EP0822462B1 - Procédé et dispositif d'impression par coagulation électrique - Google Patents
Procédé et dispositif d'impression par coagulation électrique Download PDFInfo
- Publication number
- EP0822462B1 EP0822462B1 EP97902708A EP97902708A EP0822462B1 EP 0822462 B1 EP0822462 B1 EP 0822462B1 EP 97902708 A EP97902708 A EP 97902708A EP 97902708 A EP97902708 A EP 97902708A EP 0822462 B1 EP0822462 B1 EP 0822462B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- positive electrode
- ink
- electrode active
- oily substance
- active surface
- 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
- 238000000034 method Methods 0.000 title claims description 15
- 230000015271 coagulation Effects 0.000 title claims description 5
- 238000005345 coagulation Methods 0.000 title claims description 5
- 239000000126 substance Substances 0.000 claims description 96
- 238000009297 electrocoagulation Methods 0.000 claims description 62
- 238000009826 distribution Methods 0.000 claims description 43
- 239000000758 substrate Substances 0.000 claims description 36
- 238000005524 ceramic coating Methods 0.000 claims description 20
- 239000000203 mixture Substances 0.000 claims description 18
- 239000011248 coating agent Substances 0.000 claims description 12
- 238000000576 coating method Methods 0.000 claims description 12
- 239000012071 phase Substances 0.000 claims description 9
- 229910052751 metal Inorganic materials 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 8
- 229910052574 oxide ceramic Inorganic materials 0.000 claims description 6
- 239000008346 aqueous phase Substances 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims description 2
- 239000007787 solid Substances 0.000 claims description 2
- 235000021122 unsaturated fatty acids Nutrition 0.000 claims description 2
- 150000004670 unsaturated fatty acids Chemical class 0.000 claims description 2
- 235000015112 vegetable and seed oil Nutrition 0.000 claims description 2
- 239000008158 vegetable oil Substances 0.000 claims description 2
- 239000000084 colloidal system Substances 0.000 description 24
- 239000003086 colorant Substances 0.000 description 15
- 238000004040 coloring Methods 0.000 description 9
- 230000015572 biosynthetic process Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 7
- 229910044991 metal oxide Inorganic materials 0.000 description 7
- 150000004706 metal oxides Chemical class 0.000 description 7
- 239000000049 pigment Substances 0.000 description 7
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 6
- 229920001971 elastomer Polymers 0.000 description 6
- 239000005060 rubber Substances 0.000 description 6
- 239000002270 dispersing agent Substances 0.000 description 5
- 239000006185 dispersion Substances 0.000 description 5
- 239000003921 oil Substances 0.000 description 5
- 235000019198 oils Nutrition 0.000 description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 4
- 239000003792 electrolyte Substances 0.000 description 4
- WRIDQFICGBMAFQ-UHFFFAOYSA-N (E)-8-Octadecenoic acid Natural products CCCCCCCCCC=CCCCCCCC(O)=O WRIDQFICGBMAFQ-UHFFFAOYSA-N 0.000 description 3
- LQJBNNIYVWPHFW-UHFFFAOYSA-N 20:1omega9c fatty acid Natural products CCCCCCCCCCC=CCCCCCCCC(O)=O LQJBNNIYVWPHFW-UHFFFAOYSA-N 0.000 description 3
- QSBYPNXLFMSGKH-UHFFFAOYSA-N 9-Heptadecensaeure Natural products CCCCCCCC=CCCCCCCCC(O)=O QSBYPNXLFMSGKH-UHFFFAOYSA-N 0.000 description 3
- 239000005642 Oleic acid Substances 0.000 description 3
- ZQPPMHVWECSIRJ-UHFFFAOYSA-N Oleic acid Natural products CCCCCCCCC=CCCCCCCCC(O)=O ZQPPMHVWECSIRJ-UHFFFAOYSA-N 0.000 description 3
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 description 3
- 229910000423 chromium oxide Inorganic materials 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 230000006866 deterioration Effects 0.000 description 3
- 239000000975 dye Substances 0.000 description 3
