JP3231085B2 - Electrophotographic lithographic printing plate processing method - Google Patents

Electrophotographic lithographic printing plate processing method

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Publication number
JP3231085B2
JP3231085B2 JP19540292A JP19540292A JP3231085B2 JP 3231085 B2 JP3231085 B2 JP 3231085B2 JP 19540292 A JP19540292 A JP 19540292A JP 19540292 A JP19540292 A JP 19540292A JP 3231085 B2 JP3231085 B2 JP 3231085B2
Authority
JP
Japan
Prior art keywords
liquid
plate
photoconductive layer
printing plate
eluate
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
Application number
JP19540292A
Other languages
Japanese (ja)
Other versions
JPH0635241A (en
Inventor
泰洋 相澤
裕二 高上
貞夫 栗生
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.)
Mitsubishi Paper Mills Ltd
Original Assignee
Mitsubishi Paper Mills Ltd
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 Mitsubishi Paper Mills Ltd filed Critical Mitsubishi Paper Mills Ltd
Priority to JP19540292A priority Critical patent/JP3231085B2/en
Publication of JPH0635241A publication Critical patent/JPH0635241A/en
Application granted granted Critical
Publication of JP3231085B2 publication Critical patent/JP3231085B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【０００１】[0001]

【産業上の利用分野】本発明は、導電性支持体上に光導
電層を設けた平版印刷版原版に電子写真方式によりトナ
−画像を形成させた後、溶出液を供給して非画像部光導
電層を溶出除去し、続いてリンス処理して印刷版を作製
するための電子写真平版印刷版の処理方法に関し、製版
不良の発生がなく長期に亙って安定した品位の処理が行
なえ、更に液交換の頻度を減少させる電子写真平版印刷
版の処理方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lithographic printing plate precursor having a photoconductive layer provided on a conductive support, forming a toner image on the lithographic printing plate precursor by electrophotography, and then supplying an eluate to the non-image area. With respect to a method of processing an electrophotographic lithographic printing plate for preparing a printing plate by eluting and removing a photoconductive layer and subsequently rinsing, a process of stable quality can be performed over a long period without occurrence of platemaking defects, Further, the present invention relates to a method for processing an electrophotographic lithographic printing plate which reduces the frequency of liquid exchange.

【０００２】[0002]

【従来の技術】非画像部アルカリ溶出型電子写真平版印
刷版は、一般に光導電性物質とアルカリ可溶性の結着樹
脂とからなる光導電層を導電性支持体上に設けてなり、
電子写真方式により光導電層上にトナ−画像を形成さ
せ、溶出工程に於てアルカリ剤等を含有する溶出液によ
りトナ−画像部以外の非画像部光導電層を可溶化させて
溶出し、続くリンス処理工程に於てリンス液を供給して
版面に残存する可溶化した光導電層成分を洗浄除去した
後、通常保護ガム処理されて印刷に供される。2. Description of the Related Art A non-image area alkali-eluting electrophotographic lithographic printing plate generally comprises a photoconductive layer comprising a photoconductive substance and an alkali-soluble binder resin provided on a conductive support,
A toner image is formed on the photoconductive layer by electrophotography, and in the elution step, the non-image part photoconductive layer other than the toner image part is solubilized and eluted with an eluate containing an alkali agent or the like, and eluted. In the subsequent rinsing step, a rinsing liquid is supplied to wash and remove the solubilized photoconductive layer components remaining on the plate surface, and then, usually subjected to a protective gum treatment and used for printing.

【０００３】その溶出工程はトナ−のアルカリ溶解性と
光導電層のそれとの差を利用したものであって、本質的
にトナ−画像が形成された光導電層自体がアルカリ難溶
性になることはないため、溶出を押すとサイドエッチと
呼称される光導電層側面からの溶出液の回込みによって
画像部光導電層をも浸蝕し、画線が細って良好な画像再
現性が得られない。また、可溶化した光導電層成分が溶
出液中に流入すると、循環再使用に従って溶出能が低下
して溶出不良を招く恐れがある。そのため、溶出工程で
は非画像部を可溶化させるに留め、次工程で可溶化した
光導電層を除去することが行なわれているが、溶出処理
後に版上に残存する可溶化した光導電層成分及び溶出液
の除去効率如何では、次工程のリンス処理に多大な影響
を及ぼすばかりか、製版及び印刷品位の降落を招く恐れ
さえある。The elution step utilizes the difference between the alkali solubility of the toner and that of the photoconductive layer, and the photoconductive layer itself on which the toner image is formed becomes essentially insoluble in alkali. When the elution is pressed, the image area photoconductive layer is also eroded by the infiltration of the eluate from the side of the photoconductive layer called a side etch, and the image is thin and good image reproducibility is not obtained. . In addition, when the solubilized photoconductive layer component flows into the eluate, there is a possibility that the elution ability is reduced due to re-use in circulation, resulting in poor elution. Therefore, in the elution step, the non-image area is only solubilized, and the photoconductive layer solubilized in the next step is removed. However, the solubilized photoconductive layer component remaining on the plate after the elution treatment is used. In addition, depending on the efficiency of removing the eluate, the rinsing treatment in the next step is not only greatly affected, but also the plate making and the print quality may be lowered.

【０００４】則ち、次工程以降の処理液への除去物の混
入が増大すれば、液ｐＨの上昇によってサイドエッチを
悪化させ、除去物成分が処理液中で不溶物となれば、版
への再付着による印刷汚れや処理液循環系の機能低下を
もたらす。また上記欠陥が発現しなくても、光導電層に
含有される光導電性物質は一般的に高隠蔽性の有色物質
であり、リンス処理後にも多少供給した処理液が版上に
残るから、リンスに用いる処理液に光導電性物質が多く
混入すると、版面に光導電性物質が多く残って一見して
は溶出不良かリンス不良か判別し難く見掛け上好ましく
ないし、更には次工程（例えば保護ガム塗布工程）に強
く着色した処理液が流入して、次工程の処理液までも同
様の理由で液交換頻度が高まってしまう欠点があった。[0004] That is, if the amount of the removed material mixed into the processing solution after the next step increases, the side etch is deteriorated due to an increase in the pH of the solution, and if the removed material becomes insoluble in the processing solution, it is added to the plate. This causes printing stains due to the re-adhesion of the ink and the deterioration of the function of the processing liquid circulation system. Also, even if the above defects do not appear, the photoconductive substance contained in the photoconductive layer is generally a highly concealed colored substance, and the processing liquid slightly supplied after the rinsing treatment remains on the plate, If a large amount of the photoconductive substance is mixed in the processing solution used for rinsing, a large amount of the photoconductive substance remains on the plate surface, so that it is difficult to determine at first glance whether the elution is poor or the rinsing is not good. There is a drawback that the strongly colored processing liquid flows into the gum coating step), and the frequency of liquid exchange increases even for the processing liquid in the next step for the same reason.

【０００５】[0005]

【発明が解決しようとする課題】本発明は、導電性支持
体上に光導電層を設けた平版印刷版原版に電子写真方式
によりトナ−画像を形成させた後、トナ−画像部以外の
非画像部光導電層の溶出除去を行なって印刷版を作製す
るための電子写真平版印刷版の処理方法に於て、サイド
エッチを抑制しつつ残膜等の溶出不良を防止して、版全
面を均質に溶出することは勿論、液循環再使用による可
溶化光導電層の混入に起因する液性劣化を抑制して長期
に亙って安定した処理が行なえると共に液交換の頻度を
大幅に低下させ、もって廃液と保守管理の負担を軽減す
る処理方法を提供することにある。更に詳しくは、リン
ス処理工程に於て循環リンス液の使用劣化による実質的
及び見掛け上の種々の処理欠陥を改善する電子写真平版
印刷版の処理方法を提供することにある。SUMMARY OF THE INVENTION The present invention relates to a method for forming a toner image on a lithographic printing plate precursor having a photoconductive layer provided on a conductive support by an electrophotographic method. In the processing method of an electrophotographic lithographic printing plate for preparing a printing plate by performing elution removal of an image portion photoconductive layer, the side surface etching is suppressed while a poor elution such as a residual film is prevented, and the entire surface of the plate is prevented. It not only dissolves homogeneously, but also suppresses deterioration of liquidity caused by mixing of the solubilized photoconductive layer due to reuse of liquid circulation, enabling stable processing over a long period of time and greatly reducing the frequency of liquid exchange. Accordingly, it is an object of the present invention to provide a processing method that reduces the burden of waste liquid and maintenance. More specifically, it is an object of the present invention to provide a method for processing an electrophotographic lithographic printing plate which substantially eliminates various processing defects caused by use deterioration of a circulating rinsing solution in a rinsing process.

【０００６】[0006]

【課題を解決するための手段】上記問題を解決するため
検討を重ねた結果、導電性支持体上に光導電層を設けた
平版印刷版原版に電子写真方式によりトナ−画像を形成
させ、次いでトナ−画像形成面に溶出液を供給して非画
像部光導電層を膨潤可溶化させ、可溶化光導電層除去手
段により版上の溶出液と可溶化した光導電層とを除去し
た後、続くリンス処理工程に於て少なくとも１回は循環
する処理液でリンスし、更にリンス処理工程最後に未使
用処理液でリンスする電子写真平版印刷版の処理方法に
於て、リンス処理工程最後の未使用処理液を圧搾空気と
共にスプレ−方式により供給し、該処理液の単位印刷版
面積に対する供給量が２５〜２００ｍｌ/ｍ2、該処理液
供給時の圧搾空気圧が２〜１０ｋｇ/ｃｍ2なる範囲でリ
ンスすることにより達成された。As a result of repeated studies to solve the above problems, a toner image was formed by electrophotography on a lithographic printing plate precursor having a photoconductive layer provided on a conductive support, The toner is supplied with an eluent on the image forming surface to swell and solubilize the non-image area photoconductive layer, and after removing the eluate on the plate and the solubilized photoconductive layer by the solubilized photoconductive layer removing means, In the following rinsing process, the rinsing process is performed at least once, and the rinsing process is performed at the end of the rinsing process. The processing liquid to be used is supplied together with the compressed air by a spray method, and the supply amount of the processing liquid per unit printing plate area is 25 to 200 ml / m 2 , and the compressed air pressure when supplying the processing liquid is 2 to 10 kg / cm 2. By rinsing with Has been achieved.

【０００７】則ち本発明は、電子写真平版印刷版トナ−
画像形成面に溶出液を供給して可溶化した光導電層を除
去した後、リンス処理する電子写真平版印刷版の処理方
法に於て、循環する処理液でリンスした後のリンス処理
最終工程で未使用処理液を版上に供給してリンスするこ
とにより、版上に残存する着色疲労した循環処理液を未
使用処理液によって除去して版面を清浄化すると共に、
循環処理液の補充及びそれに付帯した処理液劣化の遅延
を図ることを特徴としている。更に、未使用処理液を圧
搾空気と共にスプレ−方式により供給することで、少量
の処理液で印刷版支持体表面微凹部まで清浄化が図れ
る。That is, the present invention relates to an electrophotographic lithographic printing plate toner.
After removing the solubilized photoconductive layer by supplying an eluent to the image forming surface, in the processing method of the electrophotographic lithographic printing plate for rinsing, after rinsing with the circulating processing solution, By supplying and rinsing an unused processing solution on the plate in the final step of the rinsing process, the circulating processing solution that has been colored and fatigued on the plate is removed by the unused processing solution to clean the plate surface,
It is characterized in that replenishment of the circulating treatment liquid and delay of deterioration of the treatment liquid accompanying the replenishment are achieved. Further, by supplying the unused processing liquid together with the compressed air by a spray method, it is possible to clean even the fine recesses on the surface of the printing plate support with a small amount of the processing liquid.

【０００８】以下、本発明の処理方法を処理工程に順じ
て詳細に説明する。本発明の処理方法に於ける処理工程
は、少なくとも溶出液供給工程、可溶化光導電層除去工
程、及び複数回のリンス処理工程からなり、更に詳しく
はリンス処理工程に於ては少なくとも１回は循環する処
理液で処理し、リンス工程最後に未使用処理液でリンス
する。未使用処理液によるリンスは、圧搾空気と共にス
プレ−方式により供給して行なう。Hereinafter, the processing method of the present invention will be described in detail according to the processing steps. The treatment step in the treatment method of the present invention comprises at least an eluate supply step, a solubilized photoconductive layer removing step, and a plurality of rinsing treatment steps, and more specifically, at least one rinsing treatment step. It is treated with a circulating treatment liquid, and rinsed with an unused treatment liquid at the end of the rinsing step. The rinsing with the unused processing liquid is performed by supplying the compressed air together with the compressed air by a spray method.

【０００９】溶出液供給工程では、電子写真方式により
トナ−画像が形成された平版印刷版の光導電層面に溶出
液を供給する。溶出液供給方式は従来公知の機構、例え
ばシャワ−、スライドホッパ、カ−テンコ−タ、ディッ
プ方式等が使用出来るが、特にシャワ−を用いる場合に
は管から吐出した液を別の部材、例えば整流板や版搬送
上ロ−ル等、を介して光導電層面に均一に供給する方式
が好適である。また全ての方式に於て、より溶出時間を
短縮し液供給不良を防止するために、液計量工程に到る
間に流動促進機構を設けて版上に供給された溶出液の流
動による置換を図ることや、溶出液を複数回に亙って供
給することが望ましい。また、溶出液の供給量は、搬送
中版端部から溶出液が流下する量であることが肝要であ
る。これにより、一部は非画像部光導電層を膨潤可溶化
させ、余剰分は版上を流動して被溶出部に既にある溶出
液と一部置換しながら版端部より流下する。従って、版
端部では液置換が頻繁に起こり、光導電層界面近傍の溶
出液流動速度が上昇することによって、溶出度の版内変
動が抑制される。より具体的な溶出液供給量は、０.２
〜１０ｋｇ/ｍ2が良く、より好ましくは０.５〜５ｋｇ/
ｍ2が良い。In the eluate supply step, the eluate is supplied to the photoconductive layer surface of the lithographic printing plate on which a toner image has been formed by an electrophotographic method. As the eluate supply method, a conventionally known mechanism, for example, a shower, a slide hopper, a curtain coater, a dip method, or the like can be used. Particularly, when a shower is used, the liquid discharged from the tube is separated by another member, for example, It is preferable to uniformly supply the photoconductive layer surface via a rectifying plate, a roll for transporting a plate, or the like. In all systems, in order to further shorten the elution time and prevent liquid supply failure, a flow promoting mechanism is provided during the liquid measurement process to replace the eluate supplied on the plate by the flow. It is desirable that the eluate be supplied multiple times. It is important that the supply amount of the eluate is such that the eluate flows down from the edge of the plate during transportation. As a result, a part of the non-image part photoconductive layer swells and solubilizes, and the surplus flows on the plate and flows down from the plate edge while partially replacing the eluate already present in the part to be eluted. Therefore, liquid replacement frequently occurs at the edge of the plate, and the flow rate of the eluate near the interface of the photoconductive layer increases. A more specific supply amount of the eluate is 0.2
10 to 10 kg / m 2 , more preferably 0.5 to 5 kg / m 2
m 2 is good.

【００１０】溶出液が供給された電子写真平版印刷版
は、望ましくは次に溶出液計量工程にて液計量手段によ
り少なくとも版上にある余剰の溶出液を一定量残して計
量除去する。これにより、疲労分溶出液と可溶化した光
導電層とを版上に残し、余剰の溶出液を回収再使用す
る。則ち、液計量は液計量時に可溶化した光導電層の混
入を抑制防止しながら、実質的に光導電層の可溶化に関
与しなかった溶出液を最大限版上から除去することが重
要である。従って、液計量後の版上に残す溶出液量（液
計量残液量）は、多いと必然的に溶出液消費量が増加す
るし、液計量後可溶化光導電層を除去するまでに更に可
溶化が進行してサイドエッチの悪化を招くため、液計量
残液量は少ない方が望ましい。The electrophotographic lithographic printing plate to which the eluate has been supplied is desirably measured and removed by a liquid measuring means in the eluate measuring step, leaving at least a certain amount of excess eluate on the plate. As a result, the fatigue eluate and the solubilized photoconductive layer are left on the plate, and the excess eluate is collected and reused. In other words, in liquid measurement, it is important to remove as much as possible the eluate that has not substantially contributed to the solubilization of the photoconductive layer from the plate while preventing the mixing of the solubilized photoconductive layer during liquid measurement. It is. Therefore, if the amount of the eluate remaining on the plate after the liquid measurement (the amount of the liquid remaining after the liquid measurement) is large, the consumption amount of the eluate will inevitably increase. Since the solubilization progresses and the side etch is deteriorated, it is desirable that the residual amount of the liquid measured is small.

