US3028804A - Fountain solution for planographic printing - Google Patents
Fountain solution for planographic printing Download PDFInfo
- Publication number
- US3028804A US3028804A US827161A US82716159A US3028804A US 3028804 A US3028804 A US 3028804A US 827161 A US827161 A US 827161A US 82716159 A US82716159 A US 82716159A US 3028804 A US3028804 A US 3028804A
- Authority
- US
- United States
- Prior art keywords
- fountain solution
- printing
- fountain
- silicon dioxide
- plate
- 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
Links
- 238000007639 printing Methods 0.000 title description 21
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 60
- 239000000377 silicon dioxide Substances 0.000 claims description 28
- 235000012239 silicon dioxide Nutrition 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 10
- 239000000203 mixture Substances 0.000 claims description 10
- 230000008569 process Effects 0.000 claims description 10
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 9
- 238000007645 offset printing Methods 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 5
- 239000007900 aqueous suspension Substances 0.000 claims description 3
- 239000000243 solution Substances 0.000 description 43
- 239000000654 additive Substances 0.000 description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 6
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 6
- 239000005871 repellent Substances 0.000 description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 5
- 239000000725 suspension Substances 0.000 description 5
- 241000894006 Bacteria Species 0.000 description 4
- 230000000996 additive effect Effects 0.000 description 4
- 239000000976 ink Substances 0.000 description 4
- 239000003755 preservative agent Substances 0.000 description 4
- 230000002335 preservative effect Effects 0.000 description 4
- 229910002012 Aerosil® Inorganic materials 0.000 description 3
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 3
- LFVGISIMTYGQHF-UHFFFAOYSA-N ammonium dihydrogen phosphate Chemical compound [NH4+].OP(O)([O-])=O LFVGISIMTYGQHF-UHFFFAOYSA-N 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 235000010948 carboxy methyl cellulose Nutrition 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 235000011187 glycerol Nutrition 0.000 description 3
- 239000003230 hygroscopic agent Substances 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229910044991 metal oxide Inorganic materials 0.000 description 3
- 150000004706 metal oxides Chemical class 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 239000001509 sodium citrate Substances 0.000 description 3
- NLJMYIDDQXHKNR-UHFFFAOYSA-K sodium citrate Chemical group O.O.[Na+].[Na+].[Na+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O NLJMYIDDQXHKNR-UHFFFAOYSA-K 0.000 description 3
- 239000002562 thickening agent Substances 0.000 description 3
- 241000416162 Astragalus gummifer Species 0.000 description 2
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 2
- 229920000084 Gum arabic Polymers 0.000 description 2
- 229920001615 Tragacanth Polymers 0.000 description 2
- 235000010489 acacia gum Nutrition 0.000 description 2
- 239000000205 acacia gum Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 239000006172 buffering agent Substances 0.000 description 2
- 239000001768 carboxy methyl cellulose Substances 0.000 description 2
- 239000008112 carboxymethyl-cellulose Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000000084 colloidal system Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- -1 cyclic organic acids Chemical class 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 244000215068 Acacia senegal Species 0.000 description 1
- 239000004254 Ammonium phosphate Substances 0.000 description 1
- FBPFZTCFMRRESA-JGWLITMVSA-N D-glucitol Chemical compound OC[C@H](O)[C@@H](O)[C@H](O)[C@H](O)CO FBPFZTCFMRRESA-JGWLITMVSA-N 0.000 description 1
- 229920001353 Dextrin Polymers 0.000 description 1
- 239000004375 Dextrin Substances 0.000 description 1
- 244000165918 Eucalyptus papuana Species 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- 229920001938 Vegetable gum Polymers 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 235000010443 alginic acid Nutrition 0.000 description 1
- 229920000615 alginic acid Polymers 0.000 description 1
- ZRIUUUJAJJNDSS-UHFFFAOYSA-N ammonium phosphates Chemical class [NH4+].[NH4+].[NH4+].[O-]P([O-])([O-])=O ZRIUUUJAJJNDSS-UHFFFAOYSA-N 0.000 description 1