- 125000001475 halogen functional group Chemical group 0.000 description 3
- QXJSBBXBKPUZAA-UHFFFAOYSA-N isooleic acid Natural products CCCCCCCC=CCCCCCCCCC(O)=O QXJSBBXBKPUZAA-UHFFFAOYSA-N 0.000 description 3
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 description 3
- 235000021313 oleic acid Nutrition 0.000 description 3
- 229910052700 potassium Inorganic materials 0.000 description 3
- 238000007790 scraping Methods 0.000 description 3
- YWWVWXASSLXJHU-AATRIKPKSA-N (9E)-tetradecenoic acid Chemical compound CCCC\C=C\CCCCCCCC(O)=O YWWVWXASSLXJHU-AATRIKPKSA-N 0.000 description 2
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 2
- 244000099147 Ananas comosus Species 0.000 description 2
- 235000007119 Ananas comosus Nutrition 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 2
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 description 2
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid 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
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- YZXBAPSDXZZRGB-DOFZRALJSA-N arachidonic acid Chemical compound CCCCC\C=C/C\C=C/C\C=C/C\C=C/CCCC(O)=O YZXBAPSDXZZRGB-DOFZRALJSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 229910052804 chromium Inorganic materials 0.000 description 2
- 239000011651 chromium Substances 0.000 description 2
- 238000005868 electrolysis reaction Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- AMWRITDGCCNYAT-UHFFFAOYSA-L hydroxy(oxo)manganese;manganese Chemical compound [Mn].O[Mn]=O.O[Mn]=O AMWRITDGCCNYAT-UHFFFAOYSA-L 0.000 description 2
- KWGKDLIKAYFUFQ-UHFFFAOYSA-M lithium chloride Chemical compound [Li+].[Cl-] KWGKDLIKAYFUFQ-UHFFFAOYSA-M 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- SECPZKHBENQXJG-FPLPWBNLSA-N palmitoleic acid Chemical compound CCCCCC\C=C/CCCCCCCC(O)=O SECPZKHBENQXJG-FPLPWBNLSA-N 0.000 description 2
- -1 particularly Chemical class 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 229920002635 polyurethane Polymers 0.000 description 2
- 239000004814 polyurethane Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- OYHQOLUKZRVURQ-NTGFUMLPSA-N (9Z,12Z)-9,10,12,13-tetratritiooctadeca-9,12-dienoic acid Chemical compound C(CCCCCCC\C(=C(/C\C(=C(/CCCCC)\[3H])\[3H])\[3H])\[3H])(=O)O OYHQOLUKZRVURQ-NTGFUMLPSA-N 0.000 description 1
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- YWWVWXASSLXJHU-UHFFFAOYSA-N 9E-tetradecenoic acid Natural products CCCCC=CCCCCCCCC(O)=O YWWVWXASSLXJHU-UHFFFAOYSA-N 0.000 description 1
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 description 1
- 229920001817 Agar Polymers 0.000 description 1
- 102000009027 Albumins Human genes 0.000 description 1
- 108010088751 Albumins Proteins 0.000 description 1
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 1
- 108010076119 Caseins Proteins 0.000 description 1
- XZMCDFZZKTWFGF-UHFFFAOYSA-N Cyanamide Chemical compound NC#N XZMCDFZZKTWFGF-UHFFFAOYSA-N 0.000 description 1
- 108010010803 Gelatin Proteins 0.000 description 1
- 239000005909 Kieselgur Substances 0.000 description 1
- OYHQOLUKZRVURQ-HZJYTTRNSA-N Linoleic acid Chemical compound CCCCC\C=C/C\C=C/CCCCCCCC(O)=O OYHQOLUKZRVURQ-HZJYTTRNSA-N 0.000 description 1
- 229910021380 Manganese Chloride Inorganic materials 0.000 description 1
- GLFNIEUTAYBVOC-UHFFFAOYSA-L Manganese chloride Chemical compound Cl[Mn]Cl GLFNIEUTAYBVOC-UHFFFAOYSA-L 0.000 description 1
- 229910021586 Nickel(II) chloride Inorganic materials 0.000 description 1
- 235000021319 Palmitoleic acid Nutrition 0.000 description 1
- 235000019483 Peanut oil Nutrition 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 229920002125 Sokalan® Polymers 0.000 description 1
- 235000019486 Sunflower oil Nutrition 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000008272 agar Substances 0.000 description 1
- 235000010419 agar Nutrition 0.000 description 1
- 229910001508 alkali metal halide Inorganic materials 0.000 description 1