【００１１】しかしながら、溶出液持出し量が少なすぎ
ると、結果として除去液の粘性が著しく上昇し、応々に
して連続製版では可溶化光導電層除去部（部材）に除去
液が蓄積して除去効果が半減するし、液計量部で可溶化
した光導電層が剥離する可能性が高くなって好ましくな
い。まして、液計量工程で版上の液状物を全て除去しよ
うとすると、疲労溶出液は勿論光導電層成分まで溶出液
に混入して液計量の意図と異なってしまう。そこで、液
計量残液量は３０〜１２０ｇ/ｍ2が良く、更に好ましく
は４０〜９０ｇ/ｍ2が良い。溶出液計量工程前に流下し
た溶出液及びこの計量除去液は殆ど溶出処理疲労を被っ
ていないため、これを再循環して使用することが出来
る。However, if the amount of the eluate taken out is too small, the viscosity of the remover will increase significantly as a result, and the remover will accumulate and be removed in the solubilized photoconductive layer removing section (member) in continuous plate making. The effect is reduced by half, and the possibility that the photoconductive layer solubilized in the liquid measuring section is likely to be peeled off is not preferable. Furthermore, if it is attempted to remove all the liquid material on the plate in the liquid measuring step, not only the fatigue eluent but also the photoconductive layer component will be mixed into the eluate, which is different from the intended liquid measurement. Therefore, the liquid metering residual liquid volume may have 30 to 120 g / m 2, further preferably from 40~90g / m 2. The eluate flowing down before the eluate measuring step and the eluate were hardly subjected to elution fatigue, and can be recycled and used.

【００１２】液計量工程に於ける液計量具としては、版
搬送方向に対し何等かの駆動伝達により回転可能であっ
て、少なくとも版表面に対し回転方向全てに計量幅方向
に対し均一に接触し、液計量時は可溶化した光導電層の
剥離を抑制防止する形状を有することが肝要である。本
発明に用いられる液計量具としては、軸回りに一定直径
の細いワイヤを螺旋状に巻付けたワイヤバ−、溝付きロ
−ル、プレ−ンバ−、軽量のゴムロ−ル等が挙げられ
る。液計量具を回転させる場合には、回転軸をある周速
で強制的に回転させても、また少なくとも版通過時にの
み回転する様にしても良い。液計量具の重量は計量精度
の向上からはある程度重い方が良いが、液計量具によっ
ては可溶化した光導電層の剥離が発現するため、０.２
〜６.０ｋｇが好ましい。この押付け重量は液計量具の
みの重量で充分にその範囲をカバ−出来るが、所望によ
り加圧ロ−ル等で液計量具全体を加圧しても、或はその
両端にニップ圧をかけて実質的な押付け重量を増加させ
ても良い。The liquid measuring tool in the liquid measuring step is rotatable by some kind of drive transmission with respect to the plate conveying direction, and makes uniform contact with the plate surface at least in the entire rotational direction in the measuring width direction. At the time of liquid measurement, it is important to have a shape for preventing peeling of the solubilized photoconductive layer. Examples of the liquid measuring device used in the present invention include a wire bar in which a thin wire having a constant diameter is spirally wound around an axis, a grooved roll, a plain bar, a lightweight rubber roll, and the like. When rotating the liquid measuring tool, the rotation shaft may be forcibly rotated at a certain peripheral speed, or may be rotated at least only when the plate passes. The weight of the liquid measuring device is preferably somewhat heavy in order to improve the measuring accuracy. However, depending on the liquid measuring device, the solubilized photoconductive layer may be peeled off.
~ 6.0 kg is preferred. The pressing weight can sufficiently cover the range by the weight of only the liquid measuring tool. However, if desired, the entire liquid measuring tool can be pressurized by a pressure roll or the like, or a nip pressure can be applied to both ends thereof. The substantial pressing weight may be increased.

【００１３】溶出液によって非画像部が可溶化された電
子写真平版印刷版は、可溶化光導電層除去工程に入り、
可溶化光導電層除去手段により可溶化した光導電層を除
去して次工程へ搬送される。可溶化光導電層除去工程で
除去された液状物は、その殆どが可溶化した光導電層及
び疲労溶出液なので、廃棄して再使用しないことが望ま
しい。また、少なくとも廃液に含まれる溶出液量分は新
液を補充して、循環液量の確保と溶出活性度の保持に努
めることが望ましい。The electrophotographic lithographic printing plate in which the non-image area has been solubilized by the eluate enters a solubilized photoconductive layer removing step,
The solubilized photoconductive layer is removed by the solubilized photoconductive layer removing means and transported to the next step. Most of the liquid material removed in the solubilized photoconductive layer removing step is a solubilized photoconductive layer and a fatigue elution liquid, and thus it is desirable that the liquid material is discarded and not reused. In addition, it is desirable to replenish at least the amount of the eluate contained in the waste liquid with a new solution to secure the amount of the circulating liquid and maintain the elution activity.

【００１４】可溶化光導電層除去手段は、少なくとも版
との接触面が滑らかな弾性材を印刷版の搬送路に沿わせ
た状態で配置し、版面と摺接させることにより版面の液
状物を取除くことが可能である。弾性材としては、エチ
レンプロピレンゴム、シリコ−ンゴム、ニトリルブタジ
エンゴム、ネオプレンゴム、ブチルゴム、及びテフロン
コ−トゴム等が挙げられ、ゴム硬度は３０〜７５度が良
い。可溶化光導電層除去手段の除去圧の調整は、ゴム硬
度、厚み、有効弾性長さ、及び接触部分の形状等によっ
て選定出来る。可溶化光導電層除去手段の設置に当たっ
ては、その下に搬送速度以上の周速で回転するバックア
ップロ−ルを設けたり、版先頭部が可溶化光導電層除去
手段を通過した直後に加圧する様、搬送不良の誘発を防
止するための何等かの機構を設けることが望ましい。[0014] The solubilized photoconductive layer removing means arranges an elastic material having at least a smooth contact surface with the plate along the conveying path of the printing plate, and slidably contacts the plate surface to remove the liquid material on the plate surface. It is possible to remove it. Examples of the elastic material include ethylene propylene rubber, silicone rubber, nitrile butadiene rubber, neoprene rubber, butyl rubber, and Teflon coat rubber, and the rubber hardness is preferably 30 to 75 degrees. Adjustment of the removal pressure of the solubilized photoconductive layer removing means can be selected according to rubber hardness, thickness, effective elastic length, shape of the contact portion, and the like. When installing the solubilized photoconductive layer removing means, a backup roll that rotates at a peripheral speed higher than the transport speed is provided below the solubilized photoconductive layer removing means, or pressurization is performed immediately after the top of the plate has passed the solubilized photoconductive layer removing means. Therefore, it is desirable to provide some mechanism for preventing the occurrence of the conveyance failure.

【００１５】可溶化光導電層除去工程にて可溶化した光
導電層等からなる除去物が除去された印刷版は、版上の
除去物を除去するために設けたリンス処理工程に於て、
少なくとも１回は循環する処理液でリンスし、更にリン
ス処理工程の最後に未使用処理液を圧搾空気と共にスプ
レ−方式により供給してリンスし、僅かながら残存する
除去物を完全に版上から除去する。循環する処理液は版
上に供給され版面をリンスした後に版上から除去され、
最終的に少なくともその一部を循環処理液を貯液する槽
に戻して循環再使用する。The printing plate from which the removed material such as the photoconductive layer solubilized in the solubilized photoconductive layer removing step has been removed is subjected to a rinsing process provided for removing the removed material on the plate.
Rinsing is performed at least once with the circulating treatment liquid, and at the end of the rinsing treatment step, the unused treatment liquid is supplied by spraying together with compressed air to be rinsed, and a small amount of the remaining residue is completely removed from the plate. I do. The circulating treatment liquid is supplied onto the plate and rinsed from the plate surface and then removed from the plate,
Finally, at least a part thereof is returned to the tank for storing the circulating treatment liquid, and is circulated and reused.

【００１６】リンス工程に於て、循環処理液は少なくと
も１回は版面に供給するが、リンスの最終工程に於ける
未使用処理液の供給に先だって供給しさえすれば、同一
及び／または異なった組成の循環する処理液を連続して
複数回供給しても、循環処理液の供給前或は後に最終供
給する未使用処理液と同一及び／または異なった組成の
未使用液を供給しても良い。また、版上に供給してリン
スした処理液は廃棄しても良いし、循環処理液貯液槽に
全て回収しても、或は未使用処理液供給部下方に循環処
理液貯液槽とは別の槽を設けておき、使用済み液を一時
貯留して循環処理液への補充や各部の洗浄等に利用して
も良い。In the rinsing step, the circulating treatment liquid is supplied to the printing plate at least once, but may be the same and / or different as long as it is supplied prior to the supply of the unused treatment liquid in the final step of rinsing. Regardless of whether the processing liquid having the composition circulating is continuously supplied a plurality of times, or an unused liquid having the same and / or different composition as the unused processing liquid finally supplied before or after the supply of the circulating processing liquid is supplied. good. Further, the processing liquid supplied and rinsed on the plate may be discarded, may be collected entirely in the circulating processing liquid storage tank, or may be disposed below the unused processing liquid supply unit. A separate tank may be provided, and the used liquid may be temporarily stored and used for replenishment to the circulating treatment liquid, cleaning of each part, and the like.

【００１７】リンス処理工程に於ける処理液供給方式
は、溶出液のそれと同様に従来公知の液供給機構、例え
ば循環処理液の供給にはシャワ−やディップ方式等が、
未使用処理液の供給にはスプレ−やシャワ−等が使用出
来るが、溶出処理と異なってリンス処理は処理液で速や
かに版上に残存する除去物を完全に除去し得なければな
らない。従って、給液は飛散が抑制出来る機構であれば
版面に直接供給しても良いし、処理液を圧縮して或は圧
縮空気と共に供給しても良い。更に、リンス処理を向上
させるため、特公平３−２７０３８号公報記載の溶出促
進部材をリンス処理機構に利用しても良い。The treatment liquid supply method in the rinsing treatment step is the same as that of the eluate, and a conventionally known liquid supply mechanism, for example, a shower or dipping method is used for supplying the circulating treatment liquid.
Spray or shower can be used to supply the unused processing solution. However, unlike the elution treatment, the rinsing treatment must be able to completely remove the removed matter remaining on the plate quickly with the processing solution. Therefore, the supply liquid may be supplied directly to the plate surface as long as the mechanism is capable of suppressing scattering, or the processing liquid may be compressed or supplied together with compressed air. Further, in order to improve the rinsing treatment, an elution promoting member described in Japanese Patent Publication No. 3-27038 may be used for the rinsing treatment mechanism.

【００１８】未使用処理液の供給は結果として廃液の増
大につながるから、最少量で最大のリンス効果をもたら
さなければならない。そのため、本発明に於ては未使用
処理液は圧搾空気と共にスプレ−による給液方式を採
る。電子写真平版印刷版の製版処理に於て、リンス工程
に高液圧シャワ−を用いることは特開平３−１０９５７
５号公報等に開示されているが、この方式では未使用処
理液を用いる積極的記載がなく、またシャワ−の複数ノ
ズル孔からの給液に於ては液圧は基本的に液送圧を意味
し、ノズル当たりの液吐出量はノズル径により可変であ
るが、箇々に加わる液圧は変化しないが、本発明に係わ
る未使用処理液は圧搾空気により給液するため、装置は
多少複雑になってもスプレ−箇々に液量・吐出圧の双方
を制御出来る利点を有する。Since the supply of unused processing liquid results in an increase in waste liquid, the minimum amount must provide the maximum rinsing effect. For this reason, in the present invention, an unused processing liquid adopts a liquid supply method by spraying together with compressed air. The use of a high hydraulic shower in the rinsing step in the process of making an electrophotographic lithographic printing plate is disclosed in
No. 5, etc., this system uses unused processing.
There is no positive description of using a physical solution, and in the case of liquid supply from multiple nozzle holes in a shower, the liquid pressure basically means the liquid sending pressure, and the amount of liquid discharged per nozzle is variable depending on the nozzle diameter. Although the hydraulic pressure applied to each part does not change, the unused processing liquid according to the present invention is supplied by compressed air, so that even if the apparatus becomes somewhat complicated, both the liquid amount and the discharge pressure are applied to each part. It has the advantage of being controllable.

【００１９】また、一般に非画像部アルカリ除去型電子
写真平版印刷版に於ける支持体の光導電層側表面は微細
な凹凸があり、その凹部に残存する除去物は処理液供給
量を増加させても除去効率の向上に即応しないが、圧搾
空気との供給により未使用処理液の消費量を低下させて
もリンス効果を向上させることが可能である利点を有す
る。スプレ−による液供給では、印刷版単位面積に対す
る供給量は２５〜２００ｍｌ/ｍ2の範囲が良く、更には
５０〜１５０ｍｌ/ｍ2が好ましい。また、給液時の圧搾
空気圧は２〜１０ｋｇ/ｃｍ2の範囲が良く、更に好まし
くは３〜７ｋｇ/ｃｍ2である。In general, the surface of the support in the non-image area alkali-removable electrophotographic lithographic printing plate on the side of the photoconductive layer of the support has fine irregularities, and the removed matter remaining in the concaves increases the supply amount of the processing solution. However, it does not immediately respond to the improvement of the removal efficiency, but has an advantage that the rinsing effect can be improved even if the consumption of the unused processing liquid is reduced by supplying the compressed air. Spray - in by the liquid supply, the supply amount with respect to the printing plate per unit area may have a range of 25~200ml / m 2, more preferably from 50 to 150 / m 2. Further, compressed air pressure at the liquid supply may in the range of 2 to 10 kg / cm 2, more preferably from 3~7kg / cm 2.

【００２０】給液量が２５ｍｌ/ｍ2を下回ると洗浄効果
が著しく低下するばかりか、時に液切れによる給液ムラ
が発生する恐れがあり、またミストになり易く、逆にそ
れが２００ｍｌ/ｍ2を越えると上記欠点は解消される
が、版上に未使用処理液が滞留して基本的に洗浄効果は
向上しないばかりか、廃液を増加させる結果となる。ま
た、圧搾空気圧が２ｋｇ/ｃｍ2を下回るとやはり洗浄効
果が半減する一方、１０ｋｇ/ｃｍ2を上回ると吐液はミ
ストになって洗浄効果が再び悪化するばかりでなく、吐
出孔と版面が近いと版が変形する可能性が高まり、圧搾
空気の作製の点で装置上の負担が大きくなる。When the supply amount is less than 25 ml / m 2 , not only the cleaning effect is remarkably reduced, but also there is a possibility that the supply may become uneven due to running out of the solution, and it is easy to become a mist. If it exceeds 2 , the above-mentioned disadvantages are eliminated, but the unused processing solution stays on the plate, so that not only the cleaning effect is not basically improved, but also the waste liquid is increased. When the compressed air pressure is lower than 2 kg / cm 2 , the cleaning effect is also halved. On the other hand, when the compressed air pressure is higher than 10 kg / cm 2 , the discharged liquid becomes mist and the cleaning effect is deteriorated again. The possibility that the plate is deformed increases, and the burden on the apparatus in producing compressed air increases.

