.
  • the coating composition employed is titanyl peroxy phosphate.
  • the alkyl titanate is added to a dilute hydrogen peroxide solution. When solution is complete, phosphoric acid is then added.
  • a preferred composition we use 6.810.7 moles hydrogen peroxide per mole alkyl titanate and 2.3-7 moles phosphoric acid per mole alkyl titanate. It will be fully realized that the volumetric proportions may be varied and that the amount of water used is not critical but must be sufficient to provide solubility.
  • a useful coating composition is also obtained by preparing a pertitanic acid by dissolving the alkyl titanate in hydrogen peroxide.
  • the coating may be on one or both sides of the support.
  • the thickness of the titanium complex layer on an aluminum substrate is difficult to determine due to its thinness. However, it is most likely in the range of thickness of the naturally occurring oxide.
  • driers may be used advantageously, employing heat by known means, such as hot air, infrared lamps, etc.
  • the light sensitive coating may be a suitably stabilized water-soluble resin containing the diazonium group which upon exposure to ultraviolet light forms an oleophilic surface or image.
  • the light sensitive coating may be of the general for- M is a di or trivalent metal of the groups known to stabilize the diazonium groups, e.g. cadmium, zinc, bismuth, arsenic, antimony, tin, iron, platinum, mercury.
  • X is an anion or mixture of anions consisting of halogen or sulfates.
  • Z may be a phenyl or substituted phenyl in which case the resin is an aldehyde condensation product of a p-diazodiphenylamine salt.
  • Y is hydrogen.
  • Z and Y may also be organic radicals functionally capable of entering into an addition polymerization, polyesterification, condensation or other reaction capable of producing a relative low molecular weight resin or capable of reacting with a preformed polymer.
  • Z and Y in this case may be the same or different, the parent diazonium compound being a substituted p-diazo aniline.
  • reactive groups are hydroxyl as in N-ethyl, -N-(B-hydroxyethyl)-anilino, 4-diazo salts capable of reacting with polymerizable groups such as acryloyl, methacryloyl, etc.
  • the placement of various groups on the anilino nitrogen can result in the preparation of polyesters, polyethers, polyurethanes, polyacetals, polycarbonates, etc., by direct polymerization or condensation with functionally proper preformed polymers.
  • the light sensitive coating consists of an aldehyde condensation product of a p-diazodiphenyl amine.
  • Light sensitive aldehyde condensation products of p-diazodiphenyl amine stabilized with metal salts are well known in the art as described in U.S. Patent 2,714,066.
  • Such resins are also available commercially, e.g. Diazo Resin No. 4 supplied by Fairmo-unt Chemical Co. This material is described as a diazonium sulfate-zinc chloride double salt.
  • aluminum reacts with the diazo resin causing decomposition. Therefore, in our preferred embodiment we use a method of preparation and stabilization of the light sensitive diazo resins such that they are not decomposed by the aluminum surface.
  • the presensitized, grained aluminum printing plate prepared according to our specifications, may be handled and treated in use as is customary in the art.
  • the unexposed areas are removed and the plate lacquered, after which the plate is used on a lithographic printing press.
  • the sensitive layer for the lithographic plate can be exposed to visible light, ultraviolet light, infrared light, X-rays or to heat patterns in order to form differential areas for printing. It is possible to use light sensitive organic compounds such as aliphatic and aromatic esters, hydrazides and amides of napthoquinone-diazide-sulfonates, cinnamal-malonic acids, their substitution products and functional derivatives, diazonium salts of amino-diphenyl amines and their condensation products with formaldehyde, orthoand para-quinone diazides of benzals, anthracenes and heterocyclic systems, for example, quinoline, indazoles, benzimidazoles, di-phenyloxides, also diazoketones, unsaturated ketones, orthoand para-iminoquinone diazides, derivatives of alkyl-nitronaphthalenesulfonates, nitroaldehydes, acenaphthene,
  • Silver halide emulsions may also be used.
  • the subbing may be overcoated with a photoconductive layer having a high electrical resistance which can be charged and subsequently discharged by light or heat as in electrophotography, for example, low or high molecular weight organic photoconductors, also mixtures thereof with resins.
