JPH03257199A - Production of aluminum base for printing plate - Google Patents
Production of aluminum base for printing plateInfo
- Publication number
- JPH03257199A JPH03257199A JP5375890A JP5375890A JPH03257199A JP H03257199 A JPH03257199 A JP H03257199A JP 5375890 A JP5375890 A JP 5375890A JP 5375890 A JP5375890 A JP 5375890A JP H03257199 A JPH03257199 A JP H03257199A
- Authority
- JP
- Japan
- Prior art keywords
- aluminum plate
- treatment
- aqueous solution
- aluminum
- neutral salt
- 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.)
- Pending
Links
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 60
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 59
- 238000007639 printing Methods 0.000 title claims abstract description 11
- 238000004519 manufacturing process Methods 0.000 title claims description 6
- 238000000034 method Methods 0.000 claims abstract description 29
- 230000007935 neutral effect Effects 0.000 claims abstract description 24
- 239000007864 aqueous solution Substances 0.000 claims description 31
- 238000005868 electrolysis reaction Methods 0.000 claims description 21
- 239000012266 salt solution Substances 0.000 claims 1
- 238000007788 roughening Methods 0.000 abstract description 35
- 150000003839 salts Chemical class 0.000 abstract description 22
- 238000005530 etching Methods 0.000 abstract description 7
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 12
- 230000002378 acidificating effect Effects 0.000 description 10
- 239000003792 electrolyte Substances 0.000 description 10
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 8
- 238000005406 washing Methods 0.000 description 7
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 5
- 238000004140 cleaning Methods 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 4
- 239000010731 rolling oil Substances 0.000 description 4
- 239000011780 sodium chloride Substances 0.000 description 4
- 235000011121 sodium hydroxide Nutrition 0.000 description 4
- 238000004090 dissolution Methods 0.000 description 3
- 229910052697 platinum Inorganic materials 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 2
- 238000002048 anodisation reaction Methods 0.000 description 2
- 238000007645 offset printing Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- VWDWKYIASSYTQR-UHFFFAOYSA-N sodium nitrate Chemical compound [Na+].[O-][N+]([O-])=O VWDWKYIASSYTQR-UHFFFAOYSA-N 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 239000004115 Sodium Silicate Substances 0.000 description 1
- 229910001508 alkali metal halide Inorganic materials 0.000 description 1
- 150000008045 alkali metal halides Chemical class 0.000 description 1
- 229910001963 alkali metal nitrate Inorganic materials 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- -1 aluminum ions Chemical class 0.000 description 1
- 238000007743 anodising Methods 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- WMWXXXSCZVGQAR-UHFFFAOYSA-N dialuminum;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3] WMWXXXSCZVGQAR-UHFFFAOYSA-N 0.000 description 1
- 238000000502 dialysis Methods 0.000 description 1
- HTXDPTMKBJXEOW-UHFFFAOYSA-N dioxoiridium Chemical compound O=[Ir]=O HTXDPTMKBJXEOW-UHFFFAOYSA-N 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 229910000457 iridium oxide Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 235000010344 sodium nitrate Nutrition 0.000 description 1
- 239000004317 sodium nitrate 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
- 239000000126 substance Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Landscapes
- Printing Plates And Materials Therefor (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は印刷版用アルミニウム支持体の製造方法に関す
るものであり、詳しくはアルミニウム板（アルミニウム
合金を含む）を電気化学的に粗面化処理と電気化学的な
表面変性処理をおこなう方法に関するもので、特にオフ
セット印刷版用に適する均一に粗面化処理されたアルミ
ニウム板からなる印刷版用アルミニウム支持体の製造方
法に関するものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a method for producing an aluminum support for a printing plate, and more specifically, it relates to an electrochemical roughening treatment of an aluminum plate (including an aluminum alloy). The present invention relates to a method of carrying out an electrochemical surface modification treatment, and in particular to a method of producing an aluminum support for a printing plate made of a uniformly roughened aluminum plate suitable for use in offset printing plates.