【００２１】リンス処理で使用した処理液の少なくとも
１種類は、可溶化光導電層除去工程に於て可溶化光導電
層の除去に使用した可溶化光導電層除去手段に供給さ
れ、除去手段に付着した溶出液及び光導電層成分の洗浄
除去に利用出来る。洗浄除去液がリンス処理工程に於け
る循環処理液であれば、特に別個の貯留槽を設ける必要
はなく、循環槽から直接供給しても良い。また、洗浄除
去液専用貯留槽を設けるのであれば、少なくとも１種類
のリンス処理使用済み処理液と使用の有無に関係のなく
他の液、例えばリンス処理に用いる未使用処理液、希釈
液、各種洗浄剤及び／または光導電層成分分散剤含有液
等とをこの貯留槽で混合した混合液を供給しても良い。At least one type of treatment liquid used in the rinsing treatment is supplied to the solubilized photoconductive layer removing means used for removing the solubilized photoconductive layer in the solubilized photoconductive layer removing step, and is supplied to the removing means. It can be used for washing and removing the attached eluate and photoconductive layer components. If the cleaning and removing liquid is a circulating treatment liquid in the rinsing treatment step, there is no particular need to provide a separate storage tank, and it may be supplied directly from the circulating tank. In addition, if a dedicated storage tank for washing and removing liquid is provided, at least one type of rinsing treatment used treatment liquid and other liquids regardless of whether they are used, such as unused treatment liquids, diluting liquids, A mixed solution obtained by mixing a detergent and / or a liquid containing a photoconductive layer component dispersant in the storage tank may be supplied.

【００２２】洗浄除去液の供給は、印刷版が可溶化光導
電層除去手段通過中以外の任意の時間に行なっても良い
が、可溶化光導電層除去工程を印刷版が通過した直後か
ら一定時間後内に行なうことが望ましい。また、除去手
段に付着した除去物が以降の製版品質等に悪影響を及ぼ
さない範囲に於ては、連続製版中には洗浄を行なわなく
ても良いし、設定した洗浄時間内に次の製版物が可溶化
光導電層除去工程に搬入される場合は、洗浄途中で洗浄
除去液の供給を中断させる様にしておいても良い。洗浄
除去液供給時間及び１回の総供給液量は、液供給方式、
製版条件、及び除去物付着程度等によって裁定されれば
良く、供給（吐出）速度に変化を持たせたり断続供給し
ても良い。また、異なる洗浄除去液或はタイミングで複
数個の洗浄除去液供給手段から洗浄除去液を供給しても
良い。The cleaning and removing liquid may be supplied at any time other than when the printing plate is passing through the solubilized photoconductive layer removing means. It is desirable to do it within the time. In addition, as long as the removed material adhering to the removing means does not adversely affect the subsequent plate making quality, etc., washing may not be performed during continuous plate making, or the next plate making product may be set within the set washing time. In the case where is carried into the solubilized photoconductive layer removing step, the supply of the cleaning and removing liquid may be interrupted during the cleaning. The cleaning removal liquid supply time and the total supply liquid amount at one time are determined by the liquid supply method,
It suffices if it is determined according to the plate making conditions, the degree of adhesion of the removed matter, and the like, and the supply (discharge) speed may be varied or intermittently supplied. Further, the cleaning / removing liquid may be supplied from a plurality of cleaning / removing liquid supply units at different cleaning / removing liquids or at different timings.

【００２３】可溶化光導電層除去工程弾性部材の洗浄に
使用された処理液は、可溶化光導電層除去工程で除去手
段により印刷版上から除去された除去物と共に廃棄する
ことが望ましい。除去物は粘性が高く、廃棄系に於て固
着する可能性があるから、洗浄使用済み処理液はこの固
着を抑制する効果をも有する。洗浄除去液として使用さ
れた処理液で、本来循環再使用する処理液があれば、少
なくとも洗浄消費分に相当する補充液を補充することが
望ましい。The solubilized photoconductive layer removing step It is desirable that the treatment liquid used for cleaning the elastic member is discarded together with the removed matter removed from the printing plate by the removing means in the solubilized photoconductive layer removing step. Since the removed matter is highly viscous and may be fixed in a waste system, the used cleaning solution also has an effect of suppressing the fixing. If there is a processing liquid used as a cleaning and removing liquid that is originally circulated and reused, it is desirable to replenish at least a replenisher corresponding to the consumption of the cleaning.

【００２４】以上の様に、本発明の各工程の作用は、溶
出液供給工程で過剰の溶出液を版面に供給することで、
溶出液は版上を流動し更に一部は版端面より流下して溶
出の促進と液供給不良による溶出不良を抑制とを促し、
可溶化光導電層除去工程では可溶化光導電層除去手段に
より溶出液と可溶化した光導電層成分からなる除去物を
除去することにある。溶出過程を経た印刷版には少なく
とも１回は循環する処理液を供給してリンスし、版上の
残存除去物を洗浄除去するが、更にリンス工程最後に圧
搾空気と共にスプレ−方式にて未使用処理液でリンスし
て、版上に残存する循環処理液をも洗浄除去する。ま
た、リンス処理工程で使用した処理液等は所望により可
溶化光導電層除去手段の洗浄に用いることで、廃液と保
守管理の負担を軽減する電子写真平版印刷版の処理方法
を提供することが出来る。As described above, the operation of each step of the present invention is to supply an excess eluate to the plate surface in the eluate supply step.
The eluate flows on the plate, and a part of the eluate flows down from the edge of the plate to promote the dissolution and to suppress the dissolution failure due to the poor liquid supply,
In the solubilized photoconductive layer removing step, a solubilized photoconductive layer removing means is to remove an eluate and a removed material composed of the solubilized photoconductive layer component. The printing plate that has undergone the elution process is rinsed by supplying a circulating treatment liquid at least once to remove and remove the remaining residue on the plate, but is not used in a spray method together with compressed air at the end of the rinsing step. Rinse with the processing liquid to wash and remove the circulating processing liquid remaining on the plate. Further, it is possible to provide a method for processing an electrophotographic lithographic printing plate, which reduces the burden of waste liquid and maintenance by using the processing solution used in the rinsing process for cleaning the solubilized photoconductive layer removing means as desired. I can do it.

【００２５】次に本発明に係わる電子写真平版印刷版に
ついて説明する。本発明に於て処理する電子写真平版印
刷版は、導電性支持体上に光導電層を設けてなり、通常
の電子写真現像方式によりトナ−画像を形成し得るもの
である。電子写真平版印刷版に用いられる導電性支持体
としては、導電性表面を有するプラスチックシ−ト、溶
剤及び水不透過性及び導電性にした紙、またはアルミニ
ウム、亜鉛、銅−アルミニウム、銅−ステンレス、クロ
ム−銅等のバイメタル、クロム−銅−アルミニウム、ク
ロム−銅−ステンレス等のトライメタル等の金属板等を
基体とし、少なくとも光導電層を設ける面は親水化処理
が施された導電性支持体が挙げられる。また、それらの
厚みは０.０７〜２.０ｍｍ、より好ましくは０.１〜０.
５ｍｍが良い。これらの基体中でもアルミニウム板が好
適に使用される。このアルミニウム板は、アルミニウム
を主成分とし微量の異元素を含有しても良く、従来公知
・公用の素材を適宜使用することが出来る。Next, the electrophotographic lithographic printing plate according to the present invention will be described. The electrophotographic lithographic printing plate to be processed in the present invention has a photoconductive layer provided on a conductive support, and can form a toner image by a usual electrophotographic development system. Examples of the conductive support used in the electrophotographic lithographic printing plate include a plastic sheet having a conductive surface, a paper made solvent and water impermeable and conductive, or aluminum, zinc, copper-aluminum, copper-stainless steel. A metal plate such as a bimetal such as chromium-copper or a trimetal such as chromium-copper-aluminum or chromium-copper-stainless steel, and at least a surface on which a photoconductive layer is provided is a conductive support subjected to a hydrophilic treatment. Body. Further, their thickness is 0.07 to 2.0 mm, more preferably 0.1 to 0.1 mm.
5 mm is good. Among these substrates, an aluminum plate is preferably used. The aluminum plate may contain aluminum as a main component and contain a trace amount of a different element, and conventionally known and publicly available materials can be appropriately used.

【００２６】これら所望の表面性状を光導電層を設ける
支持体面に持せるため、公知の方法で砂目立てや陽極酸
化しても良い。砂目立て処理に先立って、所望により界
面活性剤またはアルカリ水溶液による脱脂処理する。砂
目立て処理方法には、機械的粗面化法、電気化学的粗面
化法、化学的表面選択溶解法等がある。機械的粗面化法
には、ボ−ル研磨法、ブラシ研磨法、ブラスト研磨法、
バフ研磨法等の公知の方法を用いることが出来る。また
電気化学的粗面化法には、塩酸或は硝酸電解液中で、交
流か直流により行なう方法がある。また、特開昭５４−
６３９０２号公報に開示の如く、両者を組合わせた方法
等も利用出来る。この様に粗面化された基体は、必要に
応じてアルカリエッチング処理及び中和処理して用い
る。In order to impart the desired surface properties to the surface of the support on which the photoconductive layer is provided, graining or anodic oxidation may be performed by a known method. Prior to the graining treatment, if necessary, a degreasing treatment with a surfactant or an aqueous alkali solution is performed. Graining methods include mechanical surface roughening, electrochemical surface roughening, and chemical surface selective dissolution. Mechanical surface roughening methods include ball polishing, brush polishing, blast polishing,
A known method such as a buff polishing method can be used. As the electrochemical surface roughening method, there is a method in which an alternating current or a direct current is used in a hydrochloric acid or nitric acid electrolyte. Also, Japanese Patent Application Laid-Open No.
As disclosed in JP-A-63902, a method combining the two can also be used. The substrate thus roughened is used after being subjected to an alkali etching treatment and a neutralization treatment as necessary.

【００２７】上記処理を施された基体は、その表面に酸
化皮膜を形成させるため陽極酸化処理される。陽極酸化
処理に用いられる電解質としては、硫酸、リン酸、しゅ
う酸等、或はそれらの混酸等が用いられ、その濃度は電
解質の種類によって適宜決定される。陽極酸化処理条件
は、用いる電解質により大幅に変化するため一概に特定
し得ないが、陽極酸化皮膜量は０.１０〜１０ｇ/ｍ2が
良く、更には１.０〜６.０ｇ/ｍ2の範囲が好適である。The substrate subjected to the above treatment is anodized to form an oxide film on its surface. As the electrolyte used in the anodizing treatment, sulfuric acid, phosphoric acid, oxalic acid or the like, or a mixed acid thereof is used, and the concentration is appropriately determined depending on the type of the electrolyte. The anodizing conditions vary greatly depending on the electrolyte used and cannot be specified unconditionally, but the amount of anodized film is preferably 0.10 to 10 g / m 2 , and more preferably 1.0 to 6.0 g / m 2. Is suitable.

【００２８】この様にして得られた導電性支持体上に所
望の電子写真光導電層を設けて、電子写真平版印刷版原
版が得られる。本発明に於て処理する電子写真平版印刷
版の光導電層には、少なくとも光導電性化合物を含有
し、以下に例示する公知の光導電性化合物を使用するこ
とが出来る。 ａ）米国特許第３１１２１９７号明細書等に記載のトリ
アゾ−ル誘導体、 ｂ）米国特許第３１８９４４７号明細書等に記載のオキ
サジアゾ−ル誘導体、 ｃ）特公昭３７−１６０９６号公報等に記載のイミダゾ
−ル誘導体、 ｄ）米国特許第３５４２５４４号、同３６１５４０２
号、同３８２０９８９号明細書、特公昭４５−５５５
号、同５１−１０９８３号、特開昭５１−９３２２４
号、同５５−１０８６６７号、同５５−１５６９５３
号、同５６−３６６５６号公報等に記載のポリアリ−ル
アルカン誘導体、 ｅ）米国特許第３１８０７２９号、同４２７８７４６号
明細書、特開昭５５−８８０６４号、同５５−８８０６
５号、同４９−１０５５３７号、同５５−５１０８６
号、同５６−８００５１号、同５６−８８１４１号、同
５７−４５５４５号公報等に記載のピラゾリン誘導体及
びピラゾロン誘導体、 ｆ）米国特許第３６１５４０４号明細書、特公昭４６−
３７１２号、同４７−２８３３６号、特開昭５４−８３
４３５号、同５４−１１０８３６号、同５４−１１９９
２５号公報等に記載のフェニレンジアミン誘導体、 ｇ）米国特許第３５６７４５０号、同３１８０７０３
号、同３２４０５９７号、同３６５８５２０号、同４２
３２１０３号、同４１７５９６１号、同４０１２３７６
号明細書、***国特許（ＤＡＳ）１１１０５１８号、特
公昭４９−３５７０２号、同３９−２７５７７号、特開
昭５５−１４４２５０号、同５６−１１９１３２号、同
５６−２２４３７号公報等に記載のアリ−ルアミン誘導
体、 ｈ）米国特許第３５２６５０１号明細書記載のアミノ置
換カルコン誘導体、 ｉ）米国特許第３５４２５４６号明細書記載のＮ,Ｎ-ビ
カルバジル誘導体、 ｊ）米国特許第３２５７２０３号明細書等に記載のオキ
サゾ−ル誘導体、 ｋ）特開昭５６−４６２３４号公報記載のスチリルアン
トラセン誘導体、 ｌ）特開昭５４−１１０８３７号公報等に記載のフルオ
レノン誘導体、 ｍ）米国特許第３７１７４６２号明細書、特開昭５４−
５９１４３号（米国特許第４１５０９８７号明細書に対
応）、同５５−５２０６３号、同５５−５２０６４号、
同５５−４６７６０号、同５５−８５４９５号、同５７
−１１３５０号、同５７−１０４１４４号、同５７−１
４８７４９号公報等に記載のヒドラゾン誘導体、 ｎ）米国特許第４０４７９４８号、同４０４７９４９
号、同４２６５９９０号、同４２７３８４６号、同４２
９９８９７号、同４３０６００８号明細書等に記載のベ
ンジジン誘導体、 ｏ）特開昭５８−１９０９５３号、同５９−９５５４０
号、同５９−９７１４８号、同５９−１９５６５８号、
同６２−３６６７４号公報等に記載のスチルベン誘導
体、 ｐ）特公昭３４−１０９６６号公報に記載のポリビニル
カルバゾ−ル及びその誘導体、 ｑ）特公昭４３−１８６７４号、同４３−１９１９２号
公報に記載のポリビニルビレン、ポリビニルアントラセ
ン、ポリ-２-ビニル-４-（４'-ジメチルアミノフェニ
ル）-５-フェニルオキサゾ−ル、ポリ-３-ビニル-Ｎ-エ
チルカルバゾ−ル等のビニル重合体、 ｒ）特公昭４３−１９１９３号公報等に記載のポリアセ
ナフチレン、ポリインデン、アセナフチレン／スチレン
共重合体等の重合体、 ｓ）特公昭５６−１３９４０号公報等に記載のピレン／
ホルムアルデヒド樹脂、エチルカルバゾ−ル／ホルムア
ルデヒド樹脂等の縮合樹脂、 ｔ）特開昭５６−９０８８３号、同５６−１６１５５０
号公報等に記載の各種トリフェニルメタンポリマ、 ｕ）米国特許第３３９７０８６号、同４６６６８０２
号、特公昭４９−４３３８号、同４９−１７５３５号、
特開昭６４−２０６１号、同６４−４３８９号、特開平
１−１４４０５７号、同１−１５３７５７号、同１−２
１７３６２号、同１−２２１４５９号、同１−２５２９
６７号、同１−２８５９５２号、同１−３１２５５１
号、同２−８２５６号、同２−１６５７０号公報等に記
載の無金属或は金属フタロシアニン及びナフタロシアニ
ン、及びその誘導体等がある。A desired electrophotographic photoconductive layer is provided on the thus obtained conductive support to obtain an electrophotographic lithographic printing plate precursor. The photoconductive layer of the electrophotographic lithographic printing plate to be processed in the present invention contains at least a photoconductive compound, and known photoconductive compounds exemplified below can be used. a) a triazole derivative described in U.S. Pat. No. 3,121,197, etc .; b) an oxadiazol derivative described in U.S. Pat. No. 3,189,447; c) an imidazo described in JP-B-37-1696. D) U.S. Pat. Nos. 3,542,544 and 3,615,402.
No. 382089, JP-B-45-555
No. 51-10983, JP-A-51-93224
No. 55-108667, No. 55-156953
E) Polyarylalkane derivatives described in JP-A-56-36656, e) U.S. Pat. Nos. 3,180,729 and 4,278,746, JP-A-55-88064, and JP-A-55-8806.
No. 5, No. 49-105537, No. 55-51086
Nos. 56-80051, 56-88141, 57-45545 and the like, f) U.S. Pat. No. 3,615,404, JP-B-46-415.
Nos. 3712 and 47-28336, JP-A-54-83
No. 435, No. 54-110836, No. 54-1199
25, etc. g) US Pat. Nos. 3,567,450 and 3,180,703
Nos. 3240597, 3658520, 42
Nos. 32103, 417,961 and 401,376
JP-A No. 11-105518, JP-B-49-35702, JP-A-39-27577, JP-A-55-144250, JP-A-56-119132, and JP-A-56-22437. Arylamine derivatives, h) amino-substituted chalcone derivatives described in US Pat. No. 3,526,501, i) N, N-bicarbazyl derivatives described in US Pat. No. 3,542,546, j) US Pat. No. 3,257,203, etc. K) styryl anthracene derivatives described in JP-A-56-46234; l) fluorenone derivatives described in JP-A-54-110837; m) U.S. Pat. No. 3,717,462; JP-A-54-
No. 59143 (corresponding to U.S. Pat. No. 4,150,987), Nos. 55-52063, 55-52064,
No. 55-46760, No. 55-85495, No. 57
No.-11350, No.57-104144, No.57-1
Hydrazone derivatives described in US Pat. No. 4,487,949; n) US Pat.
Nos. 4,265,990, 4,273,846, 42
No. 99897, No. 4306008, etc .; benzidine derivatives; o) JP-A-58-90953, JP-A-59-95540.
No. 59-97148, No. 59-195658,
Stilbene derivatives described in JP-B-62-36674 and the like; p) Polyvinyl carbazole and derivatives thereof described in JP-B-34-10966, and q) JP-B-43-18874 and 43-19192. Vinyl polymers such as polyvinyl vinylene, polyvinyl anthracene, poly-2-vinyl-4- (4′-dimethylaminophenyl) -5-phenyloxazole, poly-3-vinyl-N-ethylcarbazole, etc. r) Polymers such as polyacenaphthylene, polyindene, acenaphthylene / styrene copolymer described in JP-B-43-19193, and s) pyrene / polymers described in JP-B-56-13940.
Condensed resins such as formaldehyde resin and ethyl carbazole / formaldehyde resin; t) JP-A-56-90883 and JP-A-56-161550.
U) U.S. Pat. Nos. 3,970,086 and 4,666,802
No., JP-B-49-4338, JP-B-49-17535,
JP-A-64-2061, JP-A-64-4389, JP-A-1-144057, JP-A-1-153775, and 1-2
Nos. 17362, 1-222159 and 1-2529
No. 67, No. 1-285952, No. 1-312551
And metal-free or metal phthalocyanines and naphthalocyanines described in JP-A Nos. 2-8256 and 2-16570, and derivatives thereof.