  • a photoconductive layer having a high electrical resistance which can be charged and subsequently discharged by light or heat as in electrophotography, for example, low or high molecular weight organic photoconductors, also mixtures thereof with resins.
  • Particularly suitable as photoconductors are oxadiazoles, imidazolones, triazole, oxazole, thiazoles, hydrozones, triazines, polyvinyl carbazole and polyvinyl oxazoles.
  • Useful resins may contain groups which tend to make the resins soluble in alkali, such groups include acid anhydride, carbonic acid, sulfonic acid, sulfonamide or sulfonimide groups, for example, polyvinyl polymers or mixed vinyl polymers, phthalic acid ester resins, alkyl resins, :rosins and polyacrylic acid resins.
  • the lithographic plates of the invention are further characterized by good adhesion and produce good removal of the unexposed areas so that they can produce a large number of copies.
  • FIG. 1 shows a grained aluminum sheet 3 having thereon a hydrophilic layer produced by treatment with a titanyl salt complex 2 and having thereon a light sensitive stabilized diazo resin 1.
  • FIG. 2 shows the structure of FIG. 1 following exposure to light and removal of the unexposed areas of the stabilized diazo resin.
  • Example 1 Titanyl silicofluaride A sheet of brush-grained aluminum having a thickness of 5 mils is immersed in a solution of titanium complex prepared by agitating vigorously a solution of 750 ml. of distilled Water in 50 ml. of 31.9% fiuosilicic acid, while 10 ml. of tetraisopropyl titanate is added rapidly in a fine stream. The aluminum is then passed between two mechanically driven inch diameter rubber rolls under sufficient pressure to remove the excess solution. A very thin film of solution is thus obtained which dries rapidly at room temperature. Similar coatings are obtained on other supports including polymeric materials, paper, metal, etc.
  • Example 2 Titanyl peroxyphosphate To 740 ml. of Water is added 10 ml. (18.3 g.) of percent phosphoric acid (0.1588 mol) and 30 ml. (33 g.) of 28 percent hydrogen peroxide (0.262 mol). Then with good agitation 10 ml. (9.55 g.) of tetraisopropyl titanate (0.0336 mol) is added. The result is an orange-yellow solution which is ready for coating. This solution is coated as in Example 1 to give a thin coating on the surface of the support.
  • Example 3 Preparatin of litany! fluoborate coating solution
  • the ortho ester hydrolyzes immediately forming a white percipitate which gradually redissolves forming a clear solution.
  • This solution is then coated on a grained aluminum sheet, dried, and sensitized with a dilute aqueous solution of diazo resin as in Example 5.
  • the titanyl fluoborate solution produces a suitable hydrophilic printing surface. Similar coatings are obtained on the supports of Example 1.
  • Example 4 a pertizanic acid coating composition Tetraisopropyl titanate is added to a dilute aqueous solution of hydrogen peroxide in the same manner as the previous example.
  • the white hydrolysis product rapidly turns yellow and gradually dissolves to produce a clear yellow solution.
  • a particularly useful composition for application as in Example 1 contains 0.045 mole per liter of titanium and 0.307 mole per liter of hydrogen peroxide.
  • the hydrophilic character of the surface obtained is enhanced by drying at an elevated temperature. Similar coatings are obtained on the supports of Example 1.
  • Example 5 Diaz0 resin A diazo resin is prepared by mixing 34 grams p-diazodiphenyl amine sulfate-zinc chloride double salt with 135 grams concentrated sulfuric acid which has been cooled to a temperature of C. The mixture is agitated while the temperature is maintained at less than 3C. while 3.25 grams paraformaldehyde, and 6.05 grams anhydrous cadmium chloride are added. The viscosity increases over a period of. approximately one-half hour and the mixture becomes homogeneous.
  • Example 6 The treated, grained aluminum of Examples 1 and 2 is then sensitized by immersing in a dilute 2%, aqueous solution of diazo resin, passed between two rubber rolls to remove the excess and dried. When exposed at approxi mately 24 inches through a negative with a high intensity 220 volt carbon arc in a NuAr-c Printer, the exposed portions are hardened.
  • the unexposed portions of the diazo resin are removed by washing with water.
  • the image is then lacquered with a commercially available image lacquer.
  • Presensitized plates prepared according to this example are found to have a shelf life for more than two years.