［従来の技術］
従来よりオフセット印刷版用支持体としてアルミニウム
板が使用されているが、その表面は、その上に設けられ
た感光層との密着性を良好にすることと、印刷時に使用
する湿し水を保持することなどを目的として粗面化され
るのが通例である。[Prior Art] Aluminum plates have traditionally been used as supports for offset printing plates. The surface is usually roughened for purposes such as retaining dampening water.
かかる粗面化処理方法として、ボールダレイニング、ブ
ラシダレイニングなどの機械的粗面化処理方法が知られ
ているが、近年、塩酸、硝酸などの酸性電解液中でアル
ミニウム板の表面を電気化学的に粗面化処理をする電解
粗面化処理方法が注目されている。この電解粗面化処理
方法によれば、従来の機械的粗面化処理方法に比べて平
均粗さ分布の小さな均一な粗面を有するアルミニウム板
が得られるがそのような粗面を得るための条件は極めて
狭く、電解液組成、温度、電解条件などの諸条件を一定
にすれば、製品のばらつきも極めて少なく均一な性能を
有するものを容易に得ることができる。電解粗面化処理
の方法としては、米国特許第４５４８６８３号明細書、
同第４０８７３４１号明細書などに示しである方法が一
般的に知られている。Mechanical surface roughening treatment methods such as boulder raining and brushed raining are known as such surface roughening treatment methods. Electrolytic surface roughening treatment methods that perform surface roughening treatment are attracting attention. According to this electrolytic surface roughening treatment method, an aluminum plate having a uniformly roughened surface with a small average roughness distribution can be obtained compared to conventional mechanical surface roughening treatment methods, but it is difficult to obtain such a roughened surface. The conditions are extremely narrow, and by keeping various conditions such as electrolyte composition, temperature, and electrolytic conditions constant, it is possible to easily obtain products with uniform performance with very little variation. As a method of electrolytic surface roughening treatment, US Pat. No. 4,548,683,
The method described in the specification of the same No. 4087341 is generally known.
そして、交流を用いて電気化学的に粗面化処理をおこな
うとき、被粗面化アルミニウム板の対極としてカーボン
極を用いることが常法である。対極にカーボンを用いた
時に特公昭６１−４８５９６号公報に記載されているよ
うにカーボン極はバインダーなどの劣化により溶解して
いく。そこで、前記公告特許では補助極を用い、主極に
流れる電流をダイオードなどの整流子を用いて分流し、
主極から流れ出る電流が流れ込んでくる電流よりも少な
くなるように抑制することで主極の溶解を抑止している
。この方法の応用例としては、米国特許第４５３３４４
４号明細書、同第４５９７８５３号明細書、同第４５３
６２６４号明細書などが公知となっている。又、アルミ
ニウム板を中性塩水溶液中で電気化学的に粗面化処理す
る方法としては、特開昭５２−２６９０４号公報が公知
となっている。特開昭５９−１１２９５号公報では中性
塩水溶液中での陰極電解により電気化学的にアルミニウ
ム板の表面を変性する方法が示されている。特に有利な
条件であるｐＨ６〜８の中性塩水溶液においては、溶解
したアルミニウムイオンは水酸化アルミニウムまたは酸
化アルミニウム水和物の形で沈澱するため濾過または遠
心分離により、中性塩水溶液から連続的に除去すること
が可能であることが記述されている。When performing electrochemical surface roughening treatment using alternating current, it is a common practice to use a carbon electrode as a counter electrode to the aluminum plate to be roughened. When carbon is used as the counter electrode, the carbon electrode dissolves due to deterioration of the binder, etc., as described in Japanese Patent Publication No. 61-48596. Therefore, in the published patent, an auxiliary pole is used and the current flowing to the main pole is shunted using a commutator such as a diode.
Melting of the main electrode is suppressed by suppressing the current flowing out from the main electrode to be less than the current flowing into the main electrode. An example of application of this method is U.S. Pat. No. 453344.
