JPH07137471A - Direct drawing type planographic printing plate material and production thereof - Google Patents
Direct drawing type planographic printing plate material and production thereofInfo
- Publication number
- JPH07137471A JPH07137471A JP31107193A JP31107193A JPH07137471A JP H07137471 A JPH07137471 A JP H07137471A JP 31107193 A JP31107193 A JP 31107193A JP 31107193 A JP31107193 A JP 31107193A JP H07137471 A JPH07137471 A JP H07137471A
- Authority
- JP
- Japan
- Prior art keywords
- water
- zinc oxide
- printing
- printing layer
- plate material
- 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
Landscapes
- Manufacture Or Reproduction Of Printing Formes (AREA)
- Printing Plates And Materials Therefor (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は直描型平版印刷版材料及
びその製造方法に関し、更に詳しくは熱転写又は静電転
写方式により製版可能で、印刷汚れの発生がなく、かつ
耐刷性が良好な直描型平版印刷版材料とその製造方法に
関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a direct drawing type lithographic printing plate material and a method for producing the same, and more specifically, it can be plate-formed by a thermal transfer method or an electrostatic transfer method, has no printing stain and has good printing durability. Direct drawing type lithographic printing plate material and its manufacturing method.
【０００２】[0002]
【従来の技術】最近の事務能率化の進展に伴い、軽印刷
分野においては、熱転写プリンタ又は静電転写のコピー
機等で簡単に製版可能な直描型平版印刷版材料を利用す
る印刷方式が急速に普及している。このような直描型印
刷版材料は、一般に耐水性支持体上に、無機顔料、水溶
性バインダー、耐水化剤等からなる印刷層を設けたもの
で、例えば特開昭６３−１６６５９１号公報等に公開さ
れている。2. Description of the Related Art With the recent progress in office work efficiency, in the light printing field, there is a printing method using a direct drawing type lithographic printing plate material capable of easily making a plate by a thermal transfer printer or an electrostatic transfer copying machine. It is spreading rapidly. Such a direct drawing type printing plate material is generally one in which a printing layer comprising an inorganic pigment, a water-soluble binder, a water-proofing agent and the like is provided on a water-resistant support, for example, JP-A-63-166591. It is published in.
【０００３】また、上記無機顔料として酸化亜鉛を用い
るものが提案されている。この場合、バインダーとして
は、溶剤溶解性のもの、並びに水溶性および水分散性の
もののいずれも使用可能である。水溶性または水分散性
のバインダーを用い、水を媒体とする塗工液を用いて印
刷層を形成する方法は、溶剤を媒体とする方法に比べて
安全かつ安価であり、従って望ましい塗工法である。し
かし、この場合の問題は、酸化亜鉛が水に対して親和性
が少ないことである。すなわち、このために、塗料の調
製および塗工工程において、常に顔料の沈殿を考慮して
作業しなければならない。Further, a method using zinc oxide as the inorganic pigment has been proposed. In this case, as the binder, both a solvent-soluble binder and a water-soluble or water-dispersible binder can be used. Using a water-soluble or water-dispersible binder, a method of forming a printing layer using a coating solution using water as a medium is safer and cheaper than a method using a solvent as a medium, and is therefore a desirable coating method. is there. However, the problem in this case is that zinc oxide has a low affinity for water. That is, for this reason, it is necessary to always consider the precipitation of the pigment in the process of preparing and applying the paint.
【０００４】また、塗工された塗工液が乾燥して印刷層
を形成する際において、顔料の媒体に対する親和性が低
い場合、顔料のみが集合する傾向があるために、均一な
印刷層が形成されず、凹凸のある、あるいは不連続な層
になってしまうという問題点を生ずる。この問題を解決
するために、種々の分散剤を用いることが提案された
が、いずれもその効果は十分ではなかった。Further, when the coating liquid is dried to form a printing layer, if the pigment has a low affinity for the medium, only the pigment tends to aggregate, so that a uniform printing layer is formed. There is a problem in that the layer is not formed and becomes uneven or discontinuous. In order to solve this problem, it has been proposed to use various dispersants, but none of them are sufficiently effective.