  • Example 7 Preparation of a preferred diazo resin sensitizer An 800 ml. beaker is equipped with a mechanically driven propeller type stirrer and external cooling is provided. To the reaction vessel is added 540 g. (5.35 moles) of 96 percent sulfuric acid followed by portionwise addition of 138 g. (0.377 mole) of Sensitizer DP (para-diazodiphenylamine sulfate-zinc chloride double salt, obtained from Fairmount Chemical Co.) with stirring at 25 to 35 C. until solution is complete. The mixture is then cooled and maintained at 0 C. during the gradual addition of 100 ml. (0.592 mole) of 40 percent fluoboric acid followed by the addition of 13.0 g.
  • Sensitizer DP para-diazodiphenylamine sulfate-zinc chloride double salt
  • Example 8 Prepa1rali0*n of a diazo resin sensitizer II In a 1500 ml. glass beaker was placed 1040 g. of 96 percent sulfuric acid. The beaker was suspended and equipped with a variable speed stirrer. The stirring acid was cooled below 0 C. with a Dry Ice-acetone bath.
  • the acid solution was poured over a mixture of 2200 g. of crushed ice and a solution of 1 lb. of cadmium chloride in 600 ml. of water with good agitation.
  • a 3 liter portion of isopropyl alcohol was added and the resultant slurry filtered.
  • the precipitate was slurried in 4 liters of water and 3 moles (624 g.) of barium chloride added.
  • the resultant precipitate was filtered off and subsequently extracted twice with three liter portions of 0 .75 M HF solution and a third time with 2 liters of distilled water.
  • the filtrates were combined and a solution of 1 lb. of cadmium chloride in 400 ml. added.
  • 8 liters of isopropyl alcohol were added and the slurry filtered.
  • the product was dried under vacuum at room temperature. The yield was 286 g.
  • Example 9 When the stabilized diazo coatings of Examples 6-8 are coated onto untreated grained aluminum sheet, they are found to have a shelf life for more than two years indicated stability of the resin layer without an undercoating. When the unstabilized zinc chloride double salt of the pdiazodiphenyl amine sulfate is coated over the treated aluminum plate, the shelf life is approximately three months.
  • the solutions used to remove the unhardened areas of the diazo resin are not critical. Water may be used, but aqueous gum solutions known in the art are also useful. It will be appreciated that other lacquers available commercially may also be used.
  • the diazo resins which may be used in our invention are prepared, stabilized and used in the dark or under yellow light. Therefore, when these resins are coated on the treated plate, the coating operation is carried out under appropriate safelight conditions.
  • Example 7 Example The treated grained aluminum of Examples 1 and 2 is sensitized by coating with light sensitive polymers using the whirler coating technique.
  • Kodak Photo Resist yields a clean appearing image. When inked, 50 press copies are obtained on the lithographic press.
  • Kodak Metal Etch Resist is developed by tray development followed by water wash-off and compressed air dried down to yield a robust, clean appearing image. The image is resistant to prolonged rubbing.
  • Light sensitive compositions of the type described in U.S. Patent 2,948,610 are swab developed with 0.5% sodium carbonate to yield adherent, ink-receptive images.
  • Azoplate Positop developed with Positop developer yields adherent robust images which show good press life.
  • Patent 3,043,802 are tray developed to yield clean, ink-receptive images.
  • a negative working wash-off light sensitive silver halide emulsion is transferred to the treated surface from the strippable support. After activation, the untanned gelatin is washed off.
  • a light sensitive silver halide emulsion comprising the first gelatin layer containing an oxidizing developer and a second layer containing light sensitive silver halide is coated on the treated support.
  • a satisfactory lithographic plate is obtained after activation and inking of the surface.
  • a presensitized planographic printing plate comprising a support having on at least one side a hydrophilic surface provided by coating with an aqueous solution consisting esesntially of a complex of an alkyl titanate and a solubilizing amount of at least one solubilizing component selected from the class consisting of fluosilicic acid, hydrofluoric acid, fluobo-ric acid, hydrogen peroxide and a mixture of hydrogen peroxide and phosphoric acid, and having thereon a light-sensitive coating.
  • a plate suitable for use in planographic printing and related uses comprising a support having on the surface a hydrophilic layer formed in situ from an aqueous coating composition consisting essentially of a complex of an alkyl titanate and at least one solubilizing compound selected from the class consisting of fluosilicic acid, hydrofluoric acid, fluoboric acid, hydrogen peroxide and a mixture of hydrogen peroxide and phosphoric acid.