- 150000008045 alkali metal halides Chemical class 0.000 description 1
- 229910001615 alkaline earth metal halide Inorganic materials 0.000 description 1
- DTOSIQBPPRVQHS-PDBXOOCHSA-N alpha-linolenic acid Chemical compound CC\C=C/C\C=C/C\C=C/CCCCCCCC(O)=O DTOSIQBPPRVQHS-PDBXOOCHSA-N 0.000 description 1
- 235000020661 alpha-linolenic acid Nutrition 0.000 description 1
- 229940024548 aluminum oxide Drugs 0.000 description 1
- 235000019270 ammonium chloride Nutrition 0.000 description 1
- 229940114079 arachidonic acid Drugs 0.000 description 1
- 235000021342 arachidonic acid Nutrition 0.000 description 1
- QFFVPLLCYGOFPU-UHFFFAOYSA-N barium chromate Chemical compound [Ba+2].[O-][Cr]([O-])(=O)=O QFFVPLLCYGOFPU-UHFFFAOYSA-N 0.000 description 1
- 239000001110 calcium chloride Substances 0.000 description 1
- 229910001628 calcium chloride Inorganic materials 0.000 description 1
- 239000006229 carbon black Substances 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
- 238000005119 centrifugation Methods 0.000 description 1
- CETPSERCERDGAM-UHFFFAOYSA-N ceric oxide Chemical compound O=[Ce]=O CETPSERCERDGAM-UHFFFAOYSA-N 0.000 description 1
- 229940044927 ceric oxide Drugs 0.000 description 1
- 229910000422 cerium(IV) oxide Inorganic materials 0.000 description 1
- 229940035427 chromium oxide Drugs 0.000 description 1
- SECPZKHBENQXJG-UHFFFAOYSA-N cis-palmitoleic acid Natural products CCCCCCC=CCCCCCCCC(O)=O SECPZKHBENQXJG-UHFFFAOYSA-N 0.000 description 1
- 238000001246 colloidal dispersion Methods 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- VVOLVFOSOPJKED-UHFFFAOYSA-N copper phthalocyanine Chemical compound [Cu].N=1C2=NC(C3=CC=CC=C33)=NC3=NC(C3=CC=CC=C33)=NC3=NC(C3=CC=CC=C33)=NC3=NC=1C1=CC=CC=C12 VVOLVFOSOPJKED-UHFFFAOYSA-N 0.000 description 1
- ORTQZVOHEJQUHG-UHFFFAOYSA-L copper(II) chloride Chemical compound Cl[Cu]Cl ORTQZVOHEJQUHG-UHFFFAOYSA-L 0.000 description 1
- 239000002285 corn oil Substances 0.000 description 1
- 235000005687 corn oil Nutrition 0.000 description 1
- 229960004643 cupric oxide Drugs 0.000 description 1
- 238000010908 decantation Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011876 fused mixture Substances 0.000 description 1
- 229920000159 gelatin Polymers 0.000 description 1
- 239000008273 gelatin Substances 0.000 description 1
- 235000019322 gelatine Nutrition 0.000 description 1
- 235000011852 gelatine desserts Nutrition 0.000 description 1
- 150000004820 halides Chemical class 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 235000020778 linoleic acid Nutrition 0.000 description 1
- OYHQOLUKZRVURQ-IXWMQOLASA-N linoleic acid Natural products CCCCC\C=C/C\C=C\CCCCCCCC(O)=O OYHQOLUKZRVURQ-IXWMQOLASA-N 0.000 description 1
- 229960004488 linolenic acid Drugs 0.000 description 1
- KQQKGWQCNNTQJW-UHFFFAOYSA-N linolenic acid Natural products CC=CCCC=CCC=CCCCCCCCC(O)=O KQQKGWQCNNTQJW-UHFFFAOYSA-N 0.000 description 1
- 239000000944 linseed oil Substances 0.000 description 1
- 235000021388 linseed oil Nutrition 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- 229960000869 magnesium oxide Drugs 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- 239000011565 manganese chloride Substances 0.000 description 1
- 235000002867 manganese chloride Nutrition 0.000 description 1
- 229940099607 manganese chloride Drugs 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910001507 metal halide Inorganic materials 0.000 description 1
- 150000005309 metal halides Chemical class 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 229920005615 natural polymer Polymers 0.000 description 1
- QMMRZOWCJAIUJA-UHFFFAOYSA-L nickel dichloride Chemical compound Cl[Ni]Cl QMMRZOWCJAIUJA-UHFFFAOYSA-L 0.000 description 1
- 229960002969 oleic acid Drugs 0.000 description 1
- 239000004006 olive oil Substances 0.000 description 1
