US20070051637A1 - Anodization process of long-length aluminum plate, anodization apparatus and aluminum support for planographic printing plate material - Google Patents
Anodization process of long-length aluminum plate, anodization apparatus and aluminum support for planographic printing plate material Download PDFInfo
- Publication number
- US20070051637A1 US20070051637A1 US11/514,268 US51426806A US2007051637A1 US 20070051637 A1 US20070051637 A1 US 20070051637A1 US 51426806 A US51426806 A US 51426806A US 2007051637 A1 US2007051637 A1 US 2007051637A1
- Authority
- US
- United States
- Prior art keywords
- aluminum plate
- long
- length
- electric insulator
- anodization
- 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.)
- Abandoned
Links
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 117
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 117
- 238000002048 anodisation reaction Methods 0.000 title claims abstract description 62
- 238000000034 method Methods 0.000 title claims abstract description 51
- 239000000463 material Substances 0.000 title claims description 21
- 239000003989 dielectric material Substances 0.000 claims abstract description 53
- 239000003792 electrolyte Substances 0.000 claims abstract description 16
- 238000007743 anodising Methods 0.000 claims abstract description 9
- 239000008151 electrolyte solution Substances 0.000 claims description 38
- 230000005611 electricity Effects 0.000 abstract description 15
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 33
- 238000011282 treatment Methods 0.000 description 29
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 24
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 24
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 22
- 238000007788 roughening Methods 0.000 description 21
- 239000000243 solution Substances 0.000 description 20
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 16
- 229910017604 nitric acid Inorganic materials 0.000 description 16
- 239000002253 acid Substances 0.000 description 15
- 239000003513 alkali Substances 0.000 description 15
- 229920005989 resin Polymers 0.000 description 14
- 239000011347 resin Substances 0.000 description 14
- -1 acryl Chemical group 0.000 description 12
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 12
- 235000011121 sodium hydroxide Nutrition 0.000 description 11
- 239000000975 dye Substances 0.000 description 10
- WSFSSNUMVMOOMR-UHFFFAOYSA-N formaldehyde Substances O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 10
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 9
- 150000001875 compounds Chemical class 0.000 description 9
- 239000003921 oil Substances 0.000 description 9
- 238000005238 degreasing Methods 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 6
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 6
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 239000002245 particle Substances 0.000 description 6
- 239000007864 aqueous solution Substances 0.000 description 5
- 239000003795 chemical substances by application Substances 0.000 description 5
- 150000008049 diazo compounds Chemical class 0.000 description 5
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 4
- KRVSOGSZCMJSLX-UHFFFAOYSA-L chromic acid Substances O[Cr](O)(=O)=O KRVSOGSZCMJSLX-UHFFFAOYSA-L 0.000 description 4
- 238000004090 dissolution Methods 0.000 description 4
- 230000032050 esterification Effects 0.000 description 4
- 238000005886 esterification reaction Methods 0.000 description 4
- AWJWCTOOIBYHON-UHFFFAOYSA-N furo[3,4-b]pyrazine-5,7-dione Chemical compound C1=CN=C2C(=O)OC(=O)C2=N1 AWJWCTOOIBYHON-UHFFFAOYSA-N 0.000 description 4
- RLSSMJSEOOYNOY-UHFFFAOYSA-N m-cresol Chemical compound CC1=CC=CC(O)=C1 RLSSMJSEOOYNOY-UHFFFAOYSA-N 0.000 description 4
- IWDCLRJOBJJRNH-UHFFFAOYSA-N p-cresol Chemical compound CC1=CC=C(O)C=C1 IWDCLRJOBJJRNH-UHFFFAOYSA-N 0.000 description 4
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 3
- 150000001299 aldehydes Chemical class 0.000 description 3
- 239000002280 amphoteric surfactant Substances 0.000 description 3
- 238000009833 condensation Methods 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- 150000002148 esters Chemical class 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000006386 neutralization reaction Methods 0.000 description 3
- 239000002736 nonionic surfactant Substances 0.000 description 3
- 229920003986 novolac Polymers 0.000 description 3
- 150000004968 peroxymonosulfuric acids Chemical class 0.000 description 3
- 229920001568 phenolic resin Polymers 0.000 description 3
- 239000002002 slurry Substances 0.000 description 3
- QTWJRLJHJPIABL-UHFFFAOYSA-N 2-methylphenol;3-methylphenol;4-methylphenol Chemical compound CC1=CC=C(O)C=C1.CC1=CC=CC(O)=C1.CC1=CC=CC=C1O QTWJRLJHJPIABL-UHFFFAOYSA-N 0.000 description 2
- IKHGUXGNUITLKF-UHFFFAOYSA-N Acetaldehyde Chemical compound CC=O IKHGUXGNUITLKF-UHFFFAOYSA-N 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 2
- 239000004793 Polystyrene Substances 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical class [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 2
- 150000001412 amines Chemical class 0.000 description 2
- 150000001491 aromatic compounds Chemical group 0.000 description 2
- HRBFQSUTUDRTSV-UHFFFAOYSA-N benzene-1,2,3-triol;propan-2-one Chemical compound CC(C)=O.OC1=CC=CC(O)=C1O HRBFQSUTUDRTSV-UHFFFAOYSA-N 0.000 description 2
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 2
- 239000004327 boric acid Substances 0.000 description 2
- 230000001680 brushing effect Effects 0.000 description 2
- 150000001805 chlorine compounds Chemical class 0.000 description 2
- 239000007859 condensation product Substances 0.000 description 2
- 229930003836 cresol Natural products 0.000 description 2
- 125000000664 diazo group Chemical group [N-]=[N+]=[*] 0.000 description 2
- 238000005868 electrolysis reaction Methods 0.000 description 2
- 239000000839 emulsion Substances 0.000 description 2
- KWIUHFFTVRNATP-UHFFFAOYSA-N glycine betaine Chemical compound C[N+](C)(C)CC([O-])=O KWIUHFFTVRNATP-UHFFFAOYSA-N 0.000 description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- FDZZZRQASAIRJF-UHFFFAOYSA-M malachite green Chemical compound [Cl-].C1=CC(N(C)C)=CC=C1C(C=1C=CC=CC=1)=C1C=CC(=[N+](C)C)C=C1 FDZZZRQASAIRJF-UHFFFAOYSA-M 0.000 description 2
- 150000002823 nitrates Chemical class 0.000 description 2
- 235000006408 oxalic acid Nutrition 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 229920000915 polyvinyl chloride Polymers 0.000 description 2
- 239000004800 polyvinyl chloride Substances 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000003746 surface roughness Effects 0.000 description 2
- 229920002554 vinyl polymer Polymers 0.000 description 2
- JYEUMXHLPRZUAT-UHFFFAOYSA-N 1,2,3-triazine Chemical compound C1=CN=NN=C1 JYEUMXHLPRZUAT-UHFFFAOYSA-N 0.000 description 1
- KETQAJRQOHHATG-UHFFFAOYSA-N 1,2-naphthoquinone Chemical compound C1=CC=C2C(=O)C(=O)C=CC2=C1 KETQAJRQOHHATG-UHFFFAOYSA-N 0.000 description 1
- FKASFBLJDCHBNZ-UHFFFAOYSA-N 1,3,4-oxadiazole Chemical compound C1=NN=CO1 FKASFBLJDCHBNZ-UHFFFAOYSA-N 0.000 description 1
- XNWFRZJHXBZDAG-UHFFFAOYSA-N 2-METHOXYETHANOL Chemical compound COCCO XNWFRZJHXBZDAG-UHFFFAOYSA-N 0.000 description 1
- IVLXQGJVBGMLRR-UHFFFAOYSA-N 2-aminoacetic acid;hydron;chloride Chemical compound Cl.NCC(O)=O IVLXQGJVBGMLRR-UHFFFAOYSA-N 0.000 description 1
- 125000000022 2-aminoethyl group Chemical group [H]C([*])([H])C([H])([H])N([H])[H] 0.000 description 1
- ZRUOTKQBVMWMDK-UHFFFAOYSA-N 2-hydroxy-6-methylbenzaldehyde Chemical compound CC1=CC=CC(O)=C1C=O ZRUOTKQBVMWMDK-UHFFFAOYSA-N 0.000 description 1
- XLLXMBCBJGATSP-UHFFFAOYSA-N 2-phenylethenol Polymers OC=CC1=CC=CC=C1 XLLXMBCBJGATSP-UHFFFAOYSA-N 0.000 description 1
- DAUAQNGYDSHRET-UHFFFAOYSA-N 3,4-dimethoxybenzoic acid Chemical compound COC1=CC=C(C(O)=O)C=C1OC DAUAQNGYDSHRET-UHFFFAOYSA-N 0.000 description 1
- KSOWMDCLEHRQPH-UHFFFAOYSA-N 4-diazocyclohexa-1,5-dien-1-amine Chemical compound NC1=CCC(=[N+]=[N-])C=C1 KSOWMDCLEHRQPH-UHFFFAOYSA-N 0.000 description 1
- USFZMSVCRYTOJT-UHFFFAOYSA-N Ammonium acetate Chemical compound N.CC(O)=O USFZMSVCRYTOJT-UHFFFAOYSA-N 0.000 description 1
- 239000005695 Ammonium acetate Substances 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000004471 Glycine Substances 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 229930192627 Naphthoquinone Natural products 0.000 description 1
- IOVCWXUNBOPUCH-UHFFFAOYSA-M Nitrite anion Chemical compound [O-]N=O IOVCWXUNBOPUCH-UHFFFAOYSA-M 0.000 description 1
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical group CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 1
- ZCQWOFVYLHDMMC-UHFFFAOYSA-N Oxazole Chemical compound C1=COC=N1 ZCQWOFVYLHDMMC-UHFFFAOYSA-N 0.000 description 1
- ABLZXFCXXLZCGV-UHFFFAOYSA-N Phosphorous acid Chemical compound OP(O)=O ABLZXFCXXLZCGV-UHFFFAOYSA-N 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 239000004115 Sodium Silicate Substances 0.000 description 1
- IYFATESGLOUGBX-YVNJGZBMSA-N Sorbitan monopalmitate Chemical compound CCCCCCCCCCCCCCCC(=O)OC[C@@H](O)[C@H]1OC[C@H](O)[C@H]1O IYFATESGLOUGBX-YVNJGZBMSA-N 0.000 description 1
- 239000004147 Sorbitan trioleate Substances 0.000 description 1
- PRXRUNOAOLTIEF-ADSICKODSA-N Sorbitan trioleate Chemical compound CCCCCCCC\C=C/CCCCCCCC(=O)OC[C@@H](OC(=O)CCCCCCC\C=C/CCCCCCCC)[C@H]1OC[C@H](O)[C@H]1OC(=O)CCCCCCC\C=C/CCCCCCCC PRXRUNOAOLTIEF-ADSICKODSA-N 0.000 description 1
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 description 1
- GPVDHNVGGIAOQT-UHFFFAOYSA-N Veratric acid Natural products COC1=CC=C(C(O)=O)C(OC)=C1 GPVDHNVGGIAOQT-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- IJCWFDPJFXGQBN-RYNSOKOISA-N [(2R)-2-[(2R,3R,4S)-4-hydroxy-3-octadecanoyloxyoxolan-2-yl]-2-octadecanoyloxyethyl] octadecanoate Chemical compound CCCCCCCCCCCCCCCCCC(=O)OC[C@@H](OC(=O)CCCCCCCCCCCCCCCCC)[C@H]1OC[C@H](O)[C@H]1OC(=O)CCCCCCCCCCCCCCCCC IJCWFDPJFXGQBN-RYNSOKOISA-N 0.000 description 1