【００２９】本発明の処理に係わる電子写真平版印刷版
に用いる光導電性化合物は、ａ）〜ｕ）に挙げた化合物
に限定されず、これまで公知の光導電性化合物を、また
所望により２種類以上を混合して用いることが出来る
が、本発明に用いる電子写真平版印刷版光導電層に於て
は光導電性を有する無金属或は金属フタロシアニン系顔
料が有利に用いられる。The photoconductive compound used in the electrophotographic lithographic printing plate according to the process of the present invention is not limited to the compounds described in a) to u), but may be any of the photoconductive compounds known so far and, if desired, 2 More than one kind can be mixed and used, but in the electrophotographic lithographic printing plate photoconductive layer used in the present invention, a metal-free or metal phthalocyanine pigment having photoconductivity is advantageously used.

【００３０】金属フタロシアニンとしては、フタロシア
ニン環の中心金属がリシウム、ベリリウム、ナトリウ
ム、マグネシウム、アルミニウム、カリウム、カルシウ
ム、チタン、バナジウム、クロム、マンガン、鉄、コバ
ルト、ニッケル、銅、亜鉛、モリブデン、ルテニウム、
ロジウム、パラジウム、銀、カドミウム、インジウム、
錫、アンチモン、バリウム、ハフニウム、オスミウム、
白金、水銀、及び鉛等、及びそれら金属に酸素或はハロ
ゲンが軸配位した錯塩が知られており、無金属フタロシ
アニンはそれらの金属の換わりに水素の入ったものであ
る。また、電子写真特性や分散性の改善を目的として、
フタロシアニン分子中のベンゼン環の水素がハロゲン、
シアノ基、ニトロ基、カルボキシル基、スルホン酸基、
アルコキシ基、アルキルアミノ基、アルキルアミド基、
置換若しくは未置換の脂肪族或は芳香族基等で置換され
た誘導体も知られている。更にこれらのフタロシアニン
のＸ線結晶回折の測定により、種々の異なった結晶形の
存在が知られている。As the metal phthalocyanine, the central metal of the phthalocyanine ring is lysium, beryllium, sodium, magnesium, aluminum, potassium, calcium, titanium, vanadium, chromium, manganese, iron, cobalt, nickel, copper, zinc, molybdenum, ruthenium,
Rhodium, palladium, silver, cadmium, indium,
Tin, antimony, barium, hafnium, osmium,
Platinum, mercury, lead, and the like, and complex salts in which oxygen or halogen is axially coordinated with these metals are known, and metal-free phthalocyanines are those containing hydrogen instead of these metals. Also, for the purpose of improving electrophotographic characteristics and dispersibility,
Hydrogen on the benzene ring in the phthalocyanine molecule is a halogen,
Cyano group, nitro group, carboxyl group, sulfonic acid group,
Alkoxy group, A Le Kiruamino group, alkylamide group,
Derivatives substituted with a substituted or unsubstituted aliphatic or aromatic group or the like are also known. Furthermore, the presence of a variety of different crystal forms is known from X-ray crystal diffraction measurements of these phthalocyanines.

【００３１】本発明に用いる電子写真平版印刷版光導電
層には、これらの内でα型、β型、γ型、π型、τ型、
χ型、及びε型等の無金属フタロシアニン、α型、β
型、γ型、ε型、及びη型等の銅フタロシアニン、α
型、β型等のチタニルフタロシアニン、及びハロゲノア
ルミニウムフタロシアニン等の金属フタロシアニンが好
ましく、Ｈｅ-Ｎｅレ−ザ、半導体レ−ザ等の光源の対
応して長波長領域に於いても優れた光感度を有するχ型
無金属フタロシアニン、及びチタニルフタロシアニンが
更に好適である。The electrophotographic lithographic printing plate photoconductive layer used in the present invention includes α-type, β-type, γ-type, π-type, τ-type,
Metal-free phthalocyanines such as χ type and ε type, α type, β
Type, γ-type, ε-type, and η-type copper phthalocyanine, α
And phthalocyanine such as halogenoaluminum phthalocyanine are preferable, and have excellent light sensitivity even in a long wavelength region corresponding to a light source such as a He-Ne laser or a semiconductor laser. Χ-type metal-free phthalocyanine and titanyl phthalocyanine are more preferable.

【００３２】本発明の処理に用いる電子写真平版印刷版
の光導電層には、結着樹脂を併用して皮膜性及び支持体
との接着性の向上を図る。印刷版として用いる際は、最
終的に画像部以外の光導電層を除去する必要があり、こ
の工程は光導電層の溶出液に対する溶解性とトナ−の溶
出液に対するレジスト性との相対的関係によって決定さ
れるため一概に表現出来ないが、結着樹脂としては、後
述の溶出液に可溶或は分散可能な高分子化合物が好まし
い。The photoconductive layer of the electrophotographic lithographic printing plate used in the process of the present invention is used together with a binder resin to improve the film properties and the adhesion to the support. When used as a printing plate, it is necessary to finally remove the photoconductive layer other than the image area, and this step is the relative relationship between the solubility of the photoconductive layer in the eluate and the resistability of the toner in the eluate. However, the binder resin is preferably a polymer compound that is soluble or dispersible in an eluate described later.

【００３３】結着樹脂の具体例としては、スチレン／無
水マレイン酸共重合体、スチレン／マレイン酸モノアル
キルエステル共重合体、メタクリル酸／メタクリル酸エ
ステル共重合体、スチレン／メタクリル酸／メタクリル
酸エステル共重合体、アクリル酸／メタクリル酸エステ
ル共重合体、スチレン／アクリル酸／メタクリル酸エス
テル共重合体、酢酸ビニル／クロトン酸共重合体、酢酸
ビニル／クロトン酸／メタクリル酸エステル共重合体等
のスチレン、メタクリル酸エステル、アクリル酸エステ
ル、酢酸ビニル、安息香酸ビニル等とアクリル酸、メタ
クリル酸、イタコン酸、クロトン酸、マレイン酸、無水
マレイン酸、フマル酸等のカルボン酸含有モノマ或は酸
無水物基含有モノマとの共重合体やメタクリル酸アミ
ド、ビニルピロリドン、フェノ−ル性水酸基、スルホン
酸基、スルホンアミド基、スルホンイミド基を有するモ
ノマを含有する共重合体、フェノ−ル樹脂、部分ケン化
酢酸ビニル樹脂、キシレン樹脂、ポリビニルブチラ−ル
等のビニルアセタ−ル樹脂を挙げることが出来る。Specific examples of the binder resin include styrene / maleic anhydride copolymer, styrene / maleic acid monoalkyl ester copolymer, methacrylic acid / methacrylic ester copolymer, styrene / methacrylic acid / methacrylic ester. Styrene such as copolymer, acrylic acid / methacrylic acid ester copolymer, styrene / acrylic acid / methacrylic acid ester copolymer, vinyl acetate / crotonic acid copolymer, vinyl acetate / crotonic acid / methacrylic acid ester copolymer , Methacrylic acid esters, acrylic acid esters, vinyl acetate, vinyl benzoate, etc. and acrylic acid, methacrylic acid, itaconic acid, crotonic acid, maleic acid, maleic anhydride, fumaric acid and other carboxylic acid-containing monomers or anhydride groups Copolymer with containing monomer, methacrylamide, vinyl pyrrolide Copolymers containing monomers having phenolic hydroxyl groups, sulfonic acid groups, sulfonamide groups, and sulfonimide groups, phenolic resins, partially saponified vinyl acetate resins, xylene resins, polyvinyl butyral, etc. A vinyl acetal resin can be used.

【００３４】これらの結着樹脂のなかで、酸無水物基或
はカルボキシル基を有するモノマ含有共重合体及びフェ
ノ−ル樹脂は、電子写真印刷版用光導電層とした場合の
電荷保持力が高く、従って有利に使用することが出来
る。酸無水物基を有するモノマ含有共重合体としては、
スチレンと無水マレイン酸との共重合体が好ましい。カ
ルボキシル基を有するモノマ含有共重合体としては、ス
チレンとマレイン酸モノエステルとの共重合体、アクリ
ル酸或はメタクリル酸とそれらのアルキルエステル、ア
リ−ルエステルまたはアラルキルエステルとの二元以上
の共重合体が好ましい。また、酢酸ビニルとクロトン酸
も良い。フェノ−ル樹脂中特に好ましいものとしては、
フェノ−ル、o-クレゾ−ル、m-クレゾ−ル、或はp-クレ
ゾ−ルとメタナ−ルまたはエタナ−ルとを酸性条件下で
縮合させたノボラック樹脂を挙げることが出来る。結着
樹脂は単独でも、或は２種以上を混合して用いても良
い。Among these binder resins, a monomer-containing copolymer having an acid anhydride group or a carboxyl group and a phenol resin have a charge retention ability when used as a photoconductive layer for an electrophotographic printing plate. High and therefore can be used advantageously. As a monomer-containing copolymer having an acid anhydride group,
A copolymer of styrene and maleic anhydride is preferred. Examples of the monomer-containing copolymer having a carboxyl group include a copolymer of styrene and maleic acid monoester, and a copolymer of acrylic acid or methacrylic acid and their alkyl esters, aryl esters or aralkyl esters. Coalescence is preferred. Also, vinyl acetate and crotonic acid are good. Particularly preferred among phenolic resins are:
Examples thereof include novolak resins obtained by condensing phenol, o-cresol, m-cresol, or p-cresol with methanal or ethanal under acidic conditions. The binder resin may be used alone or in combination of two or more.

【００３５】本発明の処理に用いる電子写真平版印刷版
の光導電層に於ける光導電性化合物と結着樹脂との混合
比は、所望の電子写真特性及び製版特性等の諸特性を満
足する様に決定すれば良いが、一般的に光導電性化合物
の含有量が少ないと低感度となるため、結着樹脂１００
重量部に対してそれが５重量部以上、より好ましくは１
５重量部以上を混合して使用することが好適である。し
かしながら、分散性、塗液安定性、塗布性等の液特性及
びより一層の電子写真特性の向上を期待出来ないこと等
から、通常４０重量部以上の使用は望ましくない。光導
電層膜厚は、薄いとトナ−現像に必要な電荷が帯電出来
ずにリ−クによる被りを誘発し、逆に厚いと溶出液の劣
化を促進するばかりか溶出の際にサイドエッチを誘引し
て良好な画像再現性が得られないため、０.１０〜３０
μｍが、より好ましくは０.５０〜１０μｍが、更に好
ましくは１.５〜６.０μｍが良い。The mixing ratio of the photoconductive compound and the binder resin in the photoconductive layer of the electrophotographic lithographic printing plate used in the processing of the present invention satisfies various properties such as desired electrophotographic properties and plate making properties. In general, the lower the content of the photoconductive compound, the lower the sensitivity.
5 parts by weight or more, more preferably 1 part by weight
It is preferable to use a mixture of 5 parts by weight or more. However, the use of 40 parts by weight or more is generally not desirable because liquid properties such as dispersibility, coating liquid stability and coatability, and further improvement in electrophotographic properties cannot be expected. When the thickness of the photoconductive layer is too small, the charge required for toner development cannot be charged, and the film will be covered by leakage. Conversely, when the thickness is too large, not only will the deterioration of the eluate be accelerated, but also side etching will occur during elution. 0.1 to 30 since good image reproducibility cannot be obtained due to attraction
μm, more preferably 0.50 to 10 μm, even more preferably 1.5 to 6.0 μm.