- 235000008390 olive oil Nutrition 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 239000000312 peanut oil Substances 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 229920002401 polyacrylamide Polymers 0.000 description 1
- 239000004584 polyacrylic acid Substances 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 239000001103 potassium chloride Substances 0.000 description 1
- 235000011164 potassium chloride Nutrition 0.000 description 1
- 239000012858 resilient material Substances 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000003549 soybean oil Substances 0.000 description 1
- 235000012424 soybean oil Nutrition 0.000 description 1
- 239000002600 sunflower oil Substances 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 229920001059 synthetic polymer Polymers 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/385—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective supply of electric current or selective application of magnetism to a printing or impression-transfer material
- B41J2/39—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective supply of electric current or selective application of magnetism to a printing or impression-transfer material using multi-stylus heads
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41C—PROCESSES FOR THE MANUFACTURE OR REPRODUCTION OF PRINTING SURFACES
- B41C1/00—Forme preparation
- B41C1/10—Forme preparation for lithographic printing; Master sheets for transferring a lithographic image to the forme
- B41C1/105—Forme preparation for lithographic printing; Master sheets for transferring a lithographic image to the forme by electrocoagulation, by electro-adhesion or by electro-releasing of material, e.g. a liquid from a gel
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/385—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective supply of electric current or selective application of magnetism to a printing or impression-transfer material
- B41J2/3855—Electrographic print heads using processes not otherwise provided for, e.g. electrolysis
Definitions
- the negative and positive electrodes, the positive electrode coating device, ink injector and soft rubber squeegee are arranged to define a printing unit and several printing units each using a coloring agent of different color are disposed in tandem relation to produce several differently colored images of coagulated colloid which are transferred at respective transfer stations onto the substrate in superimposed relation to provide the desired polychromic image.
- the printing units can be arranged around a single roller (a pressure roller) adapted to bring the substrate into contact with the dots of colored, coagulated colloid produced by each printing unit, and the substrate which is in the form of a continuous web is partially wrapped around the roller and passed through the respective transfer stations for being imprinted with the differently colored images in superimposed relation.
- an electrocoagulation printing apparatus comprising: a positive electrode made of an electrolytically inert metal and having a continuous passiavated surface as a positive electrode active surface moving along a predetermined path; an ink feeding part which supplies electrocoagulation printing ink onto said positive electrode active surface; a negative electrode for reproducing on said positive electrode active surface dots of coagulated ink by electrocoagulation; and a transfer part which brings a substrate into contact with the dots of coagulated ink to cause transfer of the dots of coagulated ink from said positive electrode active surface to said substrate; characterised by a fogging ink removing portion which supplies a first oily substance onto said positive electrode active surface and removes fogging ink mixed with the first oily substance from said positive electrode active surface without altering said dots of coagulated ink.