- 235000019289 ammonium phosphates Nutrition 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 150000001558 benzoic acid derivatives Chemical class 0.000 description 1
- 235000019846 buffering salt Nutrition 0.000 description 1
- 239000005018 casein Substances 0.000 description 1
- BECPQYXYKAMYBN-UHFFFAOYSA-N casein, tech. Chemical compound NCCCCC(C(O)=O)N=C(O)C(CC(O)=O)N=C(O)C(CCC(O)=N)N=C(O)C(CC(C)C)N=C(O)C(CCC(O)=O)N=C(O)C(CC(O)=O)N=C(O)C(CCC(O)=O)N=C(O)C(C(C)O)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=O)N=C(O)C(CCC(O)=O)N=C(O)C(COP(O)(O)=O)N=C(O)C(CCC(O)=N)N=C(O)C(N)CC1=CC=CC=C1 BECPQYXYKAMYBN-UHFFFAOYSA-N 0.000 description 1
- 235000021240 caseins Nutrition 0.000 description 1
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical class OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000002939 deleterious effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 239000000645 desinfectant Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 235000019425 dextrin Nutrition 0.000 description 1
- 150000008049 diazo compounds Chemical class 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000003301 hydrolyzing effect Effects 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 description 1
- 235000005985 organic acids Nutrition 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 150000002989 phenols Chemical class 0.000 description 1
- 239000010695 polyglycol Substances 0.000 description 1
- 229920000151 polyglycol Polymers 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 150000003873 salicylate salts Chemical class 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 230000001235 sensitizing effect Effects 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 235000013311 vegetables Nutrition 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 230000010148 water-pollination Effects 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
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
- This invention relates to improvements in aqueous fountain fluids which are employed in the process of planographic printing.
- Planographic printing involves the preparation of a master plate having Water-receptive non-print portions and water-repellent ink-receptive portions, constituting an image to be produced.
- the plate is moistened with an aqueous fountain fluid, repelled by the image, to render and maintain the'non-print portions of the plate ink-repellent, and is then inked with printing ink to deposit the same on the ink-receptive image portions.
- -ink is then transferred from the image, usually by an offset blanket to a copy sheet, to form an impression of the image thereon.
- the moistening, inking and transfer operations are successively repeated for the production of large numbers of copies.
- Plates to be employed in planographic printing are provided with a surface which is adapted to constitute the non-print background, and likewise adapted to receive and retain an ink-receptive water-repellent image.
- the latter is formed by inscribing the plate with an oleophilic image-forming composition, or by photographic processes, for example, by sensitizing the plate with a light-sensitive gelatin-bichromate coating or a light-sensitive diazo compound if desired in admixture with a resin which, upon exposure to light through a master is insolubilized and rendered ink-receptive, whereupon the unexposed portions are washed away, e.g. with water or an organic solvent exposing the underlying plate surface constituting the non-print background.
- Such plates can also be obtained by the electrophotographic process.
- the plates can be made of a metal, such as Zinc or aluminum of which the surface is modified as by etching or graining to render them Waterreceptive; or of materials such as vegetable parchment, which possess the desired hydrophilic as well as imageretaining properties; or the surface may be made of a hydrophilic insoluble colloid coating, such as casein formaldehyde, insolubilized polyvinyl alcohol, or insolubilized carboxymethyl cellulose compounds.
- an aqueous solution often referred to as an etch
- the solution containing ingredients adapted to moisten the non-print background portions of the plate and render them ink-repellent.
- a similar solution is employed in the fountain of the printing press for moistening the plate before each inking operation, the solution being compounded to maintain the non-print background of the plate ink-repellent and to prevent spreading of the image, While at the same time avoiding undermining of the image.