Specification No. 4, Specification No. 4597853, Specification No. 453
6264 specification etc. are publicly known. Furthermore, as a method for electrochemically roughening an aluminum plate in a neutral salt aqueous solution, Japanese Patent Laid-Open No. 52-26904 is known. JP-A-59-11295 discloses a method of electrochemically modifying the surface of an aluminum plate by cathodic electrolysis in a neutral salt aqueous solution. Under particularly advantageous conditions, in a neutral salt aqueous solution with a pH of 6 to 8, dissolved aluminum ions are precipitated in the form of aluminum hydroxide or aluminum oxide hydrate, so that they can be continuously removed from the neutral salt aqueous solution by filtration or centrifugation. It is stated that it is possible to remove the
印刷版用支持体を電解粗面化処理するときの常法として
、電解粗面化処理の前には、圧延油等の汚れ、および自
然酸化皮膜の除去を目的とした苛性ソーダによる洗浄処
理が、電解粗面化処理の後には電解粗面化処理で生成し
た水酸化アルミニウムの除去と、生成したピットのエツ
ジ部分の形状を整えるための目的の苛性ソーダによる軽
度なエツチング処理がおこなわれている。しかしながら
苛性ソーダによる化学的な溶解反応であるため、溶解量
の抑制は難しかった。又苛性ソーダ中に溶出したアルミ
ニウムの除去には透析膜などを用いるために廃液処理コ
ストは大きかった。又公知特許で使用されている補助電
極は、主極の溶解抑制が目的であり、補助極での反応は
何ら粗面化反応に寄与しておらず、設備コスト的には不
利な点が多かった。特に米国特許第４５３３４４４号明
細書に記載のように、補助極槽を別に設けたときなど設
備コスト面での不利益は大であった。As a conventional method when electrolytically roughening a printing plate support, washing treatment with caustic soda is performed for the purpose of removing dirt such as rolling oil and natural oxide film before the electrolytically roughening treatment. After the electrolytic surface roughening treatment, a light etching treatment with caustic soda is performed to remove the aluminum hydroxide generated during the electrolytic surface roughening treatment and to adjust the shape of the edges of the generated pits. However, since it is a chemical dissolution reaction using caustic soda, it was difficult to suppress the amount of dissolution. Furthermore, since a dialysis membrane or the like is used to remove the aluminum eluted into the caustic soda, the cost of wastewater treatment is high. In addition, the purpose of the auxiliary electrode used in known patents is to suppress dissolution of the main electrode, and the reaction at the auxiliary electrode does not contribute to the surface roughening reaction, which has many disadvantages in terms of equipment cost. Ta. In particular, as described in US Pat. No. 4,533,444, when an auxiliary electrode tank is provided separately, there is a large disadvantage in terms of equipment costs.
これらの問題点を解決するため、特願平１−２６５２８
８号明細書に記載したように、中性塩水溶液中での陰極
電解処理を電解粗面化の前後に用いてエツチングによる
洗浄、あるいはスマット除去およびピットのエツジ部分
の整形等の処理の役割としておこなう方法がよく知られ
ている。In order to solve these problems, patent application No. 1-26528
As described in Specification No. 8, cathodic electrolytic treatment in a neutral salt aqueous solution is used before and after electrolytic surface roughening to perform cleaning by etching, or to remove smut and shape the edges of pits. The method of doing this is well known.
［発明が解決しようとする問題点］
前記の特願平１−２６５２８８号明細書に記載の方法で
はアルミニウム板の片面しかエツチング処理できないた
め、非処理面に付着している圧延油等汚れの除去ができ
ず、アルミニウム板上の圧延油等の汚れがロールに転写
し、故障の原因となるという問題点があった。また当然
、アルミニウム板の両面を粗面化したときは、どちらか
片面のエツチングによる洗浄、あるいはスマット除去処
理およびピットのエツジ部分の整形等の処理はおこなえ
なかった。[Problems to be Solved by the Invention] Since the method described in the above-mentioned Japanese Patent Application No. 1-265288 allows etching treatment on only one side of an aluminum plate, it is difficult to remove stains such as rolling oil attached to the untreated side. There was a problem in that dirt such as rolling oil on the aluminum plate was transferred to the roll and caused failure. Naturally, when both sides of an aluminum plate are roughened, cleaning by etching, smut removal treatment, and shaping of pit edges cannot be performed on either side.