- a printing head 30 serving as negative electrodes is provided at the downstream side of the oiler 14 in the direction indicated by arrow A in Fig. 1, a predetermined distance apart from the surface 12B of the positive electrode (i.e., at a gap between the surface 12B and the printing head 30) and parallel to the revolving cylinder shaft 12A (i.e., in the longitudinal direction of the revolving cylinder shaft 12A).
- the printing head 30 is provided with a large number of negative electrodes (i.e., pin electrodes), not shown, of which tip ends are perpendicularly directed toward the surface 12B so as to obtain a resolution of at least 200dpi.
- the first squeegee 34 and the second squeegee 36 are each made from soft rubber having a wedge-shaped (acute-angled triangular) cross sectional configuration and extending along the direction parallel to the revolving cylinder 12 (i.e., the longitudinal direction of the cylinder 12). Respective acute angle portions of the squeegees 34, 36 are brought into slide-contact with the surface 12B.
- the oily substance supply port 38 is, in the same manner as the inker 32, disposed in the vicinity of the upper portion of the surface 12B by a predetermined distance apart the surface 12B so that the first oily substance 140 flows downward on the surface 12B due to its gravity,
- the basic structure of the oil cascade unit 40 is as shown in Fig. 1, but the oil cascade unit 40 is shown as a black box in Fig. 2.
- the second oily substance is applied onto the surface 12B of the positive electrode by the oiler 14 equipped with a distribution roller extending parallel to the revolving cylinder 12 and having a peripheral coating comprising an oxide ceramic material.
- the second oily substance is applied onto the ceramic coating to form a film of the second oily substance uniformly covering the surface of the ceramic coating, the film of the second oily substance breaks down into micro-droplets having substantially uniform size and distribution, and the micro-droplets are transferred from the ceramic coating onto the surface 12B of the positive electrode via a transfer roll.
- the micro-droplets of the second oily substance 100 transferred onto the positive electrode surface 12B by the second transfer roller 20 of the oiler 14 have substantially uniform distribution on the surface 12B.
- step S40 in Fig. 7 the non-coagulated ink not associated with the dots and the micro-droplets of the second oily substance are scraped from the positive electrode surface.
- the most part of the non-coagulated ink 110 is removed from the surface 12B by scraping the surface 12B with the first squeegee 34 and the dots 120 of coagulated ink are brought into a sufficiently uncovered state.
- the unscraped non-coagulated ink 110 and a portion of dots of the coagulated ink scraped by the squeegee remain, as the fogging ink 130, on the surface 12B.
- This state is shown in Fig. 3(D).
- the non-coagulated ink 110 removed by the first squeegee 34 is collected to be circulated as described above.
- the first oily substance is applied onto the surface of the positive electrode.
- the first oily substance 140 is continuously supplied onto the surface 12B of the positive electrode from the oily substance supply port 38.
- the first oily substance 140 may be of the same type as or the different type from the second oily substance.
- oleic acid which is the same as that used for the second oily substance is used for the first oily substance.