【００３６】本発明の処理に用いる電子写真平版印刷版
は、常法に従って光導電層を導電性支持体上に塗布して
得られる。光導電層の作製に当たっては、光導電層を構
成する成分を同一層中に含有させる方法、或は二層以上
の層に分離して含有させる方法、例えば下層（支持体
側）に易溶出性、強接着性の結着樹脂を配置し、上層に
良帯電性、易インク受理性の樹脂を配置したり、或は有
機光導電性化合物の含量を増加させる等、異なる層に分
離して用いる方法等が知られており、何れの方法にても
作製することが出来る。塗布液は、光導電層を構成する
各成分を適当な溶媒に溶解分散して作製するが、有機光
導電性化合物がフタロシアニン等の様に溶媒に不溶な成
分を用いる場合は、ボ−ルミル、ダイノミル、アトライ
タ−、ペイントシェィカ−等の分散機により平均粒径
０.４μｍ以下、より好ましくは０.２μｍ以下に分散し
て用いる。また、光導電層には必要に応じ、有機光導電
性化合物及び結着樹脂の他に光導電層の柔軟性、塗布表
面状態等の膜物性を改良する目的で、可塑剤、界面活性
剤、その他の添加物を添加できる。光導電層に使用する
添加剤は、有機光導電性化合物の分散時或は分散後に添
加することが出来る。The electrophotographic lithographic printing plate used in the treatment of the present invention can be obtained by coating a photoconductive layer on a conductive support according to a conventional method. In producing the photoconductive layer, a method of containing the components constituting the photoconductive layer in the same layer, or a method of separately containing two or more layers, for example, a method of easily dissolving into the lower layer (support side), A method in which a strong adhesive binder resin is disposed, and a resin having good chargeability and ink receptivity is disposed in the upper layer, or the content of an organic photoconductive compound is increased. Are known, and can be produced by any method. The coating solution is prepared by dissolving and dispersing each component constituting the photoconductive layer in an appropriate solvent.When the organic photoconductive compound uses a component insoluble in the solvent such as phthalocyanine, a ball mill, It is used by dispersing with an average particle size of 0.4 μm or less, more preferably 0.2 μm or less by a dispersing machine such as a dyno mill, an attritor, a paint shaker or the like. Further, if necessary, the photoconductive layer, in addition to the organic photoconductive compound and the binder resin, the flexibility of the photoconductive layer, for the purpose of improving the film physical properties such as coating surface state, a plasticizer, a surfactant, Other additives can be added. The additives used in the photoconductive layer can be added during or after the organic photoconductive compound is dispersed.

【００３７】この様にして作製した塗布液を回転塗布、
ブレ−ド塗布、ナイフ塗布、リバ−スロ−ル塗布、ディ
ップ塗布、ロッドバ−塗布、スプレ−塗布、エクストル
−ジョン塗布等公知の方法で支持体上に塗布乾燥して電
子写真平版印刷版を得ることが出来る。塗布液の溶媒と
しては、ジクロロメタン、ジクロロエタン等のハロゲン
化炭化水素類、メタノ−ル、エタノ−ル、２-プロパノ
−ル、１-ブタノ−ル、プロパンジオ−ル等のアルコ−
ル類、２-ブタノン、４-メチル-２-ペンタノン、シクロ
ヘキサノン等のケトン類、２-メトキシエタノ−ル、酢
酸２-メトキシエチル、２-（２-エトキシエトキシ）エ
タノ−ル等のグリコ−ルエ−テル類、オキソラン、オキ
サン、ジオキサン等の環状エ−テル類、蟻酸メチル、酢
酸エチル、酢酸プロピル、酢酸ブチル、乳酸エチル等の
エステル類等が挙げられる。塗液濃度（或は粘度）及び
使用する溶媒やその混合比は、塗布方式及び乾燥条件等
から適宜選択される。The coating solution thus prepared is spin-coated,
A known method such as blade coating, knife coating, reverse roll coating, dip coating, rod bar coating, spray coating, or extrusion coating is applied onto a support and dried to obtain an electrophotographic lithographic printing plate. I can do it. Examples of the solvent for the coating solution include halogenated hydrocarbons such as dichloromethane and dichloroethane, alcohols such as methanol, ethanol, 2-propanol, 1-butanol and propanediol.
Ketones such as 2-butanone, 4-methyl-2-pentanone and cyclohexanone, and glycol ethers such as 2-methoxyethanol, 2-methoxyethyl acetate and 2- (2-ethoxyethoxy) ethanol. -Cyclic ethers such as tels, oxolane, oxane and dioxane; esters such as methyl formate, ethyl acetate, propyl acetate, butyl acetate and ethyl lactate. The concentration (or viscosity) of the coating solution, the solvent to be used, and the mixing ratio thereof are appropriately selected from the coating method, drying conditions, and the like.

【００３８】本発明に於て使用する電子写真平版印刷版
は、公知の操作によってトナ−画像を形成させることが
出来る。則ち、暗所で実質的に一様に帯電させ、画像露
光により静電潜像を形成させ、しかる後にトナ−現像す
る。露光方法としては、キセノンランプ、タングステン
ランプ、蛍光灯等を光源とした反射画像露光、透明陽画
フィルムを通した密着露光や、レ−ザ光、発光ダイオ−
ド等による走査露光が挙げられる。走査露光に於ける光
源は、Ｈｅ-Ｎｅレ−ザ、アルゴンイオンレ−ザ、クリ
プトンイオンレ−ザ、ルビ−レ−ザ、ＹＡＧレ−ザ、窒
素レ−ザ、色素レ−ザ、エキサイマ−レ−ザ、ＧａＡｓ
／ＧａＡｌＡｓ、ＩｎＧａＡｓＰの様な半導体レ−ザ等
のレ−ザ光源を利用出来、または発光ダイオ−ド、液晶
シャッタを利用した走査露光（発光ダイオ−ドアレイ、
液晶シャッタアレイ等を用いたラインプリンタ型の光源
も含む）を行なっても良い。The electrophotographic lithographic printing plate used in the present invention can form a toner image by a known operation. That is, the toner is charged substantially uniformly in a dark place, an electrostatic latent image is formed by image exposure, and then toner development is performed. Exposure methods include reflection image exposure using a xenon lamp, tungsten lamp, fluorescent lamp, or the like as a light source, close contact exposure through a transparent positive film, laser light, or a light emitting diode.
Scanning exposure using a mask or the like. Light sources for scanning exposure include a He-Ne laser, an argon ion laser, a krypton ion laser, a ruby laser, a YAG laser, a nitrogen laser, a dye laser, and an excimer laser. Laser, GaAs
A laser light source such as a semiconductor laser such as / GaAlAs or InGaAsP can be used, or a scanning exposure using a light emitting diode or a liquid crystal shutter (light emitting diode array,
(Including a line printer type light source using a liquid crystal shutter array or the like).

【００３９】次に、上記静電潜像をトナ−によって現像
する。現像方法としては、乾式現像法（カスケ−ド現
像、磁気ブラシ現像、パウダクラウド現像）、液体現像
の何れも使用出来る。殊に液体現像法はトナ−微細な画
像を形成出来、再現性良い印刷版を作製するのに好適で
ある。更に、正現像によるポジ／ポジ現像や、適当なバ
イアス電圧の印加の下反転現像によるネガ／ポジ現像も
可能であるが、本発明に於ては走査露光の利点を活かす
ため、画像露光部に反転現像にてトナ−現像を行なう。
形成されたトナ−画像は公知の定着法、例えば加熱定
着、圧力定着、溶剤定着等により定着出来る。この様に
形成したトナ−画像をレジストとして、非画像部光導電
層を溶出液により除去して印刷版が作製出来る。Next, the electrostatic latent image is developed by toner. As the developing method, any of dry developing methods (cascade developing, magnetic brush developing, powder cloud developing) and liquid developing can be used. In particular, the liquid development method is suitable for producing a printing plate having good reproducibility, which can form a toner fine image. Further, positive / positive development by positive development and negative / positive development by reversal development under application of an appropriate bias voltage are also possible. However, in the present invention, in order to make use of the advantage of scanning exposure, the image exposure section is required. Toner development is performed by reversal development.
The formed toner image can be fixed by a known fixing method such as heat fixing, pressure fixing, and solvent fixing. Using the toner image thus formed as a resist, the non-image portion photoconductive layer is removed with an eluent to prepare a printing plate.

【００４０】電子写真平版印刷版の現像に用いるトナ−
は、少なくとも下記溶出液に対してレジスト性を有する
樹脂成分で構成されている必要がある。樹脂成分として
は、メタクリル酸、アクリル酸、及びこれらのエステル
等から成るアクリル樹脂、酢酸ビニル樹脂、酢酸ビニル
とエチレンまたは塩化ビニル等との共重合体、塩化ビニ
リデン樹脂、塩化ビニル樹脂、ポリビニルブチラ−ル等
のビニルアセタ−ル樹脂、ポリスチレン、スチレンとブ
タジエン、メタクリル酸エステル等との共重合物、ポリ
エチレン、ポリプロピレン及びその塩化物、ポリエチレ
ンテレフタレ−ト等のポリエステル樹脂、ポリアミド樹
脂、フェノ−ル樹脂、キシレン樹脂、アルキッド樹脂、
ビニル変性アルキッド樹脂、その他ワックス等が挙げら
れる。また、トナ−には現像或は定着等に悪影響を及ぼ
さない範囲で、色素や電荷制御剤を含有させることも出
来る。Toner used for developing electrophotographic lithographic printing plate
Must be composed of a resin component having a resist property against at least the following eluate. Examples of the resin component include methacrylic acid, acrylic acid, and acrylic resins composed of esters thereof, vinyl acetate resin, copolymers of vinyl acetate and ethylene or vinyl chloride, vinylidene chloride resin, vinyl chloride resin, polyvinyl butyral. Vinyl acetate resins such as polystyrene, polystyrene, copolymers of styrene with butadiene and methacrylate, polyethylene, polypropylene and its chlorides, polyester resins such as polyethylene terephthalate, polyamide resins, phenol resins , Xylene resin, alkyd resin,
Examples include vinyl-modified alkyd resins and other waxes. The toner may also contain a dye or a charge controlling agent as long as it does not adversely affect development or fixing.

【００４１】トナ−現像を完了した電子写真平版印刷版
は、次にアルカリ性溶出液により非画像部光導電層を溶
出し、続いて処理液で処理して版面をリンスした後、通
常保護ガム処理される。本発明に係わる溶出液として
は、アルカリ剤を含有し溶出液調製後の液ｐＨ付近に緩
衝能を有する水溶液が望ましい。含有させるアルカリ剤
としては、一般式ＳiＯ2/Ｍ2Ｏ（Ｍはアルカリ金属原子
を表わす）で表現される珪酸塩、アルカリ金属水酸化
物、リン酸や炭酸のアルカリ金属及びアンモニウム塩等
の無機アルカリ剤、エタノ−ルアミン類、エチレンジア
ミン、プロパンジアミン類、トリエチレンテトラミン、
モルホリン等の有機アルカリ剤、及びこれらの混合物を
用いることが出来るが、特に上記珪酸塩は、適当なアル
カリ強度と高ｐＨで強い緩衝能とを示すため、珪酸塩が
有利に使用される。The electrophotographic lithographic printing plate which has been subjected to the toner development is then eluted with a non-image area photoconductive layer with an alkaline eluent, and subsequently treated with a processing solution to rinse the plate surface, followed by a usual protective gum treatment. Is done. The eluate according to the present invention is desirably an aqueous solution containing an alkaline agent and having a buffer capacity around the pH of the eluate after preparation. Examples of the alkali agent to be contained include inorganic salts such as silicates, alkali metal hydroxides, alkali metal and ammonium salts of phosphoric acid and carbonic acid represented by the general formula SiO 2 / M 2 O (M represents an alkali metal atom). Alkaline agents, ethanolamines, ethylenediamine, propanediamines, triethylenetetramine,
Organic alkali agents such as morpholine and the like, and mixtures thereof can be used. In particular, the silicate is advantageously used because it exhibits a suitable alkali strength and a high buffering capacity at a high pH.

【００４２】本発明に係わる溶出液には更に、特開昭５
５−２５１００号公報記載のイオン性化合物、特開昭５
５−９５９４６号公報記載の水溶性カチオニックポリ
マ、特開昭５６−１４２５２８号公報記載の水溶性両性
高分子電解質、特開昭５８−７５１５２号公報記載の中
性塩、特開昭５８−１９０９５２号公報記載のキレ−ト
剤、特開平１−１７７５４１号公報記載の液粘度調整
剤、特開昭６３−２２６６５７号公報記載の防腐剤や殺
菌剤、及び各種界面活性剤、天然及び合成水溶性ポリマ
等の公知の成分を必要に応じ含有させることが出来る。
溶出液調製に用いる溶媒は、上記成分を安定して分散溶
解し得るものであれば特に限定されないが、軟水が更に
好ましくはイオン交換した水が有利に用いられる。ま
た、上記アルカリ剤を除いた溶出液組成を含有する溶液
には、上記成分をより安定的に混合分散させるため、実
質的に溶出が起こらない範囲で、溶出液有効成分と共に
有機溶剤を添加含有させても良い。The eluate according to the present invention is further disclosed in
Ionic compound described in JP-A-5-25100;
A water-soluble cationic polymer described in JP-A-5-95946; a water-soluble amphoteric polymer electrolyte described in JP-A-56-142528; a neutral salt described in JP-A-58-75152; Chelating agents described in Japanese Patent Application Laid-Open No. H11-177541, liquid viscosity modifiers described in Japanese Patent Application Laid-Open No. 1-177541, preservatives and bactericides described in Japanese Patent Application Laid-Open No. 63-226657, various surfactants, and natural and synthetic water-soluble agents Known components such as polymers can be contained as necessary.
The solvent used for the preparation of the eluate is not particularly limited as long as it can stably disperse and dissolve the above components. Soft water is more preferably used, and ion-exchanged water is advantageously used. In addition, in the solution containing the eluate composition excluding the above-mentioned alkali agent, in order to more stably mix and disperse the above components, an organic solvent is added together with the eluate active ingredient to the extent that the elution does not substantially occur. You may let it.

【００４３】本発明に係わる溶出液調製に用いる珪酸塩
の好ましい性状は、ＳiＯ2/Ｍ2Ｏ＝０.５〜４.０（モル
換算）が良く、更には１.０〜３.０の範囲が好ましい。
この珪酸塩には必要に応じ更にアルカリ金属水酸化物を
適量添加しても良い。溶出液中の珪酸（ＳiＯ2）に対す
るアルカリ金属酸化物（Ｍ2Ｏ）の総量の最終的なモル
比は、ＳiＯ2/Ｍ2Ｏ＝１.０〜２.６の範囲が良く、更に
は１.３〜２.２が好適である。また、溶出液中のアルカ
リ剤濃度は溶出速度を決定する主要因の一つであるが、
本発明に於ては１〜２０重量％、より好ましくは２〜１
０重量％が、更に好ましくは３〜８重量％が良い。溶出
液のｐＨは、１１.８〜１３.５、より好ましくは１２.
０〜１３.０が良く、多数枚通版等に際しては所望の補
充液を適時添加して、溶出活性度の向上を図ることが望
ましい。The preferred properties of the silicate used for the preparation of the eluate according to the present invention are SiO 2 / M 2 O = 0.5-4.0 (mole conversion), and more preferably 1.0-3.0. A range is preferred.
If necessary, an appropriate amount of an alkali metal hydroxide may be added to the silicate. The final molar ratio of the total amount of alkali metal oxide (M 2 O) to silicic acid (SiO 2 ) in the eluate is preferably in the range of SiO 2 / M 2 O = 1.0 to 2.6. 1.3 to 2.2 are preferred. Also, the concentration of the alkaline agent in the eluate is one of the main factors that determine the elution rate,
In the present invention, 1 to 20% by weight, more preferably 2 to 1% by weight.
0% by weight, more preferably 3 to 8% by weight. The pH of the eluate is 11.8 to 13.5, more preferably 12.
It is preferably 0 to 13.0, and it is desirable to add a desired replenisher in a timely manner when printing a large number of sheets to improve elution activity.

【００４４】溶出時間、則ち溶出液が光導電層と接触し
てから除去されるまでの時間は、短かければ溶出不良や
印刷経時に於ける地汚れを招き、長ければ画線細りや溶
出液中への光導電層成分の過度の流入を招く。溶出時間
は溶出液処方等によって特定されるが、２〜１５秒の範
囲、より好ましくは３〜１０秒の範囲で実施される。ま
た、溶出温度は溶出時間との関係で決定され、容易に液
温管理出来る通常範囲で所望の温度を設定できるが、低
いと溶出速度が緩慢となって印刷汚れを誘発し易く、逆
に高ければ溶出の寛容性が狭まるばかりか、溶出液の濃
厚化が進行して白粉化し易くなるため、液温は２０〜３
５℃が良く、より好ましくは２５〜３０℃の範囲内に特
定される。If the elution time, that is, the time from the contact of the eluate with the photoconductive layer to the removal thereof, is short, poor elution or soiling during printing is caused. Excessive inflow of the photoconductive layer component into the liquid is caused. The elution time is specified by the eluate formulation or the like, but is preferably in the range of 2 to 15 seconds, more preferably in the range of 3 to 10 seconds. In addition, the elution temperature is determined by the relationship with the elution time, and the desired temperature can be set in the normal range where the liquid temperature can be easily controlled. If the solution temperature is 20 to 3 not only because the tolerance of the elution is narrowed, but also the concentration of the eluate proceeds and it becomes easy to form white powder.
5 ° C is preferred, and more preferably specified in the range of 25 to 30 ° C.