【０００５】[0005]
【発明が解決しようとする課題】本発明が解決しようと
する課題は、水を媒体として用い、かつ、酸化亜鉛を顔
料として含有する印刷層用塗工液を塗工して形成される
印刷層を有する直描型平版印刷版材料において、酸化亜
鉛が水に対して親和性が低いために生じる製造上の問題
点、すなわち塗料液調製および塗工工程において、顔料
の沈殿のために作業性が低下すること、及び塗工液の塗
工後の乾燥工程において印刷層の形成状態が不良である
という問題点を解決することである。The problem to be solved by the present invention is to provide a printing layer formed by applying a printing layer coating solution containing water as a medium and containing zinc oxide as a pigment. In the direct drawing type lithographic printing plate material having the following problem, zinc oxide has a low affinity for water, which is a manufacturing problem. It is to solve the problem that the formation state of the printing layer is poor in the drying step after applying the coating liquid.
【０００６】また、本発明が解決しようとする課題は、
印刷層に含まれる酸化亜鉛の親水性が低いことに起因し
て印刷の地汚れが発生するという、印刷層用顔料として
酸化亜鉛を含有する直描型平版印刷版材料における問題
点を解決することにもある。The problem to be solved by the present invention is as follows.
To solve the problem of a direct-drawing type lithographic printing plate material containing zinc oxide as a pigment for a printing layer, which causes scumming of printing due to the low hydrophilicity of zinc oxide contained in the printing layer. There is also
【０００７】[0007]
【課題を解決するための手段】本発明者らは、耐水性支
持体の少なくとも片面に、酸化亜鉛、及び水溶性又は水
分散型バインダー樹脂を主成分として含む印刷層を設け
て成る直描型平版印刷版材料の製造方法において、印刷
層用塗工液中の顔料の沈殿及び印刷層の形成状態が悪い
という問題点を解決すると共に、印刷層に地汚れが発生
しない品質の優れた印刷層を得るために鋭意研究した結
果、印刷層塗料中に、酸化亜鉛の重量に対して重量割合
で９９．８：０．２〜９７．０：３．０の量のタンニン
酸、すなわち、酸化亜鉛に対して０．２〜３重量％のタ
ンニン酸を含有させたものを耐水性支持体面に塗工して
印刷層を形成することによって、上記の問題が解決され
るということを発見して、本発明に到達したものであ
る。DISCLOSURE OF THE INVENTION The inventors of the present invention have a direct drawing type in which a printing layer containing zinc oxide and a water-soluble or water-dispersible binder resin as a main component is provided on at least one surface of a water resistant support. In the method for producing a lithographic printing plate material, while solving the problems of the precipitation of the pigment in the coating liquid for the printing layer and the poor formation of the printing layer, a printing layer of excellent quality that does not cause scumming in the printing layer As a result of earnest research to obtain the following, tannic acid in the amount of 99.8: 0.2 to 97.0: 3.0 in a weight ratio with respect to the weight of zinc oxide, that is, zinc oxide, It was found that the above problem can be solved by forming a printing layer by coating the surface of the water resistant support with 0.2 to 3% by weight of tannic acid. The present invention has been reached.
【０００８】すなわち、本発明に係わる直描型平版印刷
版材料は、耐水性支持体と、この耐水性支持体上に形成
され、かつ酸化亜鉛、及び水溶性又は水分散性のバイン
ダー樹脂を主成分として含む印刷層とを有し、前記印刷
層が、前記酸化亜鉛の重量に対して、重量割合で９９．
８：０．２〜９７．０：３．０の量のタンニンすなわ
ち、酸化亜鉛に対して０．２〜３重量％のタンニン酸を
含有することを特徴とするものである。That is, the direct-drawing type lithographic printing plate material according to the present invention mainly comprises a water-resistant support, zinc oxide, and a water-soluble or water-dispersible binder resin formed on the water-resistant support. A printing layer containing as a component, wherein the printing layer has a weight ratio of 99.
It is characterized by containing tannin in an amount of 8: 0.2 to 97.0: 3.0, that is, 0.2 to 3% by weight of tannic acid with respect to zinc oxide.
【０００９】また、本発明に係わる直描型平版印刷版材
料の製造方法は、耐水性支持体の少なくとも一面上に、
酸化亜鉛、及び水溶性又は水分散性のバインダー樹脂を
主成分として含み、かつ、前記酸化亜鉛の量に対して、
重量割合で９９．８：０．２〜９７．０：３．０の量の
タンニン酸、すなわち、酸化亜鉛に対して０．２〜３重
量％のタンニン酸を含有する印刷層用塗工液を塗工して
印刷層を形成することを特徴とするものである。Further, the method for producing a direct drawing type lithographic printing plate material according to the present invention comprises:
Zinc oxide, and containing a water-soluble or water-dispersible binder resin as a main component, and with respect to the amount of the zinc oxide,
A coating liquid for a printing layer containing tannic acid in an amount of 99.8: 0.2 to 97.0: 3.0 in weight ratio, that is, 0.2 to 3% by weight of tannic acid with respect to zinc oxide. Is applied to form a printing layer.
