JP2960198B2 - Lithographic printing plate processing method - Google Patents
Lithographic printing plate processing methodInfo
- Publication number
- JP2960198B2 JP2960198B2 JP9957391A JP9957391A JP2960198B2 JP 2960198 B2 JP2960198 B2 JP 2960198B2 JP 9957391 A JP9957391 A JP 9957391A JP 9957391 A JP9957391 A JP 9957391A JP 2960198 B2 JP2960198 B2 JP 2960198B2
- Authority
- JP
- Japan
- Prior art keywords
- printing plate
- lithographic printing
- silver
- developer
- sodium thiosulfate
- 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 - Fee Related
Links
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- Photosensitive Polymer And Photoresist Processing (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、印刷性を改良した平版
印刷版の処理方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for processing a lithographic printing plate having improved printability.
【０００２】[0002]
【従来の技術】銀錯塩拡散転写法（ＤＴＲ法）を用いた
平版印刷版については、フォーカル・プレス、ロンドン
・ニューヨーク（１９７２年）発行、アンドレ・ロット及
びエディス・ワイデ著、「フォトグラフィック・シルバ
ー・ハライド・ディヒュージョン・プロセシズ」、第１
０１頁〜第１３０頁に幾つかの例が記載されている。2. Description of the Related Art A lithographic printing plate using a silver complex salt diffusion transfer method (DTR method) is disclosed in Focal Press, London New York (1972), by Andre Lott and Edith Weide, "Photographic Silver".・ Halide Diffusion Processes ”, No. 1
Several examples are described on pages 01-130.
【０００３】その中で述べられているように、ＤＴＲ法
を用いた平版印刷版には、転写材料と受像材料を別々に
したツーシートタイプ、あるいはそれらを一枚の支持体
上に設けたモノシートタイプの二方式が知られている。
ツーシートタイプの平版印刷版については、特開昭５７
ー１５８８４４号明細書に詳しく記載されている。又、
モノシートタイプについては、特公昭４８ー３０５６２
号、同５１ー１５７６５号、特開昭５１ー１１１１０３
号、同５２ー１５０１０５号などの各明細書に詳しく記
載されている。As described therein, a lithographic printing plate using the DTR method includes a two-sheet type in which a transfer material and an image receiving material are separated, or a monolithic type in which they are provided on a single support. Two types of sheet type are known.
A two-sheet type lithographic printing plate is disclosed in
No. 158844. or,
For the mono sheet type, see JP-B-48-30562.
No. 51-15765, JP-A-51-111103.
No., No. 52-150105, and the like.
【０００４】紙を支持体とした平版印刷版は、印刷中の
版伸びや水分のしみ込みなどのため耐刷性を含め高品質
の印刷は困難である。これらの問題点を改良し印刷性能
を向上する目的でフィルム支持体が用いられる。例え
ば、酢酸セルロースフィルム、ポリビニルアセタールフ
ィルム、ポリスチレンフィルム、ポリプロピレンフィル
ム、ポリエチレンテレフタレートフィルム、或はポリエ
ステル、ポリプロピレン、又はポリスチレンフィルムな
どをポリエチレンフィルムで被覆した複合フィルム等が
支持体として利用できる。[0004] A lithographic printing plate using paper as a support is difficult to print with high quality including printing durability due to plate elongation during printing and penetration of moisture. A film support is used for the purpose of improving these problems and improving printing performance. For example, a cellulose acetate film, a polyvinyl acetal film, a polystyrene film, a polypropylene film, a polyethylene terephthalate film, or a composite film obtained by coating a polyester, polypropylene, or polystyrene film with a polyethylene film can be used as the support.
【０００５】しかしながら、フィルムを支持体とした平
版印刷版は紙ベースの印刷版と比べ、版伸び性や水分の
しみ込みなどの点で改良されたものの、耐刷性、保水
性、更には印刷機への版掛け性等の点で問題を残してい
る。[0005] However, lithographic printing plates using a film as a support are improved in terms of plate elongation and moisture penetration, as compared with paper-based printing plates, but they have improved printing durability, water retention and printing. The problem remains in terms of the ability to hang the plate on the machine.
【０００６】そこで、上に述べた紙やフィルムを支持体
とした平版印刷版の種々の問題点を解決するために、金
属特にアルミニウムを支持体とした銀塩方式の平版印刷
版が知られており、特開昭５７ー１１８２４４号、同５
７ー１５８８４４号、同６３ー２６０４９１号などの各
明細書に詳しく記載されている。In order to solve the above-mentioned various problems of the lithographic printing plate using a paper or a film as a support, a lithographic printing plate of a silver salt type using a metal, particularly aluminum, as a support has been known. And JP-A-57-118244, 5
It is described in detail in each specification such as Nos. 7-158844 and 63-260491.
【０００７】特開昭６３ー２６０４９１号明細書では、
アルミニウムを支持体とし、その上に物理現像核層を設
け、更にその上に感光性ハロゲン化銀乳剤層を設けたモ
ノシートタイプの、ＤＴＲ法を利用した平版印刷版が詳
述されている。それによれば、上記平版印刷版を像露光
し、拡散転写現像した後、残留乳剤被膜を温水中で洗浄
して除去し印刷版を作製する。[0007] In the specification of JP-A-63-260491,
A monolithic lithographic printing plate utilizing the DTR method, in which aluminum is used as a support, a physical development nucleus layer is provided thereon, and a photosensitive silver halide emulsion layer is further provided thereon, is described in detail. According to this method, the lithographic printing plate is subjected to image exposure and diffusion transfer development, and then the residual emulsion film is removed by washing in warm water to produce a printing plate.
【０００８】[0008]
【発明が解決しようとする課題】本発明者等は、上記特
許に記載されたアルミニウムを支持体とするモノシート
タイプでＤＴＲ方式の平版印刷版において、その処理方
法を種々検討し次の問題点を見いだした。即ち、該平版
印刷版を、特開昭５７ー１５８８４４号や同６３ー２６
０４９１号明細書の実施例に記載されている様な現像液
を用いて現像を行なっても、インキ乗りが遅く、十分な
耐刷力が得られないという問題があることが分かった。SUMMARY OF THE INVENTION The present inventors have studied various processing methods for a mono-sheet type DTR type lithographic printing plate having an aluminum support as described in the above-mentioned patents, and studied the following problems. Was found. That is, the lithographic printing plate was prepared according to JP-A-57-158844 or 63-26
It has been found that even if development is performed using a developing solution as described in the examples of JP-A-0491, there is a problem that ink transfer is slow and sufficient printing durability cannot be obtained.
【０００９】本発明の目的は、上記問題を解決し、イン
キ乗り、耐刷力の改善された平版印刷版を提供すること
である。It is an object of the present invention to solve the above-mentioned problems and to provide a lithographic printing plate having improved ink printing and printing durability.
【００１０】[0010]
【課題を解決するための手段】本発明の上記目的は、支
持体として陽極酸化されたアルミニウムを用い、その上
に物理現像核層及び感光性ハロゲン化銀写真乳剤層を有
する平版印刷版において、１ｌ当たりのチオ硫酸ナトリ
ウムの含有量が2gを越えない処理液で現像することによ
って達成された。The object of the present invention is to provide a lithographic printing plate having anodized aluminum as a support and having thereon a physical development nucleus layer and a photosensitive silver halide photographic emulsion layer. This was achieved by developing with a processing solution containing no more than 2 g of sodium thiosulfate per liter.
【００１１】本発明の平版印刷版に用いられるアルミニ
ウム支持体は、その上に設けられる感光層との密着性を
向上し、且つ保水性を改善するため、その表面を粗面化
することが行われる。この粗面化処理（いわゆるグレイ
ニング）には、ボールグレイニング、ワイヤグレイニン
グ、ブラシグレイニング等の機械的粗面化処理、塩化
物、フッ化物等で化学的にアルミニウムを溶解すること
により行う化学的粗面化処理、及び電気化学的にアルミ
ニウムを溶解することにより行う電解粗面化処理があ
る。The aluminum support used in the lithographic printing plate of the present invention may be roughened in order to improve the adhesion to the photosensitive layer provided thereon and improve the water retention. Will be The surface roughening (so-called graining) is performed by mechanically roughening such as ball graining, wire graining, and brush graining, or by chemically dissolving aluminum with chloride, fluoride, or the like. There are a chemical surface roughening treatment and an electrolytic surface roughening treatment performed by electrochemically dissolving aluminum.
【００１２】粗面化処理を行なった後、陽極酸化処理を
行なう必要がある。陽極酸化処理は、従来よりよく知ら
れている方法を用いることが出来るが、硫酸が最も有用
な電解液として用いられる。それについで、リン酸、硝
酸なども有用な電解液である。さらに特開昭５５ー２８
４００号明細書に開示されている硫酸とリン酸の混合液
もまた有用である。After performing the surface roughening treatment, it is necessary to perform an anodic oxidation treatment. As the anodizing treatment, a conventionally well-known method can be used, but sulfuric acid is used as the most useful electrolytic solution. Subsequently, phosphoric acid, nitric acid and the like are also useful electrolytes. JP-A-55-28
Mixtures of sulfuric acid and phosphoric acid as disclosed in U.S. Pat. No. 400 are also useful.
【００１３】硫酸法は、通常直流電流で処理が行われる
が、交流を用いることも可能である。硫酸の濃度は５〜
３０％で使用され、２０〜６０℃の温度範囲で５〜２５
０秒間電解処理されて、表面に１〜１０ｇ／ｍ2の酸化
被膜が設けられる。さらにこのときの電流密度は１〜２
０Ａ／ｄｍ2が好ましい。リン酸法の場合には、５〜５
０％の濃度、３０〜６０℃の温度で、１０〜３００秒
間、１〜１５Ａ／ｄｍ2の電流密度で処理される。In the sulfuric acid method, the treatment is usually performed with a direct current, but an alternating current can also be used. The concentration of sulfuric acid is 5
Used at 30%, 5-25 in a temperature range of 20-60 ° C
Electrolytic treatment is performed for 0 second to provide an oxide film of 1 to 10 g / m 2 on the surface. Further, the current density at this time is 1-2.
0 A / dm 2 is preferred. 5-5 in case of phosphoric acid method
The treatment is carried out at a concentration of 0%, at a temperature of 30 to 60 ° C. and for a current density of 1 to 15 A / dm 2 for 10 to 300 seconds.
【００１４】尚、陽極酸化処理に先立ってデスマット処
理を施すことが好ましい。すなわち、粗面化処理したア
ルミニウム基板を、１０〜５０％の熱硫酸（４０〜６０
℃）や希薄なアルカリ（水酸化ナトリウム等）で処理す
ることにより表面に付着したスマットが除去される。It is preferable to perform a desmut treatment before the anodizing treatment. That is, the surface-roughened aluminum substrate is replaced with 10 to 50% hot sulfuric acid (40 to 60%).
C) or a dilute alkali (such as sodium hydroxide) removes smut adhered to the surface.
【００１５】また、陽極酸化処理を行なった後、必要に
応じて後処理を行うことが出来る。例えば、英国特許第
１，２３０，４４７号に開示されたポリビニルホスホン
酸の水溶液中に浸漬処理する方法が用いられる。また、
必要に応じて、親水性高分子の下塗層を設けることも可
能であるが、その上に設ける感光層の性質により取捨選
択される。After the anodic oxidation treatment, a post-treatment can be performed if necessary. For example, a method of dipping in an aqueous solution of polyvinylphosphonic acid disclosed in British Patent No. 1,230,447 is used. Also,
If necessary, an undercoat layer of a hydrophilic polymer can be provided, but it is selected depending on the properties of the photosensitive layer provided thereon.
【００１６】本発明で用いられる物理現像核層の物理現
像核として公知の銀錯塩拡散転写法に用いられるもので
よく、例えば金、銀等のコロイド、パラジウム、亜鉛等
の水溶性塩と硫化物を混合した金属硫化物などが使用で
きる。これらの詳細及び製法については、例えば、フォ
ーカル・プレス、ロンドン・ニューヨーク（１９７２
年）発行、アンドレ・ロット及びエディス・ワイデ著、
「フォトグラフィック・シルバー・ハライド・ディヒュ
ージョン・プロセシズ」を参照し得る。The physical development nuclei of the physical development nucleus layer used in the present invention may be those used in known silver complex salt diffusion transfer methods, for example, colloids such as gold and silver, water-soluble salts such as palladium and zinc, and sulfides. Can be used. For details and manufacturing methods thereof, see, for example, Focal Press, London New York (1972).
Published by Andre Lott and Edith Weide,
See "Photographic Silver Halide Diffusion Processes".
【００１７】本発明の印刷版の感光性ハロゲン化銀乳剤
層には保護コロイドとして各種親水性コロイドを用いる
ことができる。即ち、酸処理ゼラチン、アルカリ処理ゼ
ラチン、ゼラチン誘導体、グラフト化ゼラチン等各種ゼ
ラチンを用いることが出来る他、ポリビニルピロリド
ン、各種でんぷん、アルブミン、ポリビニルアルコー
ル、アラビアゴム、ヒドロキシエチルセルロース、等の
親水性高分子化合物を含有させることが出来る。用いら
れる親水性コロイドとしては、ゼラチン、ゼラチン誘導
体、ポリビニルアルコール、ポリビニルピロリドン等が
挙げられるが、好ましくは、物理現像後の親水性コロイ
ド層の剥離性を容易にするために実質的に硬膜剤を含ま
ない親水性コロイド層を用いることが望ましい。Various hydrophilic colloids can be used as protective colloids in the photosensitive silver halide emulsion layer of the printing plate of the present invention. That is, various gelatins such as acid-treated gelatin, alkali-treated gelatin, gelatin derivatives, and grafted gelatin can be used, and hydrophilic polymer compounds such as polyvinylpyrrolidone, various starches, albumin, polyvinyl alcohol, gum arabic, and hydroxyethyl cellulose. Can be contained. Examples of the hydrophilic colloid used include gelatin, a gelatin derivative, polyvinyl alcohol, and polyvinylpyrrolidone. Preferably, a substantially hardener is used to facilitate release of the hydrophilic colloid layer after physical development. It is desirable to use a hydrophilic colloid layer containing no.
【００１８】本発明に用いられる感光性ハロゲン化銀乳
剤の種類としては、一般に用いられる塩化銀、臭化銀、
ヨウ化銀、塩臭化銀、塩ヨウ臭化銀、ヨウ臭化銀等から
選択される。また乳剤のタイプとしてはネガ型、ポジ型
のいずれでもよく、また感光性ハロゲン化銀と難溶化し
た非感光性ハロゲン化銀を用いた特開昭54-48544号に記
載の特殊なタイプであってもよい。これらのハロゲン化
銀乳剤は必要に応じて化学増感あるいはスペクトル増感
することが出来る。The types of photosensitive silver halide emulsions used in the present invention include commonly used silver chloride, silver bromide,
It is selected from silver iodide, silver chlorobromide, silver chloroiodobromide, silver iodobromide and the like. The emulsion type may be either a negative type or a positive type, and is a special type described in JP-A-54-48544 which uses a photosensitive silver halide and a non-photosensitive silver halide which is hardly soluble. You may. These silver halide emulsions can be chemically or spectrally sensitized as necessary.
【００１９】本発明で用いられる現像液の現像主薬とし
ては、ポリヒドロキシベンゼン類（例えばハイドロキノ
ンのようなジヒドロキシベンゼン類）、３−ピラゾリジ
ノン類（例えばフェニドン類）が好ましい。As the developing agent of the developer used in the present invention, polyhydroxybenzenes (for example, hydroquino
Dihydroxybenzenes such as emissions), 3- pyrazolidinone (such phenidones) is not preferred.
【００２０】本発明で用いられる現像液には、アルカリ
性物質、例えば水酸化カリウム、水酸化ナトリウム、水
酸化リチウム、第３燐酸ナトリウム、あるいはアミン化
合物、保恒剤 、例えば亜硫酸ナトリウム、粘稠剤、例
えばカルボキシメチルセスロース、カブリ防止剤、例え
ば臭化カリウム、色調剤、例えば1-フェニル-5-メルカ
プトテトラゾール、現像変成剤、例えばポリオキシアル
キレン化合物等の添加剤等を含ませることが出来る。The developer used in the present invention includes an alkaline substance such as potassium hydroxide, sodium hydroxide, lithium hydroxide, sodium tertiary phosphate, or an amine compound, a preservative such as sodium sulfite, a thickener, For example, carboxymethyl cellulose, an antifoggant such as potassium bromide, a color tone such as 1-phenyl-5-mercaptotetrazole, a development modifier, an additive such as a polyoxyalkylene compound, and the like can be contained.
【００２１】現像液のｐＨは１２〜１４であるが、その
範囲において、使用する平版印刷版のアルミニウム支持
体の前処理（例えば陽極酸化）条件、写真要素、所望の
像、現像液中の各種化合物の種類及び量、現像条件等に
よって変化できる。[0021] The pH of the developer is 12 to 14, the
In the range, the pre-processing (e.g. anodic oxidation) conditions of the lithographic printing plate aluminum support used, the photographic element, desired image, the type and amount of various compounds in the developer can be changed by development conditions.
【００２２】ゼラチン層を除去するためのウォッシュオ
フは、温度20〜30℃程度の流水で洗い流す事によって行
なうことが出来る。Wash-off for removing the gelatin layer can be carried out by rinsing with running water at a temperature of about 20 to 30 ° C.
【００２３】[0023]
【００２４】実施例１ 厚さ0.30mmのアルミニウム板を、４％の水酸化ナトリウ
ム水溶液で脱脂処理した後、約１％の塩酸溶液中で10V
の交流を約２０分間流した後、直ちに２０重量％の硫酸
で1A/dm2の電流密度で５分間陽極酸化を行ない、さらに
水洗乾燥し、表面の陽極酸化されたアルミニウム板を調
整した。この支持体上に下記の物理現像核液を銀重量で
10 mg/m2の塗布量となるように塗布した。物理現像核は
カレー・レー（Carey Lea）法により作成された銀ゾル
にゼラチン溶液を加えて、銀とゼラチンの重量比が１と
なるように調整した。塗布量は50mg/m2。Example 1 An aluminum plate having a thickness of 0.30 mm was degreased with a 4% aqueous sodium hydroxide solution.
Was immediately applied for about 20 minutes, immediately anodized with 20% by weight of sulfuric acid at a current density of 1 A / dm 2 for 5 minutes, washed with water and dried to prepare an anodized aluminum plate on the surface. On this support, the following physical development nucleus solution was added in terms of silver weight.
It was applied so that the application amount was 10 mg / m 2 . The physical development nuclei were adjusted so that the weight ratio of silver to gelatin was 1 by adding a gelatin solution to a silver sol prepared by the Curey Lea method. The application amount is 50 mg / m 2 .
【００２５】さらに乾燥後下記の構成の感光性ハロゲン
化銀乳剤層を塗布乾燥し感光性平版印刷版を作成した。
オルソ増感された塩化銀乳剤（ヨウ化銀を１モル％含
む。平均粒子サイズ0.3μ)で、硝酸銀で表したハロゲン
化銀被覆量2g/m2、ゼラチン塗布量0.4g/m2。After drying, a photosensitive silver halide emulsion layer having the following composition was applied and dried to prepare a photosensitive lithographic printing plate.
An ortho-sensitized silver chloride emulsion (containing 1 mol% of silver iodide, average grain size 0.3 μm), a silver halide coating amount represented by silver nitrate of 2 g / m 2 , and a gelatin coating amount of 0.4 g / m 2 .
【００２６】このようにして得られた平版印刷板を、ネ
ガフィルムから密着露光計を用いて像露光を行った後、
表１に示すような本発明のチオ硫酸ナトリウムを実質的
に含まない現像液及び、比較現像液としてチオ硫酸ナト
リウムを含む現像液で20℃10秒間現像を行なった後、直
ちに流水で30秒間水洗してゼラチン層を洗い流し(ウォ
ッシュオフ)した。この様にして得られた感光性印刷版
の画像部の濃度を反射濃度計を用いて測定した。The lithographic printing plate thus obtained is subjected to image exposure from a negative film using a contact exposure meter.
After developing at 20 ° C. for 10 seconds with a developer substantially free of sodium thiosulfate of the present invention as shown in Table 1 and a developer containing sodium thiosulfate as a comparative developer, immediately wash with running water for 30 seconds. The gelatin layer was washed off (washed off). The density of the image portion of the photosensitive printing plate thus obtained was measured using a reflection densitometer.
【００２７】[0027]
【表１】 [Table 1]
【００２８】表１から分かるように、本発明の１ｌ当た
りのチオ硫酸ナトリウムの含有量が2gを越えない現像液
を用いて得られた画像銀の濃度は、チオ硫酸ナトリウム
を添加することにより著しい低下を示し、１ｌ当たりの
チオ硫酸ナトリウムの含有量が2gを越えると転写銀量が
著しく低下し、チオ硫酸ナトリウムの現像液中での添加
量が8g/lでは、ほとんど転写銀画像を得ることが出来な
いことが分かる。As can be seen from Table 1, the concentration of image silver obtained using a developing solution of the present invention in which the content of sodium thiosulfate per liter does not exceed 2 g is remarkable by adding sodium thiosulfate. When the content of sodium thiosulfate per liter exceeds 2 g, the amount of transferred silver is remarkably reduced. When the amount of sodium thiosulfate added in the developer is 8 g / l, almost transferred silver images are obtained. You can see that you can not do.
【００２９】実施例２ 実施例１の方法で現像した本発明の平版印刷版をウォッ
シュオフ処理した後、版面が乾かないうちに下記の表２
の版面保護液を脱脂綿等で塗布し乾燥させる。この様に
して作成した平版印刷板を、印刷機エー・ビー・ディッ
ク350CD(A.B.Dick社製オフセット印刷機の商標）にか
け、インキ受理性及び耐刷力を次の方法で評価した結果
を表３に示す。Example 2 After the lithographic printing plate of the present invention developed by the method of Example 1 was washed off, the plate surface was not dried before the lithographic printing plate was dried.
Is applied with absorbent cotton or the like and dried. The lithographic printing plate prepared in this manner was applied to a printing machine AB Dick 350CD (trademark of an offset printing machine manufactured by ABDick), and the ink acceptability and printing durability were evaluated by the following methods. Show.
【００３０】[0030]
【表２】 [Table 2]
【００３１】[0031]
【表３】 [Table 3]
【００３２】インキ受理性は版面にインキローラを接触
させながら同時に紙送りを始め、良好な画像濃度の印刷
物が得られるまでの印刷枚数で評価した。耐刷力は画像
部のインキ乗りの不良、あるいは線飛びが生じる時のい
ずれかにより印刷が不可能となったときの印刷枚数で評
価した。The ink receptivity was evaluated based on the number of printed sheets until a printed material having a good image density was obtained by simultaneously starting paper feeding while bringing the ink roller into contact with the plate surface. The printing durability was evaluated based on the number of printed sheets when printing became impossible due to either poor ink application in the image area or line skipping.
【００３３】表３の結果から分かるように、本発明の１
ｌ当たりのチオ硫酸ナトリウムの含有量が2gを越えない
現像液で処理された平版印刷版はインキ乗りは良好でか
つ極めて高い耐刷性能を有しているのに対し、１ｌ当た
りのチオ硫酸ナトリウムの含有量が2gを越えない現像液
で処理した平版印刷版はインキ乗りが著しく低下し、ま
た耐刷力もチオ硫酸ナトリウムの添加量が増えるにした
がって著しく低下していることが分かる。As can be seen from the results in Table 3, one of the present inventions
A lithographic printing plate treated with a developing solution having a sodium thiosulfate content of not more than 2 g per liter has a good ink run and extremely high printing durability, whereas a lithographic printing plate has a very high printing durability. It can be seen that the lithographic printing plate treated with a developer having a content of no more than 2 g has significantly reduced ink driving and also has a markedly reduced printing durability as the amount of sodium thiosulfate added increases.
【００３４】[0034]
【発明の効果】インキ乗りが良好でかつ極めて高い耐刷
性能を有する平版印刷版を得る事ができる。According to the present invention, it is possible to obtain a lithographic printing plate having good ink running and extremely high printing durability.
フロントページの続き (56)参考文献 特開 昭59−126537（ＪＰ，Ａ) 特開 昭59−126536（ＪＰ，Ａ) 特開 昭57−44153（ＪＰ，Ａ) 特開 昭60−41044（ＪＰ，Ａ) 特開 昭51−139401（ＪＰ，Ａ) 特開 昭60−78453（ＪＰ，Ａ) 特開 昭60−260957（ＪＰ，Ａ) (58)調査した分野(Int.Cl.6，ＤＢ名) G03F 7/07,7/32 Continuation of front page (56) References JP-A-59-126537 (JP, A) JP-A-59-126536 (JP, A) JP-A-57-44153 (JP, A) JP-A-60-41044 (JP, A) JP-A-51-139401 (JP, A) JP-A-60-78453 (JP, A) JP-A-60-260957 (JP, A) (58) Fields investigated (Int. Cl. 6 , DB Name) G03F 7 / 07,7 / 32
Claims (1)
ムを用い、その上に順に物理現像核層及び感光性ハロゲ
ン化銀写真乳剤層を有する平版印刷版を画像露光後、ジ
ヒドロキシベンゼン現像主薬を含有するｐＨ１２以上の
現像液で現像処理し、続いて該物理現像核層より上の層
を除去する処理を行う製版処理方法において、該現像液
がチオ硫酸ナトリウムを含まないか、または１リットル
当たり１ｇまでのチオ硫酸ナトリウムを含むことを特徴
とする銀錯塩拡散転写方式を用いる平版印刷版の処理方
法。1. A lithographic printing plate having anodically oxidized aluminum as a support and a physical development nucleus layer and a photosensitive silver halide photographic emulsion layer formed thereon in this order is image-exposed and contains a dihydroxybenzene developing agent. A plate-making method comprising developing with a developer having a pH of 12 or more and subsequently removing a layer above the physical development nucleus layer, wherein the developer does not contain sodium thiosulfate or 1 liter. > A method for treating a lithographic printing plate using a silver complex salt diffusion transfer system, wherein the lithographic printing plate contains up to 1 g of sodium thiosulfate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9957391A JP2960198B2 (en) | 1991-04-03 | 1991-04-03 | Lithographic printing plate processing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9957391A JP2960198B2 (en) | 1991-04-03 | 1991-04-03 | Lithographic printing plate processing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04306660A JPH04306660A (en) | 1992-10-29 |
| JP2960198B2 true JP2960198B2 (en) | 1999-10-06 |
Family
ID=14250857
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9957391A Expired - Fee Related JP2960198B2 (en) | 1991-04-03 | 1991-04-03 | Lithographic printing plate processing method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2960198B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06289618A (en) * | 1993-04-06 | 1994-10-18 | Fuji Photo Film Co Ltd | Production of planographic printing plate |
| EP0772086B1 (en) * | 1995-11-02 | 1999-10-06 | Agfa-Gevaert N.V. | Imaging element for making an improved printing plate according to the silver salt diffusion transfer process |
-
1991
- 1991-04-03 JP JP9957391A patent/JP2960198B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04306660A (en) | 1992-10-29 |
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