- 239000003082 abrasive agent Substances 0.000 description 1
- 125000002777 acetyl group Chemical class [H]C([H])([H])C(*)=O 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229940043376 ammonium acetate Drugs 0.000 description 1
- 235000019257 ammonium acetate Nutrition 0.000 description 1
- 239000000981 basic dye Substances 0.000 description 1
- VBICKXHEKHSIBG-UHFFFAOYSA-N beta-monoglyceryl stearate Natural products CCCCCCCCCCCCCCCCCC(=O)OCC(O)CO VBICKXHEKHSIBG-UHFFFAOYSA-N 0.000 description 1
- 229960003237 betaine Drugs 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052797 bismuth Inorganic materials 0.000 description 1
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 125000002915 carbonyl group Chemical group [*:2]C([*:1])=O 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- ZXJXZNDDNMQXFV-UHFFFAOYSA-M crystal violet Chemical compound [Cl-].C1=CC(N(C)C)=CC=C1[C+](C=1C=CC(=CC=1)N(C)C)C1=CC=C(N(C)C)C=C1 ZXJXZNDDNMQXFV-UHFFFAOYSA-M 0.000 description 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-O diazynium Chemical group [NH+]#N IJGRMHOSHXDMSA-UHFFFAOYSA-O 0.000 description 1
- SOCTUWSJJQCPFX-UHFFFAOYSA-N dichromate(2-) Chemical compound [O-][Cr](=O)(=O)O[Cr]([O-])(=O)=O SOCTUWSJJQCPFX-UHFFFAOYSA-N 0.000 description 1
- WMYWOWFOOVUPFY-UHFFFAOYSA-L dihydroxy(dioxo)chromium;phosphoric acid Chemical compound OP(O)(O)=O.O[Cr](O)(=O)=O WMYWOWFOOVUPFY-UHFFFAOYSA-L 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- JVICFMRAVNKDOE-UHFFFAOYSA-M ethyl violet Chemical compound [Cl-].C1=CC(N(CC)CC)=CC=C1C(C=1C=CC(=CC=1)N(CC)CC)=C1C=CC(=[N+](CC)CC)C=C1 JVICFMRAVNKDOE-UHFFFAOYSA-M 0.000 description 1
- PBRIXADXGMHVMW-UHFFFAOYSA-N formaldehyde;4-(2,4,4-trimethylpentan-2-yl)phenol Chemical compound O=C.CC(C)(C)CC(C)(C)C1=CC=C(O)C=C1 PBRIXADXGMHVMW-UHFFFAOYSA-N 0.000 description 1
- USEUJPGSYMRJHM-UHFFFAOYSA-N formaldehyde;4-methylphenol Chemical compound O=C.CC1=CC=C(O)C=C1 USEUJPGSYMRJHM-UHFFFAOYSA-N 0.000 description 1
- 229960002449 glycine Drugs 0.000 description 1
- 229960001269 glycine hydrochloride Drugs 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000003350 kerosene Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000011133 lead Substances 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 229940107698 malachite green Drugs 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 239000006224 matting agent Substances 0.000 description 1
- CXKWCBBOMKCUKX-UHFFFAOYSA-M methylene blue Chemical compound [Cl-].C1=CC(N(C)C)=CC2=[S+]C3=CC(N(C)C)=CC=C3N=C21 CXKWCBBOMKCUKX-UHFFFAOYSA-M 0.000 description 1
- 229960000907 methylthioninium chloride Drugs 0.000 description 1
- 150000002791 naphthoquinones Chemical class 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 125000000486 o-cresyl group Chemical group [H]C1=C([H])C(O*)=C(C([H])=C1[H])C([H])([H])[H] 0.000 description 1
- 150000002989 phenols Chemical class 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 229920001748 polybutylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 235000010482 polyoxyethylene sorbitan monooleate Nutrition 0.000 description 1
- 239000000244 polyoxyethylene sorbitan monooleate Substances 0.000 description 1
- 229920000053 polysorbate 80 Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- PYWVYCXTNDRMGF-UHFFFAOYSA-N rhodamine B Chemical compound [Cl-].C=12C=CC(=[N+](CC)CC)C=C2OC2=CC(N(CC)CC)=CC=C2C=1C1=CC=CC=C1C(O)=O PYWVYCXTNDRMGF-UHFFFAOYSA-N 0.000 description 1
- 229940043267 rhodamine b Drugs 0.000 description 1
- 239000010731 rolling oil Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 229910052911 sodium silicate Inorganic materials 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 235000011071 sorbitan monopalmitate Nutrition 0.000 description 1
- 239000001570 sorbitan monopalmitate Substances 0.000 description 1
- 229940031953 sorbitan monopalmitate Drugs 0.000 description 1
- 235000019337 sorbitan trioleate Nutrition 0.000 description 1
- 229960000391 sorbitan trioleate Drugs 0.000 description 1
- 239000001589 sorbitan tristearate Substances 0.000 description 1
- 235000011078 sorbitan tristearate Nutrition 0.000 description 1
- 229960004129 sorbitan tristearate Drugs 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 238000010189 synthetic method Methods 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- ROVRRJSRRSGUOL-UHFFFAOYSA-N victoria blue bo Chemical compound [Cl-].C12=CC=CC=C2C(NCC)=CC=C1C(C=1C=CC(=CC=1)N(CC)CC)=C1C=CC(=[N+](CC)CC)C=C1 ROVRRJSRRSGUOL-UHFFFAOYSA-N 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
- C25D11/02—Anodisation
- C25D11/04—Anodisation of aluminium or alloys based thereon
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
- C25D11/005—Apparatus specially adapted for electrolytic conversion coating
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D17/00—Constructional parts, or assemblies thereof, of cells for electrolytic coating
- C25D17/008—Current shielding devices
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D17/00—Constructional parts, or assemblies thereof, of cells for electrolytic coating
- C25D17/10—Electrodes, e.g. composition, counter electrode
Definitions
- the present invention relates to an anodization process of forming anodzation layer on the surface of a long-length aluminum plate, an anodization apparatus used in the anodization process, and an aluminum support for a planographic printing plate material manufactured according to an anodization process.
- the support for a planographic printing plate material is widely used an aluminum plate subjected to surface roughening treatment and anodization treatment, which provides good printing properties such as high water retention property or high printing durability.
- anodization treatment there is a method in which a long length metal plate is electrolytically treated by allowing the metal plate to travel in an electrolytic solution in which an electrode is provided and supplying current between the running metal plate and the electrode facing one side of the metal plate surface, wherein an electric insulator plate is provided on the side of the metal plate opposite the electrode in the region where the electrolytic treatment is carried out (refer to Patent Document 1, for example), or a method in which an anodization layer is formed on a long-length aluminum plate in an electrolytic solution of an electrolyte tank comprising a first electrode, a second electrode and a mobile electric insulator provided between the electrodes, wherein when the aluminum plate travels between the first electrode and the electric insulator, which prevents current from flowing between the aluminum plate and the electric insulator, an anodization layer is formed only on the surface of the aluminum plate facing the first electrode, and when the aluminum plate travels between the first electrode and the electric insulator and the insulator is moved so that current flows between the aluminum
- a method in which a long length sheet is provided between an anode and a cathode to form an anodization layer on the surface employs a coil alumite one side processing apparatus employing direct current electrolysis, the apparatus comprising an electrolyte tank containing an electrolytic solution, an electricity supply electrode providing a (+) electricity and an electrolytic electrode provided with a ( ⁇ ) electricity each being opposed to each other in the electrolytic solution, two slit plates, a slit between the slit plates, a long-length sheet to be processed traveling between the both electrodes and then through the slit, and a U-shaped mask separator provided to cover the both edges in the transverse direction of the sheet, wherein the distance between the end on the sheet surface side of the slit plate and the sheet surface is not more than several millimeters, the distance between the wall of the U-shaped separator and the sheet surface is about 1 mm, and the distance between the wall of the U-shaped separator and
- Patent Document 1 Japanese Patent O.P.I. Publication No. 57-47894.
- Patent Document 2 Japanese Patent Examined Publication No. 63-58233.
- Patent Document 3 Japanese Patent Examined Publication No. 58-24517.
- FIG. 1 ( a ) shows a side view of one embodiment in the anodization process of the present invention
- FIG. 1 ( b ) shows a cross-sectional view of an electrolyte tank in the anodization process
- FIG. 2 ( a ) shows the shape of the opening in the electric insulator
- FIG. 2 ( b ) shows a cross-sectional view of the electric insulator in FIG. 2 ( a ),
- FIG. 3 shows a side view of one example of conventional anodization apparatuses comprising an electricity supply tank.
- An anodization apparatus possessing an electrolyte tank charged with an electrolytic solution, and provided in the electrolytic solution, an anode, a cathode, an electric insulator with an opening that forms a current flow section, the electric insulator being provided between the anode and the cathode, and a long-length aluminum plate being provided between the cathode and the electric insulator, that is anodized by supplying current between the anode and the long-length aluminum plate through the current flow section, whereby an anodization layer is formed on the aluminum plate surface on the side facing the cathode,
- the opening is located at a position of at most 10% in width length from an outer side of the long-length aluminum plate with respect to the width length of the long-length aluminum plate, a part of the long-length aluminum plate is brought into contact with a part of the electric insulator, and the long-length aluminum plate and the electric insulator travel in uniform speed.