- Fig. 3(E) shows the state in which the first oily substance is supplied onto the surface 12B.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Dispersion Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Printing Methods (AREA)
- Battery Electrode And Active Subsutance (AREA)
- Printers Or Recording Devices Using Electromagnetic And Radiation Means (AREA)
Claims (14)
- Procédé d'impression par électrocoagulation, comprenant les étapes consistant à :(a) prévoir une électrode positive (12) formée d'un métal inerte du point de vue électrolytique et possédant une surface continue passivée en tant que surface active (12B) de l'électrode positive se déplaçant le long d'un trajet prédéterminé,(b) former sur ladite surface active (12B) de l'électrode positive une pluralité de points d'encre coagulée représentatifs d'une image désirée par électrocoagulation de l'encre d'impression par électrocoagulation (110);(c) placer un substrat (80) en contact avec lesdits points d'encre coagulée pour provoquer le transfert des points d'encre coagulée depuis la.surface active (12B) de l'électrode positive sur le substrat (80),
caractérisé en ce qu'entre les étapes (b) et (c):(d) on applique une première substance huileuse (140) sur ladite surface active (12B) de l'électrode positive pour mélanger la première substance huileuse (140) à une encre de voilement (130) dans une partie ne correspondant pas à l'image;(e) on retirer l'encre de voilement (130) mélangée à la première substance huileuse (140), de ladite partie ne correspondant pas à l'image de ladite surface active (12B) de l'électrode positive sans modification desdits points d'encre coagulée. - Procédé d'impression par électrocoagulation, pour lequel on applique le procédé d'impression par coagulation selon la revendication 1, selon lequel
on définit une pluralité d'étages d'impression, qui sont disposés en des emplacements prédéterminés le long dudit trajet, et lors de chaque utilisation d'une encre différente d'impression par électrocoagulation (110), on répète à plusieurs reprises les étapes (b), (d), (e) et (c), ce qui a pour effet que plusieurs images sont reproduites dans la partie de transfert respective sur ledit substrat (80). - Procédé d'impression par électrocoagulation selon la revendication 1 ou la revendication 2, caractérisé en ce que ladite première substance huileuse (140) est choisie dans le groupe comprenant des acides gras insaturés et des huiles végétales insaturées.
- Procédé d'impression par électrocoagulation selon la revendication 1 ou la revendication 2, caractérisé en ce que ladite étape (b) inclut les étapes consistant à :(i) prévoir une pluralité d'électrodes négatives inertes du point de vue électrolytique, qui sont isolées électriquement les unes des autres et sont disposées selon un alignement rectiligne pour définir une série de surfaces actives d'électrodes négatives correspondantes disposées dans un plan parallèle à l'axe longitudinal de ladite électrode positive (12) et en étant séparées de la surface active (12B) de l'électrode positive par un intervalle prédéterminé constant, lesdites électrodes négatives étant séparées les unes des autres par une distance au moins égale audit intervalle entre électrodes;(ii) recouvrir une surface active (12B) de l'électrode positive par une seconde substance huileuse pour former des micro-gouttelettes de la seconde substance huileuse sur ladite surface (12B);(iii) remplir ledit intervalle entre électrodes avec ladite encre d'impression par coagulation (110);(iv) activer électriquement des électrodes sélectionnées parmi lesdites électrodes négatives pour provoquer une coagulation sélective de l'encre d'impression par électrocoagulation (110) et l'adhérence de l'encre coagulée sur la surface active (12B) de l'électrode positive recouverte par la seconde substance huileuse à l'opposé des surfaces actives desdites électrodes négatives excitées, alors que ladite électrode positive (12) tourne, ce qui conduit à la formation de points de ladite encre coagulée; et(v) éliminer toute huile non coagulée restante de ladite surface active (12B) de l'électrode positive.
- Procédé d'impression par électrocoagulation selon la revendication 4, caractérisé en ce que ladite étape (b) (ii) inclut les étapes consistant à : prévoir des premier et second rouleaux de distribution (22,24) qui s'étendent parallèlement à ladite électrode positive (12) et comprennent chacun un revêtement périphérique comprenant un matériau céramique à base d'oxyde; appliquer ladite seconde substance huileuse au revêtement céramique dudit premier rouleau de distribution (22) pour former sur la surface de ce rouleau un film de ladite seconde substance huileuse recouvrant uniformément la surface dudit revêtement céramique, ledit film de la seconde substance huileuse se divisant partiellement en micro-gouttelettes possédant une taille et une distribution essentiellement uniformes; transférer le au moins un film divisé partiellement depuis ledit premier rouleau de distribution (22) audit second rouleau de distribution (24) de manière à amener ledit film à se diviser essentiellement complètement sur le revêtement céramique dudit second rouleau de distribution (24) pour former lesdites micro-gouttelettes ayant une taille et une distribution essentiellement uniformes; et transférer lesdites micro-gouttelettes depuis le revêtement céramique dudit second rouleau de distribution (24) à ladite surface active (12B) de l'électrode positive.