本発明の目的は、アルミニウム板の両面をエツチングに
よる洗浄、あるいはスマット除去処理する印刷版用アル
ミニウム支持体の製造方法を提供することにある。An object of the present invention is to provide a method for producing an aluminum support for a printing plate in which both surfaces of an aluminum plate are subjected to etching cleaning or smut removal treatment.
［課題を解決するための手段］
本発明の上記目的は、中性塩水溶液中を主体とする水溶
液中で陰極電解処理をしアルミニウム板の電気化学的処
理をおこなう方法において、アルミニウム板に対向する
電極をアルミニウム板の表裏両面に対向するように設置
し、アルミニウム板の両面を処理することをおこなうこ
とによって達成される。[Means for Solving the Problems] The above object of the present invention is to provide a method for electrochemically treating an aluminum plate by cathodic electrolytic treatment in an aqueous solution mainly containing a neutral salt aqueous solution. This is achieved by placing electrodes facing each other on both the front and back sides of the aluminum plate, and processing both sides of the aluminum plate.
本発明の実施態様を添付図を用いて説明する。Embodiments of the present invention will be described using the accompanying drawings.
第１図では、先ずアルミニウム板（１）は前処理の中性
水溶液中での陰極電解工程（Ａ）で圧延油などをエツチ
ングによって清浄処理をおこない、次に第１段および第
２段の電解粗面化処理工程（Ｂ）で片面づつ２段の交流
粗面化処理をおこない、続いて中性水溶液中での陰極電
解工程（Ａ）および、酸性電解液中での陰極電解工程（
Ｄ）で両面同時のスマットの除去と、粗面化処理工程で
生成したビットのエツジ部分の形状を整える処理をおこ
なう工程を示している。更に、次工程として保水性向上
のためやはり両面同時処理の陽極酸化工程（Ｃ）が示さ
れているが本発明の製造方法では必須の工程ではない。In Figure 1, the aluminum plate (1) is first cleaned by etching rolling oil etc. in a pretreatment cathodic electrolysis step (A) in a neutral aqueous solution, then the first and second stages of electrolysis. In the surface roughening treatment step (B), two stages of alternating current roughening treatment are performed on each side, followed by a cathode electrolysis step (A) in a neutral aqueous solution and a cathode electrolysis step in an acidic electrolyte (
D) shows the process of simultaneously removing smut from both sides and adjusting the shape of the edge portion of the bit generated in the surface roughening process. Further, as a next step, an anodizing step (C) in which both sides are treated simultaneously is shown to improve water retention, but this step is not an essential step in the manufacturing method of the present invention.
前処理の陰極電解工程（Ａ）では交流電源（２〉よりダ
イオード整流装置（３）（以下ダイオードと略記する）
によって分流された直流電流を補助電極（８および８°
〉に給電し、補助電極と対向するアルミニウム板（１〉
を陰極として中性塩水溶液（９）中で直流電解処理する
ことによってアルミニウム板の両側表面の洗浄をおこな
う。In the pretreatment cathode electrolysis step (A), a diode rectifier (3) (hereinafter abbreviated as diode) is used from the AC power supply (2).
The direct current shunted by the auxiliary electrodes (8 and 8°
〉, and an aluminum plate (1〉) facing the auxiliary electrode.
Both surfaces of the aluminum plate are cleaned by direct current electrolytic treatment in a neutral salt aqueous solution (9) using as a cathode.
前処理されたアルミニウム板（１）は水洗工程（Ｗ）で
水洗スプレー（１４）により水洗された後第１段及び第
２段の電解粗面化処理工程（Ｂ）に送られ交流電源（２
）から給電される対向する主極〈４）によって酸性電解
液（１０）中で片側づつ２段階に電解粗面化処理される
。粗面化処理されたアルミニウム板は、中性塩水溶液中
での陰極電解処理工程（Ａ）に送られる。The pretreated aluminum plate (1) is washed with water using a washing spray (14) in a water washing step (W), and then sent to the first and second electrolytic surface roughening treatment steps (B), where it is powered by an AC power source (2).
) is subjected to electrolytic surface roughening treatment in two stages, one side at a time, in an acidic electrolyte (10) by opposing main electrodes (4) supplied with power. The roughened aluminum plate is sent to a cathodic electrolytic treatment step (A) in a neutral salt aqueous solution.