- a process of anodizing a long-length aluminum plate employing an anodization apparatus comprising an electrolyte tank charged with an electrolytic solution, and provided in the electrolytic solution, an anode, a cathode and an electric insulator with an opening that forms a current flow section, the electric insulator being provided between the anode and the cathode, possesses the steps of providing the long-length aluminum plate between the cathode and the electric insulator in the electrolytic solution; and anodizing the long-length aluminum plate by supplying current between the anode and the long-length aluminum plate through the current flow section, whereby an anodization layer is formed on the aluminum plate surface on the side facing the cathode, wherein the opening is located at a position of at most 10% in width length from an outer side of the long-length aluminum plate with respect to the width length of the long-length aluminum plate, a part of the long-length aluminum plate is
- the aluminum plate used in the invention is a long-length aluminum plate, and materials thereof may be pure aluminum or aluminum alloy.
- the aluminum alloy there can be used various ones including an alloy of aluminum and a metal such as silicon, copper, manganese, magnesium, chromium, zinc, lead, bismuth, nickel, titanium, sodium or iron. Further, an aluminum plate manufactured by rolling can be used.
- a regenerated aluminum plate obtained by rolling aluminum regenerated from scrapped or recycled materials, which has recently spread, can be also used.
- Surface-roughening (graining) of a long-length aluminum plate is preferably carried out prior to anodization in the invention. It is preferable that the aluminum plate is subjected to degreasing treatment for removing rolling oil prior to surface-roughening (graining).
- the degreasing treatments include degreasing treatment employing solvents such as trichlene and thinner, and an emulsion degreasing treatment employing an emulsion such as kerosene or triethanol. It is also possible to use an aqueous alkali solution such as caustic soda for the degreasing treatment. When an aqueous alkali solution such as caustic soda is used for the degreasing treatment, it is possible to remove soils and an oxidized film which can not be removed by the above-mentioned degreasing treatment alone.
- the resulting plate is preferably subjected to desmut treatment in an aqueous solution of an acid such as phosphoric acid, nitric acid, sulfuric acid, chromic acid, or a mixture thereof, since smut is produced on the surface.
- an acid such as phosphoric acid, nitric acid, sulfuric acid, chromic acid, or a mixture thereof, since smut is produced on the surface.
- surface-roughening treatment there are, for example, mechanical surface-roughening treatment and electrolytic surface-roughening treatment in an electrolyte solution containing hydrochloric acid or nitric acid as a main component.
- the brushing roughening method is carried out by rubbing the surface of the plate with a rotating brush with a brush hair with a diameter of 0.2-0.8 mm, while supplying slurry in which volcanic ash particles with a particle size of 10-100 ⁇ m are dispersed in water to the surface of the plate.
- the honing roughening method is carried out by ejecting obliquely slurry with pressure applied from nozzles to the surface of the plate, the slurry containing volcanic ash particles with a particle size of 10-100 ⁇ m dispersed in water.
- Surface-roughening can be also carried out by laminating the plate surface with a sheet on the surface of which abrading particles with a particle size of from 10 to 100 ⁇ m has been coated at intervals of 100-200 ⁇ m and at a density of 2.5 ⁇ 10 3 -10 ⁇ 10 3 /cm 2 , and then applying pressure to the laminated sheet to transfer the roughened pattern of the sheet, whereby the plate surface is roughened.
- the plate After the plate has been roughened mechanically, it is preferably dipped in an acid or an aqueous alkali solution in order to remove abrasives and aluminum dust, etc. which have been embedded in the surface of the support.
- the acid include sulfuric acid, persulfuric acid, hydrofluoric acid, phosphoric acid, nitric acid and hydrochloric acid
- the alkali include sodium hydroxide and potassium hydroxide.
- an aqueous solution of alkali chemicals such as sodium hydroxide is preferably used.
- the dissolution amount of aluminum in the plate surface is preferably 0.5-5 g/m 2 .
- the plate After the plate has been dipped in the aqueous alkali solution, it is preferable for the plate to be dipped in an acid such as phosphoric acid, nitric acid, sulfuric acid and chromic acid, or in a mixed acid thereof, for neutralization.
- an acid such as phosphoric acid, nitric acid, sulfuric acid and chromic acid, or in a mixed acid thereof, for neutralization.
- nitric acid electrolytic solution containing nitric acid
- voltage applied is generally 1-50 V, and preferably 10-30 V.
- the current density used can be selected from the range of 10-200 A/dm 2 , and is preferably 20-100 A/dm 2 .
- the quantity of electricity can be selected from the range of 100-2000 C/dm 2 , and is preferably 300-1500 C/dm 2 .
- the temperature during the electrolytic surface-roughening treatment may be in the range of 10-50° C., and is preferably 15-45° C.
- the nitric acid concentration in the nitric acid electrolytic solution is preferably 0.1-5% by weight. It is possible to optionally add, to the nitric acid electrolytic solution, nitrates, chlorides, amines, aldehydes, phosphoric acid, boric acid, acetic acid, oxalic acid or aluminum salts.
- the aluminum plate After the aluminum plate has been subjected to electrolytic surface-roughening treatment in the nitric acid electrolytic solution, it is preferably dipped in an acid or an aqueous alkali solution in order to remove aluminum dust, etc., which have been produced in the plate surface.
- the acid include sulfuric acid, persulfuric acid, hydrofluoric acid, phosphoric acid, nitric acid and hydrochloric acid
- the alkali include sodium hydroxide and potassium hydroxide.
- a phosphoric acid or sodium hydroxide aqueous solution is preferably used.
- the dissolution amount of aluminum in the plate surface is preferably 0.1-2 g/m 2 .
- the plate After the plate has been dipped in the aqueous alkali solution, it is preferable for the plate to be dipped in an acid such as phosphoric acid, nitric acid and sulfuric acid, or in a mixed acid thereof, for neutralization.
- the hydrochloric acid concentration in the hydrochloric acid electrolytic solution is 5-20 g/liter, and preferably 6-15 g/liter.
- the current density supplied is in the range of 15-200 A/dm 2 , and preferably 20 - 150 A/dm 2 .
- the quantity of electricity is in the range of 400-2000 C/dm 2 , and preferably 500-1500 C/dm 2 .
- Frequency is preferably in the range of 40-150 Hz.
- the temperature during the electrolytic surface-roughening treatment may be in the range of 10-50° C., and is preferably 15-45° C.
- hydrochloric acid electrolytic solution it is possible to optionally add, to the hydrochloric acid electrolytic solution, nitrates, chlorides, amines, aldehydes, phosphoric acid, chromic acid, boric acid, acetic acid, oxalic acid or aluminum salts.
- the aluminum plate After the aluminum plate has been subjected to electrolytic surface-roughening treatment in the hydrochloric acid electrolytic solution, it is preferably dipped in an acid or an aqueous alkali solution in order to remove aluminum dust, etc., which have been produced in the plate surface.
- the acid include sulfuric acid, persulfuric acid, hydrofluoric acid, phosphoric acid, nitric acid and hydrochloric acid
- the alkali include sodium hydroxide and potassium hydroxide.
- a phosphoric acid or sodium hydroxide aqueous solution is preferably used.
- the dissolution amount of aluminum in the plate surface is preferably 0.1-2 g/m 2 .
- the plate After the plate has been dipped in the aqueous alkali solution, it is preferable for the plate to be dipped in an acid such as phosphoric acid, nitric acid, sulfuric acid and chromic acid, or in a mixed acid thereof, for neutralization.
- an acid such as phosphoric acid, nitric acid, sulfuric acid and chromic acid, or in a mixed acid thereof, for neutralization.
- the average surface roughness (Ra) of the surface-roughened aluminum plate is preferably 0.3-0.8 ⁇ m.
- the average surface roughness can be adjusted by appropriately selecting surface roughening conditions such as concentration of the electrolytic solution used, current density supplied or electricity supplied.
- the anodization process of the present invention is preferably carried out after the surface-roughening treatment described above.
- FIG. 1 ( a ) shows a side view of one embodiment in the anodization process of the present invention, and of an electrolyte tank used in EXAMPLE.
- FIG. 1 ( b ) shows a cross-sectional view of FIG. 1 ( a ) at A - A′.
- FIG. 2 ( a ) is a plan view showing an example of the shape of an electric insulator, and
- FIG. 2 ( b ) shows a cross-sectional view of FIG. 2 ( a ) at B - B′.
- FIG. 3 shows a side view of one example of conventional anodization apparatuses including an electricity supply tank.
- long-length aluminum plate 1 is transported in electrolyte tank 3 filled with electrolytic solution 2 via a plurality of rollers 4 to be anodized.
- Long-length aluminum plate 1 travels between anode 5 and cathode 6 in electrolytic solution 2 , and anode 5 and cathode 6 are placed facing to each other.
- the current flow section of the present invention means the opening section provided in the area of electric insulator 8 facing long-length aluminum plate 1 .
- fixed electric insulator 7 is placed between long-length aluminum plate 1 and anode 5 .
- Electric insulator 8 of the present invention in the form of an endless belt is continuously transported via a plurality of rollers 4 , as shown in FIG. 1 ( a ).
- Belt side 10 is closely brought into contact with fixed electric insulator 7
- convexed section 11 is also closely brought into contact with long-length aluminum plate 1 . Openings produced in electric insulator 8 are served as current flow section 12 .
- Fixed electric insulator 7 contacts the wall of electrolyte tank 3 . That is, the electrolytic solution on the anode side and the electrolytic solution on the cathode side combine with each other only through the current flow section.
- the distance between the long-length aluminum plate and the anode is preferably 40-60 mm, in reducing loss of electric power.
- the thickness of the long-length aluminum plate is preferably 0.15-0.5 mm.
- the current density to be supplied onto the surface of the long-length aluminum plate is preferably 500-10000 A/m 2 .
- the traveling speed of the long-length aluminum plate is preferably 5-100 m/min, and more preferably 10-80 m/min.
- the shape of the current flow section i.e., the shape of the opening in the electric insulator
- the shape of the current flow section may be a slit in the form of FIG. 2 ( a ), and may also be a slit surrounded by straight lines provided in the electric insulator, a hole discontinuously provided in the electric insulator, or an opening such as holes in the network form.
- FIG. 2 ( b ) also shows a cross-sectional view of the electric insulator in FIG. 2 ( a ).
- the ratio of the total opening area to the total plan view area of electric insulator 8 is designated as an opening section area ratio.