- Procédé d'impression par électrocoagulation selon l'une quelconque des revendications 1, 2 et 4, caractérisé en ce qu'un mélange de l'encre de voilement retirée de ladite surface active (12B) de l'électrode positive et de ladite première substance huileuse (140) est collecté, la première substance huileuse (140) est séparée du mélange collecté, et la première substance huileuse séparée (140) est appliquée à nouveau sur ladite surface active (12B) de l'électrode positive.
- Procédé d'impression par électrocoagulation selon la revendication 6, caractérisé en ce que ladite première substance huileuse (140) est séparée dudit mélange, par addition d'eau audit mélange pour former une phase aqueuse contenant ladite encre de voilement retirée (130) et une phase huileuse contenant ladite première substance huileuse (140), avec séparation de ladite phase huileuse par rapport à la phase aqueuse, filtrage de la phase huileuse séparée pour en éliminer des substances solides en suspension, et récupération de la phase huileuse filtrée pour sa réapplication sur ladite surface active (12B) de l'électrode positive.
- Dispositif d'impression par électrocoagulation (8), comprenant :une électrode positive (12) formée d'un métal inerte du point de vue électrolytique et possédant une surface continue passivée en tant que surface active (12B) de l'électrode positive, se déplaçant le long d'un trajet prédéterminé;une partie d'amenée d'encre (32) qui envoie de l'encre d'impression par électrocoagulation (110) à ladite surface active (12B) de l'électrode positive;une électrode négative pour reproduire, sur ladite surface active (12B) de l'électrode positive, des points d'encre coagulée par électrocoagulation; etune partie de transfert (70) qui place un substrat (80) en contact avec les points d'encre coagulée pour provoquer le transfert des points d'encre coagulée depuis ladite surface active (12B) de l'électrode positive audit substrat (80) ;
une partie (40) de réception de l'encre de voilement, qui envoie une première substance huileuse (140) à ladite partie ne correspondant pas à l'image de ladite surface active (12B) de l'électrode positive et retire l'encre de voilement (103) mélangée à la première substance lumineuse (140) à partir de ladite partie ne correspondant pas à l'image de ladite surface active (12B) de l'électrode positive, sans modification desdits points d'encre coagulée. - Dispositif d'impression par électrocoagulation (10) selon la revendication 8, caractérisé par une partie de revêtement (14) servant à recouvrir la surface active (12B) de l'électrode positive avec une seconde substance huileuse.
- Dispositif d'impression par électrocoagulation (10) selon la revendication 8, caractérisé par des moyens de circulation (44,46,52,54), dans lesquels un mélange de l'encre de voilement (130) retirée de ladite surface active (12B) de l'électrode positive et de la première substance huileuse (140) est collecté, la première substance huileuse (140) est séparée du mélange collecté, et la première substance huileuse séparée (140) est à nouveau appliquée à ladite surface active (12B) de l'électrode positive.
- Système d'impression par électrocoagulation comprenant :au moins une électrode positive (12,12') formée d'un métal inerte du point de vue électrolytique et possédant une surface continue passivée en tant que surface active (12B) de l'électrode positive, se déplaçant le long d'un trajet prédéterminé;une pluralité de parties d'amenée d'encre (32) qui envoient une encre d'impression par électrocoagulation (110) à ladite surface active (12B) de l'électrode positive;une pluralité d'électrodes négatives pour reproduire, sur ladite surface active (12B) de l'électrode positive, des points d'encre coagulée par électrocoagulation; etune pluralité de parties de transfert (70), qui placent un substrat (80) en contact avec les points d'encre coagulée de manière à provoquer le transfert des points d'encre coagulée depuis ladite surface active (12B) de l'électrode positive audit substrat (80);
- Système d'impression par électrocoagulation selon la revendication 11, comprenant une pluralité de postes d'impression (10), caractérisé en ce que chacun desdits postes d'impression (10) possède l'électrode positive (12), l'une de ladite pluralité de parties d'amenée d'encre (32), l'une de ladite pluralité d'électrodes négatives, l'une de ladite pluralité de parties (40) d'élimination de l'encre de voilement et l'une de ladite pluralité de parties de transfert (70).