【００４５】本発明に係わるリンス処理用処理液は、製
版処理される電子写真平版印刷版光導電層中の結着樹脂
等が再凝集しない様に液ｐＨが調整されたものであっ
て、少なくとも溶出液と可溶化した光導電層とが速やか
に液中に拡散溶解出来る性能を有るものである。また、
特に自動機にて多数枚の電子写真平版印刷版をより安定
的にリンス処理するためには、少なくとも各々の処理液
が多数枚製版中に液ｐＨの変動しないことが望ましく、
具体的には液ｐＨを１０.５以下に保持することが肝要
である。そのため、少なくとも７〜１０.５に酸解離指
数（pKa）を有する化合物（以下、少なくとも７〜１０.
５に酸解離指数（pka）を有する化合物を単に化合物と
記載する。）を最終的に含有させることが望ましい。The rinsing treatment solution according to the present invention is a solution whose pH has been adjusted so that the binder resin and the like in the electrophotographic lithographic printing plate photoconductive layer to be subjected to plate making do not re-aggregate. The eluate and the solubilized photoconductive layer have the ability to quickly diffuse and dissolve in the liquid. Also,
In particular, in order to stably rinse a large number of electrophotographic lithographic printing plates with an automatic machine, it is desirable that at least each processing solution does not fluctuate in the pH of the solution during the multiple plate making,
Specifically, it is important to maintain the pH of the solution at 10.5 or less. Therefore, a compound having an acid dissociation index (pKa) of at least 7 to 10.5 (hereinafter, at least 7 to 10.5).
Compounds having an acid dissociation index (pka) of 5 are simply referred to as compounds. ) Is desirably finally contained.

【００４６】化合物が複数の解離段を有する場合は、酸
解離指数の少なくとも一つが本発明に規定する範囲にあ
れば良い。本発明に規定される酸解離指数を有する化合
物の例としては、「化学便覧．基礎編II」日本化学会
編、昭和５９年改訂３版、丸善株式会社発行、II-３３
８〜II-３４２頁に記載されており、全て使用出来る。
化合物のうち、特にアスパラギン酸、グリシン、グルタ
ミン酸等のアミノ酸及びそれらの塩が好適である。これ
らの化合物は２種類以上を混合添加しても良い。また、
これらの化合物は適当な酸或は塩基性化合物との混合物
を用いても良いし、ｐＨ調整や溶解促進のために適当な
酸或は塩基性化合物を併用しても良い。特にこれらの化
合物を含有する溶液を後添加する場合は、そのｐＨを
６.０〜９.５、より好ましくは７.０〜８.０に調整して
添加することが望ましい。When the compound has a plurality of dissociation stages, it is sufficient that at least one of the acid dissociation indices falls within the range specified in the present invention. Examples of compounds having an acid dissociation index defined in the present invention include “Chemical Handbook: Basic Edition II”, edited by The Chemical Society of Japan, 3rd revised edition, 1984, published by Maruzen Co., Ltd., II-33
8-II-342, all of which can be used.
Among the compounds, amino acids such as aspartic acid, glycine, and glutamic acid and salts thereof are particularly preferable. Two or more of these compounds may be mixed and added. Also,
These compounds may be used in a mixture with an appropriate acid or basic compound, or may be used in combination with an appropriate acid or basic compound for pH adjustment or dissolution promotion. In particular, when a solution containing these compounds is added later, it is desirable to adjust the pH to 6.0 to 9.5, more preferably 7.0 to 8.0, and then add.

【００４７】化合物の添加は、化合物を含有しない液で
あっても製版初期は充分にリンス処理が行なえるため、
リンス用処理液として最初は化合物を含有しない液を用
い、後添加して最終的に循環処理液に含有させても良い
し、製版に先立って循環及びまたは未使用処理液に添加
しておいても良い。後添加の場合、添加開始は処理液の
ｐＨが８.５〜１０.５、より好ましくは９.５〜１０.０
の範囲が望ましい。また、特に版サイズが一定であれ
ば、非画像部の面積が大きく異ならない限り、水洗液の
ｐＨ上昇は通版枚数に関係するため、一定枚数毎に化合
物を添加することが出来る。先添加の場合に於ても、多
数枚通版中に処理液のｐＨ上昇に応じて更に添加出来
る。製版に先立ってこの化合物を添加しておく時は、化
合物単独で添加しても良いし、予め水に分散或は溶解さ
せたものを用いても良い。水溶液を用いる際には、少量
の有機溶剤をもって溶解を促進させても良い。本発明に
係わる処理液のｐＨは、少なくとも化合物含有処理液に
於ては７.５〜１０.５の範囲、より好ましくは８.０〜
１０.０の範囲に保持することが望ましい。The addition of the compound can be sufficiently performed in the initial stage of plate making even with a liquid containing no compound.
Initially, a solution containing no compound is used as the rinsing treatment liquid, and may be added later and finally contained in the circulation treatment liquid, or may be added to the circulation and / or unused treatment liquid prior to plate making. Is also good. In the case of post-addition, the pH of the treatment liquid is from 8.5 to 10.5, more preferably from 9.5 to 10.0 at the start of addition.
Is desirable. In particular, if the plate size is constant, unless the area of the non-image area is largely different, the increase in the pH of the washing liquid is related to the number of prints, and therefore, the compound can be added at every fixed number. Even in the case of prior addition, it can be further added in accordance with an increase in the pH of the processing solution during multi-sheet printing. When this compound is added prior to plate-making, the compound may be added alone, or a compound which has been dispersed or dissolved in water in advance may be used. When using an aqueous solution, dissolution may be promoted with a small amount of an organic solvent. The pH of the processing solution according to the present invention is at least in the range of 7.5 to 10.5, and more preferably 8.0 in the compound-containing processing solution.
It is desirable to keep it in the range of 10.0.

【００４８】処理液には更に防腐剤及び／または殺菌剤
を併用することが望ましい。処理液への添加量は、使用
する防腐剤及び／または殺菌剤の種類（殺菌力）、処理
液に混入する菌種及びその量、及び処理液交換期間等に
より調整する必要があるが、通常１０〜１００００ｐｐ
ｍの範囲で使用される。防腐剤及び／または殺菌剤は製
版期間中に循環及び未使用処理液の双方に添加されてい
ることが望ましいが、未使用処理液を供給して処理した
後に循環処理液に混合する処理方式に於ては、少なくと
も未使用処理液中に含有されていれば良い。It is desirable to further use a preservative and / or a bactericide in the treatment liquid. The amount added to the treatment liquid must be adjusted according to the type of preservative and / or bactericide to be used (bactericidal activity), the type and amount of bacteria mixed into the treatment liquid, and the treatment liquid replacement period. 10-10000pp
m. It is desirable that the preservative and / or disinfectant be added to both the circulating and unused processing solutions during the plate making period. In this case, it is sufficient that at least it is contained in an unused processing solution.

【００４９】非画像部光導電層を除去した電子写真平版
印刷版は、版面の対傷強度の向上及び非画像部不感脂化
等の目的で、保護ガム処理される。本発明に用いること
の出来る保護ガム液には、高分子化合物、親油性物質、
及び界面活性剤等を含み、これらの試剤は全て公知のも
のが利用出来る。The electrophotographic lithographic printing plate from which the non-image portion photoconductive layer has been removed is subjected to a protective gum treatment for the purpose of improving the scratch resistance of the plate surface and desensitizing the non-image portion. The protective gum solution that can be used in the present invention includes a polymer compound, a lipophilic substance,
And surfactants and the like, and all of these reagents can be known ones.

【００５０】[0050]

【実施例】本発明を実施例により更に具体的に説明する
が、本発明はその目的を逸脱しない限り、下記の実施例
に限定されるものではない。EXAMPLES The present invention will be described more specifically with reference to examples, but the present invention is not limited to the following examples unless departing from the object.

【００５１】実施例１ ［電子写真平版印刷版の作製］ＪＩＳ１０５０アルミニ
ウム（０.３ｍｍ厚）を６０℃、１０％水酸化ナトリウム
水溶液に浸漬し、アルミニウム溶解量が６ｇ/ｍ2になる
様にエッチングした。水洗後、３０％硝酸水溶液に１分
間浸漬して中和し、充分水洗した。次に、３.０％塩酸水
溶液中で３５Ａ/ｄｍ2、５０秒間電解粗面化を行ない、
５０℃、２０％硫酸水溶液中に浸漬して表面を洗浄した
後、水洗した。更に、２０％硫酸水溶液中で陽極酸化処
理を施して、表面にアルミニウム酸化物皮膜を形成さ
せ、水洗後乾燥することにより印刷版用支持体を作製し
た。この支持体表面処理面に、ペイントシェィカ−にて
１時間分散させた表１記載の光導電性組成物をエクスト
ル−ジョンコ−タで固形分塗布量４.４ｇ／ｍ2となる様
塗布後、９０℃、３分間乾燥して電子写真平版印刷版を
作製した。Example 1 [Preparation of an electrophotographic lithographic printing plate] JIS 1050 aluminum (0.3 mm thick) was immersed in a 10% aqueous sodium hydroxide solution at 60 ° C. and etched so that the aluminum dissolution amount became 6 g / m 2. did. After washing with water, it was immersed in a 30% aqueous nitric acid solution for 1 minute to neutralize, and sufficiently washed with water. Next, electrolytic surface roughening is performed in a 3.0% hydrochloric acid aqueous solution at 35 A / dm 2 for 50 seconds.
The surface was washed by immersion in a 20% aqueous sulfuric acid solution at 50 ° C., and then washed with water. Further, anodizing treatment was performed in a 20% sulfuric acid aqueous solution to form an aluminum oxide film on the surface, and the substrate was washed with water and dried to prepare a printing plate support. After applying the photoconductive composition shown in Table 1 dispersed in a paint shaker for 1 hour to the surface treated surface of the support with an extrusion coater so as to obtain a solid content of 4.4 g / m 2 , 90 C. for 3 minutes to prepare an electrophotographic lithographic printing plate.

【００５２】[0052]

【表１】 [Table 1]

【００５３】［トナ−現像］得られた電子写真平版印刷
版を４００ｍｍ×５５０ｍｍに裁断し、遮光して５０℃
で２時間加温した後に常温まで放冷した。この印刷版を
暗所にてコロトロンにより表面電位が約＋２８０Ｖにな
る様帯電させた後、半導体レ−ザ（７８０ｎｍ）を用い
て走査画像露光し、直ちに正電荷トナ−（三菱製紙(株)
製、ＬＯＭ-ＥＤ III）で液体反転現像を行ない、冷風乾
燥してトナ−分散媒を除去後、更にトナ−を熱定着して
光導電層上にトナ−画像を形成させた。以上のトナ−現
像済み印刷版について、下記に示す様な処理装置を用い
て製版処理を行なった。[Toner development] The obtained electrophotographic lithographic printing plate was cut into 400 mm x 550 mm, and shielded from light at 50 ° C.
And then allowed to cool to room temperature. This printing plate was charged in a dark place by a corotron so that the surface potential became about +280 V, and then exposed to a scanning image using a semiconductor laser (780 nm), and immediately charged with a positively charged toner (Mitsubishi Paper Corporation).
Was developed by LOM-ED III), dried with cold air to remove the toner dispersion medium, and then the toner was heat-fixed to form a toner image on the photoconductive layer. The above-described toner-developed printing plate was subjected to plate making processing using a processing apparatus as described below.

【００５４】［電子写真平版印刷版処理装置］図１に本
実施例で用いた電子写真平版印刷版処理装置を示す。本
処理装置の基本構成は、溶出液塗布ゾ−ンＡ、可溶化光
導電層除去廃棄ゾ−ンＢ、リンス処理ゾ−ンＣ、及び保
護ガム塗布ゾ−ンＤの４ゾ−ンからなり、印刷版は矢印
の方向から印刷版搬送ライン１に挿入することによりロ
−ル対に挟持されて自動搬送されると共に製版処理に供
される様になっている。[Electrophotographic lithographic printing plate processing apparatus] FIG. 1 shows an electrophotographic lithographic printing plate processing apparatus used in this embodiment. The basic configuration of this processing apparatus is composed of four zones: an eluent application zone A, a solubilized photoconductive layer removal waste zone B, a rinsing zone C, and a protective gum application zone D. When the printing plate is inserted into the printing plate transport line 1 in the direction of the arrow, the printing plate is nipped by a roll pair, is automatically transported, and is subjected to a plate making process.

【００５５】溶出液塗布ゾ−ンＡは更に、溶出液供給管
２７、整流板２８、及び給液ロ−ル１１ａからなる溶出
液供給部と、液計量具４７及びガイドロ−ル１３からな
る溶出液計量部とで構成される。液計量具４７には、ワ
イヤ巻付け部が中空の回転軸５１に、直径２５０μｍの
ステンレスワイヤ５０を螺旋状に稠密に巻付けたワイヤ
バ−を使用した。ワイヤバ−の回転軸５１へ強制駆動伝
達は行なわず、液計量時には並進する版との接触によっ
て回転が伝達される様になっている。溶出液１６は溶出
液供給管２７より整流板２８で整流されて給液ロ−ル１
１ａを介して版面に供給され、溶出液計量部で計量され
た溶出液は、循環溶出液貯液槽３上方に設置された液誘
導板７５上を流動して液落下孔７８より再び循環溶出液
貯液槽３に回収される。The eluate application zone A further comprises an eluate supply section comprising an eluate supply pipe 27, a current plate 28, and a supply roll 11a, and an eluate comprising a liquid measuring tool 47 and a guide roll 13. It consists of a liquid measuring unit. As the liquid measuring tool 47, a wire bar in which a stainless wire 50 having a diameter of 250 μm was spirally and densely wound around a rotary shaft 51 having a hollow wire winding portion. The forcible drive is not transmitted to the rotary shaft 51 of the wire bar, and the rotation is transmitted by contact with the plate that translates during liquid measurement. The eluate 16 is rectified by the rectifying plate 28 from the eluate supply pipe 27 and supplied to the supply roll 1.
The eluate supplied to the plate surface via 1a and measured by the eluate measuring section flows on the liquid guide plate 75 installed above the circulating eluate storage tank 3 and circulates again from the liquid drop hole 78. The liquid is collected in the liquid storage tank 3.

【００５６】また、循環溶出液貯液層３には液計量残液
量に相当する分を溶出補充液にて補充される。溶出補充
液１９の補充は、循環溶出液１６が一定量減量した後で
あって、印刷版が液計量具４７を通過直後、補充液貯液
槽７から補充ポンプ９４、配管１２２、及び補充液供給
管５４を経て液計量具４７に供給され、液計量具４７を
洗浄しながら循環溶出液１６と共に溶出液循環に供す
る。The circulating eluate storage layer 3 is replenished with an eluent replenisher in an amount corresponding to the residual amount of liquid measurement. The replenisher 19 is replenished after the circulating eluate 16 has been reduced by a certain amount, and immediately after the printing plate has passed the liquid meter 47, from the replenisher tank 7 to the replenisher pump 94, the pipe 122, and the replenisher. The eluate is supplied to the liquid measuring tool 47 through the supply pipe 54, and is supplied to the eluate circulation together with the circulating eluate 16 while washing the liquid measuring tool 47.

