JPS6345459B2 - - Google Patents
Info
- Publication number
- JPS6345459B2 JPS6345459B2 JP11221685A JP11221685A JPS6345459B2 JP S6345459 B2 JPS6345459 B2 JP S6345459B2 JP 11221685 A JP11221685 A JP 11221685A JP 11221685 A JP11221685 A JP 11221685A JP S6345459 B2 JPS6345459 B2 JP S6345459B2
- Authority
- JP
- Japan
- Prior art keywords
- plate
- plating
- thickness
- treatment
- temperature
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 238000007639 printing Methods 0.000 claims description 29
- 238000007747 plating Methods 0.000 claims description 28
- 239000000243 solution Substances 0.000 claims description 27
- 229910052751 metal Inorganic materials 0.000 claims description 26
- 239000002184 metal Substances 0.000 claims description 26
- 229910000831 Steel Inorganic materials 0.000 claims description 25
- 239000010959 steel Substances 0.000 claims description 25
- 239000007921 spray Substances 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 15
- 230000003746 surface roughness Effects 0.000 claims description 15
- VTLYFUHAOXGGBS-UHFFFAOYSA-N Fe3+ Chemical compound [Fe+3] VTLYFUHAOXGGBS-UHFFFAOYSA-N 0.000 claims description 14
- 229910001447 ferric ion Inorganic materials 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 14
- 238000007788 roughening Methods 0.000 claims description 10
- 239000003929 acidic solution Substances 0.000 claims description 7
- 238000005507 spraying Methods 0.000 claims description 6
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 claims description 5
- 210000003995 blood forming stem cell Anatomy 0.000 claims description 5
- 229910001448 ferrous ion Inorganic materials 0.000 claims description 5
- 238000011282 treatment Methods 0.000 description 28
- 238000005530 etching Methods 0.000 description 18
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 16
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 13
- 230000000052 comparative effect Effects 0.000 description 10
- 239000007788 liquid Substances 0.000 description 10
- 239000000126 substance Substances 0.000 description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 description 6
- 229910021578 Iron(III) chloride Inorganic materials 0.000 description 5
- 230000007797 corrosion Effects 0.000 description 5
- 238000005260 corrosion Methods 0.000 description 5
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 description 5
- 150000002739 metals Chemical class 0.000 description 5
- 239000011701 zinc Substances 0.000 description 5
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 4
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 4
- 230000006866 deterioration Effects 0.000 description 4
- 238000011156 evaluation Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- 239000003504 photosensitizing agent Substances 0.000 description 4
- 238000004381 surface treatment Methods 0.000 description 4
- 238000005406 washing Methods 0.000 description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 3
- 238000010306 acid treatment Methods 0.000 description 3
- 238000007664 blowing Methods 0.000 description 3
- ZCDOYSPFYFSLEW-UHFFFAOYSA-N chromate(2-) Chemical compound [O-][Cr]([O-])(=O)=O ZCDOYSPFYFSLEW-UHFFFAOYSA-N 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 238000005868 electrolysis reaction Methods 0.000 description 3
- 238000007654 immersion Methods 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- 229910021586 Nickel(II) chloride Inorganic materials 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 229910052804 chromium Inorganic materials 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000007865 diluting Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000011888 foil Substances 0.000 description 2
- LNTHITQWFMADLM-UHFFFAOYSA-N gallic acid Chemical compound OC(=O)C1=CC(O)=C(O)C(O)=C1 LNTHITQWFMADLM-UHFFFAOYSA-N 0.000 description 2
- 229910052736 halogen Inorganic materials 0.000 description 2
- 150000002367 halogens Chemical class 0.000 description 2
- LNOPIUAQISRISI-UHFFFAOYSA-N n'-hydroxy-2-propan-2-ylsulfonylethanimidamide Chemical compound CC(C)S(=O)(=O)CC(N)=NO LNOPIUAQISRISI-UHFFFAOYSA-N 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- QMMRZOWCJAIUJA-UHFFFAOYSA-L nickel dichloride Chemical compound Cl[Ni]Cl QMMRZOWCJAIUJA-UHFFFAOYSA-L 0.000 description 2