- the above fixed electric insulator in the present invention refers to an insulator having a volume resistance of at least 10 15 ⁇ .
- examples thereof include a film of acryl resin, polyvinyl chloride, polypropylene, polybutylene, polyethylene, and polystyrene.
- Polyvinyl chloride film or polypropylene film, each having high strength, is preferably employed.
- Current density flowing through the current flow section is preferably 500-20000 A/m 2 .
- a titanium mesh or a platinum mesh can be used as material for the anode, and carbon or aluminum can be used as material for the cathode.
- FIG. 3 shows a side view of one embodiment of conventional anodization apparatuses.
- an electricity supply tank 31 including anode 5 is provided upstream an electrolytic tank 32 including cathode 6 .
- anodization speed becomes high, much current is necessary where it is necessary to provide two or three power supplies separately and lengthen the cathode.
- length of anodization process is restricted as anodization speed becomes high, since an aluminum plate to be anodized works as a resistance and current may be difficult to flow.
- the electrolytic solution employed in the present invention is preferably a sulfuric acid solution or an electrolytic solution containing sulfuric acid mainly (hereinafter also referred to as sulfuric acid electrolytic solution).
- the content of the sulfuric acid electrolytic solution is preferably 5-50% by weight, and more preferably 15-35% by weight.
- the temperature of the sulfuric acid electrolytic solution is preferably 10-50° C.
- Voltage applied during anodization is preferably at least 18V, and more preferably at least 20V.
- the amount of the anodization layer formed on the aluminum plate is preferably 1.5-4 g/m 2 , and more preferably 2-3 g/m 2 .
- the amount of the formed anodization layer can be obtained from the weight difference between the aluminum plates before and after dissolution of the anodization layer.
- the anodization layer of the aluminum plate is dissolved by being immersed at 90° C. for 5 minutes in for example, an aqueous phosphoric acid chromic acid solution, which is prepared by dissolving 35 ml of 85% by weight of phosphoric acid and 20 g of chromic acid anhydride in 1 liter of water.
- Micro pores are formed in the anodization layer.
- the micro pore density in the anodization layer is preferably 400-700/ ⁇ m 2 , and more preferably 400-600/ ⁇ m 2 .
- the aluminum plate which has been subjected to anodization treatment, is optionally subjected to sealing treatment.
- sealing treatment it is possible to use known methods using hot water, boiling water, steam, a sodium silicate solution, an aqueous dichromate solution, a nitrite solution, an ammonium acetate solution or polyvinyl phosphonic acid solution.
- the anodization process of the invention can be carried out employing an anodization apparatus comprising the electrolyte tank as described above and a means for supplying electricity to the electrolyte tank.
- the long-length aluminum plate is usable as a support for a planographic printing plate material
- a light sensitive planographic printing plate material can also be prepared by providing a light sensitive layer on the support for the planographic printing plate material of the present invention in which an aluminum plate has been subjected to anodization.
- the light sensitive layer herein is a layer which is capable of forming an image after imagewise exposure.
- a negative or positive working light sensitive layer which has been used for a light sensitive layer of PS plates, can be employed.
- ester of 1,2-diazonaphthoquinone sulfonic acid and pyrogallol-acetone resin is preferred which is disclosed in Japanese Patent Examined Publication No. 43-28403.
- Other preferred examples thereof include ester of 1,2-diazonaphthoquinone-5-sulfonic acid and phenol-formaldehyde resin as disclosed in U.S. Pat. Nos. 3,046,120 and 3,188,210, and ester of 1,2-diazonaphthoquinone-4-sulfonic acid and phenol-formaldehyde resin as disclosed in Japanese Patent O.P.I. Publication Nos.
- the o-quinonediazide compounds may be used alone, but is preferably used in combination with an alkali soluble resin (binder).
- an alkali soluble resin there are novolak resins, typically, phenol-formaldehyde resin, o-, m- or p-cresol-formaldehyde resin, and phenol/cresol (o-, m- or p-cresol, or m/p- or o/m-mixed cresol)-formaldehyde resin.
- o-quinonediazide compounds include phenol-modified xylene resin, polyhydroxystyrene, poly(halogenated hydroxystyrene), and acryl resins having a hydroxyl group as disclosed in Japanese Patent O.P.I. Publication No. 51-34711.
- the positive working light sensitive layer can contain non-ionic surfactants as disclosed in Japanese Patent O.P.I. Publication Nos. 62-251740 and 2-96760 or amphoteric surfactants as disclosed in Japanese Patent O.P.I. Publication Nos. 59-121044 and 4-13149.
- non-ionic surfactants examples include sorbitan tristearate, sorbitan monopalmitate, sorbitan trioleate, stearic acid monoglyceride, polyoxyethylene sorbitan monooleate, and polyoxyethylene nonylphenyl ether.
- amphoteric surfactants examples include alkyldi(aminoethyl)-glycine, alkylpoly(aminoethyl)glycine hydrochloride, 2-alkyl -N-carboxyethyl-N-hydroxyethylimidazolinium betaine, N -tetradecyl-N,N-betaine type compounds (for example, trade name: AMOGEN K produced by DAIICHI KOGYO CO., LTD.) and alkylimidazoline type compounds (for example, REBON 15 produced by SANYO CHEMICAL CO., LTD.).
- the content in the light sensitive layer of the non-ionic surfactants or amphoteric surfactants is preferably 0.05-15% by weight, and more preferably 0.1-5% by weight.
- a print-out agent for obtaining a visible image immediately after imagewise exposure or a dye or pigment as an image colorant can be added into the positive working light sensitive layer.
- print-out agent are combinations of compounds releasing an acid on exposure (photolytically acid-releasing agent) and organic dyes capable of forming a salt.
- specific examples of the combination include a combination of o-naphthoquinonediazide-4-sulfonic acid halide and a salt-forming organic dye described in Japanese Patent O.P.I. Publication Nos. 50-36209 and 53-8128, and a combination of a trihalomethyl compound and a salt-forming organic dye described in Japanese Patent O.P.I. Publication Nos. 53-36223, 54-74728, 60-3626, 61-143748, 61-151644 and 63-58440.
- trihalomethyl compound examples include oxazole-based compounds and triazine-based compounds, and any of these is excellent in stability over time and gives a clear print-out image.
- image coloration agent other dyes are also used other than the above-mentioned salt-forming organic dyes.
- suitable dye examples include oil-soluble dyes and basic dyes in addition to the salt-forming organic dyes.
- Oil Yellow #101, Oil Yellow #103, Oil Pink #312, Oil green BG, Oil Blue BOS, Oil Blue #603, Oil Black BY, Oil Black BS, Oil Black T-505 all of these are manufactured by Orient Chemical Industries, Ltd.), Victoria Pure Blue, Crystal Violet (CI42555), Methyl Violet (CI42535), Ethyl Violet, Rhodamine B (CI145170B), Malachite Green (CI42000) and Methylene Blue (CI52015).
- Particularly preferable dyes are those described in Japanese Patent O.P.I. Publication No. 62-293247.
- the negative working light sensitive layer there are a light sensitive layer containing a light sensitive diazo compound, a photopolymerizable light sensitive layer and a photo-crosslinking containing light sensitive layer.
- the light sensitive diazo compound is suitably used a diazo resin prepared by condensing an aromatic diazonium compound with a active carbonyl group-containing organic condensation agent, particularly aldehydes such as formaldehyde or acetaldehyde or acetals in an acidic medium. Typical examples thereof include a condensation product of p-diazophenylamine with formaldehyde.
- the synthetic method of these diazo resins is described in U.S. Pat. Nos. 2,679,498, 3,050,502, 3,311,605, and 3,277,074.
- the light sensitive diazo compound preferably is a co-condensation diazo compound comprising in the molecule an aromatic diazonium salt unit and a substituted aromatic compound unit containing no diazonium group described in Japanese Patent Examined Publication No. 49-48001, and further preferably a co-condensation diazo compound comprising in the molecule an aromatic diazonium salt unit and an aromatic compound unit having an alkali-solubilizing group such as a carboxyl group or a hydroxyl group.
- the light sensitive layer in the invention can contain the surfactant as denoted above in the positive working light sensitive layer in order to improve quality of the coated layer surface.
- a matting layer may be provided on the light sensitive layer in order to prevent blurring on exposure and shorten vacuum drawing time when contact exposure under vacuum is carried out.
- thermosensitive image formation layer can be employed which is used in a processless planographic printing plate material which requires no developing treatment.
- the light sensitive planographic printing plate material comprising the support of the invention is imagewise exposed and optionally subjected to developing treatment to obtain a planographic printing plate.
- a 0.24 mm thick aluminum plate(according to JIS 1050) was degreased at 60° C. for 10 seconds in a 5% sodium hydroxide solution, washed with water, immersed at 25° C. for 10 seconds in a 10% nitric acid solution to neutralize, and then washed with water.
- the aluminum plate was electrolytically surface-roughened at 30° C. for 10 seconds at a current density of 8 kA/m 2 in an aqueous solution containing 11 g/liter of hydrochloric acid, and 1.5 g/liter of dissolved aluminum, immersed in a 1% sodium hydroxide solution at 20° C. for 10 seconds, further immersed in a 10% nitric acid solution at 25° C. for 10 seconds to neutralize, and then washed with water to prepare supports 1-4. A weight of each anodization layer was 2.5 g/m 2 .
- the following positive light sensitive layer composition was coated on each of above-described supports 1 - 4 so as to give a dry coating amount of 2 g/m 2 to prepare a light sensitive planographic printing plate material sample.
- Esterification product (esterification rate: 20%) of a pyrogallol-acetone resin (weight average molecular weight: 2,500) with naphthoquinone(1,2) -diazide-(2)-5-sulfonylchloride 5 parts
- Novolak resin (weight average molecular weight: 20 parts 5,500): condensation product of mixed phenols (phenol/m-cresol/p-cresol, 5/57/38, weight ratio) and formaldehyde Esterification product(esterification rate: 50%) 0.25 parts of naphthoquinone(1,2)-diazide-(2)-5-sulfonylchloride and p-tert-octylphenol-formaldehyde novolak resin (weight average molecular weight: 1,800) 3,4-dimethoxybenzoic acid 1.25 parts 2-trichloromethyl-5-[b-(2-benzofuryl)vinyl]- 0.25 parts 1,3,4-oxadiazole Bi
- the resulting light sensitive planographic printing plate material sample was imagewise exposed and developed to prepare a planographic printing plate.