- the useful life of the plate for printing copies is largely dependent upon the maintenance by the action of the fountain fluid of a balance between the ink-receptive image portions and water-receptive non-print background portions so as to prevent encroachment of either upon the other.
- Solutions heretofore employed for moistening the plates, both as etch and as fountain solutions ordinarily included a colloid thickener such as gum arabic, gum tragacanth, or the like to impart desired properties, such as adherence to the. plate without undermining the image.
- a preservative such as phenol or a pheno ice PatentedApr. 1Q, 1962 to the image.
- colloidal thickeners commonly-employed in such solutions e.g. gum arabic, gum tragacanth, soluble starch and the like constitute excellent media in the aqueous mixtures in which they are employed, for the growth of molds, bacteriaand the like, which alter the properties of the solutions and render them useless for the intended purposes.
- carboxymethyl cellulose instead ofnatural thickeners improves the stability of such solutions against such bacteria.
- solutions which have soured or spoiled are applied to a printingplate, they can ruin the plate for further use, causing serious losses in time, effort and expense.
- the solutions can be manufactured and distributed in sealed containers under sterile conditions, they are subject to contamination as soon as they are opened and eX- posed to the air, necessitating constant use of fresh solutions and discarding of unused solution.
- aqueous plate dampening solu tions which contain highly dispersed silica instead of the products heretofore employed, are highly effective as fountain solutions in planographic printing. Thus, they maintain the desired balance between the'hydrophilie properties of the non-print background area and the inkreceptive water-repellent properties of the image over long. periods.
- the highly dispersed silica when used in such solutions is compatible with all of the other desired or usual ingredients, such as hygroscopic agents, buffering salts and other materials ordinarily employed in fountain solutions.
- the highly dispersed silica is resistant to the deleterious effect of molds, bacteria and the like.
- a preservative such as formaldehyde or a phenolic compound
- the printing inks dry more quickly so that waiting periods, which are involved in particular between the'printing of two difierent colors in multicolor work, are reduced.
- the printing inks do not penetrate] V so deeply into the'pap'er; long runs are obtained because the silica solutions are not harmful.
- Use of the fountain solution accordant with the invention makes it unnecessary for the printing plates to be regummed during intervals when printing is suspended. This elimination of plate gumming results in a considerable improvement for offset printing, particularly in the case of multicolor printing, where hitherto it has been necessary for a number of printing plates to be regummed at each interruption of printing.
- Highly dispersed silica suitable for the purpose of the invention is to be understood as silica (silicon dioxide) with an extremely fine average particle size of 5 to 40 millimicrons which is prepared commercially on a large scale by various processes, e.g. by hydrolizing silicon halides by means of water in the gas phase. Highly dispersed silica can be easily suspended in water without substantial sedimentation.
- the present invention also includes a fountain solution for offset printing in which a highly dispersed mixed oxide consisting of aluminum oxide and silicon dioxide is present instead of the highly dispersed silica.
- a highly dispersed mixed oxide consisting of aluminum oxide and silicon dioxide is present instead of the highly dispersed silica.
- Highl dispersed mixed oxides of this type are commercially available and are sold by the Degussa, Deutsche Goldund Silberscheide GmbH, Frankfurt am Main, for example They have also an average particle size of 5 to 40 millimicrons and are commercially available with a content of aluminum ranging from. about 1 to about 5 percent.
- the preferred mixed oxides substantially consist of silicon dioxide in the range from about 97% to 99.5% and aluminum oxide in the range from about 0.5 to about 3%.
- further additives may include water-soluble or water-miscible additives whose use in fountain solutions is already known.
- further additives of this sort are ammonium phosphates, e.g. primary ammonium phosphate, citric acid salts, e.g. tertiary sodium citrate, polyvalent alcohols, such as glycerine, glycol, sorbite, polyglycols, dextrins, alginates carboxymethyl celluloses and vegetable gums; these may be added separately or several together to metal omde suspensions accordant with the invention.