- 229920000620 organic polymer Polymers 0.000 description 2
- 239000007800 oxidant agent Substances 0.000 description 2
- KMUONIBRACKNSN-UHFFFAOYSA-N potassium dichromate Chemical compound [K+].[K+].[O-][Cr](=O)(=O)O[Cr]([O-])(=O)=O KMUONIBRACKNSN-UHFFFAOYSA-N 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- PUZPDOWCWNUUKD-UHFFFAOYSA-M sodium fluoride Chemical compound [F-].[Na+] PUZPDOWCWNUUKD-UHFFFAOYSA-M 0.000 description 2
- TXUICONDJPYNPY-UHFFFAOYSA-N (1,10,13-trimethyl-3-oxo-4,5,6,7,8,9,11,12,14,15,16,17-dodecahydrocyclopenta[a]phenanthren-17-yl) heptanoate Chemical compound C1CC2CC(=O)C=C(C)C2(C)C2C1C1CCC(OC(=O)CCCCCC)C1(C)CC2 TXUICONDJPYNPY-UHFFFAOYSA-N 0.000 description 1
- WHOZNOZYMBRCBL-OUKQBFOZSA-N (2E)-2-Tetradecenal Chemical compound CCCCCCCCCCC\C=C\C=O WHOZNOZYMBRCBL-OUKQBFOZSA-N 0.000 description 1
- 229910000967 As alloy Inorganic materials 0.000 description 1
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 1
- KZBUYRJDOAKODT-UHFFFAOYSA-N Chlorine Chemical compound ClCl KZBUYRJDOAKODT-UHFFFAOYSA-N 0.000 description 1
- 208000008818 Chronic Mucocutaneous Candidiasis Diseases 0.000 description 1
- 229920000084 Gum arabic Polymers 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 241000978776 Senegalia senegal Species 0.000 description 1
- 229910001128 Sn alloy Inorganic materials 0.000 description 1
- 229920002125 Sokalan® Polymers 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 229910021626 Tin(II) chloride Inorganic materials 0.000 description 1
- 235000010724 Wisteria floribunda Nutrition 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 239000000205 acacia gum Substances 0.000 description 1
- 235000010489 acacia gum Nutrition 0.000 description 1
- DPXJVFZANSGRMM-UHFFFAOYSA-N acetic acid;2,3,4,5,6-pentahydroxyhexanal;sodium Chemical compound [Na].CC(O)=O.OCC(O)C(O)C(O)C(O)C=O DPXJVFZANSGRMM-UHFFFAOYSA-N 0.000 description 1
- 150000004645 aluminates Chemical class 0.000 description 1
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 description 1
- 229910052921 ammonium sulfate Inorganic materials 0.000 description 1
- 235000011130 ammonium sulphate Nutrition 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 1
- 239000004327 boric acid Substances 0.000 description 1
- 150000001642 boronic acid derivatives Chemical class 0.000 description 1
- 239000001768 carboxy methyl cellulose Substances 0.000 description 1
- 235000010948 carboxy methyl cellulose Nutrition 0.000 description 1
- 229920006184 cellulose methylcellulose Polymers 0.000 description 1
- 150000001805 chlorine compounds Chemical class 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007423 decrease Effects 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
- 238000007598 dipping method Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000002848 electrochemical method Methods 0.000 description 1
- 238000000866 electrolytic etching Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229960002089 ferrous chloride Drugs 0.000 description 1
- 229940074391 gallic acid Drugs 0.000 description 1
- 235000004515 gallic acid Nutrition 0.000 description 1
- 150000002484 inorganic compounds Chemical class 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- NMCUIPGRVMDVDB-UHFFFAOYSA-L iron dichloride Chemical compound Cl[Fe]Cl NMCUIPGRVMDVDB-UHFFFAOYSA-L 0.000 description 1
- UETZVSHORCDDTH-UHFFFAOYSA-N iron(2+);hexacyanide Chemical compound [Fe+2].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-] UETZVSHORCDDTH-UHFFFAOYSA-N 0.000 description 1
- RUTXIHLAWFEWGM-UHFFFAOYSA-H iron(3+) sulfate Chemical compound [Fe+3].[Fe+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O RUTXIHLAWFEWGM-UHFFFAOYSA-H 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 229910000360 iron(III) sulfate Inorganic materials 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000010297 mechanical methods and process Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 229910001507 metal halide Inorganic materials 0.000 description 1