【００１０】本発明において、タンニン酸を印刷層用の
塗料中に添加するには、まず酸化亜鉛を、分散剤を添加
した、あるいは添加しない水の中に分散して置き、別に
溶解したタンニン酸の水溶液を攪はん中に添加するの
が、反応の均一性から言って最も良い。しかし、あらか
じめタンニン酸を溶解した水の中に酸化亜鉛を投入し
て、分散と同時に反応させる等の方法を取ることもでき
る。タンニン酸と反応した酸化亜鉛の分散液は、この後
サンドグラインダー、カウレスミキサー等の細分散装置
によってさらに細分散され、適当な分散度に調整された
後、バインダー樹脂等の添加物を加えられて印刷層用塗
料となる。In the present invention, in order to add tannic acid to the coating material for the printing layer, first, zinc oxide is dispersed in water with or without a dispersant, and tannic acid dissolved separately is added. It is best to add the above aqueous solution to the agitator in terms of the homogeneity of the reaction. However, it is also possible to adopt a method in which zinc oxide is put in water in which tannic acid is dissolved in advance and the reaction is carried out simultaneously with the dispersion. The dispersion liquid of zinc oxide reacted with tannic acid is then further finely dispersed by a fine dispersing device such as a sand grinder or a cowless mixer, and after being adjusted to an appropriate degree of dispersion, additives such as a binder resin are added. And becomes the paint for the printing layer.
【００１１】またバインダー樹脂は、細分散後に添加す
るのが、バインダーが水分散型である場合のバインダー
の安定性の上から望ましいが、そのためには改めて細分
散後の分散液を計量する必要がある。これを避けるため
に、安定な水分散型バインダー、あるいは水溶解性バイ
ンダーならば、細分散前の分散液に添加して、酸化亜鉛
とともに細分散装置を通すこともできる。It is desirable that the binder resin is added after fine dispersion in view of the stability of the binder when the binder is a water dispersion type, but for that purpose, it is necessary to measure the dispersion liquid after fine dispersion again. is there. To avoid this, a stable water-dispersible binder or a water-soluble binder may be added to the dispersion liquid before fine dispersion and passed through a fine dispersion device together with zinc oxide.
【００１２】塗料中にタンニン酸を添加することによ
り、塗料中の酸化亜鉛の沈殿は遅くなり、同時に塗料の
流動性が滑らかになって、塗工性が向上する。また乾燥
後の塗工層は凹凸や亀裂がなくなり、平滑な塗工層が得
られる。これはタンニン酸が酸化亜鉛と化学的に結合し
て、酸化亜鉛粒子の表面の性質を変え、親水性にするた
めと考えられる。タンニン酸添加のもうひとつの利点と
して、得られた平版印刷版の親水性が向上し、印刷の地
汚れが減少する。By adding tannic acid to the paint, the precipitation of zinc oxide in the paint is delayed, and at the same time, the fluidity of the paint is smoothed and the coatability is improved. Further, the coating layer after drying is free from irregularities and cracks, and a smooth coating layer can be obtained. It is considered that this is because tannic acid chemically bonds with zinc oxide to change the surface properties of the zinc oxide particles to make them hydrophilic. Another advantage of the addition of tannic acid is that the lithographic printing plate obtained is improved in hydrophilicity and the background stain of printing is reduced.
【００１３】タンニン酸の添加量は、酸化亜鉛に対して
重量割合で９９．８：０．２〜９７．０：３．０の範
囲、すなわち酸化亜鉛に対して０．２〜３重量％の範囲
である。０．２％より少ないと塗料の改質が明らかでな
く、３重量％より多いと塗料が凝集を起こす恐れがあ
る。The addition amount of tannic acid is in the range of 99.8: 0.2 to 97.0: 3.0 by weight ratio to zinc oxide, that is, 0.2 to 3% by weight to zinc oxide. It is a range. If it is less than 0.2%, the modification of the paint is not obvious, and if it is more than 3% by weight, the paint may agglomerate.