- printing was carried out and printed matter with good image quality was obtained.
- the present invention is possible to provide an anodization process of a long-length aluminum plate, which reduces loss of electricity, to provide an anodization apparatus used in the anodization process, and to provide a support for a printing plate material manufactured according to the anodization process.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Printing Plates And Materials Therefor (AREA)
Abstract
An object of the present invention is to provide a process of anodizing a long-length aluminum plate, which reduces loss of electricity. Also disclosed is an anodization process of the above plate, employing an anodization apparatus possessing an electrolyte tank, an anode, a cathode and an electric insulator with an opening forming a current flow section, the process possessing the steps of providing the plate between the cathode and the electric insulator; and anodizing the plate by supplying current between the anode and the long-length aluminum plate, wherein the opening is located at a position of at most 10% in width length from an outer side of the plate with respect to the width length of the plate, a part of the plate is brought into contact with a part of the electric insulator, and the plate and the electric insulator travel in uniform speed.
Description
- This application claims priority from Japanese Patent Application No. 2005-259086 filed on Sep. 7, 2005, which is incorporated hereinto by reference.
- The present invention relates to an anodization process of forming anodzation layer on the surface of a long-length aluminum plate, an anodization apparatus used in the anodization process, and an aluminum support for a planographic printing plate material manufactured according to an anodization process.
- It is well known that an aluminum plate is used as a support for a planographic printing plate material.
- As the support for a planographic printing plate material is widely used an aluminum plate subjected to surface roughening treatment and anodization treatment, which provides good printing properties such as high water retention property or high printing durability.
- As the anodization treatment above, there is a method in which a long length metal plate is electrolytically treated by allowing the metal plate to travel in an electrolytic solution in which an electrode is provided and supplying current between the running metal plate and the electrode facing one side of the metal plate surface, wherein an electric insulator plate is provided on the side of the metal plate opposite the electrode in the region where the electrolytic treatment is carried out (refer to Patent Document 1, for example), or a method in which an anodization layer is formed on a long-length aluminum plate in an electrolytic solution of an electrolyte tank comprising a first electrode, a second electrode and a mobile electric insulator provided between the electrodes, wherein when the aluminum plate travels between the first electrode and the electric insulator, which prevents current from flowing between the aluminum plate and the electric insulator, an anodization layer is formed only on the surface of the aluminum plate facing the first electrode, and when the aluminum plate travels between the first electrode and the electric insulator and the insulator is moved so that current flows between the aluminum plate and the second electrode, an anodization layer is formed on both surfaces of the aluminum plate (refer to
Patent Document 2, for example). - Further, there is a method in which a long length sheet is provided between an anode and a cathode to form an anodization layer on the surface. For example, a method is known which employs a coil alumite one side processing apparatus employing direct current electrolysis, the apparatus comprising an electrolyte tank containing an electrolytic solution, an electricity supply electrode providing a (+) electricity and an electrolytic electrode provided with a (−) electricity each being opposed to each other in the electrolytic solution, two slit plates, a slit between the slit plates, a long-length sheet to be processed traveling between the both electrodes and then through the slit, and a U-shaped mask separator provided to cover the both edges in the transverse direction of the sheet, wherein the distance between the end on the sheet surface side of the slit plate and the sheet surface is not more than several millimeters, the distance between the wall of the U-shaped separator and the sheet surface is about 1 mm, and the distance between the wall of the U-shaped separator and the sheet end is not more than several millimeters, and wherein current for electrolysis flows in the thickness direction of the long length sheet (refer to
Patent Document 3, for example). - However, these methods result in much loss of electricity, and effective anodization of an aluminum plate has been desired.
- (Patent Document 1) Japanese Patent O.P.I. Publication No. 57-47894.
- (Patent Document 2) Japanese Patent Examined Publication No. 63-58233.
- (Patent Document 3) Japanese Patent Examined Publication No. 58-24517.
- It is an object of the present invention to provide a process of anodizing a long-length aluminum plate, which reduces loss of electricity, to provide an anodization apparatus used in the anodization process, and to provide a support for a printing plate material manufactured according to the anodization process.
- Embodiments will now be described, by way of example only, with reference to the accompanying drawings which are meant to be exemplary, not limiting, and wherein like elements numbered alike in several figures, in which:
-
FIG. 1 (a) shows a side view of one embodiment in the anodization process of the present invention, -
FIG. 1 (b) shows a cross-sectional view of an electrolyte tank in the anodization process, -
FIG. 2 (a) shows the shape of the opening in the electric insulator, -
FIG. 2 (b) shows a cross-sectional view of the electric insulator inFIG. 2 (a), and -
FIG. 3 shows a side view of one example of conventional anodization apparatuses comprising an electricity supply tank. - The above object of the present invention is accomplished by the following structures.
- (Structure 1) A process of anodizing a long-length aluminum plate, employing an anodization apparatus possessing an electrolyte tank charged with an electrolytic solution, and provided in the electrolytic solution, an anode, a cathode and an electric insulator with an opening that forms a current flow section, the electric insulator being provided between the anode and the cathode, the process possessing the steps of providing the long-length aluminum plate between the cathode and the electric insulator in the electrolytic solution and anodizing the long-length aluminum plate by supplying current between the anode and the long-length aluminum plate through the current flow section, whereby an anodization layer is formed on the aluminum plate surface on the side facing the cathode, wherein the opening is located at a position of at most 10% in width length from an outer side of the long-length aluminum plate with respect to the width length of the long-length aluminum plate, a part of the long-length aluminum plate is brought into contact with a part of the electric insulator, and the long-length aluminum plate and the electric insulator travel in uniform speed.
- (Structure 2) The process of Structure 1, wherein the process possesses further a step of rotating the electric insulator via a plurality of rollers.
- (Structure 3) The process of Structure 1, wherein the long-length aluminum plate is a support for a planographic printing plate material.
- (Structure 4) The process of Structure 1, wherein a traveling speed of the long-length aluminum plate is 5-100 m/min.
- (Structure 5) The process of Structure 1, wherein an amount of the anodization layer is 1.5-4 g/m2.
- (Structure 6) The process of Structure 1, wherein a distance between the long-length aluminum plate and the anode is 40-60 mm.
- (Structure 7) The process of Structure 1, wherein a thickness of the long-length aluminum plate is 0.15-0.50 mm.
- (Structure 8) An anodization apparatus possessing an electrolyte tank charged with an electrolytic solution, and provided in the electrolytic solution, an anode, a cathode, an electric insulator with an opening that forms a current flow section, the electric insulator being provided between the anode and the cathode, and a long-length aluminum plate being provided between the cathode and the electric insulator, that is anodized by supplying current between the anode and the long-length aluminum plate through the current flow section, whereby an anodization layer is formed on the aluminum plate surface on the side facing the cathode,
- wherein the opening is located at a position of at most 10% in width length from an outer side of the long-length aluminum plate with respect to the width length of the long-length aluminum plate, a part of the long-length aluminum plate is brought into contact with a part of the electric insulator, and the long-length aluminum plate and the electric insulator travel in uniform speed.
- While the preferred embodiments of the present invention have been described using specific terms, such description is for illustrative purposes only, and it is to be understood that changes and variations may be made without departing from the spirit or scope of the appended claims.
- The present invention will be further explained in detail. It is a feature of the present invention that a process of anodizing a long-length aluminum plate, employing an anodization apparatus comprising an electrolyte tank charged with an electrolytic solution, and provided in the electrolytic solution, an anode, a cathode and an electric insulator with an opening that forms a current flow section, the electric insulator being provided between the anode and the cathode, possesses the steps of providing the long-length aluminum plate between the cathode and the electric insulator in the electrolytic solution; and anodizing the long-length aluminum plate by supplying current between the anode and the long-length aluminum plate through the current flow section, whereby an anodization layer is formed on the aluminum plate surface on the side facing the cathode, wherein the opening is located at a position of at most 10% in width length from an outer side of the long-length aluminum plate with respect to the width length of the long-length aluminum plate, a part of the long-length aluminum plate is brought into contact with a part of the electric insulator, and the long-length aluminum plate and the electric insulator travel in uniform speed.
- (Long-Length Aluminum Plate)
- The aluminum plate used in the invention is a long-length aluminum plate, and materials thereof may be pure aluminum or aluminum alloy.
- As the aluminum alloy, there can be used various ones including an alloy of aluminum and a metal such as silicon, copper, manganese, magnesium, chromium, zinc, lead, bismuth, nickel, titanium, sodium or iron. Further, an aluminum plate manufactured by rolling can be used.
- A regenerated aluminum plate obtained by rolling aluminum regenerated from scrapped or recycled materials, which has recently spread, can be also used.
- (Anodization)
- Surface-roughening (graining) of a long-length aluminum plate is preferably carried out prior to anodization in the invention. It is preferable that the aluminum plate is subjected to degreasing treatment for removing rolling oil prior to surface-roughening (graining).
- The degreasing treatments include degreasing treatment employing solvents such as trichlene and thinner, and an emulsion degreasing treatment employing an emulsion such as kerosene or triethanol. It is also possible to use an aqueous alkali solution such as caustic soda for the degreasing treatment. When an aqueous alkali solution such as caustic soda is used for the degreasing treatment, it is possible to remove soils and an oxidized film which can not be removed by the above-mentioned degreasing treatment alone. When an aqueous alkali solution such as caustic soda is used for the degreasing treatment, the resulting plate is preferably subjected to desmut treatment in an aqueous solution of an acid such as phosphoric acid, nitric acid, sulfuric acid, chromic acid, or a mixture thereof, since smut is produced on the surface.
- Subsequently, surface-roughening treatment is carried out. As the surface-roughening treatment, there are, for example, mechanical surface-roughening treatment and electrolytic surface-roughening treatment in an electrolyte solution containing hydrochloric acid or nitric acid as a main component.
- Though there is no restriction for the mechanical surface-roughening method, a brushing roughening method and a honing roughening method are preferable. The brushing roughening method is carried out by rubbing the surface of the plate with a rotating brush with a brush hair with a diameter of 0.2-0.8 mm, while supplying slurry in which volcanic ash particles with a particle size of 10-100 μm are dispersed in water to the surface of the plate. The honing roughening method is carried out by ejecting obliquely slurry with pressure applied from nozzles to the surface of the plate, the slurry containing volcanic ash particles with a particle size of 10-100 μm dispersed in water. Surface-roughening can be also carried out by laminating the plate surface with a sheet on the surface of which abrading particles with a particle size of from 10 to 100 μm has been coated at intervals of 100-200 μm and at a density of 2.5×103-10×103/cm2, and then applying pressure to the laminated sheet to transfer the roughened pattern of the sheet, whereby the plate surface is roughened.