【００５７】可溶化光導電層除去廃棄ゾ−ンＢは、可溶
化光導電層除去手段である掻取りブレ−ド２２、バック
アップロ−ル２０、及びバックアップロ−ル清浄ブレ−
ド２３からなる可溶化光導電層除去部、掻取りブレ−ド
２２に循環処理液を供給する洗浄除去液供給管５２を含
む洗浄除去液供給手段、及び除去廃液一次貯留槽４で構
成される。掻取りブレ−ド２２の加圧は、可溶化した光
導電層の除去が最適に実施される範囲でバックアップロ
−ル２０との接触幅が最低になる様調整した。掻取りブ
レ−ド２２によって掻落とされた液は、除去廃液一次貯
留槽４に一時的に貯留されるが、バルブ１０４を解放す
ることで、配管１１４を経て除去廃液二次貯留槽９に廃
棄される様になっている。The waste zone B for removing the solubilized photoconductive layer comprises a scraping blade 22, a backup roll 20, and a backup roll cleaning blade which are means for removing the solubilized photoconductive layer.
Cleaning solution supply means including a cleaning removal solution supply pipe 52 for supplying a circulating treatment solution to the scraping blade 22, and a removal waste liquid primary storage tank 4. . The pressure of the scraping blade 22 was adjusted so that the contact width with the backup roll 20 was minimized in a range where the solubilized photoconductive layer was optimally removed. The liquid scraped off by the scraping blade 22 is temporarily stored in the removal waste liquid primary storage tank 4, but is discarded into the removal waste liquid secondary storage tank 9 via the pipe 114 by opening the valve 104. It is to be done.

【００５８】リンス処理ゾ−ンＣは、２本の循環処理液
供給管３７及び３８から循環処理液貯液槽５に貯留され
た循環処理液３６を直接版面に供給する循環処理液供給
部、及び搬送ロ−ル対３１及び３２に並列して配置さ
れ、圧搾空気と共に未使用処理液をスプレ−ガン３３か
ら吐出させて供給する未使用処理液供給部から構成され
ている。スプレ−ガン３３はノズル中心間が１０ｃｍ間
隔で四組装着されて、一組のスプレ−ガンの液吐出範囲
は版面に対し版搬送幅方向に於て１０ｃｍ以上に広がる
様に設定されて配置されている。また、ノズルは版搬送
面に対しどれも鉛直下方に向けてある。スプレ−ガン３
３作動中に発生する可能性のあるミスト等の飛散を防止
するため、版面方向に開かれたシェイド８３が装着され
ている。The rinsing treatment zone C is a circulating treatment liquid supply section for directly supplying the circulating treatment liquid 36 stored in the circulating treatment liquid storage tank 5 from the two circulating treatment liquid supply pipes 37 and 38 to the plate surface. And an unused processing liquid supply unit which is disposed in parallel with the transport roll pairs 31 and 32 and discharges and supplies an unused processing liquid from the spray gun 33 together with the compressed air. The spray guns 33 are mounted in four sets at intervals of 10 cm between the centers of the nozzles, and the liquid discharge range of one set of the spray guns is set and arranged so as to extend more than 10 cm in the width direction of the plate with respect to the plate surface. ing. All the nozzles are directed vertically downward with respect to the plate transport surface. Spray gun 3
3 In order to prevent scattering of mist or the like that may occur during operation, a shade 83 opened in the plate surface direction is mounted.

【００５９】スプレ−ガン３３の上方には、図２に示す
様に未使用処理液貯液層８８が配置されていて、配管８
６を経てスプレ−ガン３３に未使用処理液３９が供給さ
れる様になっている。スプレ−ガン３３に供給する圧搾
空気は、コンプレッサ８１によって圧縮した空気を減圧
弁１２５にて４ｋｇ/ｃｍ2に減圧して各スプレ−ガン３
３に供給した。未使用処理液３９の供給は、図示しない
未使用処理液供給制御手段により印刷版先頭部が搬送ロ
−ル対３１に到達してから、印刷版後端部が搬送ロ−ル
対３２を通過するまで吐出する様に設定されており、そ
の供給量はスプレ−ガン全部で約９０ｍｌ/ｍ2となる様
調整した。An unused treatment liquid storage layer 88 is disposed above the spray gun 33 as shown in FIG.
The unused processing liquid 39 is supplied to the spray gun 33 through the nozzle 6. The compressed air supplied to the spray gun 33 is reduced in pressure to 4 kg / cm 2 by the pressure reducing valve 125 to the air compressed by the compressor 81, and each spray gun 3
3. The supply of the unused processing liquid 39 is performed by the unused processing liquid supply control means (not shown) after the leading end of the printing plate reaches the transport roll pair 31 and then the rear end of the printing plate passes through the transport roll pair 32. And the supply amount was adjusted to be about 90 ml / m 2 for the entire spray gun.

【００６０】保護ガム液塗布ゾ−ンＤは、保護ガム液供
給管４５、表面粗面化液計量ロ−ル４３、給液ロ−ル４
０、及び下部ガイドロ−ル４１からなる保護ガム液供給
部、保護ガム液供給部を洗浄する洗浄液供給管６０を含
む洗浄手段、保護ガム液４６を貯留する保護ガム液貯液
槽８、及び余剰の保護ガム液を受液する保護ガム液一次
貯留槽６からなる。保護ガム液供給管４５から供給され
た保護ガム液は表面粗面化液計量ロ−ル４３によって計
量されて印刷版に塗布され、ロ−ル対４０及び４１によ
って延展され絞液される。The protective gum liquid application zone D includes a protective gum liquid supply pipe 45, a surface roughening liquid measuring roll 43, and a liquid supply roll 4.
0, a protective gum solution supply unit comprising a lower guide roll 41, a cleaning means including a cleaning solution supply pipe 60 for cleaning the protective gum solution supply unit, a protective gum solution storage tank 8 for storing the protective gum solution 46, and a surplus. Protective gum solution primary storage tank 6 for receiving the above-mentioned protective gum solution. The protective gum solution supplied from the protective gum solution supply pipe 45 is measured by a surface roughening solution measuring roll 43, applied to the printing plate, and extended and squeezed by roll pairs 40 and 41.

【００６１】［製版用処理液］製版処理には、表２から
表５に記載の組成を有する処理液を用いた。尚、未使用
処理液としては表４記載の循環処理液組成の未使用液を
充てた。また、溶出補充液及び未使用処理液は、使用減
量に応じて適宜夫々の貯液層に補充した。尚、溶出時間
は版搬送速度と可溶化光導電層除去部搬入直前の光導電
層の可溶化との関係から調整した。[Processing solution for plate making] In the plate making process, a processing solution having a composition shown in Tables 2 to 5 was used. In addition, as the unused treatment liquid, an unused liquid having a circulating treatment liquid composition shown in Table 4 was used. In addition, the elution replenisher and the unused processing solution were appropriately replenished to their respective reservoirs in accordance with the weight loss. The elution time was adjusted from the relationship between the plate transport speed and the solubilization of the photoconductive layer immediately before being carried into the solubilized photoconductive layer removing section.

【００６２】[0062]

【表２】 [Table 2]

【００６３】[0063]

【表３】 [Table 3]

【００６４】[0064]

【表４】 [Table 4]

【００６５】[0065]

【表５】 [Table 5]

【００６６】［製版処理及び評価］以上の処理装置及び
各処理液を用いて、搬送速度４ｍ／分、及び複版速度６
０秒／版なる処理条件で、印刷版長辺を搬送方向に５０
版連続製版した後に掻取りブレ−ド洗浄し、１時間製版
を中断してからまた連続製版する繰り返し条件で製版し
た。掻取りブレ−ド２２の洗浄は、初期設定の連続製版
最後の印刷版後端部が掻取りブレ−ド２２を通過してか
ら２秒後に、送液ポンプ９５の作動により循環処理液貯
液槽５から洗浄除去液供給管５５を経て、循環処理液３
６を実質的に１５秒間掻取りブレ−ドの除去物付着面に
供給して洗浄した。[Plate making process and evaluation] Using the above-mentioned processing apparatus and each processing solution, a transport speed of 4 m / min and a double plate speed of 6
Under the processing condition of 0 seconds / plate, the long side of the printing plate
After the continuous plate making, the blade was washed with a scraping blade, and the plate making was interrupted for 1 hour, followed by plate making under the repeated conditions of continuous plate making. The cleaning of the scraping blade 22 is carried out two seconds after the trailing end of the last printing plate passed through the scraping blade 22 in the initial setting of the continuous plate-making, and the circulation pump 95 is operated by the operation of the liquid feeding pump 95. The circulating treatment liquid 3 is supplied from the tank 5 through the cleaning / removal liquid supply pipe 55.
6 was applied to the scraped blade attachment surface for substantially 15 seconds for cleaning.

【００６７】以上の製版条件で連続製版したところ、少
なくとも数百版製版後には光導電層成分であるフタロシ
アニンが相当量流入して循環処理液はかなり蒼く、循環
処理液供給部搬送ロ−ル対３１から搬出された印刷版非
画像部、特に端部は僅かながら循環処理液が絞り切れず
に残存するために青味がかって観えたが、未使用処理液
供給部から搬出された時点では青味もとれて初期製版物
と遜色ない印刷版が得られた。更に製版を続行して計２
０００版製版したところ、全ての製版物に付き溶出不良
は勿論版面洗浄不良は観られなかった。また、製版開始
１０版目、５００版目、１０００版目、及び２０００版
目の製版物について印刷性を検討したところ、通常印刷
では勿論印刷終了後に５０℃で加温した印刷版を再度印
刷しても地汚れの発生も観られず全ての印刷版に於て良
好な印刷物が得られた。When plate making was performed continuously under the above plate making conditions, after at least several hundred plate making, a considerable amount of phthalocyanine, which is a photoconductive layer component, flowed in, and the circulating treatment liquid was quite dark. The non-image portion of the printing plate carried out from 31, particularly the end portion, was slightly bluish because the circulating treatment liquid remained without being squeezed, but was blue at the time of being carried out from the unused treatment liquid supply unit. As a result, a printing plate was obtained which was comparable in taste to the initial plate. Continue plate making for a total of 2
When the stencil plate was prepared for 000 plates, no leaching was found on all the plate-making products, and of course, no plate cleaning failure was observed. In addition, the printability of the plate-making products of the 10th plate, the 500th plate, the 1000th plate, and the 2000th plate starting from the platemaking start was examined. However, no generation of background stain was observed, and good printed matter was obtained in all printing plates.

【００６８】２０００版製版後の循環処理液のｐＨは約
９.５で、この液に未現像の電子写真平版印刷版原版を
３０秒間浸漬したところ、印刷版光導電層表面の光沢度
が僅かに変化するだけで、光導電層は殆ど溶解されなか
った。また、保護ガム液は淡い青色に変化したものの液
ｐＨは殆ど変化なく、濁りや不溶物等の発生もなかっ
た。更に、循環溶出液貯液槽３に貯留されている循環溶
出液１６だけを同量の未使用液に交換して同条件で更に
製版を続行したが、特に問題なく製版出来た。The pH of the circulating solution after the 2,000-plate plate making was about 9.5. When the undeveloped electrophotographic lithographic printing plate precursor was immersed in this solution for 30 seconds, the glossiness of the printing plate photoconductive layer surface was slightly reduced. , The photoconductive layer was hardly dissolved. Although the protective gum solution turned pale blue, the solution pH hardly changed, and no turbidity or insoluble matter was generated. Further, only the circulating eluate 16 stored in the circulating eluate storage tank 3 was replaced with the same amount of unused liquid, and plate making was further continued under the same conditions, but plate making could be performed without any particular problem.

【００６９】比較例１ 図１のリンス処理ゾ−ンＣ未使用処理液供給部に於てス
プレ−ガンを含む未使用処理液供給機構の替わりに、図
３に示す様な循環処理液供給管４２にて再度循環処理液
を供給する機構の処理装置を用いて製版した他は、実施
例１と同様の処理液及び製版条件で製版した（実施例１
に於て消費した未使用処理液は相当量を適宜循環処理液
貯液槽５に補充した）。その結果、数百版製版すると循
環処理液供給部から搬出された印刷版非画像部は循環処
理液が絞り切れずに残存するために青味がかり、製版が
千版を越えると保護ガム液まで青変して液ｐＨは上昇し
て濁りが発生したため、保護ガム液を交換せざるを得な
かった。更に製版を続行して計２０００版製版し、実施
例１と同条件で製版物を選定して印刷性を検討したとこ
ろ、通常印刷では２０００版目に、加温した印刷版では
１０００版目にも、特に循環処理液が多く版上に残った
搬送方向両端を中心に地汚れが発生して、良好な印刷物
が得られなかった。COMPARATIVE EXAMPLE 1 In the rinsing treatment zone C unused treatment liquid supply section of FIG. 1, a circulating treatment liquid supply pipe as shown in FIG. 3 is used instead of an unused treatment liquid supply mechanism including a spray gun. Plate making was performed under the same processing liquid and plate making conditions as in Example 1 except that plate making was performed using a processing apparatus having a mechanism for supplying a circulation processing liquid again at 42 (Example 1).
A considerable amount of the unused processing liquid consumed in (1) was appropriately replenished to the circulation processing liquid storage tank 5). As a result, when making a few hundred plates, the non-image portion of the printing plate carried out from the circulating solution supply unit becomes bluish because the circulating solution remains without being squeezed out. Since the solution turned blue and the solution pH rose and turbidity occurred, the protective gum solution had to be replaced. Further, the plate making was continued to make a total of 2000 plates, and the plate making was selected under the same conditions as in Example 1 to examine the printability. In particular, soiling occurred at both ends in the transport direction, in particular, where a large amount of the circulating treatment liquid remained on the plate, and good printed matter was not obtained.

【００７０】実施例２ 未使用処理液供給条件を下記表７に記載の様に変更した
他は、実施例１と同様の製版条件で製版した。また、未
使用処理液を下記表６記載の組成に変更し、比較例１で
２０００版製版して蒼着した循環処理液を用い、溶出
液、溶出補充液、及び保護ガム液は実施例１と同一の処
理液を用いた。Example 2 Plate making was performed under the same plate making conditions as in Example 1 except that the supply conditions of the unused processing solution were changed as shown in Table 7 below. Further, the unused treatment liquid was changed to the composition shown in Table 6 below, and a circulating treatment liquid which had been subjected to plate making in 2000 in Comparative Example 1 was used, and the eluate, the elution replenisher, and the protective gum solution were used in Example 1. The same processing solution was used.

【００７１】[0071]

【表６】 [Table 6]

【００７２】[0072]

【表７】 [Table 7]

【００７３】製版処理の結果、供給空気圧（圧搾空気
圧）が低く２ｋｇ/ｃｍ2以下（製版処理番号１及び２）
であると、未使用処理液の吐出速度が低くなるためその
一部はミストとなって浮遊飛散し易くなる一方、別の一
部はスプレ−ガンのノズル孔から液滴となって滴り落
ち、これが延展して結果として版面の青味は消減するも
のの、スプレ−方式によるリンスの効果はあまり得られ
なかった。特に、供給空気圧が１.５ｋｇ/ｃｍ2（製版
処理番号１;本発明外）の場合は、ミストの発生量の増
大するし、処理液の版面への衝突速度が低いためか、印
刷版非画像部支持体表面の微少な凹部に残存する可溶化
光導電層成分は除去し切れなかった。As a result of the plate making process, the supply air pressure (pressing air pressure) is low and 2 kg / cm 2 or less (plate making process numbers 1 and 2).
In that case, the discharge speed of the unused processing liquid is reduced, so that a part of the processing liquid becomes mist and easily floats and scatters, while another part drops as a droplet from the nozzle hole of the spray gun, As a result, the blue tint of the printing plate disappeared, but the rinsing effect by the spray method was not obtained much. In particular, when the supply air pressure is 1.5 kg / cm 2 (plate making process number 1; outside the present invention), the generation amount of mist is increased, and the collision speed of the processing solution against the plate surface is low. The solubilized photoconductive layer component remaining in the minute concave portions on the surface of the image portion support could not be completely removed.