【００１４】本発明に使用されるバインダー樹脂は、水
溶性または水分散性のものである。水溶性のものとして
はカゼイン、でんぷん、ＰＶＡ等を、グリオキザール、
エポキシ化合物、アジリジン化合物等の硬化剤と併用し
て用いることができる。酸化亜鉛とバインダー樹脂の割
合は、重量で８８：１２〜８０：２０の範囲である。バ
インダーが１２重量％より少ないと耐刷性が不足し、２
０重量％より多いと印刷地汚れを起す恐れがある。The binder resin used in the present invention is water-soluble or water-dispersible. Examples of water-soluble substances include casein, starch, PVA, glyoxal,
It can be used in combination with a curing agent such as an epoxy compound or an aziridine compound. The weight ratio of zinc oxide to binder resin is in the range of 88:12 to 80:20. If the binder content is less than 12% by weight, printing durability will be insufficient and 2
If it is more than 0% by weight, the print background may be stained.
【００１５】本発明に使用される水分散性の樹脂は、い
わゆるエマルジョンあるいはコロイダルディスパージョ
ンと呼ばれるものであって、樹脂の種類としてはアクリ
ル樹脂、ウレタン樹脂、ＳＢＲ樹脂等が用いられる。ア
クリル樹脂の例としては東亜合成化学製のアロンＡ−１
０４および三井東圧化学製のボンロンＳ４８２を挙げる
ことができる。ウレタン樹脂の例としては東亜合成化学
製のネオタンＵＥ−１２００、同５４０４等を挙げるこ
とができる。The water-dispersible resin used in the present invention is a so-called emulsion or colloidal dispersion, and acrylic resin, urethane resin, SBR resin or the like is used as the type of resin. As an example of the acrylic resin, Aaron A-1 manufactured by Toagosei
04 and Bonron S482 manufactured by Mitsui Toatsu Chemicals. Examples of urethane resins include Neotan UE-1200 and 5404 manufactured by Toagosei Kagaku.
【００１６】本発明において酸化亜鉛は、印刷に先だっ
て親水化処理液の作用を受け、親水性となっていること
によってオフセット印刷を可能にする印刷層を与える。
酸化亜鉛の種類としては気相酸化法で製造されたもの、
および沈殿法で製造されたものをいずれも用いることが
できる。前者の例としては堺化学製のＳＡＺＥＸ２００
０、後者の例としては堺化学製のＺＩＮＣＡを挙げるこ
とができる。In the present invention, zinc oxide is subjected to the action of the hydrophilizing treatment liquid prior to printing, and since it becomes hydrophilic, it provides a printing layer which enables offset printing.
As the type of zinc oxide, those produced by the gas phase oxidation method,
Any of those produced by the precipitation method can be used. As an example of the former, SAZEX200 manufactured by Sakai Chemical Co., Ltd.
0, an example of the latter is ZINCA manufactured by Sakai Chemical Industry.
【００１７】印刷層は３〜２５ｇ／ｍ2 の厚さに塗工さ
れる。３ｇ／ｍ2 以下では親水性が保たれず、２５ｇ／
ｍ2 以上では印刷時に折れが生じる恐れがある。本発明
に用いられる基材としては、親水化処理およびオフセッ
ト印刷の際の水の影響に耐える耐水性が必要である。合
成樹脂フィルム、強サイズ紙の両面に両面に耐水層を設
けたもの、強サイズ紙とアルミ箔または合成樹脂フィル
ムの積層品等を用いることができる。The printing layer is applied to a thickness of 3 to 25 g / m 2 . Below 3 g / m 2 , hydrophilicity is not maintained,
If it is m 2 or more, there is a possibility that folds may occur during printing. The base material used in the present invention is required to have water resistance that can withstand the influence of water during hydrophilic treatment and offset printing. It is possible to use a synthetic resin film, a strong size paper having water resistant layers on both sides, a laminated product of strong size paper and aluminum foil, or a synthetic resin film.
【００１８】[0018]
【実施例】以下、実施例によって本発明を更に詳細に説
明するが、本発明の範囲はこれらの例によって限定され
るものではない。各実施例中、「部」は重量部を、また
「％」は重量％を示す。 実施例１ 湿潤強化および内面サイズを施した紙の片面に、下記の
配合の塗料１を、乾燥重量が１０ｇ／ｍ2 の厚さに塗工
して、印刷層側の耐水層とした。数字は乾燥重量を部で
表したものである（以下同様）。顔料の分散剤等の微量
成分は省略した。The present invention will be described in more detail with reference to the following examples, but the scope of the present invention is not limited by these examples. In each example, "part" means part by weight and "%" means% by weight. Example 1 A coating 1 having the following composition was applied to one side of a paper which had been subjected to wet strengthening and inner surface size, to a dry weight of 10 g / m 2 to obtain a water resistant layer on the printing layer side. Numbers represent dry weight in parts (same below). Trace components such as pigment dispersants are omitted.
【００１９】 塗料１ クレー ３０部 エマルジョン型アクリル樹脂 ６５部 （ボンロンＳ−４８２、三井東圧化学製） エポキシ樹脂 ５部 （デナコールＥＸ６１４Ｂ、ナガセ化成製）。 印刷層と反対側の耐水層として、下記の配合の塗料２を
１５ｇ／ｍ2 の厚さに塗工した。顔料の分散剤等は省略
した。 塗料２ クレー ５０部 コロイダルディスパージョン型アクリル樹脂 ５０部 （アロンＡ−１０４、東亜合成化学製）。Paint 1 Clay 30 parts Emulsion type acrylic resin 65 parts (Bonron S-482, manufactured by Mitsui Toatsu Chemicals) Epoxy resin 5 parts (Denacol EX614B, manufactured by Nagase Kasei). As a water resistant layer on the side opposite to the printed layer, a paint 2 having the following composition was applied to a thickness of 15 g / m 2 . The pigment dispersant and the like are omitted. Paint 2 Clay 50 parts Colloidal dispersion type acrylic resin 50 parts (Aron A-104, manufactured by Toagosei Kagaku).
【００２０】次に、印刷層塗工用の塗料を作成した。水
１０８部に、分散剤（三洋化成製、キャリボンＬ４０
０、濃度４０％）２部を溶解し、その中へ酸化亜鉛（堺
化学製、商品名ＺＩＮＣＡ）７０部を投入し、直ちにプ
ロペラ式攪はん機で攪はんして分散した。別に、タンニ
ン酸（ｍ−ガロイル没食子酸）０．７部を水２０部に溶
解した溶液を作成し、この溶液を、先に作成した酸化亜
鉛分散液の中へ、攪はんを続けながら添加した。添加終
了後５分間攪はんを続けて反応を完了させた後、分散液
をサンドグラインダーに通してさらに細かく分散した。
タンニン酸の添加量は、酸化亜鉛に対して１％であり、
完成した分散液の濃度は約３５％である。この分散液
に、ウレタン樹脂エマルジョン（東亜合成化学製、ネオ
タンＵＥ１２００、濃度３９％）３２部を加えて、プロ
ペラ式攪はん機で混和して、印刷層用塗料とした。Next, a coating material for coating the printing layer was prepared. In 108 parts of water, a dispersant (manufactured by Sanyo Kasei, Caribbon L40
0 part, a concentration of 40%) was dissolved, 70 parts of zinc oxide (manufactured by Sakai Chemical Co., Ltd., trade name ZINCA) was added, and immediately stirred and dispersed with a propeller-type stirrer. Separately, a solution in which 0.7 part of tannic acid (m-galloyl gallic acid) was dissolved in 20 parts of water was prepared, and this solution was added to the zinc oxide dispersion liquid prepared previously while continuing stirring. did. After completion of the addition, stirring was continued for 5 minutes to complete the reaction, and then the dispersion liquid was passed through a sand grinder to be further finely dispersed.
The amount of tannic acid added is 1% with respect to zinc oxide,
The concentration of the finished dispersion is about 35%. To this dispersion, 32 parts of a urethane resin emulsion (Neotan UE1200, manufactured by Toagosei Kagaku Co., concentration 39%) was added and mixed with a propeller stirrer to obtain a coating for a printing layer.
【００２１】先に作成した両面耐水塗工紙に、印刷層用
塗料を乾燥後１３ｇ／ｍ2 の厚さに塗工して、直描型平
版印刷版材料を作成した。塗工中に酸化亜鉛の沈殿によ
る問題はなく、塗工後の印刷層の表面を顕微鏡で観察し
たところ欠点はなく、ベック平滑度を測定したところ８
０秒であった。このようにして作成した平版印刷版材料
に、キャノン製熱転写プリンター、ＣＷ−４２５２を用
いて画像を作成し、アイテック製エッチ液を用いてエッ
チングを施した後、リョービ２７００印刷機を用いて印
刷したところ、地汚れがなく印刷でき、網点飛びが生じ
るまでの耐刷力は１２００枚であった。The double-sided water resistant coated paper prepared above was dried and then applied to a thickness of 13 g / m 2 to prepare a direct drawing type planographic printing plate material. There was no problem due to precipitation of zinc oxide during coating, there was no defect when the surface of the printed layer after coating was observed with a microscope, and Beck's smoothness was measured to be 8
It was 0 seconds. An image was created on the lithographic printing plate material thus created using a thermal transfer printer CW-4252 manufactured by Canon, and after etching was performed using an etchant manufactured by Aitec, printing was performed using a Ryobi 2700 printing machine. However, it was possible to print without background stains, and the printing durability before the occurrence of halftone dots was 1200 sheets.
【００２２】比較例１ 印刷層用塗料の作成においてタンニン酸を添加しなかっ
た他は実施例１と全く同様に操作して直描型平版印刷版
材料を作成した。印刷層の塗工中に、酸化亜鉛の沈殿の
ために塗料中に濃度の不均一が生じ、これが塗工層表面
のムラとなった。また印刷層表面を顕微鏡観察したとこ
ろ、こまかい亀裂が見られ、その中には耐水層が露出し
ていた。実施例１と同様にして印刷試験を行ったとこ
ろ、上記の亀裂にインキが入りこむために起こる地汚れ
があった。また印刷２００枚で印刷層が部分的に剥落
し、白抜けを生じた。Comparative Example 1 A direct drawing type lithographic printing plate material was prepared in the same manner as in Example 1 except that tannic acid was not added in the preparation of the printing layer coating material. During the coating of the printing layer, non-uniformity of the concentration occurred in the coating due to the precipitation of zinc oxide, which caused unevenness on the surface of the coating layer. When the surface of the printed layer was observed under a microscope, small cracks were found, and the water resistant layer was exposed in the cracks. When a printing test was conducted in the same manner as in Example 1, there was scumming caused by ink entering the cracks. Further, after printing 200 sheets, the printing layer was partially peeled off, and white spots were generated.
【００２３】[0023]
【発明の効果】本発明によって、地汚れの発生がなく、
耐刷性の良好な直描型平版印刷版材料が得られた。この
印刷版材料は事務自動化および軽印刷業の合理化に貢献
するところが大である。EFFECTS OF THE INVENTION According to the present invention, there is no generation of scumming.
A direct drawing type lithographic printing plate material having good printing durability was obtained. This printing plate material largely contributes to office automation and rationalization of the light printing industry.
Claims (2)
形成され、かつ酸化亜鉛、及び水溶性又は水分散性のバ
インダー樹脂を主成分として含む印刷層とを有し、前記
印刷層が、前記酸化亜鉛の量に対して、重量割合で９
９．８：０．２〜９７．０：３．０の範囲の量のタンニ
ン酸を含有することを特徴とする直描型平版印刷版材
料。1. A printing layer comprising a water-resistant support and a print layer formed on the water-resistant support and containing zinc oxide and a water-soluble or water-dispersible binder resin as a main component. However, the weight ratio is 9 with respect to the amount of zinc oxide.
A direct-drawing type lithographic printing plate material containing tannic acid in an amount in the range of 9.8: 0.2 to 97.0: 3.0.
性又は水分散性のバインダー樹脂を主成分として含み、
かつ、前記酸化亜鉛の量に対して、重量割合で９９．
８：０．２〜９７．０：３．０の範囲の量のタンニン酸
を含有する印刷層用塗工液を塗工して印刷層を形成する
ことを特徴とする直描型平版印刷版材料の製造方法。2. A water-resistant support containing zinc oxide and a water-soluble or water-dispersible binder resin as main components,
And, in a weight ratio with respect to the amount of the zinc oxide, 99.
Direct-drawing type lithographic printing plate characterized by forming a printing layer by applying a printing layer coating liquid containing an amount of tannic acid in the range of 8: 0.2 to 97.0: 3.0. Material manufacturing method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31107193A JPH07137471A (en) | 1993-11-18 | 1993-11-18 | Direct drawing type planographic printing plate material and production thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31107193A JPH07137471A (en) | 1993-11-18 | 1993-11-18 | Direct drawing type planographic printing plate material and production thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH07137471A true JPH07137471A (en) | 1995-05-30 |
Family
ID=18012769
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP31107193A Pending JPH07137471A (en) | 1993-11-18 | 1993-11-18 | Direct drawing type planographic printing plate material and production thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07137471A (en) |
-
1993
- 1993-11-18 JP JP31107193A patent/JPH07137471A/en active Pending
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