- 150000005309 metal halides Chemical class 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 150000007522 mineralic acids Chemical class 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- LGQLOGILCSXPEA-UHFFFAOYSA-L nickel sulfate Chemical compound [Ni+2].[O-]S([O-])(=O)=O LGQLOGILCSXPEA-UHFFFAOYSA-L 0.000 description 1
- 229910000363 nickel(II) sulfate Inorganic materials 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 238000007645 offset printing Methods 0.000 description 1
- -1 perborates Chemical class 0.000 description 1
- 229940044654 phenolsulfonic acid Drugs 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- IYDGMDWEHDFVQI-UHFFFAOYSA-N phosphoric acid;trioxotungsten Chemical compound O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.OP(O)(O)=O IYDGMDWEHDFVQI-UHFFFAOYSA-N 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 239000004584 polyacrylic acid Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 150000004760 silicates Chemical class 0.000 description 1
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 235000019812 sodium carboxymethyl cellulose Nutrition 0.000 description 1
- 229920001027 sodium carboxymethylcellulose Polymers 0.000 description 1
- 235000013024 sodium fluoride Nutrition 0.000 description 1
- 239000011775 sodium fluoride Substances 0.000 description 1
- 239000001119 stannous chloride Substances 0.000 description 1
- 235000011150 stannous chloride Nutrition 0.000 description 1
- RCIVOBGSMSSVTR-UHFFFAOYSA-L stannous sulfate Chemical compound [SnH2+2].[O-]S([O-])(=O)=O RCIVOBGSMSSVTR-UHFFFAOYSA-L 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- 239000011135 tin Substances 0.000 description 1
- 229910000375 tin(II) sulfate Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 150000003609 titanium compounds Chemical class 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- NWONKYPBYAMBJT-UHFFFAOYSA-L zinc sulfate Chemical compound [Zn+2].[O-]S([O-])(=O)=O NWONKYPBYAMBJT-UHFFFAOYSA-L 0.000 description 1
- 229910000368 zinc sulfate Inorganic materials 0.000 description 1
- 229960001763 zinc sulfate Drugs 0.000 description 1
Landscapes
- ing And Chemical Polishing (AREA)
Description
〔産業上の利用分野〕
本発明は、親水性、保水性、親インキ性物質の
耐密着性、網点再現性及び耐刷性にすぐれた版材
用金属板の製造法に関するものであり、特開昭57
−143490号を改良したものである。
〔従来の技術とその問題点〕
現在、金属材料を用いた平版印刷版用金属板に
は、機械的または電気化学的な方法で容易に平板
に適した表面形状を得ることが可能なAl板が一
般に使用されている。
しかし、Alをベースとした平版印刷版用金属
板は高価であることから、Al版の厚みを薄くす
る方法がとられているが、Al版を薄くすると機
械的特性が劣り、一般には0.1〜0.3mm必要であ
り、たとえば新聞印刷用には厚み0.3mmのAl板が
使用され、更に、陽極処理を施して耐刷力を向上
させている。従つて厚み0.3mm以下のAl板は軽印
刷用しか適用できない。また、Al板を機械的あ
るいは電気化学的に研摩し、次いで親水処理をす
ることは処理工程が著しく複雑であり、また処理
時間が長く、これらに関する特許も数多くみられ
るが、いまだ単純化されておらず、Al板をベー
スとした平版印刷版が高価な原因にもなつてい
る。
〔発明が解決しようとする問題点〕
このように、安価でかつ特性(特に網点再現
性)のすぐれた平版印刷版用金属板が得られてい
ない。
〔問題点を解決するための手段〕
そこで、機械的特性についてはAl板よりもす
ぐれ、しかも安価な鋼板に着目して、検討した結
果、鋼板ベースの版材は安価でかつ厚み0.3mmの
Al板並の機械的強度を得るためには0.1mmで良い
ことが判明した。従つて鋼板表面が平版印刷用金
属板としてAl版と同等以上になるように検討し、
全く新しい方法で平版印刷用Al版に比べてすぐ
れている方法を見出したのである。
本発明は、新水性にすぐれ、かつこの親水性が
劣化することなく長期にわたつて維持され、しか
も保水性、親インキ性物質との密着性、網点再現
性及び耐刷性にすぐれた版材用金属板を得る方法
を提供するものである。
その要旨は、厚みが30〜250μmの鋼板に、表
面平均粗さが0.1〜2μm、HSCが40〜110個/2.5
mmになるように、第2鉄イオンを含んだ酸性溶液
をスプレーによる方法で吹きつけるか、第2鉄イ
オンを含んだ酸性溶液をスプレーによる方法で吹
きつけた後、第1鉄イオンを主成分とした溶液中
でFeめつきによる粗面化処理を施し、更に、耐
食性を付与するめつきを施し、次いで公知の新水
処理を施した安価で、親水性、保水性、親インキ
性物質との密着性、網点再現性及び耐刷性にすぐ
れた版材用金属板の製造法である。
以下本発明を詳細に説明する。
本発明の版材用金属板とは圧延法により製造さ
れた鋼板の厚み30〜250μmの板である。鋼板の
厚みが250μmを超えると、版材加工上扱い難く、
また材料費の面からも不経済である。また、30μ
m未満では、現在その製造コストが高くなり不経
済であり、更に次の工程のスプレー式エツチング
により表面を粗くするだけでなく鋼板を溶解させ
るため、機械的強度が著しく劣る。
つぎに、良好な親水性、保水性及び網点再現性
を有する表面平均粗さRa(JIS B 0601)0.1〜
2μm、HSC40〜110個/2.5mm及び表面形状にする
ために、第2鉄イオンを含んだ酸性溶液をスプレ
ー法により前述鋼板に吹きつけるか、第2鉄イオ
ンを含んだ酸性溶液をスプレーによる方法で吹き
つけた後、第1鉄イオンを主成分とした溶液中で
Feめつきを施す。表面粗さRaが0.1μm以下であ
れば表面が平滑に近くなるので、親水性、保水性
が充分でなく、2μm以上になると粗すぎて印刷
時に画像のにじみが多くなり、良好な印刷物は得
られない。HSCが40個/2.5mm以下であれば、感
光剤との密着性及び網点再現性が著しく劣り、
110個/2.5mm以上であれば、現像時感光剤の抜け
性が悪くなる。スプレー法によるエツチングは、
浸漬によるエツチングと比べて短時間に表面を粗
くするだけでなく、単一面積当たりの凹凸数が多
くなり、また、表面形状も変化し、親水性、保水
性、感光剤との密着性及び網点再現性が改善され
る。特に、ポジタイプPS版における網点は、紫
外線による露光工程で、ポジ原稿のものより小さ
くする必要があり、網点を小さくするためには、
表面を白色化あるいは表面の単一長さ当たりの山
数を増すと良い。また、スプレーすることにより
表面を粗くするだけでなく、エツチングで発生し
たスマツヂを除去するため、浸漬によるエツチン
グのようなデスマツト処理が不要となる。また、
電解エツチングと比べて電気代が不要となり有利
である。
スプレー法によるエツチングは版の片面でも裏
表両面であつても良い。処理液は第2鉄イオンを
主成分としたハロゲン浴、硫酸浴、硝酸浴、塩化
浴と硫酸浴の混合浴、スルフアミン酸浴からなる
酸性溶液を用いる。第2鉄イオンを含むことによ
り、単なる無機酸と比べて第2鉄イオンが酸化剤
であるので、短時間で表面を粗くする利点があ
る。また、第2鉄イオンを含んだ溶液を用いてい
るため、エツチングによりFeのみが溶出するの
で浴の管理が容易である。第2鉄イオンの濃度は
10g/〜溶解度以下の範囲で実施可能であり、
10g/以下であれば第2鉄イオンの消費による
液劣化が著しく、連続処理が困難となるだけでな
く、表面形状が不均一となる。また、溶解度以上
であれば、不溶な第2鉄化合物が発生し、スプレ
ーのノズルがつまりやすくトラブルの原因とな
る。このため、第2鉄イオン濃度の上限は、エツ
チング液のPH、温度、塩の種類によつて規制され
る。PHは0〜5が好ましく、特に0〜3.5の範囲
が好ましい。5以上になると、第2鉄イオンの溶
解度低下による不溶な第2鉄化合物の発生がスプ
レーノズルをつまらせ、また表面形状が不均一に
なる。PHの調整はエツチング液が塩化物であれ
ば、塩酸を、硫酸塩の場合は硫酸というふうに同
じものを用いれば良い。温度は室温から沸点以下
の温度範囲が好ましく、特に室温から80℃以下が
好ましい。浴温が高いと、液濃度を上げることが
可能となるが、表面を粗くするよりも鉄の溶解速
度が著しく速くなり、液劣化を促進し、表面形状
が不均一になりやすい。スプレー液の状態は液状
よりも霧状になるノズルの型式が好ましい。霧状
では、表面形状において単一面積当たりの凹凸の
数が増加し、更に印刷しやすくする1μm以下の
径をもつピツトが発生し、保水性、網点再現性が
特に改善される。第1鉄イオン増加による液劣化
防止は過酸化水素水等の酸化剤添加または電解酸
化すれば良く、また、塩化物の場合、塩素ガスを
吹き込むことにより容易に液劣化を防止すること
が可能である。更に、エツチング後Feめつきす
る場合は、第1鉄イオンに還元された溶液をFe
めつきへ補給することが可能である。その場合、
Feめつき液はエツチング液と同じ塩を用いる。
スプレー式エツチングのFeめつき厚みは0.1〜5μ
mの範囲が良く、主にエツチング後の表面平均粗
さRaを調整するために用いる。また、めつき液
は公知のもので良く、例えば、ハロゲン浴、硫酸
浴、塩化浴と硫酸浴の混合浴、スルフアミン酸浴
が含まれ、エツチング液と同じ塩を含むものを用
いる。
次に鋼板を粗面化処理しただけでは、耐食性が
劣り、赤錆が発生し、好ましくないので表面処理
を行うのが好ましい。表面処理としては鋼板に対
して防錆効果を有するCr、Ni、Sn、Cu、Znなど
の金属の単層めつき、これらの金属の2種以上を
組合せた複層めつき、及びこれらの金属の1種も
しくは、2種以上を含む合金めつきなどのめつき
処理法がある。
このような表面処理は耐食性の改善だけでな
く、画像部を形成する親インキ性物質との密着性
にも効果的に作用する。特に、めつきの場合、電
着核の適当な成長により、表面の粗面化にも効果
的である。このため、平滑なめつき条件よりも凹
凸になるようなめつき条件で表面処理を行う方が
良い。このめつき厚みは、鋼板の耐食性が保証さ
れるところを下限とするように設定するのが経済
的である。Znのように安価な金属ならともかく
CrかNiのように高価な金属はいたずらに厚くす
る必要はない。また、めつき後、耐食性を付与す
る公知の化成処理を施すことにより、めつき厚み
を更に下げることが可能となるだけでなく、感光
剤との密着性が改善される。公知の化成処理は、
例えば、クロム酸塩、重クロム酸塩、リン酸塩、
モリブデン酸塩、ケイ酸塩、ホウ酸塩、過ホウ酸
塩、アルミン酸塩などを含む溶液での浸漬あるい
は電解による処理である。
前述の表面平均粗さをもつ表面処理をした金属
のうちは親水性を示すものがあり、そのまま版材
として使用できるが、表面処理された金属板の多
くは、親水性が不充分であり、しかも親水性の経
時劣化が著しいのであらためて親水処理を行う。
親水処理は一般に使用されている公知のものが良
く、例えば、シリケート処理、有機チタニウム化
合物処理、有機リン酸処理、フエロシアンフエリ
シアン化物処理、没食子酸処理、リンタングステ
ン酸処理、ポリアクリル酸かCMCなどの有機高
分子被覆処理か無機化合物のゾルによる処理が含
まれ、限定されるものではない。
〔作用〕
前述の工程で処理した版材用金属板は、親水
性、保水性、親インキ性物質との密着性、網点再
現性及び耐刷性にすぐれている。
〔実施例〕
以下実施例で具体的に説明する。
実施例 1
厚み150μmの鋼板に、温度30℃、濃度380g/
の塩化第2鉄溶液(PH0.8、5倍希釈して測定)
をスプレーノズル(八州興業(株)社製TYPE−S
型)に通して40秒吹きつけることにより、表面平
均粗さRaを0.9μmに粗面化した。これに硫酸亜
鉛250g/、硫酸アンモニウム30g/を含ん
だ溶液を用いて、温度45℃、電流密度20A/dm2
の条件でZnを0.7μmめつきし、無水クロム酸30
g/、硫酸1g/含んだ溶液(温度40℃)中
に6秒浸漬した。次いで、アルミナゾル(品名:
AS−200、日産化学製)20g/とシリカゾル
(品名:スノーテツクス−0、日産化学製)1
g/含む溶液(温度30℃)中で鋼板を陰極とし
て0.2A/dm2の電流密度で20秒電解し、水洗後
乾燥した。更に、リン酸2g/を含んだ溶液
(温度30℃)中に、10秒浸漬し、水洗後乾燥して
版材用金属板を得た。
実施例 2
厚み30μmの鋼箔に、温度70℃の50g/の塩
化第2鉄溶液(PH2.1、5倍希釈して測定)をス
プレーノズル(いけうち(株)社製VE型)に通して
10秒吹きつけることにより、表面平均粗さRaを
0.2μmに粗面化した。これにワツト浴(硫酸ニツ
ケル240g/、塩化ニツケル45g/、ホウ酸
30g/)を用い、温度50℃、電流密度5A/d
m2の条件でNiを0.2μmめつきした。次いでサー
ジエント浴(無水クロム酸250g/、硫酸2.5
g/)を用いて、温度45℃、電流密度20A/d
m2の条件でCrを0.02μmめつきを行い、Tiゾル60
g/、無水クロム酸1g/を含む溶液中で鋼
箔を陰極として、温度30℃、電流密度0.2A/d
m2の条件で30秒電解を行い、水洗後乾燥して、版
材用金属板を得た。
実施例 3
厚み250μmの鋼板に、温度45℃、濃度200g/
の硫酸第2鉄溶液(PH2.7)をスプレーノズル
(いけうち(株)社製VP型)に通して40秒吹きつける
ことにより、表面平均粗さRaを2μmに粗面化し
た。これにフエロスタン浴(硫酸第1錫80g/
、フエノールサルフオニツク酸80g/、ノイ
ゲンEN20g/)を用いて、温度45℃、電流密
度10A/dm2の条件でSnを0.07μmめつきを行い、
重クロム酸カリウム30g/を含んだ溶液中で、
鋼板を陰極として、温度40℃、電流密度5A/d
m2で5秒電解した。水洗後、カルボキシルメチル
セルローズナトリウム0.9g/を含んだ溶液の
(温度40℃)中に30秒浸漬し、水洗後乾燥して版
材用金属板を得た。
実施例 4
厚み100μmの鋼板に、温度20℃、450g/の
塩化第2鉄溶液(PH0.5、5倍希釈して測定)を
スプレーノズル(八州興業(株)社製TYPE−AS型)
に通して、30秒間吹きつけ、次いで、塩化第1鉄
800g/含んだ浴で温度90℃、電流密度20A/
dm2の条件でFeを2μmめつきすることにより、
表面平均粗さRaを0.5μmに粗面化した。これに、
サージエント浴(無水クロム酸250g/、硫酸
2.5g/)を用いて、温度50℃、電流密度
20A/dm2の条件でCrを0.07μmめつきを行い、
アルミナゾル(品名:AS−200、日産化学製)80
g/含んだ溶液中に、温度40℃、処理時間30秒
の条件で浸漬し、水洗後乾燥して版材用金属板を
得た。
実施例 5
厚み200μmの鋼板に、温度40℃、200g/の
塩化第2鉄溶液(PH1.1、5倍希釈して測定)を
スプレーノズル(八州興業(株)社製TYPE−EM
型)に通して吹きつけることにより、表面平均粗
さRaを15μmに粗面化した。これに、塩化第1錫
250g/、塩化ニツケル50g/、フツ化ナト
リウム20g/、塩酸10g/を含んだ浴を用い
て、温度50℃、電流密度2.5A/dm2の条件でNi
−Sn合金を1μmめつきし、これに公知の親水処
理(アラビアゴムを0.5μmになるように塗布し乾
燥した)を施し、版材用金属板を得た。
比較例 1
厚み200μm、表面平均粗さRa0.5μmを有する
鋼板に、粗面化処理を施さず、実施例1と同様な
Znめつき、クロメート処理及び親水処理を施し
た。
比較例 2
厚み100μmの鋼板に、実施例4と同じFeめつ
き液を用いて、温度90℃、電流密度20A/dm2の
条件でFeめつきを5μm施し、表面平均粗さRaを
0.5μmにし、実施例4と同じCrめつきと親水処理
を施した。
比較例 3
実施例1と同じ鋼板を用いて、実施例1と同じ
塩化第2鉄溶液を用いて、40秒浸漬し、表面平均
粗さRaを0.5μmに粗面化した。更に、実施例1
と同様なZnめつき、クロメート処理及び親水処
理を施した。
比較例 4
市販のAlベース製版材である。
比較例1は粗面化処理を施さない例、比較例2
は、粗面化処理としてFeめつきを施した例、比
較例3は粗面化処理として浸漬によるエツチング
を施した例について示す。
このようにして得られた版材用金属板を用いて
次のような種々の試験を行つた。
<表面粗度>
表面粗度は触針式粗度計(名称:SURF−1A、
東京精密製)を用いて、測定長さ2.5mm当たりの
山数(High Spot Count、断面曲線から測定長
さ2.5mmを抜き取り、その平均線より上の位置に
あるかどうかで山と谷を区別した時の山数)を測
定した。
<親水性>
版材用金属板の製造直後、ポジタイプ感光液
(品名:クイツクワイプオンポジタイプ、上野化
学製)を塗布した。乾燥後の感光液塗布重量は
2.0g/m2であつた。
このようにして得られた平版印刷版材料上にポ
ジ原稿フイルムを密着して2kwメタルハライドラ
ンプ(岩崎電気(株)社製ニユーアイドルフイン
2000)を光源として1mの距離から70秒間露光を
行い、現像液(富士写真フイルム(株)社製DP−3)
に浸漬して画像を形成した。現像条件は25℃、45
秒間である。
親水性は、このようにして得られた版上の親水
部に水を滴下し、接触角を測定した。接触角が
20゜以下であれば〇印、20〜40゜であれば△印、40゜
以上を×印とした。
<網点再現性>
網点再現性は、親水性評価で作成した版の網点
(ポジ原稿48.9%網点、150線)を50倍に拡大し
て、網点面積を測定した。なお、評価は、ポジ原
稿との差が5%以上であれば〇印、3〜5%であ
れば△印、3%以下を×印とした。
<耐刷性>
耐刷性は、親水性評価で作成した版をオフセツ
ト印刷し、5万枚までの印刷で評価した。
〔発明の効果〕
評価結果を第1表に示す。
[Industrial Application Field] The present invention relates to a method for manufacturing a metal plate for printing plates that has excellent hydrophilicity, water retention, adhesion resistance of ink-philic substances, halftone dot reproducibility, and printing durability. Unexamined Japanese Patent Publication 1987
-This is an improvement on No. 143490. [Conventional technology and its problems] Currently, metal plates for lithographic printing plates using metal materials include Al plates, which can easily obtain a surface shape suitable for flat plates by mechanical or electrochemical methods. is commonly used. However, since Al-based metal plates for lithographic printing plates are expensive, methods have been taken to reduce the thickness of the Al plate, but thinning the Al plate results in inferior mechanical properties, and generally 0.1~ For example, a 0.3 mm thick Al plate is used for newspaper printing, and is further anodized to improve printing durability. Therefore, Al plates with a thickness of 0.3 mm or less can only be used for light printing. In addition, mechanically or electrochemically polishing an Al plate and then subjecting it to hydrophilic treatment is an extremely complicated treatment process and takes a long time.Although there are many patents related to this, it has not yet been simplified. This is also the reason why lithographic printing plates based on Al plates are expensive. [Problems to be Solved by the Invention] As described above, a metal plate for lithographic printing plates that is inexpensive and has excellent characteristics (particularly halftone reproducibility) has not been obtained. [Means to solve the problem] Therefore, we focused on steel plate, which has better mechanical properties than Al plate and is also cheaper.As a result of our investigation, we found that a plate material based on steel plate is inexpensive and has a thickness of 0.3 mm.
It was found that 0.1 mm is sufficient to obtain mechanical strength equivalent to that of an Al plate. Therefore, we considered how to make the steel plate surface equal to or higher than that of Al plate as a metal plate for lithographic printing.
They discovered a completely new method that is superior to Al plates for lithographic printing. The present invention provides a printing plate that has excellent water resistance, maintains this hydrophilicity over a long period of time without deterioration, and has excellent water retention, adhesion to ink-philic substances, halftone dot reproducibility, and printing durability. The present invention provides a method for obtaining a metal plate for use as a material. The gist is that a steel plate with a thickness of 30 to 250 μm, an average surface roughness of 0.1 to 2 μm, and 40 to 110 HSCs/2.5
Either spray with an acidic solution containing ferric ions, or spray with an acidic solution containing ferric ions so that ferrous ions are the main component. The surface was roughened by Fe plating in a solution of 300 ml, and then plated to give corrosion resistance, and then subjected to a well-known new water treatment. This is a method for producing metal plates for printing plates with excellent adhesion, halftone dot reproducibility, and printing durability. The present invention will be explained in detail below. The plate metal plate of the present invention is a steel plate manufactured by a rolling method and has a thickness of 30 to 250 μm. If the thickness of the steel plate exceeds 250 μm, it will be difficult to process the plate material.
It is also uneconomical in terms of material costs. Also, 30μ
If the thickness is less than m, the manufacturing cost is high and uneconomical, and the spray etching in the next step not only roughens the surface but also melts the steel plate, resulting in significantly poor mechanical strength. Next, the surface average roughness Ra (JIS B 0601) 0.1 to have good hydrophilicity, water retention, and halftone dot reproducibility.
In order to obtain 2 μm, 40 to 110 HSCs/2.5 mm, and a surface shape, an acidic solution containing ferric ions is sprayed onto the steel plate, or an acidic solution containing ferric ions is sprayed onto the steel plate. After spraying in a solution mainly composed of ferrous ions,
Apply Fe plating. If the surface roughness Ra is less than 0.1 μm, the surface will be close to smooth, so hydrophilicity and water retention will not be sufficient. If it is more than 2 μm, it will be too rough and the image will bleed during printing, making it difficult to obtain good prints. I can't. If the HSC is less than 40 pieces/2.5mm, the adhesion with the photosensitizer and halftone dot reproducibility will be extremely poor.
If it is 110 pieces/2.5 mm or more, the removal of the photosensitizer during development will be poor. Etching by spray method is
Compared to etching by immersion, it not only roughens the surface in a short time, but also increases the number of irregularities per single area, and changes the surface shape, improving hydrophilicity, water retention, adhesion to photosensitizer, and network. Point reproducibility is improved. In particular, the halftone dots on a positive type PS plate must be made smaller than those on a positive original during the ultraviolet exposure process, and in order to make the halftone dots smaller,
It is better to whiten the surface or increase the number of ridges per single length of the surface. Furthermore, since spraying not only roughens the surface but also removes smudges generated by etching, desmatting treatment such as etching by dipping is no longer necessary. Also,
Compared to electrolytic etching, it is advantageous because it does not require electricity. Etching by spraying may be done on one side or both sides of the plate. The treatment liquid used is an acidic solution consisting of a halogen bath containing ferric ions as a main component, a sulfuric acid bath, a nitric acid bath, a mixed bath of a chloride bath and a sulfuric acid bath, and a sulfamic acid bath. The inclusion of ferric ions has the advantage of roughening the surface in a short period of time, since the ferric ions are oxidizing agents compared to simple inorganic acids. Furthermore, since a solution containing ferric ions is used, only Fe is eluted by etching, making bath management easy. The concentration of ferric ion is
It can be carried out within the range of 10g/~ solubility,
If the amount is less than 10 g/min, the liquid deteriorates significantly due to the consumption of ferric ions, which not only makes continuous processing difficult but also makes the surface shape non-uniform. Moreover, if the solubility is higher than that, insoluble ferric compounds are generated, which tends to clog the spray nozzle and cause trouble. Therefore, the upper limit of the ferric ion concentration is regulated by the pH, temperature, and type of salt of the etching solution. PH is preferably in the range of 0 to 5, particularly preferably in the range of 0 to 3.5. If it is 5 or more, the solubility of ferric ions decreases and the generation of insoluble ferric compounds clogs the spray nozzle, and the surface shape becomes non-uniform. To adjust the pH, if the etching solution is a chloride, use hydrochloric acid, and if the etching solution is a sulfate, use sulfuric acid. The temperature range is preferably from room temperature to the boiling point, particularly preferably from room temperature to 80°C or less. If the bath temperature is high, it is possible to increase the liquid concentration, but the dissolution rate of iron becomes significantly faster than when the surface is made rough, which promotes liquid deterioration and tends to make the surface shape non-uniform. It is preferable to use a nozzle type that allows the spray liquid to be in a mist rather than a liquid state. In the atomized form, the number of irregularities per single area in the surface shape increases, and pits with a diameter of 1 μm or less are generated, which makes printing easier, and water retention and halftone dot reproducibility are particularly improved. To prevent liquid deterioration due to an increase in ferrous ions, add an oxidizing agent such as hydrogen peroxide or electrolytically oxidize. In the case of chlorides, liquid deterioration can be easily prevented by blowing chlorine gas. be. Furthermore, when performing Fe plating after etching, the solution reduced to ferrous ions is
It is possible to replenish the plating. In that case,
The Fe plating solution uses the same salt as the etching solution.
Fe plating thickness of spray etching is 0.1 to 5μ
It has a good range of m and is mainly used to adjust the average surface roughness Ra after etching. Further, the plating solution may be a known one, such as a halogen bath, a sulfuric acid bath, a mixed bath of a chloride bath and a sulfuric acid bath, or a sulfamic acid bath, and one containing the same salt as the etching solution is used. Next, it is preferable to perform a surface treatment because simply roughening the steel plate will result in poor corrosion resistance and the generation of red rust, which is undesirable. Surface treatments include single-layer plating of metals such as Cr, Ni, Sn, Cu, and Zn that have a rust-preventing effect on steel sheets, multi-layer plating that combines two or more of these metals, and these metals. There are plating methods such as alloy plating that include one or more of the following. Such surface treatment not only improves corrosion resistance but also effectively affects the adhesion to the ink-philic substance forming the image area. In particular, in the case of plating, appropriate growth of electrodeposited nuclei is effective in roughening the surface. For this reason, it is better to perform surface treatment under uneven plating conditions than under smooth plating conditions. It is economical to set the lower limit of this plating thickness to a value that guarantees the corrosion resistance of the steel plate. Even if it is a cheap metal like Zn,
There is no need to make expensive metals such as Cr or Ni extremely thick. Furthermore, by performing a known chemical conversion treatment that imparts corrosion resistance after plating, not only can the thickness of the plating be further reduced, but also the adhesion with the photosensitizer is improved. The known chemical conversion treatment is
For example, chromate, dichromate, phosphate,
Treatment is by immersion in solutions containing molybdates, silicates, borates, perborates, aluminates, etc. or by electrolysis. Some metals that have been surface-treated to have the above average surface roughness exhibit hydrophilic properties and can be used as plate materials as they are, but many surface-treated metal plates have insufficient hydrophilic properties. Moreover, since the hydrophilicity deteriorates significantly over time, hydrophilic treatment is performed again.
The hydrophilic treatment may be carried out by commonly used known methods, such as silicate treatment, organic titanium compound treatment, organic phosphoric acid treatment, ferrocyanate treatment, gallic acid treatment, phosphotungstic acid treatment, polyacrylic acid or CMC treatment. Examples include, but are not limited to, organic polymer coating treatments such as organic polymer coating treatments or treatments with inorganic compound sol. [Function] The metal plate for printing plates treated in the above-described steps has excellent hydrophilicity, water retention, adhesion to ink-philic substances, halftone dot reproducibility, and printing durability. [Example] The following is a concrete explanation using an example. Example 1 A steel plate with a thickness of 150 μm was coated at a temperature of 30°C with a concentration of 380 g/
Ferric chloride solution (PH 0.8, diluted 5 times and measured)
Spray nozzle (TYPE-S manufactured by Yashu Kogyo Co., Ltd.)
The surface was roughened to an average surface roughness Ra of 0.9 μm by blowing through the mold for 40 seconds. Using a solution containing 250 g of zinc sulfate and 30 g of ammonium sulfate, the temperature was 45°C and the current density was 20 A/dm 2 .
Zn was plated to a thickness of 0.7 μm under the conditions of
1 g of sulfuric acid (temperature: 40°C) for 6 seconds. Next, alumina sol (product name:
AS-200, manufactured by Nissan Chemical) 20g/and silica sol (product name: Snowtex-0, manufactured by Nissan Chemical) 1
Electrolysis was carried out for 20 seconds at a current density of 0.2 A/dm 2 using a steel plate as a cathode in a solution (temperature: 30° C.) containing g/g/g, followed by washing with water and drying. Furthermore, it was immersed for 10 seconds in a solution containing 2 g of phosphoric acid (temperature: 30° C.), washed with water, and then dried to obtain a metal plate for plate material. Example 2 A 50 g/ferric chloride solution (pH 2.1, measured after diluting 5 times) at a temperature of 70°C was passed through a spray nozzle (Model VE, manufactured by Ikeuchi Co., Ltd.) onto a 30 μm thick steel foil.
By spraying for 10 seconds, the average surface roughness Ra can be reduced.
The surface was roughened to 0.2 μm. Add to this Wat bath (nickel sulfate 240g/, nickel chloride 45g/, boric acid)
30g/), temperature 50℃, current density 5A/d
Ni was plated to a thickness of 0.2 μm under conditions of m 2 . Next, a sergeant bath (chromic anhydride 250 g/, sulfuric acid 2.5
g/) at a temperature of 45℃ and a current density of 20A/d.
Plating 0.02 μm of Cr under conditions of m 2 and using Ti sol 60
g/d, using steel foil as a cathode in a solution containing chromic anhydride 1 g/d, at a temperature of 30°C and a current density of 0.2 A/d.
Electrolysis was performed for 30 seconds under the conditions of m2 , washed with water, and dried to obtain a metal plate for plate material. Example 3 A steel plate with a thickness of 250 μm was coated at a temperature of 45°C with a concentration of 200 g/
The surface was roughened to an average surface roughness Ra of 2 μm by spraying a ferric sulfate solution (PH2.7) through a spray nozzle (VP type, manufactured by Ikeuchi Co., Ltd.) for 40 seconds. Add to this a ferrostane bath (80g of stannous sulfate/
, phenolsulfonic acid 80g/, Neugen EN 20g/), Sn was plated to a thickness of 0.07μm at a temperature of 45℃ and a current density of 10A/ dm2 .
In a solution containing 30 g of potassium dichromate,
Temperature: 40℃, current density: 5A/d, using steel plate as cathode
Electrolyzed for 5 seconds at m2 . After washing with water, it was immersed for 30 seconds in a solution (temperature: 40°C) containing 0.9 g of sodium carboxymethyl cellulose, and after washing with water, it was dried to obtain a metal plate for printing plate. Example 4 A ferric chloride solution (PH 0.5, 5 times diluted and measured) was sprayed onto a 100 μm thick steel plate at a temperature of 20°C using a spray nozzle (TYPE-AS model manufactured by Yashu Kogyo Co., Ltd.).
for 30 seconds, then ferrous chloride
800g/temperature 90℃, current density 20A/
By plating Fe with a thickness of 2 μm under the condition of dm 2 ,
The surface was roughened to an average surface roughness Ra of 0.5 μm. to this,
Sargent bath (chromic anhydride 250g/, sulfuric acid
2.5g/), temperature 50℃, current density
0.07μm Cr plating was performed under the condition of 20A/ dm2 ,
Alumina sol (product name: AS-200, manufactured by Nissan Chemical) 80
The metal plate for plate material was obtained by immersing the plate in a solution containing g/g/g at a temperature of 40° C. and a processing time of 30 seconds, washing with water, and drying. Example 5 A 200 g/ferric chloride solution (pH 1.1, measured after diluting 5 times) was sprayed onto a 200 μm thick steel plate at a temperature of 40°C using a spray nozzle (TYPE-EM manufactured by Yashu Kogyo Co., Ltd.).
The surface was roughened to an average surface roughness Ra of 15 μm by blowing it through a mold. In addition, stannous chloride
Using a bath containing nickel chloride 50g/, sodium fluoride 20g/, and hydrochloric acid 10g/, at a temperature of 50℃ and a current density of 2.5A/ dm2 , Ni
-Sn alloy was plated to a thickness of 1 μm and subjected to a known hydrophilic treatment (gum arabic was applied to a thickness of 0.5 μm and dried) to obtain a metal plate for plate material. Comparative Example 1 A steel plate having a thickness of 200 μm and an average surface roughness Ra of 0.5 μm was treated in the same manner as in Example 1 without being subjected to surface roughening treatment.
Zn plating, chromate treatment and hydrophilic treatment were applied. Comparative Example 2 A steel plate with a thickness of 100 μm was coated with Fe plating to a thickness of 5 μm using the same Fe plating solution as in Example 4 at a temperature of 90°C and a current density of 20 A/ dm2 , and the surface average roughness Ra was
The thickness was adjusted to 0.5 μm, and the same Cr plating and hydrophilic treatment as in Example 4 were performed. Comparative Example 3 The same steel plate as in Example 1 was immersed in the same ferric chloride solution as in Example 1 for 40 seconds to roughen the surface to an average surface roughness Ra of 0.5 μm. Furthermore, Example 1
The same Zn plating, chromate treatment and hydrophilic treatment were applied. Comparative Example 4 A commercially available Al-based plate-making material. Comparative Example 1 is an example without surface roughening treatment, Comparative Example 2
1 shows an example in which Fe plating was applied as the surface roughening treatment, and Comparative Example 3 shows an example in which immersion etching was performed as the surface roughening treatment. The following various tests were conducted using the plate metal plate thus obtained. <Surface roughness> Surface roughness was measured using a stylus roughness meter (name: SURF-1A,
Using the High Spot Count (manufactured by Tokyo Seimitsu), extract the measured length of 2.5 mm from the cross-sectional curve and distinguish between peaks and valleys by whether they are located above the average line. The number of peaks) was measured. <Hydrophilicity> Immediately after manufacturing the metal plate for plate material, a positive type photosensitive liquid (product name: Quitswipe on positive type, manufactured by Ueno Chemical) was applied. The weight of the photosensitive liquid applied after drying is
It was 2.0g/ m2 . A positive manuscript film was closely attached to the lithographic printing plate material thus obtained, and a 2kw metal halide lamp (New Idol Fin manufactured by Iwasaki Electric Co., Ltd.) was used.
2000) as a light source for 70 seconds from a distance of 1 m, and a developer (DP-3 manufactured by Fuji Photo Film Co., Ltd.)
An image was formed by immersing it in Development conditions are 25℃, 45℃
seconds. Hydrophilicity was determined by dropping water onto the hydrophilic area on the plate thus obtained and measuring the contact angle. contact angle
If it was 20° or less, it was marked ○, if it was 20 to 40°, it was marked △, and if it was 40° or more, it was marked ×. <Half dot reproducibility> For the dot reproducibility, the halftone dots (48.9% halftone dots, 150 lines of positive manuscript) of the plate prepared for hydrophilicity evaluation were magnified 50 times and the halftone dot area was measured. For evaluation, if the difference from the positive original was 5% or more, it was marked ◯, if it was 3 to 5%, it was marked △, and if it was 3% or less, it was marked x. <Printing durability> Printing durability was evaluated by offset printing the plate prepared for hydrophilicity evaluation and printing up to 50,000 sheets. [Effects of the invention] The evaluation results are shown in Table 1.
【表】【table】
【表】
第1表に示すように、実施例1〜5の本発明に
よる版材用金属板は、市販Alベース製版材と比
べて網点再現性及び耐刷性の点ですぐれている。
また、粗面化処理をスプレー式エツチング及びス
プレー式エツチング後Feめつきで行うことによ
り、網点再現性及び耐刷性が改善された。
耐刷性は、実施例1〜4については5万枚印刷
しても異常は認められなかつたが、比較例1は1
万枚で画像が剥離した。比較例2と3は4万枚
で、比較例4は2万枚で一部画像が剥離した。[Table] As shown in Table 1, the metal plates for plate materials according to the present invention of Examples 1 to 5 are superior in halftone dot reproducibility and printing durability compared to commercially available Al-based plate making materials.
In addition, halftone dot reproducibility and printing durability were improved by performing surface roughening treatment by spray etching and Fe plating after spray etching. Regarding printing durability, no abnormality was observed even after printing 50,000 sheets for Examples 1 to 4, but Comparative Example 1
The image peeled off after 10,000 copies. In Comparative Examples 2 and 3, some images peeled off after 40,000 sheets, and in Comparative Example 4, after 20,000 sheets.
Claims (1)
さが0.1〜2μm、HSCが40〜110個/2.5mmになる
ように第2鉄イオンを主成分とした酸性溶液をス
プレーによる方法で吹きつけることを特徴とする
版材用金属板の粗面化処理法。 2 厚み30〜250μmを有する鋼板に表面平均粗
さが0.1〜2μm、HSCが40〜110個/2.5mmになる
ように、第2鉄イオンを主成分とした酸性溶液を
スプレーによる方法で吹きつけた後、第1鉄イオ
ンを主成分とした溶液で厚み0.1〜5μmのFeめつ
きを施すことを特徴とする版材用金属板の粗面化
処理法。[Claims] 1. An acidic solution containing ferric ions as a main component is sprayed onto a steel plate having a thickness of 30 to 250 μm so that the average surface roughness is 0.1 to 2 μm and the number of HSCs is 40 to 110 pieces/2.5 mm. A method for roughening the surface of a metal plate for plate material, which is characterized by spraying the surface by a method of: 2. Spray an acidic solution containing ferric ions as the main component onto a steel plate having a thickness of 30 to 250 μm so that the average surface roughness is 0.1 to 2 μm and the number of HSCs is 40 to 110 pieces/2.5 mm. A method for roughening the surface of a metal plate for printing plates, which comprises applying Fe plating to a thickness of 0.1 to 5 μm using a solution containing ferrous ions as a main component.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11221685A JPS61270380A (en) | 1985-05-27 | 1985-05-27 | Method for roughening surface of metallic sheet for printing plate |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11221685A JPS61270380A (en) | 1985-05-27 | 1985-05-27 | Method for roughening surface of metallic sheet for printing plate |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS61270380A JPS61270380A (en) | 1986-11-29 |
JPS6345459B2 true JPS6345459B2 (en) | 1988-09-09 |
Family
ID=14581161
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11221685A Granted JPS61270380A (en) | 1985-05-27 | 1985-05-27 | Method for roughening surface of metallic sheet for printing plate |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS61270380A (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110423999A (en) * | 2019-08-30 | 2019-11-08 | 深圳市天得一环境科技有限公司 | A kind of stainless steel surface hydrophilic treatment method |
-
1985
- 1985-05-27 JP JP11221685A patent/JPS61270380A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS61270380A (en) | 1986-11-29 |
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