- After the plate has been roughened mechanically, it is preferably dipped in an acid or an aqueous alkali solution in order to remove abrasives and aluminum dust, etc. which have been embedded in the surface of the support. Examples of the acid include sulfuric acid, persulfuric acid, hydrofluoric acid, phosphoric acid, nitric acid and hydrochloric acid, and examples of the alkali include sodium hydroxide and potassium hydroxide. Among those mentioned above, an aqueous solution of alkali chemicals such as sodium hydroxide is preferably used. The dissolution amount of aluminum in the plate surface is preferably 0.5-5 g/m2. After the plate has been dipped in the aqueous alkali solution, it is preferable for the plate to be dipped in an acid such as phosphoric acid, nitric acid, sulfuric acid and chromic acid, or in a mixed acid thereof, for neutralization.
- In the electrolytic surface-roughening treatment carried out in the electrolytic solution (hereinafter also referred to as nitric acid electrolytic solution) containing nitric acid, voltage applied is generally 1-50 V, and preferably 10-30 V. The current density used can be selected from the range of 10-200 A/dm2, and is preferably 20-100 A/dm2. The quantity of electricity can be selected from the range of 100-2000 C/dm2, and is preferably 300-1500 C/dm2. The temperature during the electrolytic surface-roughening treatment may be in the range of 10-50° C., and is preferably 15-45° C. The nitric acid concentration in the nitric acid electrolytic solution is preferably 0.1-5% by weight. It is possible to optionally add, to the nitric acid electrolytic solution, nitrates, chlorides, amines, aldehydes, phosphoric acid, boric acid, acetic acid, oxalic acid or aluminum salts.
- After the aluminum plate has been subjected to electrolytic surface-roughening treatment in the nitric acid electrolytic solution, it is preferably dipped in an acid or an aqueous alkali solution in order to remove aluminum dust, etc., which have been produced in the plate surface. Examples of the acid include sulfuric acid, persulfuric acid, hydrofluoric acid, phosphoric acid, nitric acid and hydrochloric acid, and examples of the alkali include sodium hydroxide and potassium hydroxide. Among those mentioned above, a phosphoric acid or sodium hydroxide aqueous solution is preferably used. The dissolution amount of aluminum in the plate surface is preferably 0.1-2 g/m2 . After the plate has been dipped in the aqueous alkali solution, it is preferable for the plate to be dipped in an acid such as phosphoric acid, nitric acid and sulfuric acid, or in a mixed acid thereof, for neutralization.
- In electrolytic surface-roughening treatment carried out in the electrolytic solution containing hydrochloric acid (hereinafter also referred to as hydrochloric acid electrolytic solution), the hydrochloric acid concentration in the hydrochloric acid electrolytic solution is 5-20 g/liter, and preferably 6-15 g/liter. The current density supplied is in the range of 15-200 A/dm2, and preferably 20 - 150 A/dm2. The quantity of electricity is in the range of 400-2000 C/dm2, and preferably 500-1500 C/dm2. Frequency is preferably in the range of 40-150 Hz. The temperature during the electrolytic surface-roughening treatment may be in the range of 10-50° C., and is preferably 15-45° C. It is possible to optionally add, to the hydrochloric acid electrolytic solution, nitrates, chlorides, amines, aldehydes, phosphoric acid, chromic acid, boric acid, acetic acid, oxalic acid or aluminum salts.
- After the aluminum plate has been subjected to electrolytic surface-roughening treatment in the hydrochloric acid electrolytic solution, it is preferably dipped in an acid or an aqueous alkali solution in order to remove aluminum dust, etc., which have been produced in the plate surface. Examples of the acid include sulfuric acid, persulfuric acid, hydrofluoric acid, phosphoric acid, nitric acid and hydrochloric acid, and examples of the alkali include sodium hydroxide and potassium hydroxide. Among those mentioned above, a phosphoric acid or sodium hydroxide aqueous solution is preferably used. The dissolution amount of aluminum in the plate surface is preferably 0.1-2 g/m2. After the plate has been dipped in the aqueous alkali solution, it is preferable for the plate to be dipped in an acid such as phosphoric acid, nitric acid, sulfuric acid and chromic acid, or in a mixed acid thereof, for neutralization.
- The average surface roughness (Ra) of the surface-roughened aluminum plate is preferably 0.3-0.8 μm. The average surface roughness can be adjusted by appropriately selecting surface roughening conditions such as concentration of the electrolytic solution used, current density supplied or electricity supplied.
- The anodization process of the present invention is preferably carried out after the surface-roughening treatment described above.
- The anodization process of the present invention will be explained below employing figures.
-
FIG. 1 (a) shows a side view of one embodiment in the anodization process of the present invention, and of an electrolyte tank used in EXAMPLE.FIG. 1 (b) shows a cross-sectional view ofFIG. 1 (a) at A - A′.FIG. 2 (a) is a plan view showing an example of the shape of an electric insulator, andFIG. 2 (b) shows a cross-sectional view ofFIG. 2 (a) at B - B′.FIG. 3 shows a side view of one example of conventional anodization apparatuses including an electricity supply tank. - In
FIG. 1 (a), long-length aluminum plate 1 is transported inelectrolyte tank 3 filled withelectrolytic solution 2 via a plurality ofrollers 4 to be anodized. - Long-length aluminum plate 1 travels between
anode 5 andcathode 6 inelectrolytic solution 2, andanode 5 andcathode 6 are placed facing to each other. - The current flow section of the present invention means the opening section provided in the area of
electric insulator 8 facing long-length aluminum plate 1. In addition, fixedelectric insulator 7 is placed between long-length aluminum plate 1 andanode 5. -
Electric insulator 8 of the present invention in the form of an endless belt is continuously transported via a plurality ofrollers 4, as shown inFIG. 1 (a).Belt side 10 is closely brought into contact with fixedelectric insulator 7, andconvexed section 11 is also closely brought into contact with long-length aluminum plate 1. Openings produced inelectric insulator 8 are served ascurrent flow section 12. - When voltage is applied between
anode 5 andcathode 6 while transporting long-length aluminum plate 1, current flows, throughcurrent flow section 12, fromanode 5 to long-length aluminum plate 1, and then flows from long-length aluminum plate 1 tocathode 6, whereby an anodization layer is formed on the surface on theside facing cathode 6 of long-length aluminum plate 1. In this case,convexed section 11 ofelectric insulator 8 is closely brought into contact with long-length aluminum plate 1, wherebyelectric insulator travel 8 and long-length aluminum plate 1 travel in uniform speed. In addition,Current flow section 12 of the present invention is required to be located at a position of at most 10% in width length from an outer side of the aluminum plate with respect to the width length of the long-length aluminum plate. - Fixed
electric insulator 7 contacts the wall ofelectrolyte tank 3. That is, the electrolytic solution on the anode side and the electrolytic solution on the cathode side combine with each other only through the current flow section. - The distance between the long-length aluminum plate and the anode is preferably 40-60 mm, in reducing loss of electric power.
- In the present invention, the thickness of the long-length aluminum plate is preferably 0.15-0.5 mm. The current density to be supplied onto the surface of the long-length aluminum plate is preferably 500-10000 A/m2.
- The traveling speed of the long-length aluminum plate is preferably 5-100 m/min, and more preferably 10-80 m/min.
- In the present invention, the shape of the current flow section, i.e., the shape of the opening in the electric insulator, may be a slit in the form of
FIG. 2 (a), and may also be a slit surrounded by straight lines provided in the electric insulator, a hole discontinuously provided in the electric insulator, or an opening such as holes in the network form.FIG. 2 (b) also shows a cross-sectional view of the electric insulator inFIG. 2 (a). In addition, the ratio of the total opening area to the total plan view area ofelectric insulator 8 is designated as an opening section area ratio. - The above fixed electric insulator in the present invention refers to an insulator having a volume resistance of at least 1015 Ω. Examples thereof include a film of acryl resin, polyvinyl chloride, polypropylene, polybutylene, polyethylene, and polystyrene. Polyvinyl chloride film or polypropylene film, each having high strength, is preferably employed.
- It is more effective in the present invention that plural electrolyte tanks are continuously provided.
- Current density flowing through the current flow section is preferably 500-20000 A/m2.
- A titanium mesh or a platinum mesh can be used as material for the anode, and carbon or aluminum can be used as material for the cathode.
- These need not be one body. For example, it is preferred that many anodes having a length of 50-200 mm are provided, and hydrogen gas or such does not accumulate at the cathode portion.
-
FIG. 3 shows a side view of one embodiment of conventional anodization apparatuses. InFIG. 3 , anelectricity supply tank 31 includinganode 5 is provided upstream anelectrolytic tank 32 includingcathode 6. As anodization speed becomes high, much current is necessary where it is necessary to provide two or three power supplies separately and lengthen the cathode. However, length of anodization process is restricted as anodization speed becomes high, since an aluminum plate to be anodized works as a resistance and current may be difficult to flow. - The electrolytic solution employed in the present invention is preferably a sulfuric acid solution or an electrolytic solution containing sulfuric acid mainly (hereinafter also referred to as sulfuric acid electrolytic solution).
- The content of the sulfuric acid electrolytic solution is preferably 5-50% by weight, and more preferably 15-35% by weight. The temperature of the sulfuric acid electrolytic solution is preferably 10-50° C.
- Voltage applied during anodization is preferably at least 18V, and more preferably at least 20V.
- The amount of the anodization layer formed on the aluminum plate is preferably 1.5-4 g/m2, and more preferably 2-3 g/m2.
- The amount of the formed anodization layer can be obtained from the weight difference between the aluminum plates before and after dissolution of the anodization layer. The anodization layer of the aluminum plate is dissolved by being immersed at 90° C. for 5 minutes in for example, an aqueous phosphoric acid chromic acid solution, which is prepared by dissolving 35 ml of 85% by weight of phosphoric acid and 20 g of chromic acid anhydride in 1 liter of water.
- Micro pores are formed in the anodization layer. The micro pore density in the anodization layer is preferably 400-700/μm2, and more preferably 400-600/μm2.
- The aluminum plate, which has been subjected to anodization treatment, is optionally subjected to sealing treatment. For the sealing treatment, it is possible to use known methods using hot water, boiling water, steam, a sodium silicate solution, an aqueous dichromate solution, a nitrite solution, an ammonium acetate solution or polyvinyl phosphonic acid solution.