【００７４】供給空気圧を少なくとも３.０ｋｇ/ｃｍ2
（製版処理番号３〜５;本発明）以上にすると、殆どミ
スト及びノズル孔の液滴は発生しなくなり、また上記微
少凹部の可溶化光導電層成分残渣も除去出来て、循環処
理液が光導電層成分で汚染していても非画像部に青味の
ない良好な印刷版が得られた。供給空気圧を更に高めて
１１.０ｋｇ/ｃｍ2（製版処理番号６;本発明外）にする
と、版面清浄効果は問題ないものの高圧化による除去効
果の向上は認められなかった。また、処理液の吐出速度
が高くなり過ぎる関係上、版面からの跳ね返りによる可
溶化光導電層成分を含んだ処理液が飛散して好ましくな
かった。The supply air pressure should be at least 3.0 kg / cm 2
(Plate making process numbers 3 to 5; the present invention) Above, almost no mist and droplets in the nozzle hole are generated, and the residue of the solubilized photoconductive layer component in the above minute recesses can be removed. A good printing plate having no bluish color in the non-image area was obtained even when the printing plate was contaminated with the conductive layer component. When the supply air pressure was further increased to 11.0 kg / cm 2 (plate making process No. 6; outside the present invention), the plate surface cleaning effect was not a problem, but no improvement in the removal effect by increasing the pressure was observed. Further, since the discharge speed of the processing liquid is too high, the processing liquid containing the solubilized photoconductive layer component due to the rebound from the plate surface is not preferable.

【００７５】また、供給空気圧を４.０ｋｇ/ｃｍ2に固
定して未使用処理液の供給量を変更したところ、供給量
が２０ｍｌ/ｍ2（製版処理番号７;本発明外）では吐出
液はミストになって周囲に浮遊し、版面には斑点状にし
か付着しないために給液ムラとなり、非画像部微少凹部
の可溶化光導電層成分残渣は勿論循環処理液よる版面の
青味もあまり除去出来なかった。供給量を２５ｍｌ/ｍ2
（製版処理番号８;本発明）に増加されると、少しくミ
ストは発生するものの給液ムラは解消されて、僅かに版
面の青味残るものの殆どが洗浄除去された。When the supply air pressure was fixed to 4.0 kg / cm 2 and the supply amount of the unused processing liquid was changed, the discharge liquid was not used when the supply amount was 20 ml / m 2 (plate making process number 7; outside the present invention). floating around become mist, the plate surface becomes liquid supply unevenness in order not adhere only patchy, solubilizing photoconductive layer component residues in the non-image area small recesses course bluish plate surface by circulating the processing solution I could not remove much. Supply amount 25ml / m 2
When the number was increased to (plate making process number 8; the present invention), mist was slightly generated, but the liquid supply unevenness was eliminated, and most of the plate surface with a slight bluish color was washed away.

【００７６】印刷版が少なくとも搬送ロ−ル対３１及び
３２の双方に挟持されている間は版面はほぼ水平に保持
されるから、逆に供給量が少なくとも２５０ｍｌ/ｍ
2（製版処理番号１３;本発明外）になると、供給された
処理液は版搬送方向両端部から流落する前に相当量が版
面を被覆してしまい、その被覆液により版界面に於ける
処理液の衝突速度はかなり削がれるためか、反って微少
凹部の可溶化光導電層成分残渣は除去され難かった。ま
た、版面からの跳ね返りによる可溶化光導電層成分を含
んだ処理液が飛散して好ましくなかった。Since the printing plate is held substantially horizontal while at least the printing plate is sandwiched between the transport roll pairs 31 and 32, the supply amount is at least 250 ml / m.
2 (plate making process number 13; outside the present invention), a considerable amount of the supplied processing solution coats the plate surface before flowing down from both ends in the plate transport direction. Perhaps because the collision speed of the liquid was considerably reduced, it was difficult to remove the residual solubilized photoconductive layer components in the minute concave portions. Further, the processing solution containing the solubilized photoconductive layer component due to the rebound from the plate surface scatters, which is not preferable.

【００７７】これらに反し、供給空気圧が少なくとも
３.０〜９.０ｋｇ/ｃｍ2であってかつ未使用処理液供給
量が少なくとも５０〜２００ｍｌ/ｍ2の範囲（製版処理
番号３〜５、８〜１２;本発明）にあれば、表７からも明
らかな様にミストや版面からの飛沫、或は処理液供給不
良も誘発せず、満足する製版結果が得られた。また、こ
れらの８種の製版物を夫々実施例１と同条件で印刷した
ところ、地汚れ等の印刷欠陥をもたらすことなく全ての
印刷版に於て良好な印刷物が得られた。On the contrary, the supply air pressure is at least 3.0 to 9.0 kg / cm 2 and the supply amount of the unused processing liquid is at least 50 to 200 ml / m 2 (plate making process numbers 3 to 5, 8 ~ 12; the present invention), as evident from Table 7, did not induce mist, droplets from the plate surface, or poor supply of the processing solution, and satisfactory plate making results were obtained. When these eight types of plate-making products were printed under the same conditions as in Example 1, good printed materials were obtained in all printing plates without causing printing defects such as background stain.

【００７８】比較例２ 実施例１で用いた処理装置のリンス処理ゾ−ンＣに於て
循環処理液の供給を止め、未使用処理液供給機構である
スプレ−ガンだけを作動させて製版した他は、実施例１
と同様の処理液及び製版条件で製版した。掻取りブレ−
ドで掻き落とせなかった可溶化光導電層成分は、基本的
に循環処理液供給部では除去されずに未使用処理液供給
部に搬入され、未使用処理液だけでは印刷版非画像部支
持体表面の微少な凹部の可溶化光導電層成分すらかなり
が版面に滞留する処理液中に溶解拡散するものの、その
分処理液が蒼染するために搬送ロ−ル３２によって絞液
されても版面の青味は除去し切れなかった。Comparative Example 2 In the rinsing zone C of the processing apparatus used in Example 1, the supply of the circulating processing liquid was stopped, and only the spray gun, which is an unused processing liquid supply mechanism, was operated to make a plate. Others are described in Example 1.
Plate-making was carried out under the same processing solution and plate-making conditions as described above. Scraping blur
The components of the solubilized photoconductive layer that could not be scraped off are not removed by the circulating processing liquid supply unit, but are carried into the unused processing liquid supply unit, and the printing plate non-image area support is used only with the unused processing liquid. Even the components of the solubilized photoconductive layer in the minute recesses on the surface considerably dissolve and diffuse in the processing solution remaining on the plate surface. Could not be completely removed.

【００７９】そこで、上記版面の青味残りを解消するた
め、洗浄効率やミストの発生、周囲の汚染等を無視して
スプレ−ガン供給空気圧及び／または処理液供給量を増
加させたところ、供給空気圧はコンプレッサの能力上限
まで高めたが実施例２で得た結果と同様にリンス効果に
殆ど寄与しなかった。また、処理液供給量を増加させて
行くに付随してリンス効果も向上するものの、５００ｍ
ｌ/ｍ2供給してもスプレ−ガン吐出液が交錯する版上の
部分や版搬送方向両端部に於ては筋状に少しく青味が残
り、完全には除去し切れなかった。In order to eliminate the bluish residue on the printing plate, the air pressure of the spray gun and / or the supply amount of the processing liquid were increased while ignoring the cleaning efficiency, generation of mist, and contamination of the surroundings. The air pressure was increased to the upper limit of the capacity of the compressor, but hardly contributed to the rinsing effect as in the case of the result obtained in Example 2. In addition, although the rinsing effect is improved with an increase in the processing liquid supply amount, 500 m
Even when 1 / m 2 was supplied, a slight blue color remained in a streak-like portion on the plate where the spray gun discharge liquid intersects and at both ends in the plate transport direction, and the removal was not completely completed.

【００８０】実施例３ 実施例１で用いた処理装置に於て、可溶化光導電層除去
手段として用いた掻取りブレ−ド２２の替わりにゴム硬
度３５度ＮＢＲスクイズロ−ル（このロ−ル回転軸には
直接駆動が伝達されない）を装着してロ−ル両端を加圧
した。また、リンス処理ゾ−ン未使用処理液供給部スプ
レ−ガンのノズルは、内側二組が実施例１と同様に鉛直
下方に向け、外側二組は夫々版搬送方向端部に向けて７
度傾斜させて、更に版搬送幅方向に対し吐出液が版面全
てを被覆する様に設定配置した。未使用処理液としては
水道水を用い、実施例１と同様の処理条件で製版した。Example 3 In the processing apparatus used in Example 1, instead of the scraping blade 22 used as the solubilized photoconductive layer removing means, a rubber hardness of 35 degrees NBR squeeze roll (this roll) was used. The drive is not directly transmitted to the rotating shaft), and both ends of the roll are pressurized. As for the nozzles of the spray liquid for the rinsing treatment zone, the inner two sets are directed vertically downward as in the first embodiment, and the outer two sets are directed toward the ends in the plate transport direction.
The discharge liquid covers the entire plate surface with respect to the plate conveyance width direction. Plate making was performed under the same processing conditions as in Example 1 using tap water as an unused processing liquid.

【００８１】以上の製版条件で連続製版したところ、少
なくとも未使用処理液供給部から搬出された時点では青
味もとれて初期製版物と遜色ない印刷版が得られた。製
版を続行して計２０００版製版したところ、全ての製版
物に付き版面洗浄不良は観られなかった。また、製版開
始１０版目、５００版目、１０００版目、及び２０００
版目の製版物について印刷性を検討したところ、通常印
刷では勿論印刷終了後に５０℃で加温した印刷版を再度
印刷しても地汚れの発生も観られず全ての印刷版に於て
良好な印刷物が得られた。As a result of continuous plate making under the above plate making conditions, a printing plate having a bluish tint and at least as good as the initial plate making product was obtained at least at the time when the plate was carried out of the unused processing liquid supply section. When the plate making was continued and a total of 2,000 plates were made, no plate surface cleaning failure was observed for all the plate-making products. In addition, plate making start 10th plate, 500th plate, 1000th plate, and 2000th plate
When the printability of the plate-making material was examined, it was found that, in normal printing, of course, even when the printing plate heated at 50 ° C. was printed again after printing was completed, no background stain was observed and all the printing plates were good. Prints were obtained.

【００８２】[0082]

【発明の効果】以上説明した如く、本発明の電子写真平
版印刷版の処理方法によって電子写真平版印刷版を処理
すれば、製版処理不良を防止して印刷に於ても地汚れ発
生のない良好な印刷版が得られるばかりでなく、各所理
液の液性劣化を抑制して長期に亙って安定した処理を可
能にすることで処理液の交換頻度を大幅に低下させ、も
って廃液処理と保守管理の負担が軽減される等、秀逸な
る効果をもたらす。As described above, if the electrophotographic lithographic printing plate is processed by the method for processing an electrophotographic lithographic printing plate of the present invention, it is possible to prevent plate making process defects and to prevent the occurrence of background contamination even in printing. Not only can a high printing plate be obtained, but also the frequency of replacement of the processing liquid is greatly reduced by suppressing the deterioration of the liquid properties of each part and enabling stable processing over a long period of time. Excellent effects, such as a reduction in the burden of maintenance management.

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

【図１】本発明の電子写真平版印刷版の処理方法を実施
するために用いた電子写真平版印刷版処理装置の縦断面
構成図。FIG. 1 is a longitudinal sectional view of an electrophotographic lithographic printing plate processing apparatus used for carrying out the electrophotographic lithographic printing plate processing method of the present invention.

【図２】電子写真平版印刷版処理装置に於ける未使用処
理液供給部の圧搾空気及び未使用処理液を吐出するスプ
レ−ガンを示す横断面構成図。FIG. 2 is a cross-sectional configuration diagram showing a spray gun for discharging compressed air and an unused processing liquid in an unused processing liquid supply unit in the electrophotographic lithographic printing plate processing apparatus.

【図３】本発明の電子写真平版印刷版の処理方法の比較
例に用いた電子写真平版印刷版処理装置の縦断面構成
図。FIG. 3 is a longitudinal sectional view of an electrophotographic lithographic printing plate processing apparatus used in a comparative example of the electrophotographic lithographic printing plate processing method of the present invention.

【符号の説明】[Explanation of symbols]

Ａ 溶出液塗布ゾ−ン Ｂ 可溶化光導電層除去廃棄ゾ−ン Ｃ リンス処理ゾ−ン Ｄ 保護ガム液塗布ゾ−ン １ 印刷版搬送ライン ５ 循環処理液貯液槽 ２２ 掻取りブレ−ド ３３ スプレ−ガン ３６ 循環処理液 ３７、３８、４２ 循環処理液供給管 ３９ 未使用処理液 ８１ コンプレッサ A eluent application zone B solubilized photoconductive layer removal waste zone C rinse treatment zone D protective gum solution application zone 1 printing plate transport line 5 circulation treatment liquid storage tank 22 scraping blade 33 spray gun 36 circulating treatment liquid 37, 38, 42 circulating treatment liquid supply pipe 39 unused treatment liquid 81 compressor

───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平３−144658（ＪＰ，Ａ) 特開 昭63−172270（ＪＰ，Ａ) 特開 平３−109575（ＪＰ，Ａ) 特開 昭58−25477（ＪＰ，Ａ) 特開 平４−261543（ＪＰ，Ａ) 実開 昭53−91701（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.7，ＤＢ名) G03G 13/26 - 13/32 G03F 7/00 G03F 7/30 - 7/32 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-3-144658 (JP, A) JP-A-63-172270 (JP, A) JP-A-3-109575 (JP, A) JP-A 58- 25477 (JP, A) JP-A-4-261543 (JP, A) JP-A-53-191701 (JP, U) (58) Fields investigated (Int. Cl. 7 , DB name) G03G 13/26-13 / 32 G03F 7/00 G03F 7/30-7/32

Claims (1)

(57)【特許請求の範囲】(57) [Claims] 【請求項１】 導電性支持体上に光導電層を設けた平版
印刷版原版に電子写真方式によりトナ−画像を形成さ
せ、次いでトナ−画像形成面に溶出液を供給して非画像
部光導電層を膨潤可溶化させ、可溶化光導電層除去手段
により版上の溶出液と可溶化した光導電層とを除去した
後、続くリンス処理工程に於て少なくとも１回は循環す
る処理液でリンスし、更にリンス処理工程最後に未使用
処理液でリンスする電子写真平版印刷版の処理方法に於
て、リンス処理工程最後の未使用処理液を圧搾空気と共
にスプレ−方式により供給し、該処理液の単位印刷版面
積に対する供給量が２５〜２００ｍｌ/ｍ2、該処理液供
給時の圧搾空気圧が２〜１０ｋｇ/ｃｍ2であることを特
徴とする電子写真平版印刷版の処理方法。1. A toner image is formed on a lithographic printing plate precursor having a photoconductive layer provided on a conductive support by an electrophotographic method, and then an eluate is supplied to the toner image forming surface to form a non-image light. After the conductive layer is swelled and solubilized, and the eluate on the plate and the solubilized photoconductive layer are removed by the solubilized photoconductive layer removing means, the processing solution is circulated at least once in a subsequent rinsing process. In an electrophotographic lithographic printing plate processing method of rinsing and further rinsing with an unused processing solution at the end of the rinsing process, the unused processing solution at the end of the rinsing process is supplied together with compressed air by a spray method. A method for processing an electrophotographic lithographic printing plate, characterized in that the supply amount of the liquid to the unit printing plate area is 25 to 200 ml / m 2 and the compressed air pressure at the time of supplying the processing liquid is 2 to 10 kg / cm 2 .
JP19540292A 1992-07-22 1992-07-22 Electrophotographic lithographic printing plate processing method Expired - Fee Related JP3231085B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP19540292A JP3231085B2 (en) 1992-07-22 1992-07-22 Electrophotographic lithographic printing plate processing method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP19540292A JP3231085B2 (en) 1992-07-22 1992-07-22 Electrophotographic lithographic printing plate processing method

Publications (2)

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JPH0635241A JPH0635241A (en) 1994-02-10
JP3231085B2 true JP3231085B2 (en) 2001-11-19

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Publication number Priority date Publication date Assignee Title
KR101206442B1 (en) 2007-06-12 2012-11-29 삼성전자주식회사 Discharging unit and image forming apparatus having the same

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