ここでは交流電源（２）よりダイオード（３）によって
分流された直流電流を補助電極（８および８′）に給電
し、補助電極と対、Ｑコするアルミニウム板（１）を陰
極として、中性塩水溶液（９）中で直流陰極電解処理す
ることによって、粗面化されたアルミニウム板の表面の
スマットを除去すると同時に粗面化工程で生成したピッ
トのエツジ部分の形状を整える。Here, a DC current shunted by a diode (3) from an AC power source (2) is supplied to the auxiliary electrodes (8 and 8'), and an aluminum plate (1) that is opposite to the auxiliary electrode is used as a cathode. By performing direct current cathodic electrolysis treatment in a salt aqueous solution (9), smut on the surface of the roughened aluminum plate is removed, and at the same time, the shape of the edge portion of the pits generated in the roughening process is adjusted.
更に粗面化されたアルミニウム板の表面の白さを向上さ
せるため、水洗工程（Ｗ）を経て酸性電解液（１１）中
での陰極電解処理工程（Ｄ）を通す。 この陰極電解処
理工程（Ｄ）と印刷版用支持体の製造工程としては殆ど
きまっておこなはれる陽極酸化処理工程（Ｃ）はそれぞ
れ直流電源（５）によって給電される陽極（６および６
゛）および陰極（７および７”）を対極として酸性電解
液中でおこなわれる。In order to further improve the whiteness of the surface of the roughened aluminum plate, it is subjected to a water washing step (W) and then to a cathode electrolytic treatment step (D) in an acidic electrolyte (11). This cathodic electrolytic treatment step (D) and the anodization treatment step (C), which is almost always carried out in the manufacturing process of a printing plate support, are performed at anodes (6 and 6), which are powered by a DC power source (5), respectively.
The test is carried out in an acidic electrolyte using the cathode (7" and 7") as counter electrodes.
第１図はまた交流電源（２〉及び直流電源（３）から補
助電源に電流を分流して反応に直接寄与していなかった
補助極を反応に役割を与える例を示している。FIG. 1 also shows an example in which the current is shunted from the AC power source (2) and the DC power source (3) to the auxiliary power source so that the auxiliary electrode, which was not directly contributing to the reaction, is given a role in the reaction.
次に本発明について順次その要件を説明する。Next, the requirements of the present invention will be sequentially explained.
本発明に適用されるアルミニウム板としては、純アルミ
ニウム板またはアルミニウムを主成分とする合金板など
が挙げられる。Examples of the aluminum plate applicable to the present invention include a pure aluminum plate and an alloy plate containing aluminum as a main component.
本発明において中性塩水溶液を主体とする水溶液中でア
ルミニウム板の電気化学的な処理をおこなうということ
は、直流電流を電極に給電し、電極と対向するアルミニ
ウム板を陰極として中性塩水溶液中で陰極電解処理する
ことをいう。中性塩水溶液は特開昭５２−２６９０４号
公報や特開昭５９−１１２９５号に記載されているよう
な中性塩の水溶液であり、アルカリ金属ハロゲン化物ま
たはアルカリ金属硝酸塩であり、特に塩化ナトリウム、
硝酸ナトリウムが好ましい。ｐＨは６〜８が好ましい。In the present invention, the electrochemical treatment of an aluminum plate in an aqueous solution mainly consisting of a neutral salt aqueous solution means that a direct current is supplied to the electrode, and the aluminum plate facing the electrode is used as a cathode in the neutral salt aqueous solution. This refers to cathodic electrolysis treatment. The neutral salt aqueous solution is an aqueous solution of a neutral salt as described in JP-A-52-26904 and JP-A-59-11295, and is an alkali metal halide or an alkali metal nitrate, especially sodium chloride. ,
Sodium nitrate is preferred. The pH is preferably 6-8.