- The anodization process of the invention can be carried out employing an anodization apparatus comprising the electrolyte tank as described above and a means for supplying electricity to the electrolyte tank.
- In the present invention, the long-length aluminum plate is usable as a support for a planographic printing plate material, and a light sensitive planographic printing plate material can also be prepared by providing a light sensitive layer on the support for the planographic printing plate material of the present invention in which an aluminum plate has been subjected to anodization.
- The light sensitive layer herein is a layer which is capable of forming an image after imagewise exposure. As such a light sensitive layer, a negative or positive working light sensitive layer, which has been used for a light sensitive layer of PS plates, can be employed.
- (Positive Working Light Sensitive Layer)
- As a compound used in the positive working light sensitive layer, there are o-naphthoquinonediazide compounds.
- As the o-naphthoquinonediazide compound, ester of 1,2-diazonaphthoquinone sulfonic acid and pyrogallol-acetone resin is preferred which is disclosed in Japanese Patent Examined Publication No. 43-28403. Other preferred examples thereof include ester of 1,2-diazonaphthoquinone-5-sulfonic acid and phenol-formaldehyde resin as disclosed in U.S. Pat. Nos. 3,046,120 and 3,188,210, and ester of 1,2-diazonaphthoquinone-4-sulfonic acid and phenol-formaldehyde resin as disclosed in Japanese Patent O.P.I. Publication Nos. 2-96163, 2-96165, and 2-96761. As other useful o-naphthoquinonediazide compounds, there are various o-naphthoquinonediazide compounds disclosed in many patent documents, for example, in Japanese Patent O.P.I. Publication Nos. 47-5303, 48-63802, 48-63803, 48-96575, 49-38701, and 48-13854; Japanese Patent Examined Publication Nos. 37-18015, 41-11222, 45-9610, and 49-17481; U.S. Pat. Nos. 2,797,212, 3,454,400, 3,544,323, 3,573,917, 3,674,495, and 3,785,825; British Patent Nos. 1,227,602, 1,251,345, 1,267,005, and 1,329,888; and German Patent No. 854,890.
- The o-quinonediazide compounds may be used alone, but is preferably used in combination with an alkali soluble resin (binder). As such an alkali soluble resin, there are novolak resins, typically, phenol-formaldehyde resin, o-, m- or p-cresol-formaldehyde resin, and phenol/cresol (o-, m- or p-cresol, or m/p- or o/m-mixed cresol)-formaldehyde resin. Other examples of the o-quinonediazide compounds include phenol-modified xylene resin, polyhydroxystyrene, poly(halogenated hydroxystyrene), and acryl resins having a hydroxyl group as disclosed in Japanese Patent O.P.I. Publication No. 51-34711.
- In order to increase stability (so-called developing latitude) under various developing conditions, the positive working light sensitive layer can contain non-ionic surfactants as disclosed in Japanese Patent O.P.I. Publication Nos. 62-251740 and 2-96760 or amphoteric surfactants as disclosed in Japanese Patent O.P.I. Publication Nos. 59-121044 and 4-13149.
- Examples of the non-ionic surfactants include sorbitan tristearate, sorbitan monopalmitate, sorbitan trioleate, stearic acid monoglyceride, polyoxyethylene sorbitan monooleate, and polyoxyethylene nonylphenyl ether. Examples of the amphoteric surfactants include alkyldi(aminoethyl)-glycine, alkylpoly(aminoethyl)glycine hydrochloride, 2-alkyl -N-carboxyethyl-N-hydroxyethylimidazolinium betaine, N -tetradecyl-N,N-betaine type compounds (for example, trade name: AMOGEN K produced by DAIICHI KOGYO CO., LTD.) and alkylimidazoline type compounds (for example, REBON 15 produced by SANYO CHEMICAL CO., LTD.). The content in the light sensitive layer of the non-ionic surfactants or amphoteric surfactants is preferably 0.05-15% by weight, and more preferably 0.1-5% by weight.
- A print-out agent for obtaining a visible image immediately after imagewise exposure or a dye or pigment as an image colorant can be added into the positive working light sensitive layer.
- Representative examples of the print-out agent are combinations of compounds releasing an acid on exposure (photolytically acid-releasing agent) and organic dyes capable of forming a salt. Specific examples of the combination include a combination of o-naphthoquinonediazide-4-sulfonic acid halide and a salt-forming organic dye described in Japanese Patent O.P.I. Publication Nos. 50-36209 and 53-8128, and a combination of a trihalomethyl compound and a salt-forming organic dye described in Japanese Patent O.P.I. Publication Nos. 53-36223, 54-74728, 60-3626, 61-143748, 61-151644 and 63-58440. Examples of the trihalomethyl compound include oxazole-based compounds and triazine-based compounds, and any of these is excellent in stability over time and gives a clear print-out image. As the image coloration agent, other dyes are also used other than the above-mentioned salt-forming organic dyes. Examples of the suitable dye include oil-soluble dyes and basic dyes in addition to the salt-forming organic dyes. Specific examples thereof include Oil Yellow #101, Oil Yellow #103, Oil Pink #312, Oil green BG, Oil Blue BOS, Oil Blue #603, Oil Black BY, Oil Black BS, Oil Black T-505 (all of these are manufactured by Orient Chemical Industries, Ltd.), Victoria Pure Blue, Crystal Violet (CI42555), Methyl Violet (CI42535), Ethyl Violet, Rhodamine B (CI145170B), Malachite Green (CI42000) and Methylene Blue (CI52015). Particularly preferable dyes are those described in Japanese Patent O.P.I. Publication No. 62-293247.
- (Negative Working Light Sensitive Layer)
- As the negative working light sensitive layer, there are a light sensitive layer containing a light sensitive diazo compound, a photopolymerizable light sensitive layer and a photo-crosslinking containing light sensitive layer.
- As the light sensitive diazo compound is suitably used a diazo resin prepared by condensing an aromatic diazonium compound with a active carbonyl group-containing organic condensation agent, particularly aldehydes such as formaldehyde or acetaldehyde or acetals in an acidic medium. Typical examples thereof include a condensation product of p-diazophenylamine with formaldehyde. The synthetic method of these diazo resins is described in U.S. Pat. Nos. 2,679,498, 3,050,502, 3,311,605, and 3,277,074. The light sensitive diazo compound preferably is a co-condensation diazo compound comprising in the molecule an aromatic diazonium salt unit and a substituted aromatic compound unit containing no diazonium group described in Japanese Patent Examined Publication No. 49-48001, and further preferably a co-condensation diazo compound comprising in the molecule an aromatic diazonium salt unit and an aromatic compound unit having an alkali-solubilizing group such as a carboxyl group or a hydroxyl group. The light sensitive layer in the invention can contain the surfactant as denoted above in the positive working light sensitive layer in order to improve quality of the coated layer surface.
- (Matting Agent)
- A matting layer may be provided on the light sensitive layer in order to prevent blurring on exposure and shorten vacuum drawing time when contact exposure under vacuum is carried out.
- As the light sensitive layer of the light sensitive planographic printing plate material of the present invention, a thermosensitive image formation layer can be employed which is used in a processless planographic printing plate material which requires no developing treatment.
- The light sensitive planographic printing plate material comprising the support of the invention is imagewise exposed and optionally subjected to developing treatment to obtain a planographic printing plate.
- Next, the present invention will be explained employing examples, but the present invention is not limited thereto. In the examples, “parts” represents “parts by weight”, unless otherwise specified.
- (Preparation of Supports 1-4)
- Employing a continuous aluminum plate processing apparatus as shown in
FIG. 1 and additionally inFIG. 2 (a utilized apparatus is shown inFIG. 1 ), a 0.24 mm thick aluminum plate(according to JIS 1050) was degreased at 60° C. for 10 seconds in a 5% sodium hydroxide solution, washed with water, immersed at 25° C. for 10 seconds in a 10% nitric acid solution to neutralize, and then washed with water. - The aluminum plate was electrolytically surface-roughened at 30° C. for 10 seconds at a current density of 8 kA/m2 in an aqueous solution containing 11 g/liter of hydrochloric acid, and 1.5 g/liter of dissolved aluminum, immersed in a 1% sodium hydroxide solution at 20° C. for 10 seconds, further immersed in a 10% nitric acid solution at 25° C. for 10 seconds to neutralize, and then washed with water to prepare supports 1-4. A weight of each anodization layer was 2.5 g/m2.
TABLE 1 Electric power Electrolyte Current consumption Support *1 *2 tank (A) *3 (kW) Remarks 1 1000 20 16000 32 512 Inv. 2 1000 40 16000 31 496 Inv. 3 1000 50 16000 30 480 Inv. 4 1000 — 16000 37 592 Comp.
*1: Aluminum plate width (mm)
*2: Opening section area ratio (%)
*3: Electrolytic voltage (V)
Inv.: Present invention
Comp.: Comparative example
- As is clear from Table 1, it is to be understood that the loss of electricity can be reduced employing an anodization process of the present invention, and an anodization layer can be formed on an aluminum plate.
- (Preparation of Positive Working Light Sensitive Planographic Printing Plate Material)
- The following positive light sensitive layer composition was coated on each of above-described supports 1 - 4 so as to give a dry coating amount of 2 g/m2 to prepare a light sensitive planographic printing plate material sample.
- (Positive Working Light Sensitive Layer Composition)
- Esterification product (esterification rate: 20%) of a pyrogallol-acetone resin (weight average molecular weight: 2,500) with naphthoquinone(1,2)
-diazide-(2)-5- sulfonylchloride 5 parts Novolak resin (weight average molecular weight: 20 parts 5,500): condensation product of mixed phenols (phenol/m-cresol/p-cresol, 5/57/38, weight ratio) and formaldehyde Esterification product(esterification rate: 50%) 0.25 parts of naphthoquinone(1,2)-diazide-(2)-5-sulfonylchloride and p-tert-octylphenol-formaldehyde novolak resin (weight average molecular weight: 1,800) 3,4-dimethoxybenzoic acid 1.25 parts 2-trichloromethyl-5-[b-(2-benzofuryl)vinyl]- 0.25 parts 1,3,4-oxadiazole Bictoria Pure Blue BOH (produced by Hodogaya 0.25 parts Kagaku Co., Ltd.) Methyl cellosolve 200 parts - The resulting light sensitive planographic printing plate material sample was imagewise exposed and developed to prepare a planographic printing plate. Employing the planographic printing plate, printing was carried out and printed matter with good image quality was obtained.