- Système d'impression par électrocoagulation selon la revendication 11, comprenant une électrode positive (12') et une pluralité de postes d'impression (88), caractérisé en ce que chaque poste d'impression (88) comporte l'une de ladite pluralité de parties d'amenée d'encre (32), l'une de ladite pluralité d'électrodes négatives, l'une de ladite pluralité de parties (40) de retrait de l'encre de voilement, et l'une de ladite pluralité de parties de transfert (70), et caractérisé en outre en ce que ladite pluralité de postes d'impression (88) sont disposés le long du trajet de l'électrode positive (12').
- Système d'impression par électrocoagulation selon l'une quelconque des revendications 1 à 13, caractérisé par une partie de revêtement (14) servant à recouvrir la surface active (12B) de l'électrode positive au moyen d'une seconde substance huileuse.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA2169669 | 1996-02-16 | ||
CA 2169669 CA2169669C (fr) | 1996-02-16 | 1996-02-16 | Methode pour empecher la formation de parasites de fond sur les images imprimees par electrocoagulation |
PCT/JP1997/000418 WO1997030379A1 (fr) | 1996-02-16 | 1997-02-17 | Procede et dispositif d'impression par coagulation electrique |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0822462A1 EP0822462A1 (fr) | 1998-02-04 |
EP0822462A4 EP0822462A4 (fr) | 1999-05-06 |
EP0822462B1 true EP0822462B1 (fr) | 2003-05-02 |
Family
ID=4157588
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97902708A Expired - Lifetime EP0822462B1 (fr) | 1996-02-16 | 1997-02-17 | Procédé et dispositif d'impression par coagulation électrique |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0822462B1 (fr) |
AU (1) | AU1672997A (fr) |
CA (1) | CA2169669C (fr) |
DE (1) | DE69721409T2 (fr) |
WO (1) | WO1997030379A1 (fr) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA2224339C (fr) * | 1997-12-10 | 2003-02-11 | Pierre Castegnier | Systeme de tete d'impression pour appareil d'impression a electrocoagulation |
JP3067771B1 (ja) * | 1999-07-12 | 2000-07-24 | ヤマハ株式会社 | 印刷装置 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA1279603C (fr) * | 1986-02-20 | 1991-01-29 | Adrien Castegnier | Impression monochrome et polychrome d'une image reproduite par electrocoagulation d'un colloide |
CA1334017C (fr) * | 1989-04-12 | 1995-01-17 | Adrien Castegnier | Methode et appareil d'impression par electrocoagulation rapide |
-
1996
- 1996-02-16 CA CA 2169669 patent/CA2169669C/fr not_active Expired - Fee Related
-
1997
- 1997-02-17 EP EP97902708A patent/EP0822462B1/fr not_active Expired - Lifetime
- 1997-02-17 AU AU16729/97A patent/AU1672997A/en not_active Abandoned
- 1997-02-17 DE DE69721409T patent/DE69721409T2/de not_active Expired - Fee Related
- 1997-02-17 WO PCT/JP1997/000418 patent/WO1997030379A1/fr active IP Right Grant
Also Published As
Publication number | Publication date |
---|---|
EP0822462A4 (fr) | 1999-05-06 |
EP0822462A1 (fr) | 1998-02-04 |
WO1997030379A1 (fr) | 1997-08-21 |
CA2169669C (fr) | 2001-01-23 |
AU1672997A (en) | 1997-09-02 |
DE69721409T2 (de) | 2003-11-13 |
CA2169669A1 (fr) | 1997-08-17 |
DE69721409D1 (de) | 2003-06-05 |
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