濃度は０．１〜１０％が好ましい。液温は４０〜７０℃
が好ましい。陰極電解に用いるアルミニウムに対向する
電極としては白金、フェライト、酸化イリジウムなどが
使用可能であるが、特に白金が好ましい。本発明でいう
陰極電解に用いる直流の電流密度は０．１〜１００Ａ／
ｄｒｎ”が好ましい。電解処理時間は１〜９０秒の範囲
にあることが好ましい。 中性塩水溶液中での陰極電解
に用いる直流電源は専用に設けてもよいが、電解粗面化
処理に使用する電源の一部を使用してもよい。特にアル
ミニウム板を交流を用いて連続的に電気化学的に粗面化
処理をするときは粗面化処理に用いる電流の一部を整流
装置を介して分流し、その分流した電流を中性塩水溶液
中での陰極電解に使用することが好ましい。粗面化処理
に用いる電流の一部を整流装置を介して分流するという
ことは、ダイオードミサイリスタ、ＧＴ○、トランジス
タなどを用いて分流することをいう。このときの中性塩
水溶液中での陰極電解洗浄処理の電流調整は、主極と陰
極電解に用いる電極との面積の比率や、サイリスタ、Ｇ
Ｔ○、トランジスタの点孤タイミングによって制御可能
である。The concentration is preferably 0.1 to 10%. Liquid temperature is 40-70℃
is preferred. Platinum, ferrite, iridium oxide, and the like can be used as the electrode facing aluminum used in cathode electrolysis, and platinum is particularly preferred. The current density of the direct current used for cathode electrolysis in the present invention is 0.1 to 100 A/
drn" is preferable. The electrolytic treatment time is preferably in the range of 1 to 90 seconds. A DC power source used for cathode electrolysis in a neutral salt aqueous solution may be provided exclusively, but it is preferable to use it for electrolytic surface roughening treatment. Part of the current used for the roughening process may be passed through a rectifier, especially when an aluminum plate is subjected to continuous electrochemical roughening treatment using alternating current. It is preferable to divide the current through a rectifier and use the divided current for cathode electrolysis in a neutral salt aqueous solution. , GT○, means to divide the current using transistors, etc. At this time, the current adjustment for cathode electrolytic cleaning treatment in a neutral salt aqueous solution is determined by adjusting the area ratio of the main electrode and the electrode used for cathode electrolysis, and by adjusting the thyristor. ,G
T○ can be controlled by the firing timing of the transistor.
上記した本発明の処理方法をおこなったアルミニウム板
は（すなわち添付図の工程）、更に付加的処理、例えば
珪酸ソーダ水溶液への浸漬をおこなって、より優れた印
刷版支持体とすることができる。The aluminum plate subjected to the above-described treatment method of the present invention (i.e., the process shown in the accompanying drawings) can be further subjected to additional treatment, such as immersion in an aqueous sodium silicate solution, to provide an even better printing plate support.
［実施例］
本発明の実施例を以下に示すが本発明はこれに限定され
るものではない。[Example] Examples of the present invention are shown below, but the present invention is not limited thereto.
（実施例）
ＪＩＳ１０５０−Ｈ１８アルミニウム板を第１図に示す
装置において連続的に電解粗面化処理をおこなった。(Example) A JIS1050-H18 aluminum plate was subjected to continuous electrolytic surface roughening treatment in the apparatus shown in FIG.
中性塩水溶液中で陰極電解処理することによってアルミ
ニウム板の表面の洗浄をおこなう前処理における中性塩
電解液の条件は、塩化ナトリウム５％水溶液、温度６０
℃であった。The conditions for the neutral salt electrolyte in the pretreatment of cleaning the surface of the aluminum plate by cathodic electrolytic treatment in a neutral salt aqueous solution are: 5% sodium chloride aqueous solution, temperature 60°C.
It was ℃.
塩化ナトリウム水溶液中での陰極電解に使用する直流電
圧は電解粗面化処理に使用する交流電源からダイオード
を用いて分流した。The DC voltage used for cathode electrolysis in an aqueous sodium chloride solution was shunted using a diode from the AC power supply used for electrolytic surface roughening treatment.
電流密度は５Ａ／ｄｍ２で６秒間アルミニウム板を陰極
とし、白金メツキ電極を対極として陰極電解をおこなっ
た。Cathodic electrolysis was carried out at a current density of 5 A/dm2 for 6 seconds using the aluminum plate as a cathode and the platinum plated electrode as a counter electrode.