- The present invention is possible to provide an anodization process of a long-length aluminum plate, which reduces loss of electricity, to provide an anodization apparatus used in the anodization process, and to provide a support for a printing plate material manufactured according to the anodization process.
Claims (8)
1. A process of anodizing a long-length aluminum plate, employing an anodization apparatus comprising an electrolyte tank charged with an electrolytic solution, and provided in the electrolytic solution, an anode, a cathode and an electric insulator with an opening that forms a current flow section, the electric insulator being provided between the anode and the cathode, the process comprising the steps of:
(a) providing the long-length aluminum plate between the cathode and the electric insulator in the electrolytic solution; and
(b) anodizing the long-length aluminum plate by supplying current between the anode and the long-length aluminum plate through the current flow section, whereby an anodization layer is formed on the aluminum plate surface on the side facing the cathode,
wherein the opening is located at a position of at most 10% in width length from an outer side of the long-length aluminum plate with respect to the width length of the long-length aluminum plate, a part of the long-length aluminum plate is brought into contact with a part of the electric insulator, and the long-length aluminum plate and the electric insulator travel in uniform speed.
2. The process of claim 1 ,
wherein the process comprises further a step of rotating the electric insulator via a plurality of rollers.
3. The process of claim 1 ,
wherein the long-length aluminum plate is a support for a planographic printing plate material.
4. The process of claim 1 ,
wherein a traveling speed of the long-length aluminum plate is 5-100 m/min.
5. The process of claim 1 ,
wherein an amount of the anodization layer is 1.5-4 g/m2.
6. The process of claim 1 , wherein a distance between the long-length aluminum plate and the anode is 40-60 mm.
7. The process of claim 1 ,
wherein a thickness of the long-length aluminum plate is 0.15-0.50 mm.
8. An anodization apparatus comprising an electrolyte tank charged with an electrolytic solution, and provided in the electrolytic solution, an anode, a cathode, an electric insulator with an opening that forms a current flow section, the electric insulator being provided between the anode and the cathode, and a long-length aluminum plate being provided between the cathode and the electric insulator, that is anodized by supplying current between the anode and the long-length aluminum plate through the current flow section, whereby an anodization layer is formed on the aluminum plate surface on the side facing the cathode,
wherein the opening is located at a position of at most 10% in width length from an outer side of the long-length aluminum plate with respect to the width length of the long-length aluminum plate, a part of the long-length aluminum plate is brought into contact with a part of the electric insulator, and the long-length aluminum plate and the electric insulator travel in uniform speed.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JPJP2005-259086 | 2005-09-07 | ||
JP2005259086A JP2007070694A (en) | 2005-09-07 | 2005-09-07 | Anode oxidation treatment method for beltlike aluminum plate, support for lithographic printing plate material, and anode oxidation treatment device |
Publications (1)
Publication Number | Publication Date |
---|---|
US20070051637A1 true US20070051637A1 (en) | 2007-03-08 |
Family
ID=37829056
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/514,268 Abandoned US20070051637A1 (en) | 2005-09-07 | 2006-09-01 | Anodization process of long-length aluminum plate, anodization apparatus and aluminum support for planographic printing plate material |
Country Status (2)
Country | Link |
---|---|
US (1) | US20070051637A1 (en) |
JP (1) | JP2007070694A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104060312A (en) * | 2013-03-21 | 2014-09-24 | 汉达精密电子(昆山)有限公司 | Anodization apparatus and method thereof |
Citations (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2679498A (en) * | 1954-05-25 | Atent office | ||
US2797212A (en) * | 1955-05-09 | 1957-06-25 | Keever Starch Company | Treatment of gluten |
US3046120A (en) * | 1950-10-31 | 1962-07-24 | Azoplate Corp | Light-sensitive layers for photomechanical reproduction |
US3050502A (en) * | 1959-01-29 | 1962-08-21 | Polychrome Corp | Diazo condensation polymers |
US3188210A (en) * | 1959-01-21 | 1965-06-08 | Azoplate Corp | Naphthoquinone (1, 2)-diazide-sulfonic acid derivatives and process of producing printing plates therefrom |
US3277074A (en) * | 1961-01-25 | 1966-10-04 | Azoplate Corp | Method for the preparation of polyfunctional diazonium halides |
US3311605A (en) * | 1961-01-25 | 1967-03-28 | Azoplate Corp | Method for the preparation of polyfunctional diazonium halides |
US3454400A (en) * | 1964-08-05 | 1969-07-08 | Algraphy Ltd | Light-sensitive naphthoquinone diazide ester compounds and printing plates made therefrom |
US3544323A (en) * | 1966-12-12 | 1970-12-01 | Sumner Williams Inc | Diazo compound for lithographic plates |
US3573917A (en) * | 1968-07-12 | 1971-04-06 | Takashi Okamoto | Light-sensitive printing plate composition |
US3674495A (en) * | 1969-05-30 | 1972-07-04 | Okamoto Chem Ind Co Ltd | Sensitizing layer |
US3785825A (en) * | 1971-07-19 | 1974-01-15 | Polychrome Corp | Light-sensitive quinone diazide compounds,compositions,and presensitized lithographic plate |
US4390407A (en) * | 1980-09-10 | 1983-06-28 | Fuji Photo Film Co., Ltd. | Electrolytic processing device for belt-shaped metal plates |
US6344131B1 (en) * | 1994-08-30 | 2002-02-05 | Fuji Photo Film Co., Ltd. | Method of producing aluminum support for planographic printing plate |
-
2005
- 2005-09-07 JP JP2005259086A patent/JP2007070694A/en not_active Withdrawn
-
2006
- 2006-09-01 US US11/514,268 patent/US20070051637A1/en not_active Abandoned
Patent Citations (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2679498A (en) * | 1954-05-25 | Atent office | ||
US3046120A (en) * | 1950-10-31 | 1962-07-24 | Azoplate Corp | Light-sensitive layers for photomechanical reproduction |
US2797212A (en) * | 1955-05-09 | 1957-06-25 | Keever Starch Company | Treatment of gluten |
US3188210A (en) * | 1959-01-21 | 1965-06-08 | Azoplate Corp | Naphthoquinone (1, 2)-diazide-sulfonic acid derivatives and process of producing printing plates therefrom |
US3050502A (en) * | 1959-01-29 | 1962-08-21 | Polychrome Corp | Diazo condensation polymers |
US3311605A (en) * | 1961-01-25 | 1967-03-28 | Azoplate Corp | Method for the preparation of polyfunctional diazonium halides |
US3277074A (en) * | 1961-01-25 | 1966-10-04 | Azoplate Corp | Method for the preparation of polyfunctional diazonium halides |
US3454400A (en) * | 1964-08-05 | 1969-07-08 | Algraphy Ltd | Light-sensitive naphthoquinone diazide ester compounds and printing plates made therefrom |
US3544323A (en) * | 1966-12-12 | 1970-12-01 | Sumner Williams Inc | Diazo compound for lithographic plates |
US3573917A (en) * | 1968-07-12 | 1971-04-06 | Takashi Okamoto | Light-sensitive printing plate composition |
US3674495A (en) * | 1969-05-30 | 1972-07-04 | Okamoto Chem Ind Co Ltd | Sensitizing layer |
US3785825A (en) * | 1971-07-19 | 1974-01-15 | Polychrome Corp | Light-sensitive quinone diazide compounds,compositions,and presensitized lithographic plate |
US4390407A (en) * | 1980-09-10 | 1983-06-28 | Fuji Photo Film Co., Ltd. | Electrolytic processing device for belt-shaped metal plates |
US6344131B1 (en) * | 1994-08-30 | 2002-02-05 | Fuji Photo Film Co., Ltd. | Method of producing aluminum support for planographic printing plate |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104060312A (en) * | 2013-03-21 | 2014-09-24 | 汉达精密电子(昆山)有限公司 | Anodization apparatus and method thereof |
Also Published As
Publication number | Publication date |
---|---|
JP2007070694A (en) | 2007-03-22 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0595179A1 (en) | Method for preparing an aluminum substrate for lithographic printing plate | |
US20060201359A1 (en) | Anodization process of long-length aluminum plate, anodization apparatus and aluminum support for planographic printing plate material | |
JP2005254638A (en) | Method of manufacturing support for lithographic printing plate | |
US20060223005A1 (en) | Lithographic printing plate support and presensitized plate | |
US20070051637A1 (en) | Anodization process of long-length aluminum plate, anodization apparatus and aluminum support for planographic printing plate material | |
EP1442894A1 (en) | Support for lithographic printing plate and presensitized plate and method of treating presensitized plate | |
JP2001213066A (en) | Manufacturing method for lithographic printing plate support, lithographic printing plate support, and lithographic printing plate | |
US20060057500A1 (en) | Method of manufacturing lithographic printing plate support | |
US6670099B2 (en) | Support for lithographic printing plate and method of manufacturing the same | |
EP1712368B1 (en) | Method of manufacturing a support for a lithographic printing plate | |
JPH11208138A (en) | Manufacture of support for lithographic printing plate, support for lithographic printing plate, and photosensitive lithographic printing plate | |
JP4201469B2 (en) | Method for producing support for lithographic printing plate | |
JP3791722B2 (en) | Lithographic printing plate support and method for producing a lithographic printing plate support | |
JP2006076104A (en) | Method for manufacturing support for lithographic printing plate | |
JP3613496B2 (en) | Method for producing support for lithographic printing plate | |
JP2006240116A (en) | Support for lithographic printing plate and its manufacturing method | |
JP3780668B2 (en) | Processing method for positive photosensitive lithographic printing plate | |
JP3613489B2 (en) | Method for producing lithographic printing plate support | |
JPH09234969A (en) | Manufacture of lithographic printing plate support | |
JP3585069B2 (en) | Method for producing lithographic printing plate support | |
JP2002103841A (en) | Manufacturing method for aluminum substrate for lithographic printing plate, aluminum substrate for lithographic printing plate and original film of lithographic printing plate | |
JP2001335998A (en) | Aluminum supporting body and roughening method therefor | |
JP2000289365A (en) | Device for manufacturing support for planographic printing plate | |
JP2000185478A (en) | Manufacture of lithographic printing plate | |
JPH04314054A (en) | Production of planographic printing plate |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: KONICA MINOLTA MEDICAL & GRAPHIC, INC., JAPAN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:TAKADA, TERUO;REEL/FRAME:018262/0174 Effective date: 20060822 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |