JPS62238562A - Developing process method for photosensitive lithographic printing plate by which stability of developing process is improved - Google Patents

Developing process method for photosensitive lithographic printing plate by which stability of developing process is improved

Info

Publication number
JPS62238562A
JPS62238562A JP8289886A JP8289886A JPS62238562A JP S62238562 A JPS62238562 A JP S62238562A JP 8289886 A JP8289886 A JP 8289886A JP 8289886 A JP8289886 A JP 8289886A JP S62238562 A JPS62238562 A JP S62238562A
Authority
JP
Japan
Prior art keywords
plate
developer
developing
heating
development
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.)
Granted
Application number
JP8289886A
Other languages
Japanese (ja)
Other versions
JPH0577068B2 (en
Inventor
Minoru Kiyono
清野 実
Masabumi Uehara
正文 上原
Mieji Nakano
中野 巳恵治
Akira Nogami
野上 彰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Konica Minolta Inc
Original Assignee
Konica Minolta Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Konica Minolta Inc filed Critical Konica Minolta Inc
Priority to JP8289886A priority Critical patent/JPS62238562A/en
Publication of JPS62238562A publication Critical patent/JPS62238562A/en
Publication of JPH0577068B2 publication Critical patent/JPH0577068B2/ja
Granted legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03FPHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
    • G03F7/00Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
    • G03F7/26Processing photosensitive materials; Apparatus therefor
    • G03F7/30Imagewise removal using liquid means

Abstract

PURPOSE:To enable always stable developing process of many sheets of PS plates by heating a photosensitive lithographic printing plate in the mid-way of or prior to development. CONSTITUTION:The photosensitive lithographic printing plate is heated in the mid-way of or prior to the development in a method for subjecting the photosensitive lithographic printing plate to image exposing then to the developing process by using an automatic developing machine. A method for bringing the PS plate into contact with a heating medium during conveyance can be used as the means for heating the PS plate. The heating of the PS plate is preferably so executed that the PS plate is maintained at the temp. (preferably in the + or -1 deg.C range of the developing temp.) as near as possible the temp. of the developing soln. to be processed on the surface of the PS plate, i.e., intended developing temp. The temp. of the heated PS plate is preferably normally in 30-80 deg. range. The uniformity of the development result in the case of making the developing process of many sheets of the PS plates by using the automatic developing machine is thereby improved.

Description

【発明の詳細な説明】[Detailed description of the invention]

〔産業上の利用分野〕 本発明は感光性平版印刷版(以下、PS版という)の現
像処理方法に関し、更に詳しくは、自動現像機を用いて
現像処理するPS版の処理方法に関するものである。 〔従来の技術および発明の背景〕 露光済みのPS版を多数枚処理する場合には、自動現像
機を用いることが一般に行なわれている。 自動現像機において露光済みのPS版を処理するに版面
上に供給して現像処理する方法や、多量の現像液を収容
した現像処理槽にPS版を湾曲させて搬送しながら浸漬
させて現像処理する方法が行われている。こうした処理
機においては、いづれもPS版を1版処理するのに、多
量の現像液を準備する必要があった。また、現像液を経
済的に利用する為に蹟環再使用しており、その間、処理
による現像液劣化に加えて空気中からの炭酸ガスの吸収
による現像液劣化が起こり、しばしば、劣化した現像液
を交換しなければならず、現像作業の管理が非常に面倒
であった。 また、」二足の欠点を改善する目的でPS版を多量の循
環再使用する現像液で処理する場合、?+Ii充液を補
充して現像処理を安定に保つ方法が知られており、特開
昭50−144502号、同55−115039号、同
58−95349号各公報等に開示されている。しかし
、こうした補充方法においても液交換の頻度は紘少する
ものの液交換の必要があり、また、補充の精度の問題と
PS版間の品種差による補充のふれは解決で涛 1」゛
 ノ1%  −q  ?−オ ナー    Q  o)
  l−r=  3.++ ソ、:s、HHyy  ノ
ー i/  d暖L−1補充装置自体が高価であるばか
りか、補充装置の調整、整備等の必要もあった。 また、こうした補充方式の煩わしさを除き、現像液の節
約を目的とした処理装置が、特開昭55−32044号
公報に記載されている。これは、自動現像機内の感光材
料移送路に接近して28版面上に施した現像液を延伸す
る現像液拡散板を備えた写真現像処理装置であるが、こ
の装置を用いて感光性平版印刷版を処理する方法におい
ては、現像が均一にできない場合があることや、多数枚
のPS版を処理した場合、一定の性能のものが得られな
い場合があること等の問題がある。 我々はこの問題について研究の結果、現像途中または現
像直航にPS版を加熱した場合にこの欠点が改良される
ことを見出し、本発明に到達した。 〔発明の目的〕 本発明の目的は、多数枚のPS版を常に安定して現像処
理できる現像処理方法を提供することである。 〔発明の構成〕 本発明の目的は、感光性平版印刷版を画像露光後、自動
現像機を用いて現像処理する方法において、現像途中ま
たは現像直前に感光性平版印刷版を加熱することを特徴
とする感光性平版印刷版の現像処理方法によって達成さ
れる。 以下、本発明について詳述する。 本発明に用いられる自動現像機の現像形態には版面上に
多量の現像液を循環供給する方法や処理されるPS版1
枚毎に必要用の実質的に未使用の現像液を28服面上に
供給する方法があるが、特に後者の場合に本発明の効果
が大きい。 」二足の処理されるPS版1枚毎に現像液を28版面上
に供給する方法において、PS版−ヒに現像液を供給す
る方法としては、例えばシャワーパイプやノズルを使っ
て液を版面に噴射、噴霧又は滴下する方法、或いは版面
に接触または非接触の位置に置いた現像液供給部材から
現像液を版面に塗布するような形で供給する方法等があ
る。現像液供給部材とPS版を接触させ現像液をPS版
上に供給する方法には、例えばスポンジあるいは布など
のような吸水性の部材でPS版を擦ることにより供給す
る方法あるいはゴムなどのような非吸水性の部材、前記
スポンジあるいは布などのような吸水性の部材にかかわ
らず、これらの部材をローラ状にし、搬送される感光性
平版印刷版とローラの回転を同調させながら供給する方
法、などが挙げられる。 また現像液供給部材とPS版を非接触で現像液をPS版
上に供給する方法には例えば細い間隙に現像液をためて
おきその中を印刷版を通過させることにより供給する方
法、あるいは現像液供給部材に表面張力により雫状に昨
れ下がる現像液にPS版を接触させ供給する方法、ある
いは筒状の物に現像液を貯めておき、該筒状の物の側面
に細い間隙を作り、その間隙にl)S版を通過させるこ
とにより、供給する方法などが挙げられる。 また、これらの現像液供給方法において、現像液は液状
のみならず泡状としてPS版上に供給することができる
。さらに現像を噴射方式により供給する方法では、現像
液を霧状で供給することもでAる− その他の現像液供給方法としてはフィルムベースなどに
現像液を付着させそれをPS版上にラミネートすること
により供給する方法や、ワックス状の現像液を印刷版と
接触させて供給する方法などが挙げられる。 また前記現像液の供給方法は、1つの方法のみを用いて
も良いし、2つ以上の方法を組み合わせてもよい。本発
明は、28版面上に供給される現像液供給Fil 7!
I(PSS版11を当り1000JIQ以下、特に50
0j112以下である場合に効果が特に顕著である。P
SS小単位面積当の現像液供給!1には非画像:l<の
面積比率、PS版の種類等に応じて調節することが望ま
しい。 PS版面−Fに供給する現像液の温度は10℃ないし6
0℃の範囲が適当であり、20℃ないし45℃の範囲が
好ましい。 現像液は使用液に仕上げられたものを貯蔵槽に貯えてお
き処理時にPS版上に供給してもよく、また原液と稀釈
液、又は組成を異する複数の液に分けて貯蔵槽に貯え、
6液を版面」二に供給し、或いは供給時自動的に混合し
て使用液に仕上げて供給してもよいが、自動的に混合し
均一状態として版面に供給する方が好ましい。 版面に供給される現像液は全量未使用の新液であっても
よく、また一部一度使用した液を混合して使用してもよ
い。使用する現像液の一部に一度使用した現像液を使用
する方法には、例えば現像液供給ノズルが複数ある場合
、ある特定のノズルからは未使用の現像液を供給し、残
りの特定のノズルからは一度使用した現像液を供給する
方法などが挙げられるが28版上に供給する現像液すべ
てに、未使用の現像液を使用する方法が好ましい。 また、現像液供給部は、PS版の有無を検出するセンサ
ー等の検出機構に運動した制御機構を有していて、PS
版が現像部に搬入される前及び通過後は停止機構がのく
ようになっていることが望ましい。本発明の方法におい
ては現像処理時に現像を促進する何らかの操作を付加す
ることが好ましい。 現像促進操作には、現像促進する物理的、化学的、電気
的、機械的などのすべての手段を利用することができる
。 現像促進操作を付加する時期は、現像液を供給する前あ
るいは供給中あるいは供給後のいずれの時期でもよいが
現像液の供給中あるいは供給後に付加することが好まし
い。 また、前記の現像液供給手段と現像促進手段とは一体化
されていてもよい。 本発明において現像ゾーンをPS版が通過する時間は1
5秒〜60秒であることが好ましい。 本発明の方法の実施に用いられる自動現像機はPS版を
自動的に搬送処理するもので、現像液の適量を供給する
手段および現像途中または現像直前にPS版を加熱する
手段を備えたものであれば、その形状、構成、構造等は
特に限定されないが、搬送形式は例えば搬送ローラやエ
ンドレスベルト等を用いた水平搬送型のものが好ましい
。 本発明において、I)S版を加熱する手段としては、P
S版を搬送中に加熱媒体と接触させる方法を用いること
ができる。この加熱媒体は固体、液体、気体の何れでも
よい。 固体の加熱媒体としては例えばニクロム線等の発熱印材
、温水等の熱媒体等によって加熱されたアルミニウム等
の熱伝導率の高い金属等を媒体とするものが挙げられる
。 固体媒体の形状は板状またはローラ状が好ましく、板状
の場合には搬送される28版の裏面と接するように設け
るのが良く、ローラ状の場合は例えば2つのローラから
なるローラ対の少なくとも1つを加熱したローラ対にニ
ップして加熱する態様が好ましく、この場合、裏面に接
するローラが加熱されていることが好ましい。 液体の加熱媒体としては例えば温水等がある。 この場合の具体的方法としては28版の搬送中にその表
面および/または裏面に温水等をノズル等から吹付ける
方法が挙げられる。 気体の加熱媒体としては例えば加熱された空気等がある
。この場合の具体的方法としては28版の搬送中にその
表面および/または裏面に加熱された空気をノズル等か
ら吹付ける方法、加熱された空気で満たされた室を設け
ておきその中を通ず方法等がある。 本発明において、l)S版を加熱するのは現像途中およ
び/または現像直前であって、ここで現像途中とはPS
版が現像液と接触している工程の間であり、例えば現像
液が版面上に供給されてからスキージローラ等でスクイ
ズされるまでの間を言う。現象面+iifとは、PS版
を搬送して現像処理を行なう現像方法において、PS版
が現像液と接触する以1″I71の搬送経路上にある間
のことである。 本発明におけるPS版の加熱は、加熱された28版の温
度が28版面上に施される現像液の温度即ち意図する現
像温度になるべく近い温度(好まし−くは現像温度u℃
の範囲内)に保たれるように加熱することが好ましい。 また、加熱された28版の温度は通常30〜80℃の範
囲にあることが好ましい。 このような加熱結果を得るための加熱条件は加熱部材の
種類および加熱条件、加熱前のPS版の温度、現像ゾー
ンの雰囲気の温度等によって異なるが、加熱条件とその
結果との関係を予め実験等で求めておいて加熱条件を定
めることができ、加熱結果をセンサーで検知して加熱条
件へフィードバッりする等の手段を用いることができる
。 本発明の実施において、l)8版が現像処理される雰囲
気の温度を検知するセンサーを設けておき、検知された
温度に応じて加熱条件を調節する機構を自動現像機に設
けることが好ましい。 本発明の方法が適用されるPS版は感光性組成物が支持
体」二に塗布されているもの、または電子写真方式等に
よって画像様レジスト届を設は得る溶解性層が支持体上
に設けられているものである。 PS版に使用される支持体としては、紙、プラスチック
(例えばポリエチレン、ポリプロピレン、ポリスチレン
など)ラミネート紙、アルミニウム(アルミニウム合金
も含む)、亜鉛、銅などのような金属の板、ニー酢酸セ
ルロース、三酢酸セルロース、ブ
[Industrial Application Field] The present invention relates to a method for developing a photosensitive lithographic printing plate (hereinafter referred to as a "PS plate"), and more specifically, to a method for processing a PS plate that is developed using an automatic developing machine. . [Prior Art and Background of the Invention] When processing a large number of exposed PS plates, it is common practice to use an automatic processor. There are methods for processing an exposed PS plate in an automatic developing machine, such as supplying it onto the plate surface and developing it, and developing the PS plate by immersing it in a developing tank containing a large amount of developer while bending it and conveying it. The method is being used. In all of these processing machines, it is necessary to prepare a large amount of developer to process one PS plate. In addition, in order to use the developer economically, the developer is reused, and during this process, in addition to deterioration of the developer due to processing, the developer also deteriorates due to the absorption of carbon dioxide gas from the air, which often results in the deterioration of the developer. The solution had to be replaced, making it extremely troublesome to manage the developing process. In addition, if the PS plate is processed with a large amount of circulating and reused developer in order to improve the shortcomings of the two pairs, what should I do? A method of replenishing the +Ii solution to keep the development process stable is known, and is disclosed in Japanese Patent Application Laid-open Nos. 50-144502, 55-115039, and 58-95349. However, even with this replenishment method, although the frequency of liquid exchange is reduced, it is necessary to replace the liquid, and the problem of replenishment accuracy and replenishment fluctuation due to product differences between PS plates cannot be solved. % −q? -Owner Qo)
l-r=3. ++ So, :s, HHyy No i/d Not only was the warm L-1 replenishment device itself expensive, but the replenishment device also required adjustment and maintenance. Further, a processing apparatus for eliminating the troublesome replenishment method and saving developer is described in Japanese Patent Laid-Open No. 55-32044. This is a photographic processing device that is equipped with a developer diffusion plate that is close to the photosensitive material transfer path in an automatic processor and that spreads the developer applied onto the 28 plate surfaces. There are problems with the method of processing plates, such as that uniform development may not be possible in some cases, and that constant performance may not be obtained when a large number of PS plates are processed. As a result of our research on this problem, we have found that this drawback can be improved if the PS plate is heated during or immediately after development, and we have arrived at the present invention. [Object of the Invention] An object of the present invention is to provide a developing method that can always stably develop a large number of PS plates. [Structure of the Invention] The object of the present invention is to provide a method for developing a photosensitive lithographic printing plate using an automatic processor after image exposure, which is characterized in that the photosensitive lithographic printing plate is heated during or immediately before development. This is achieved by a method for developing a photosensitive lithographic printing plate. The present invention will be explained in detail below. The development mode of the automatic developing machine used in the present invention includes a method of circulating a large amount of developer onto the plate surface, and a method of circulating a large amount of developer onto the plate surface, and
Although there is a method of supplying the required amount of substantially unused developer solution onto 28 sheets for each sheet, the effect of the present invention is particularly great in the latter case. In the method of supplying the developer onto the 28 plates for each PS plate to be processed, for example, a shower pipe or nozzle is used to supply the developer to the plate surface. There are methods of spraying, spraying, or dropping the developer, and methods of supplying the developer in a manner such that it is coated on the plate surface from a developer supplying member placed in a position that is in contact with or not in contact with the plate surface. The method of bringing the developer supply member into contact with the PS plate and supplying the developer onto the PS plate includes, for example, a method of supplying the developer by rubbing the PS plate with a water-absorbing member such as a sponge or cloth, or a method of supplying the developer by rubbing the PS plate with a water-absorbing member such as a sponge or cloth, or a method using a material such as rubber. Regardless of whether it is a non-water-absorbing member or a water-absorbing member such as the above-mentioned sponge or cloth, this method involves forming these members into a roller shape and supplying the material while synchronizing the rotation of the roller with the photosensitive lithographic printing plate being transported. , etc. In addition, methods for supplying the developer onto the PS plate without contact between the developer supply member and the PS plate include, for example, a method in which the developer is stored in a narrow gap and supplied by passing the printing plate through the gap; There is a method of supplying the PS plate by bringing it into contact with the developer that falls down like drops due to surface tension on the liquid supply member, or by storing the developer in a cylindrical object and creating a narrow gap on the side of the cylindrical object. , a method of supplying by passing l) S plate through the gap, and the like. Furthermore, in these developer supply methods, the developer can be supplied onto the PS plate not only in liquid form but also in foam form. Furthermore, in the method of supplying the developer by spraying, it is also possible to supply the developer in the form of a mist.Another method of supplying the developer is to attach the developer to a film base or the like and laminate it on the PS plate. Examples include a method in which a wax-like developer is supplied by contacting the printing plate with a wax-like developer. Further, as the method for supplying the developer, only one method may be used, or two or more methods may be combined. In the present invention, the developer supply Fil 7! is supplied onto the 28 printing plates.
I (PSS version 11 per 1000 JIQ or less, especially 50
The effect is particularly remarkable when it is 0j112 or less. P
SS developer supply per small unit area! It is desirable to adjust 1 according to the area ratio of non-image:l<, the type of PS plate, etc. The temperature of the developer supplied to the PS plate-F is between 10°C and 6°C.
A range of 0°C is suitable, and a range of 20°C to 45°C is preferred. The developer may be finished into a working solution and stored in a storage tank and supplied onto the PS plate during processing, or it may be divided into a stock solution and a diluted solution, or multiple solutions with different compositions and stored in a storage tank. ,
The 6 liquids may be supplied to the printing plate, or they may be automatically mixed at the time of supply to prepare the liquid for use, but it is preferable to mix them automatically and supply the liquid in a uniform state to the printing plate. The developing solution supplied to the printing plate may be entirely new and unused, or may be a mixture of partially used solutions. For example, when there are multiple developer supply nozzles, unused developer is supplied from one specific nozzle, and the remaining developer is supplied with a previously used developer. Although there is a method of supplying a developer that has been used once, it is preferable to use an unused developer for all the developer that is supplied onto the 28 plates. Further, the developer supply section has a control mechanism that operates on a detection mechanism such as a sensor that detects the presence or absence of a PS plate.
It is desirable that the stop mechanism be closed before the plate is carried into the developing section and after it passes through. In the method of the present invention, it is preferable to add some kind of operation to accelerate the development during the development process. For the development promotion operation, all physical, chemical, electrical, mechanical, etc. means for promoting development can be used. The development accelerating operation may be added before, during or after the developer is supplied, but it is preferably added during or after the developer is supplied. Further, the developer supplying means and the development promoting means may be integrated. In the present invention, the time for the PS plate to pass through the development zone is 1
Preferably, the time is 5 seconds to 60 seconds. The automatic developing machine used to carry out the method of the present invention automatically transports and processes the PS plate, and is equipped with a means for supplying an appropriate amount of developer and a means for heating the PS plate during or just before development. If so, the shape, configuration, structure, etc. thereof are not particularly limited, but it is preferable that the conveyance type is a horizontal conveyance type using conveyance rollers, endless belts, etc., for example. In the present invention, the means for heating the I)S plate includes P
A method can be used in which the S plate is brought into contact with a heating medium during transportation. This heating medium may be solid, liquid, or gas. Examples of the solid heating medium include a heat-generating stamp material such as a nichrome wire, and a medium made of a metal with high thermal conductivity such as aluminum heated by a heat medium such as hot water. The shape of the solid medium is preferably a plate or a roller. If the solid medium is plate-shaped, it is preferably provided so as to be in contact with the back surface of the 28 plate being conveyed. If it is roller-shaped, it is preferably provided so as to be in contact with the back surface of the 28 plate being conveyed. It is preferable that one of the rollers is heated by nipping it between a pair of heated rollers, and in this case, it is preferable that the roller in contact with the back side is heated. Examples of the liquid heating medium include hot water. A specific method in this case includes a method of spraying hot water or the like from a nozzle or the like onto the front and/or back surfaces of the 28th plate while it is being transported. Examples of the gaseous heating medium include heated air. In this case, concrete methods include blowing heated air onto the front and/or back surfaces of the 28th plate from a nozzle while it is being transported, or creating a chamber filled with heated air and passing it through the chamber. There are several methods. In the present invention, l) heating the S plate is during development and/or immediately before development;
This is the period during which the plate is in contact with the developer, for example, the period from when the developer is supplied onto the plate until it is squeezed with a squeegee roller or the like. The phenomenon surface +iif refers to the period during which the PS plate comes into contact with the developer and is on the transport path of 1" I71 in a developing method in which the PS plate is transported and developed. Heating is carried out at a temperature at which the temperature of the heated 28th plate is as close as possible to the temperature of the developer applied on the 28th plate, that is, the intended development temperature (preferably, the developing temperature is u°C).
It is preferable to heat so that the temperature is maintained within the range of Moreover, it is preferable that the temperature of the heated 28th plate is usually in the range of 30 to 80°C. The heating conditions to obtain such heating results vary depending on the type of heating member and heating conditions, the temperature of the PS plate before heating, the temperature of the atmosphere in the development zone, etc., but the relationship between the heating conditions and the results can be determined through experiments in advance. The heating conditions can be determined by determining the heating conditions, and the heating results can be detected by a sensor and fed back to the heating conditions. In carrying out the present invention, l) It is preferable that the automatic developing machine is provided with a sensor that detects the temperature of the atmosphere in which the 8th plate is developed, and a mechanism that adjusts the heating conditions according to the detected temperature. The PS plate to which the method of the present invention is applied is one in which a photosensitive composition is coated on a support, or a soluble layer on which an image-wise resist is formed by electrophotography or the like is provided on the support. This is what is being done. Supports used for PS plates include paper, plastic (e.g. polyethylene, polypropylene, polystyrene, etc.) laminated paper, aluminum (including aluminum alloys), metal plates such as zinc, copper, etc., cellulose acetate, triple Cellulose acetate, but

【Jピオン酸セルロー
ス、ポリエチレンテレフタレート、ポリエチレン、ポリ
プロピレン、ポリカーボネート、ポリビニルアセタール
などのようなプラスチックのフィルム、上記の如き金属
がラミネートもしくは蒸着された紙もしくはプラスチッ
クフィルム、アルミニウムもしくはクロームメッキが施
された一′胸板などが挙げられ、これらのうち特にアル
ミニウムおよびアルミニウム被覆された複合支持体が好
ましい。 また、アルミニウム材の表面は、保水性を高め感光層と
密着性を向上させる目的で粗面化処理されていることが
望ましい。 本発明が適用されるPS版の感光性組成物は必須成分と
して感光性物質を含んでおり、感光性物質として露光ま
たはその後の現像処理により、その物理的、化学的性質
が変化するもので、例えば露光により現像液、に対する
溶解性に差が生じるもの、露光の11η後で分子間の接
着力に差が生じるもの、露光またはその後の現像処理に
より水および油に対する親和性に差が生じるもの等が含
まれる。 感光性物質の代表的なものとしては、例えば感光性ジア
ゾ化合物、感光性アジド化合物、エチレン性不飽和二重
結合を有する化合物、酸触媒で重合を起こすエポキシ化
合物、酸で分解するc−〇−C−基を有する化合物等が
挙げられる。感光性ジアゾ化合物、とじては、露光によ
りアルカリ可溶性に変化するポジ型のものとして0−キ
ノンジアジド化合物、露光により溶解性が減少するネガ
型のものとして芳香族ジアゾニウム塩等が孕げられる。 本発明における現像処理に用いられる現像液のうら、ジ
アゾ化合物等を感光性物質としたネガ型28版に対して
は、アルカリ剤、有機溶剤、アニオン型界面活性剤、1
15.硫酸塩等を水を溶媒として含ませたものが好まし
く用いられる。 他方、0−キノンジアジド化合物を含む感光層を(fす
るポジ型PS版に対しては上記アルカリ剤を通常0.1
〜30重量%、好ましくは0.5〜20屯量%含有した
水溶液が用いられ、通常pl(9〜13の範囲で用いら
れるのが好ましい。 〔実施例〕 以下、実施例によって本発明を具体的に説明する。 実施例1 厚さ0.3Hのアルミニウム板を硝酸溶液中で電気化学
的に粗面化17、上ぐ沙浄1.を一泌薩峙婉諮山で陽極
酸化を行って2.5g/x”の酸化皮膜を上記アルミニ
ウム板表面」二に形成させた。 水洗、乾燥後、特開昭56−1044づ−の実施例に従
って合成したレゾルシンベンズアルデヒド樹脂とナフト
キノン1.2−ジアジド−5−スルホニルクロライドと
のエステル化物3部、クレゾールホルマリンノボラック
樹脂9部およびビクトリア・ピュア・プール−BOH(
染料、保土谷化学工業株式会社′yA)0.12部を2
−メトキシエタール100部に溶解した感光液を上記支
持体上に塗布乾燥し、2.8Li/11”の感光性層を
有するPS版を得た。 このようにして得られた版を800ixX1003xm
の大きさに断裁し多数枚用意した。 次に、この試料に網点画像面積率が約80%である網点
画像を全面に均一にもつ透明陽画を通じて80G11の
距離から2KWのメタルハライドランプを用いて60秒
間露光を与えた。露光済試料を第1図に示す自動現像機
によって現像した。 図中、Pは露光済みのPS版で、PS版Pは挿入台7の
上を通り、搬送ローラ対1,2および3にょって矢印a
の方向に搬送される。搬送ローラ対1によって現像部に
送られたPS版Pにローラ5を介して現像液が供給され
る。現像液は現像液槽9に貯えられており、ポンプlO
によって現像液供給パイプ8を通り複数のノズルを有す
るシャワーバイブロへ送られ、そのノズルからローラ5
に供給される。 現像液槽9内の現像液の温度は図示してないが温度調節
装置により30℃に保った。 挿入台7には第2図に示す加熱媒体4が埋め込まれてお
り、PS版の裏面がこの加熱媒体と接触するように搬送
される。加熱媒体の表面温度は60℃になる様に設定し
た。 なお、第2図において、14は発熱部材にクロム線の周
囲を耐火絶縁部材で被覆したらの)、15はアルミ板で
あり、アルミ板15の搬送方向長さは15GNである。 現像液槽9に下記現像液を入れ、11η記露光済のPS
版試料を搬送方向長さが1001uyとなるように送っ
て現像を行った。 現像液 ケイ酸カリウム水溶液          10010
0O+02含1ik26i’j量%、K20含rttt
3重:rt %)水酸化カリウム          
   1007水                 
              2012現像ゾーンの雰
囲気の温度は20℃、PS版の搬送速度は1.21/分
、ローラ5の直面のPS版の温度は29℃であった。 現像の終ったPS版は搬送ローラ対2によって水洗部に
搬入されてシャワーパイプ11よりの水流によって版面
を水洗された後、搬送ローラ対3によって機外に排出さ
れた。水洗水は水洗槽12に貯えられポンプ13によっ
て循環使用した。 得られた版をオフセット印刷機にかけ印刷したところ良
好な印刷物が得られた。 更に前記PS版試料100枚を連続的に処理し、10枚
目毎の試料について前記と同様の印刷を行った結末、す
べて1枚目の試料と同じ良好な印刷物が得られた。 比較例I 挿入台での加熱を行わないほかは実施例1と同様の実験
を行った。 得られた版を実施例1と同一条件で印刷を行ったが、ツ
ヤドウ部の目の開きが悪く階調のつぶれが認められた印
刷物が得られるものがIO版中2版あり、必ずしも最初
の版と同じ性能のものが常には得られなかった。 実施例2 厚さ0.24yiの砂目立てしたアルミニウム板を硫酸
中で陽極酸化し、約2 g/Iの酸化皮膜をつくり、よ
く洗浄した後、珪酸ナトリウム水溶液に浸漬し、充分水
洗後、乾燥し、下記組成の感光液を塗布した。 乾燥後の塗布rIiは、1.89/J!2であった。こ
のようにして得られたネガ型PS版を800*mx10
03xzの大きさに裁断したものを多数枚用窓した。 次いで、この試料に透明陰画を通じて50czの距離か
ら2KYのメタルハライドランプ用いて、30秒間露光
した。次に第3図に示した自動現像機を用い現像液槽に
下記組成の現像液を入れ、前期の露光済PS版を800
xi+/min、の速度で搬送し現像した。 現像液 この自動現像機は、加熱媒体が現像部に設けられ、その
形状がローラ状であること又現像部の後半部分にブラシ
ローラ16を有する他は実施例1で用いた第1図の自動
現像機と同様の構造を有する。 第3図において、17は加熱媒体である加熱ローラ、1
8は受はローラである。加熱ローラ17の概略斜視図を
第4図に示す。第4図において、19は発熱部材(例え
ばシーズヒーター)、20は金属円筒(材質はステンレ
ス鋼)である。 この実験において、現像ゾーンの雰囲気の温度は20℃
、金属円筒20の表面温度は55℃±2℃に制御した。 水洗後の版を印刷機にかけ印刷したところ良好な印刷物
が得られた。 2枚目以後も同様の現像方法で100枚処理した。 10枚目、20枚目と10枚目毎の版を印刷機にかけ印
刷したところ1枚目と同様の良好な印刷物が得られた。 〔発明の効果〕 本発明により、28版を搬送しながら、循環して使用す
る現像液を28版面上に比較的多量に供給する現像方法
、および処理されるI】8版1枚毎に実質的に未使用の
現像液を必要量づつ28版面上に供給する現像方法によ
る自動現像機を用いて多数枚の28版を現像処理する場
合の現像結果の均一性が改良される。そして、かかる効
果は後者の現像方式において特に顕著である。
[J Films of plastics such as cellulose pionate, polyethylene terephthalate, polyethylene, polypropylene, polycarbonate, polyvinyl acetal, etc., paper or plastic films laminated or vapor-deposited with metals such as those mentioned above, aluminum or chrome plated films. Among these, aluminum and aluminum-coated composite supports are particularly preferred. Further, the surface of the aluminum material is preferably roughened for the purpose of increasing water retention and improving adhesion to the photosensitive layer. The photosensitive composition of the PS plate to which the present invention is applied contains a photosensitive substance as an essential component, and the physical and chemical properties of the photosensitive substance change upon exposure or subsequent development treatment. For example, there may be a difference in solubility in a developing solution due to exposure, a difference in intermolecular adhesion after 11η of exposure, a difference in affinity for water and oil due to exposure or subsequent development, etc. is included. Typical photosensitive substances include, for example, photosensitive diazo compounds, photosensitive azide compounds, compounds with ethylenically unsaturated double bonds, epoxy compounds that polymerize with acid catalysts, and c-〇- that decompose with acids. Examples include compounds having a C-group. Examples of photosensitive diazo compounds include 0-quinonediazide compounds, which are positive types that change to alkali solubility when exposed to light, and aromatic diazonium salts, which are negative types whose solubility decreases when exposed to light. At the back of the developer used in the development process of the present invention, for a negative 28 plate in which a diazo compound or the like is used as a photosensitive substance, an alkaline agent, an organic solvent, an anionic surfactant, 1
15. Preferably used is one containing sulfate or the like in water as a solvent. On the other hand, for a positive PS plate containing a photosensitive layer containing an 0-quinonediazide compound (f), the above alkaline agent is usually added at a concentration of 0.1
An aqueous solution containing up to 30% by weight, preferably 0.5 to 20% by weight, is used, and it is usually preferable to use it in the range of pl (9 to 13). Example 1 An aluminum plate with a thickness of 0.3H was electrochemically roughened in a nitric acid solution, and the surface of the aluminum plate was anodized in a nitric acid solution. An oxide film of 2.5 g/x" was formed on the surface of the aluminum plate. After washing with water and drying, resorcin benzaldehyde resin and naphthoquinone 1,2-diazide synthesized according to the example of JP-A-56-1044 were added. -3 parts of esterified product with 5-sulfonyl chloride, 9 parts of cresol-formalin novolak resin and Victoria Pure Pool-BOH (
Dye, Hodogaya Chemical Industry Co., Ltd.'yA) 0.12 parts
- A photosensitive solution dissolved in 100 parts of methoxyethal was coated on the above support and dried to obtain a PS plate having a 2.8 Li/11" photosensitive layer. The plate thus obtained was 800ix x 1003xm
A large number of sheets were prepared by cutting them to the size of . Next, this sample was exposed to light for 60 seconds using a 2KW metal halide lamp from a distance of 80G11 through a transparency having a uniform halftone image over the entire surface with a halftone image area ratio of about 80%. The exposed sample was developed using an automatic developing machine shown in FIG. In the figure, P is the exposed PS plate, and the PS plate P passes over the insertion table 7 and is moved by the arrow a by the conveyor roller pairs 1, 2, and 3.
transported in the direction of A developing solution is supplied via rollers 5 to the PS plate P sent to the developing section by the transport roller pair 1. The developer is stored in the developer tank 9, and the pump lO
The developer is sent to the shower vibro having a plurality of nozzles through the developer supply pipe 8, and from the nozzle to the roller 5.
is supplied to Although the temperature of the developer in the developer tank 9 is not shown, it was maintained at 30° C. by a temperature control device. A heating medium 4 shown in FIG. 2 is embedded in the insertion table 7, and the PS plate is conveyed so that the back surface thereof comes into contact with this heating medium. The surface temperature of the heating medium was set to 60°C. In addition, in FIG. 2, 14 is a heat-generating member whose periphery is covered with a fireproof insulating material), 15 is an aluminum plate, and the length of the aluminum plate 15 in the conveyance direction is 15GN. Pour the following developer into the developer tank 9 and remove the exposed PS for 11η.
Development was performed by transporting the plate sample so that the length in the transport direction was 1001 uy. Developer potassium silicate aqueous solution 10010
0O+02 content 1ik26i'j amount%, K20 content rttt
Triple: rt%) Potassium hydroxide
1007 water
The temperature of the atmosphere in the 2012 development zone was 20°C, the transport speed of the PS plate was 1.21/min, and the temperature of the PS plate facing roller 5 was 29°C. After the development, the PS plate was transported to a washing section by a pair of transport rollers 2, and the plate surface was washed with water by a stream of water from a shower pipe 11, and then discharged from the machine by a pair of transport rollers 3. The washing water was stored in a washing tank 12 and circulated by a pump 13. When the obtained plate was printed on an offset printing machine, good printed matter was obtained. Further, 100 of the PS plate samples were processed continuously, and every 10th sample was printed in the same manner as described above. As a result, all prints were as good as the first sample. Comparative Example I The same experiment as in Example 1 was conducted except that no heating was performed on the insertion table. The obtained plates were printed under the same conditions as in Example 1, but two of the IO plates produced prints with poor opening in the glossy area and crushed gradation, and it was not necessarily the case that the first It was not always possible to obtain the same performance as the version. Example 2 A grained aluminum plate with a thickness of 0.24 yi was anodized in sulfuric acid to form an oxide film of about 2 g/I, thoroughly washed, immersed in a sodium silicate aqueous solution, thoroughly washed with water, and then dried. Then, a photosensitive liquid having the following composition was applied. The coating rIi after drying is 1.89/J! It was 2. The negative PS plate obtained in this way is 800*mx10
A large number of windows were made from the pieces cut to the size of 03xz. The sample was then exposed through a transparent negative for 30 seconds using a 2KY metal halide lamp from a distance of 50 cz. Next, using the automatic developing machine shown in Figure 3, put a developer with the following composition into the developer tank, and remove the previously exposed PS plate at 800
It was transported and developed at a speed of xi+/min. Developer This automatic developing machine is similar to the automatic developing machine shown in FIG. 1 used in Example 1, except that a heating medium is provided in the developing section, the shape is a roller, and a brush roller 16 is provided in the latter half of the developing section. It has a similar structure to a developing machine. In FIG. 3, 17 is a heating roller which is a heating medium;
8 is a roller receiver. A schematic perspective view of the heating roller 17 is shown in FIG. In FIG. 4, 19 is a heat generating member (for example, a sheathed heater), and 20 is a metal cylinder (made of stainless steel). In this experiment, the temperature of the atmosphere in the development zone was 20°C.
The surface temperature of the metal cylinder 20 was controlled at 55°C±2°C. When the plate after washing with water was printed on a printing machine, good printed matter was obtained. After the second sheet, 100 sheets were processed using the same developing method. When the 10th sheet, the 20th sheet, and every 10th sheet were printed using a printing press, good printed matter similar to that of the first sheet was obtained. [Effects of the Invention] According to the present invention, there is provided a developing method for supplying a relatively large amount of circulating developer onto the surface of the 28 plates while conveying the 28 plates, and a developing method in which a relatively large amount of developing solution is supplied onto the surface of the 28 plates while the 28 plates are being conveyed. The uniformity of the development result is improved when a large number of 28 plates are developed using an automatic developing machine that supplies a necessary amount of unused developer to each 28 plate. This effect is particularly remarkable in the latter developing method.

【図面の簡単な説明】[Brief explanation of drawings]

第1図および第3図は本発明を実施するための装置の例
を示す略斜視図、第2図は第1図中の加熱媒体の、第4
図は第3図中の加熱媒体のそれぞれ略斜視図である。 1.2.3・・・搬送ローラ対 4・・・加熱媒体 5・・・ローラ 6・・・シャワーバイブ 7・・・挿入台 8・・・現像液パイプ 9・・・現像液槽 10、】訃・・ポンプ 14・・・発熱部材 15・・・アルミ板 16・・・ブラシ〔ゾーン 17−・・加熱ローラ 18・・・受はローラ I9・・・発熱部材 20・・・金属円筒 出願人 小西六写真工業株式会社 第2図 ブq・・  さ4丘 プ4す、1tミー= づント;1
5・・・  了、レミ 、)・反
1 and 3 are schematic perspective views showing an example of an apparatus for carrying out the present invention, and FIG. 2 shows a fourth part of the heating medium in FIG.
Each figure is a schematic perspective view of the heating medium in FIG. 3. 1.2.3...Transport roller pair 4...Heating medium 5...Roller 6...Shower vibe 7...Insertion stand 8...Developer pipe 9...Developer tank 10, ] Pump 14... Heat generating member 15... Aluminum plate 16... Brush [Zone 17-... Heating roller 18... Reception is roller I9... Heat generating member 20... Metal cylinder application People Konishiroku Photo Industry Co., Ltd. Figure 2 Buq... Sa4oka Pu4su, 1t Me = Zunto; 1
5... Ryo, Remi, )・Anti

Claims (1)

【特許請求の範囲】[Claims] 感光性平版印刷版を画像露光後、自動現像機を用いて現
像処理する方法において、現像途中または現像直前に感
光性平版印刷版を加熱することを特徴とする感光性平版
印刷版の現像処理方法。
A method for developing a photosensitive planographic printing plate using an automatic processor after image exposure, the method comprising heating the photosensitive planographic printing plate during or immediately before development. .
JP8289886A 1986-04-09 1986-04-09 Developing process method for photosensitive lithographic printing plate by which stability of developing process is improved Granted JPS62238562A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8289886A JPS62238562A (en) 1986-04-09 1986-04-09 Developing process method for photosensitive lithographic printing plate by which stability of developing process is improved

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8289886A JPS62238562A (en) 1986-04-09 1986-04-09 Developing process method for photosensitive lithographic printing plate by which stability of developing process is improved

Publications (2)

Publication Number Publication Date
JPS62238562A true JPS62238562A (en) 1987-10-19
JPH0577068B2 JPH0577068B2 (en) 1993-10-25

Family

ID=13787077

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8289886A Granted JPS62238562A (en) 1986-04-09 1986-04-09 Developing process method for photosensitive lithographic printing plate by which stability of developing process is improved

Country Status (1)

Country Link
JP (1) JPS62238562A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6373523A (en) * 1986-09-16 1988-04-04 Daikin Ind Ltd Method for developing resist

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6373523A (en) * 1986-09-16 1988-04-04 Daikin Ind Ltd Method for developing resist
JPH069184B2 (en) * 1986-09-16 1994-02-02 ダイキン工業株式会社 Resist development method

Also Published As

Publication number Publication date
JPH0577068B2 (en) 1993-10-25

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