次ぎに交流を用いて酸性電解液中で電気化学的に粗面化
する粗面化処理工程における酸性電解液の条件は塩酸１
％水溶液、温度３５℃であった。Next, the condition of the acidic electrolyte in the surface roughening treatment step is to electrochemically roughen the surface in an acidic electrolyte using alternating current.
% aqueous solution at a temperature of 35°C.
電流密度は５０Ａ／ｄｍ”で１２秒間カーボンを対極と
し、矩形波交流を使って電解粗面化処理をおこなった、
処理槽は片面づつ２槽使用した。Electrolytic surface roughening treatment was performed using square wave alternating current with carbon as the counter electrode at a current density of 50 A/dm for 12 seconds.
Two treatment tanks were used, one for each side.
塩化ナトリウム水溶液での陰極電解と酸性電解液中での
電解粗面化に用いる電極の面積比率はそれぞれ１：２で
ある。The area ratio of the electrodes used for cathodic electrolysis in an aqueous sodium chloride solution and for electrolytic surface roughening in an acidic electrolyte is 1:2, respectively.
次ぎにＮａ（１！水溶液５％中６０℃で、電流密度は５
Ａ／ｄｍ２で６秒間アルミニウム板を陰極電解処理をお
こなった。Next, Na (1! At 60 °C in a 5% aqueous solution, the current density was 5
The aluminum plate was subjected to cathodic electrolysis treatment at A/dm2 for 6 seconds.
このように処理したアルミニウム板の表面を走査型電子
顕微鏡で観察したところ電解粗面化で生成したスマット
の存在は認められず、均一に粗面化されており印刷版と
して好適な粗面を有していた。When the surface of the aluminum plate treated in this way was observed using a scanning electron microscope, no smut generated by electrolytic roughening was found, and the surface was uniformly roughened, making it suitable for use as a printing plate. Was.
［発明の効果］
中性塩水溶液中を主体とする水溶液中で陰極電解処理を
しアルミニウム板の電気化学的処理をおこなう方法にお
いて、アルミニウム板に対向する電極をアルミニウム板
の表裏両面に対向するように設置し、アルミニウム板の
両面を処理することを特徴とする印刷版用アルミニウム
支持体の電気化学的な処理方法により有利に連続的に粗
面化処理することが可能となった。[Effect of the invention] In a method of electrochemically treating an aluminum plate by cathodic electrolysis treatment in an aqueous solution mainly containing a neutral salt aqueous solution, electrodes facing the aluminum plate are placed so as to face both the front and back surfaces of the aluminum plate. An electrochemical treatment method for an aluminum support for a printing plate, which is characterized in that the aluminum support is placed on the substrate and treated on both sides of the aluminum plate, has made it possible to advantageously carry out continuous surface roughening treatment.
添付図は本発明の実施態様を示す処理設備の概要図であ
る。
図において
１・ アルミニウム板 ２ 交流電源３・ダイオー
ド ４ 主（電）極５ 直流電源
６ 陽極
７ 陰極 ８ 補助（電）極９ 中性塩
水溶液
ｌＯ酸性電解液〈アルミニウム板粗面化処理用〉１１
酸性水溶液（スマット除去、陽極酸化用）処理槽
１３ 水洗槽
水洗スプレー １５ ロール
抵抗器
陰極電解工程（中性塩水溶液）
電解粗面化処理工程 Ｃ陽極酸化工程
水洗工程
陰極電解工程（酸性水溶液）
５６９−The accompanying figure is a schematic diagram of a processing facility illustrating an embodiment of the invention. In the figure: 1. Aluminum plate 2. AC power source 3. Diode 4. Main (electrode) pole 5. DC power source
6 Anode 7 Cathode 8 Auxiliary (electrode) electrode 9 Neutral salt aqueous solution lO acidic electrolyte (for aluminum plate roughening treatment) 11
Acidic aqueous solution (for smut removal and anodic oxidation) treatment tank
13 Washing tank Washing spray 15 Roll resistor cathode electrolysis process (neutral salt aqueous solution) Electrolytic surface roughening treatment process C Anodization process Water washing process Cathode electrolysis process (acidic aqueous solution) 569-
Claims (1)
しアルミニウム板の電気化学的処理をおこなう方法にお
いて、アルミニウム板に対向する電極をアルミニウム板
の表裏両面に対向するように設置し、アルミニウム板の
両面を処理することを特徴とする印刷版用アルミニウム