- the preferred further additives are primary ammonium phosphate and glycerine, a mixture thereof, or tertiary sodium citrate.
- the further additives are effective, the lower limit being not critical. At first, the effect rises with an increase in quantity. It is not favorable, however, to greatly exceed the amount of about 5 moles of further additives since no further increase of effect occurs. Preferably, not more than about 5 and not less than about 0.1 moles of additive to each mole of finely divided oxide are used.
- the quantity to be added in each case depends on the additive in question and on the kind of metal oxide used. It cannot be stated beforehand but must be determined by a test which is not difiicult to perform. In general, it
- a fountain solution very suitable for use in the planographic printing process is prepared from 975 cc. of water 25 cc. of an aqueous silica suspension containing 15% of finely divided silicon dioxide, e.g. the product available under the trade name K 315 Aerosil (registered trade mark of the Degussa Manual Goldund Silberscheideweg, Frankfurt am Main).
- the pH value of the fountain solution is 56.- It is used without further treatment as a fountain solution.
- a fountain solution for planographic printing is prepared from 500 cc. of water 250 cc. of a silica suspension containing 15% of finely divided silicon dioxide (cf. Example 1) 10 g. of primary ammonium phosphate 250 cc. of glycerine.
- the concentrated preparation given above is diluted with water to ten times its volume.
- the pH value is then between 5.0 and 5.5.
- Formaldehyde or another disinfectant may be added to the diluted solution.
- a fountain solution adapted for use in an offset printing process comprising an aqueous suspension of about 0.4 to about 6 percent of a mixture of finely divided silicon dioxide and finely divided aluminum oxide, the mixture containing about 97 to about 99.5 percent silicon dioxide and about 0.5 to about 3 percent of aluminum oxide and having an average particle size in the range of about 5 to about 40 millimicrons.
- a fountain solution according to claim 1 including, in addition, a hygroscopic agent.
- the improvement which comprises dampening the printing plate with a fountain solution comprising an aqueous suspension of about 0.4 to about 6 percent of a mixture of finely divided silicon dioxide and finely divided aluminum oxide, the mixture containing about 97 to 99.5 percent silicon dioxide and about 0.5 to about 3 percent of aluminum oxide and having an average particle size in the range of about 5 to about 40 millimicrons.
Landscapes
- Printing Plates And Materials Therefor (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEK35388A DE1105439B (de) | 1958-07-25 | 1958-07-25 | Feuchtwasser fuer den Offsetdruck |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US3028804A true US3028804A (en) | 1962-04-10 |
Family
ID=7220332
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US827161A Expired - Lifetime US3028804A (en) | 1958-07-25 | 1959-07-15 | Fountain solution for planographic printing |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US3028804A (enrdf_load_stackoverflow) |
| CH (1) | CH376133A (enrdf_load_stackoverflow) |
| DE (1) | DE1105439B (enrdf_load_stackoverflow) |
| FR (1) | FR1230247A (enrdf_load_stackoverflow) |
| GB (1) | GB876826A (enrdf_load_stackoverflow) |
| NL (2) | NL241477A (enrdf_load_stackoverflow) |
| SE (1) | SE220510C1 (enrdf_load_stackoverflow) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3227075A (en) * | 1961-04-04 | 1966-01-04 | Fitchburg Paper | Planographic printing plates |
| US3250214A (en) * | 1961-11-06 | 1966-05-10 | Dick Co Ab | Planographic printing |
| US3351008A (en) * | 1965-12-06 | 1967-11-07 | Dick Co Ab | Composition for treatment of imaged lithographic masters and method of use |
| JPS48101210A (enrdf_load_stackoverflow) * | 1972-04-07 | 1973-12-20 | ||
| US4548645A (en) * | 1983-12-21 | 1985-10-22 | Inmont Corporation | Lithographic water based fountain solution concentrates |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2286713A1 (fr) * | 1974-10-03 | 1976-04-30 | Kodak Pathe | Procede de preparation d'un produit lithographique |
| EP0924102B1 (en) * | 1997-12-19 | 2003-07-02 | Agfa-Gevaert | A method for lithographic printing by use of a lithographic printing plate provided by a heat sensitive non-ablatable wasteless imaging element and a fountain containing water-insoluble compounds |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2132443A (en) * | 1936-08-24 | 1938-10-11 | Francis L Simons | Planographic plate and method |
| US2156100A (en) * | 1936-08-24 | 1939-04-25 | Francis L Simons | Planographic printing plate and method of making the same |
| US2534650A (en) * | 1947-05-09 | 1950-12-19 | Warren S D Co | Planographic printing plate and method of making same |
| US2681617A (en) * | 1947-11-28 | 1954-06-22 | Warren S D Co | Planographic printing |
| US2780168A (en) * | 1951-11-16 | 1957-02-05 | John H Schneider | Composition for use in eliminating oil and grease smudges from offset printing mats and plates |
| US2833661A (en) * | 1952-11-28 | 1958-05-06 | Du Pont | Composition comprising water soluble organic polymer and colloidal silica and process of coating therewith |
-
0
- NL NL120975D patent/NL120975C/xx active
- NL NL241477D patent/NL241477A/xx unknown
-
1958
- 1958-07-25 DE DEK35388A patent/DE1105439B/de active Pending
-
1959
- 1959-07-10 CH CH7558959A patent/CH376133A/de unknown
- 1959-07-15 US US827161A patent/US3028804A/en not_active Expired - Lifetime
- 1959-07-16 FR FR800197A patent/FR1230247A/fr not_active Expired
- 1959-07-17 SE SE674559A patent/SE220510C1/sv unknown
- 1959-07-17 GB GB24686/59A patent/GB876826A/en not_active Expired
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2132443A (en) * | 1936-08-24 | 1938-10-11 | Francis L Simons | Planographic plate and method |
| US2156100A (en) * | 1936-08-24 | 1939-04-25 | Francis L Simons | Planographic printing plate and method of making the same |
| US2534650A (en) * | 1947-05-09 | 1950-12-19 | Warren S D Co | Planographic printing plate and method of making same |
| US2681617A (en) * | 1947-11-28 | 1954-06-22 | Warren S D Co | Planographic printing |
| US2780168A (en) * | 1951-11-16 | 1957-02-05 | John H Schneider | Composition for use in eliminating oil and grease smudges from offset printing mats and plates |
| US2833661A (en) * | 1952-11-28 | 1958-05-06 | Du Pont | Composition comprising water soluble organic polymer and colloidal silica and process of coating therewith |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3227075A (en) * | 1961-04-04 | 1966-01-04 | Fitchburg Paper | Planographic printing plates |
| US3250214A (en) * | 1961-11-06 | 1966-05-10 | Dick Co Ab | Planographic printing |
| US3351008A (en) * | 1965-12-06 | 1967-11-07 | Dick Co Ab | Composition for treatment of imaged lithographic masters and method of use |
| JPS48101210A (enrdf_load_stackoverflow) * | 1972-04-07 | 1973-12-20 | ||
| US4548645A (en) * | 1983-12-21 | 1985-10-22 | Inmont Corporation | Lithographic water based fountain solution concentrates |
Also Published As
| Publication number | Publication date |
|---|---|
| CH376133A (de) | 1964-03-31 |
| NL120975C (enrdf_load_stackoverflow) | |
| GB876826A (en) | 1961-09-06 |
| SE220510C1 (enrdf_load_stackoverflow) | 1968-05-14 |
| DE1105439B (de) | 1961-04-27 |
| FR1230247A (fr) | 1960-09-14 |
| NL241477A (enrdf_load_stackoverflow) |
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