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • General Physics & Mathematics (AREA)
  • Printing Plates And Materials Therefor (AREA)
  • Paints Or Removers (AREA)
  • Photosensitive Polymer And Photoresist Processing (AREA)
US347931A 1964-02-27 1964-02-27 Lithographic printing plate Expired - Lifetime US3342601A (en)

Priority Applications (23)

Application Number Priority Date Filing Date Title
US347931A US3342601A (en) 1964-02-27 1964-02-27 Lithographic printing plate
DEE28725A DE1299661B (de) 1964-02-27 1965-02-19 Verfahren zur Verbesserung der hydrophilen Eigenschaften der Traeger von fuer Flachdruckverfahren geeigneten Druckplatten
ES0309594A ES309594A1 (es) 1964-02-27 1965-02-20 Mejoras introducidas en la fabricacion de composiciones revestidoras para proveer una capa hidrofila.
BE660255A BE660255A (fr) 1964-02-27 1965-02-25
NL6502350A NL6502350A (fr) 1964-02-27 1965-02-25
AT169965A AT267552B (de) 1964-02-27 1965-02-26 Beschichtungszusammensetzung
CH267065A CH435335A (fr) 1964-02-27 1965-02-26 Composition de revêtement
AT57168A AT271509B (de) 1964-02-27 1965-02-26 Verfahren zur Herstellung von lithographischen Druckplatten
GB8295/65A GB1108559A (en) 1964-02-27 1965-02-26 Lithographic printing plate
NO156951A NO115071B (fr) 1964-02-27 1965-02-26
SE2495/65A SE315909B (fr) 1964-02-27 1965-02-26
DK103065AA DK124245B (da) 1964-02-27 1965-02-26 Titanholdigt overtræksmateriale til litografiske trykkeplader.
FR7087A FR1433616A (fr) 1964-02-27 1965-02-26 Plaque d'impression lithographique
GB38572/67A GB1108560A (en) 1964-02-27 1965-02-26 Preparation of a diazo resin salt
AT57568A AT274571B (de) 1964-02-27 1965-02-26 Verfahren zur Herstellung eines stabilen Salzes eines lichtempfindlichen Diazokunstharzes
ES0314254A ES314254A1 (es) 1964-02-27 1965-06-16 Mejoras introducidas en la fabricaciën de planchas que se prestan para ser usadas en la impresiën planografica
ES0314255A ES314255A1 (es) 1964-02-27 1965-06-16 Mejoras introducidas en la fabricacion de planchas presensibilizadas por impresion planografica.
US505041A US3486450A (en) 1964-02-27 1965-10-24 Color proofing system
US648036A US3417055A (en) 1964-02-27 1967-06-22 Process for preparation and separation of light sensitive stabilized diazo resins
US658559A US3419406A (en) 1964-02-27 1967-08-04 Coating compositions
NO16987267A NO124113B (fr) 1964-02-27 1967-09-26
SE8622/68A SE320385B (fr) 1964-02-27 1968-06-26
US871607A US3694251A (en) 1964-02-27 1969-11-14 Coated article having a layer of boehmite and alkyl titanate

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Application Number Priority Date Filing Date Title
US347931A US3342601A (en) 1964-02-27 1964-02-27 Lithographic printing plate

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US3342601A true US3342601A (en) 1967-09-19

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US347931A Expired - Lifetime US3342601A (en) 1964-02-27 1964-02-27 Lithographic printing plate

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AT (3) AT267552B (fr)
ES (3) ES309594A1 (fr)
FR (1) FR1433616A (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1925938A1 (de) * 1968-05-22 1970-01-15 Eastman Kodak Co Photographisches Material zur Herstellung von lithographischen Druckplatten
US3957489A (en) * 1968-09-11 1976-05-18 Gaf Corporation Solvent soluble diazonium metal salts and diazotype materials therefor
US4299907A (en) * 1978-08-10 1981-11-10 Polychrome Corporation Storage stable photosensitive diazo lithographic printing plates
US4640886A (en) * 1985-10-10 1987-02-03 Eastman Kodak Company Subbed lithographic printing plate
US5258263A (en) * 1991-09-10 1993-11-02 Polaroid Corporation Printing plate and methods of making and use same