支持体の製造方法。In this method, an aluminum plate is electrochemically treated by cathodic electrolysis treatment in an aqueous solution containing mainly a neutral salt solution. A method for producing an aluminum support for printing plates, characterized in that both sides of the plate are treated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5375890A JPH03257199A (en) | 1990-03-07 | 1990-03-07 | Production of aluminum base for printing plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5375890A JPH03257199A (en) | 1990-03-07 | 1990-03-07 | Production of aluminum base for printing plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03257199A true JPH03257199A (en) | 1991-11-15 |
Family
ID=12951718
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5375890A Pending JPH03257199A (en) | 1990-03-07 | 1990-03-07 | Production of aluminum base for printing plate |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03257199A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0620124A3 (en) * | 1993-04-05 | 1995-07-26 | Fuji Photo Film Co Ltd | Planographic printing plate and method of manufacturing support therefor. |
| EP1625944A1 (en) | 2004-08-13 | 2006-02-15 | Fuji Photo Film Co., Ltd. | Method of manufacturing lithographic printing plate support |
| EP1712368A1 (en) | 2005-04-13 | 2006-10-18 | Fuji Photo Film Co., Ltd. | Method of manufacturing a support for a lithographic printing plate |
| EP2100677A1 (en) | 2008-03-06 | 2009-09-16 | Fujifilm Corporation | Method of manufacturing aluminum alloy plate for lithographic printing plate, aluminum alloy plate for lithographic printing plate obtained thereby and lithographic printing plate support |
| WO2010038812A1 (en) | 2008-09-30 | 2010-04-08 | 富士フイルム株式会社 | Electrolytic treatment method and electrolytic treatment device |
| WO2010150810A1 (en) | 2009-06-26 | 2010-12-29 | 富士フイルム株式会社 | Light reflecting substrate and process for manufacture thereof |
| WO2011037005A1 (en) | 2009-09-24 | 2011-03-31 | 富士フイルム株式会社 | Lithographic printing original plate |
| EP2384100A2 (en) | 2010-04-28 | 2011-11-02 | Fujifilm Corporation | Insulated light-reflective substrate |
| WO2018235659A1 (en) | 2017-06-21 | 2018-12-27 | 富士フイルム株式会社 | Composite aluminum material |
-
1990
- 1990-03-07 JP JP5375890A patent/JPH03257199A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0620124A3 (en) * | 1993-04-05 | 1995-07-26 | Fuji Photo Film Co Ltd | Planographic printing plate and method of manufacturing support therefor. |
| EP1625944A1 (en) | 2004-08-13 | 2006-02-15 | Fuji Photo Film Co., Ltd. | Method of manufacturing lithographic printing plate support |
| EP1712368A1 (en) | 2005-04-13 | 2006-10-18 | Fuji Photo Film Co., Ltd. | Method of manufacturing a support for a lithographic printing plate |
| EP2100677A1 (en) | 2008-03-06 | 2009-09-16 | Fujifilm Corporation | Method of manufacturing aluminum alloy plate for lithographic printing plate, aluminum alloy plate for lithographic printing plate obtained thereby and lithographic printing plate support |
| WO2010038812A1 (en) | 2008-09-30 | 2010-04-08 | 富士フイルム株式会社 | Electrolytic treatment method and electrolytic treatment device |
| WO2010150810A1 (en) | 2009-06-26 | 2010-12-29 | 富士フイルム株式会社 | Light reflecting substrate and process for manufacture thereof |
| WO2011037005A1 (en) | 2009-09-24 | 2011-03-31 | 富士フイルム株式会社 | Lithographic printing original plate |
| EP2384100A2 (en) | 2010-04-28 | 2011-11-02 | Fujifilm Corporation | Insulated light-reflective substrate |
| WO2018235659A1 (en) | 2017-06-21 | 2018-12-27 | 富士フイルム株式会社 | Composite aluminum material |
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