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2825697A (en) * 1954-08-05 1958-03-04 American Chem Paint Co Method of and solution for the surface treatment of aluminum
US2950174A (en) * 1956-04-05 1960-08-23 Lagally Paul Preparation and stabilization of water soluble reactive titanium derivatives
US2983221A (en) * 1955-11-28 1961-05-09 Timefax Corp Planographic printing plates
US3017282A (en) * 1957-04-12 1962-01-16 Du Pont Stable, aqueous solutions of organic titanium compounds
US3061483A (en) * 1956-11-23 1962-10-30 Harold W Coles Coating of metal with layers of titanium esters and a polymer by exposure to high energy irradiation
US3073723A (en) * 1958-10-03 1963-01-15 Lithoplate Inc Resinous coatings adapted to receive a light-sensitive layer in the production of lithographic printing plates
US3110596A (en) * 1958-08-08 1963-11-12 Azoplate Corp Process for simultaneously developing and fixing printing plates
US3160506A (en) * 1962-10-19 1964-12-08 Polychrome Corp Planographic printing plate and method for preparing same
US3161521A (en) * 1962-03-30 1964-12-15 Technilith Inc Method of making lithographic printing plates
US3231376A (en) * 1960-12-09 1966-01-25 Harris Intertype Corp Lithographic printing surface
US3281243A (en) * 1965-12-08 1966-10-25 Harris Intertype Corp Lithographic printing surface

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2825697A (en) * 1954-08-05 1958-03-04 American Chem Paint Co Method of and solution for the surface treatment of aluminum
US2983221A (en) * 1955-11-28 1961-05-09 Timefax Corp Planographic printing plates
US2950174A (en) * 1956-04-05 1960-08-23 Lagally Paul Preparation and stabilization of water soluble reactive titanium derivatives
US3061483A (en) * 1956-11-23 1962-10-30 Harold W Coles Coating of metal with layers of titanium esters and a polymer by exposure to high energy irradiation
US3017282A (en) * 1957-04-12 1962-01-16 Du Pont Stable, aqueous solutions of organic titanium compounds
US3110596A (en) * 1958-08-08 1963-11-12 Azoplate Corp Process for simultaneously developing and fixing printing plates
US3073723A (en) * 1958-10-03 1963-01-15 Lithoplate Inc Resinous coatings adapted to receive a light-sensitive layer in the production of lithographic printing plates
US3231376A (en) * 1960-12-09 1966-01-25 Harris Intertype Corp Lithographic printing surface
US3161521A (en) * 1962-03-30 1964-12-15 Technilith Inc Method of making lithographic printing plates
US3160506A (en) * 1962-10-19 1964-12-08 Polychrome Corp Planographic printing plate and method for preparing same
US3281243A (en) * 1965-12-08 1966-10-25 Harris Intertype Corp Lithographic printing surface

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1925938A1 (de) * 1968-05-22 1970-01-15 Eastman Kodak Co Photographisches Material zur Herstellung von lithographischen Druckplatten
US3957489A (en) * 1968-09-11 1976-05-18 Gaf Corporation Solvent soluble diazonium metal salts and diazotype materials therefor
US4299907A (en) * 1978-08-10 1981-11-10 Polychrome Corporation Storage stable photosensitive diazo lithographic printing plates
US4640886A (en) * 1985-10-10 1987-02-03 Eastman Kodak Company Subbed lithographic printing plate
US5258263A (en) * 1991-09-10 1993-11-02 Polaroid Corporation Printing plate and methods of making and use same
US5407764A (en) * 1991-09-10 1995-04-18 Polaroid Corporation Printing plate and methods of making and using same

Also Published As

Publication number Publication date
ES314254A1 (es) 1966-05-01
ES314255A1 (es) 1966-02-16
AT271509B (de) 1969-06-10
ES309594A1 (es) 1965-12-16
AT267552B (de) 1969-01-10
FR1433616A (fr) 1966-04-01
AT274571B (de) 1969-09-25

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