JPS63221041A - Manufacture of lithographic printing plate - Google Patents
Manufacture of lithographic printing plateInfo
- Publication number
- JPS63221041A JPS63221041A JP5445087A JP5445087A JPS63221041A JP S63221041 A JPS63221041 A JP S63221041A JP 5445087 A JP5445087 A JP 5445087A JP 5445087 A JP5445087 A JP 5445087A JP S63221041 A JPS63221041 A JP S63221041A
- Authority
- JP
- Japan
- Prior art keywords
- plate
- printing
- layer
- latent image
- printing plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000004519 manufacturing process Methods 0.000 title description 3
- 238000000034 method Methods 0.000 claims abstract description 19
- 108091008695 photoreceptors Proteins 0.000 claims description 21
- 239000011347 resin Substances 0.000 claims description 8
- 229920005989 resin Polymers 0.000 claims description 8
- 229910052782 aluminium Inorganic materials 0.000 claims description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 6
- 238000005530 etching Methods 0.000 abstract description 10
- 239000003513 alkali Substances 0.000 abstract description 3
- 239000010409 thin film Substances 0.000 abstract description 2
- 230000004304 visual acuity Effects 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 22
- 239000000243 solution Substances 0.000 description 9
- 239000010408 film Substances 0.000 description 7
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 5
- 230000008901 benefit Effects 0.000 description 5
- 150000001875 compounds Chemical class 0.000 description 5
- 230000007246 mechanism Effects 0.000 description 5
- 230000035945 sensitivity Effects 0.000 description 5
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 4
- 239000012670 alkaline solution Substances 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 238000010828 elution Methods 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- -1 silver halide Chemical class 0.000 description 4
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 229920001577 copolymer Polymers 0.000 description 3
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000005011 phenolic resin Substances 0.000 description 3
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- LWIHDJKSTIGBAC-UHFFFAOYSA-K tripotassium phosphate Chemical compound [K+].[K+].[K+].[O-]P([O-])([O-])=O LWIHDJKSTIGBAC-UHFFFAOYSA-K 0.000 description 2
- 239000011787 zinc oxide Substances 0.000 description 2
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- PYSRRFNXTXNWCD-UHFFFAOYSA-N 3-(2-phenylethenyl)furan-2,5-dione Chemical compound O=C1OC(=O)C(C=CC=2C=CC=CC=2)=C1 PYSRRFNXTXNWCD-UHFFFAOYSA-N 0.000 description 1
- WUPHOULIZUERAE-UHFFFAOYSA-N 3-(oxolan-2-yl)propanoic acid Chemical compound OC(=O)CCC1CCCO1 WUPHOULIZUERAE-UHFFFAOYSA-N 0.000 description 1
- 229920002126 Acrylic acid copolymer Polymers 0.000 description 1
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 206010034972 Photosensitivity reaction Diseases 0.000 description 1
- 239000002202 Polyethylene glycol Substances 0.000 description 1
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 1
- BUGBHKTXTAQXES-UHFFFAOYSA-N Selenium Chemical compound [Se] BUGBHKTXTAQXES-UHFFFAOYSA-N 0.000 description 1
- 239000004115 Sodium Silicate Substances 0.000 description 1
- 229920000147 Styrene maleic anhydride Polymers 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 238000007743 anodising Methods 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052980 cadmium sulfide Inorganic materials 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000003984 copper intrauterine device Substances 0.000 description 1
- LDHQCZJRKDOVOX-NSCUHMNNSA-N crotonic acid Chemical compound C\C=C\C(O)=O LDHQCZJRKDOVOX-NSCUHMNNSA-N 0.000 description 1
- 150000001989 diazonium salts Chemical class 0.000 description 1
- 239000003989 dielectric material Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- RBTKNAXYKSUFRK-UHFFFAOYSA-N heliogen blue Chemical compound [Cu].[N-]1C2=C(C=CC=C3)C3=C1N=C([N-]1)C3=CC=CC=C3C1=NC([N-]1)=C(C=CC=C3)C3=C1N=C([N-]1)C3=CC=CC=C3C1=N2 RBTKNAXYKSUFRK-UHFFFAOYSA-N 0.000 description 1
- CPBQJMYROZQQJC-UHFFFAOYSA-N helium neon Chemical compound [He].[Ne] CPBQJMYROZQQJC-UHFFFAOYSA-N 0.000 description 1
- 230000000887 hydrating effect Effects 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000011976 maleic acid Substances 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 230000036211 photosensitivity Effects 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- 239000000276 potassium ferrocyanide Substances 0.000 description 1
- 229910000160 potassium phosphate Inorganic materials 0.000 description 1
- 235000011009 potassium phosphates Nutrition 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 239000011669 selenium Substances 0.000 description 1
- 229910052711 selenium Inorganic materials 0.000 description 1
- 229960005265 selenium sulfide Drugs 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 239000001488 sodium phosphate Substances 0.000 description 1
- 229910000162 sodium phosphate Inorganic materials 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 229910052911 sodium silicate Inorganic materials 0.000 description 1
- GGCZERPQGJTIQP-UHFFFAOYSA-N sodium;9,10-dioxoanthracene-2-sulfonic acid Chemical compound [Na+].C1=CC=C2C(=O)C3=CC(S(=O)(=O)O)=CC=C3C(=O)C2=C1 GGCZERPQGJTIQP-UHFFFAOYSA-N 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- XOGGUFAVLNCTRS-UHFFFAOYSA-N tetrapotassium;iron(2+);hexacyanide Chemical compound [K+].[K+].[K+].[K+].[Fe+2].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-] XOGGUFAVLNCTRS-UHFFFAOYSA-N 0.000 description 1
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 1
- LDHQCZJRKDOVOX-UHFFFAOYSA-N trans-crotonic acid Natural products CC=CC(O)=O LDHQCZJRKDOVOX-UHFFFAOYSA-N 0.000 description 1
- 238000011282 treatment Methods 0.000 description 1
- ZIBGPFATKBEMQZ-UHFFFAOYSA-N triethylene glycol Chemical compound OCCOCCOCCO ZIBGPFATKBEMQZ-UHFFFAOYSA-N 0.000 description 1
- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Landscapes
- Electrophotography Using Other Than Carlson'S Method (AREA)
- Manufacture Or Reproduction Of Printing Formes (AREA)
Abstract
Description
【発明の詳細な説明】 （Ａ＞産業上の利用分野 本発明は、印刷版の作成方法に関する。[Detailed description of the invention] (A> Industrial application field The present invention relates to a method for making a printing plate.
（Ｂ）従来技術及びその問題点
今日まで数多くの印刷版が開発され、実用化されてきた
。(B) Prior art and its problems Many printing plates have been developed and put into practical use to date.
印刷版自体が感光性をもっている感光性平版印刷版には
、ジアゾニウム化合物等を用いたプレセンシタイズド（
ＰＳ）版、ハロゲン化銀を利用する銀塩印刷版、酸化亜
鉛や有機先導性化合物を用いた電子写真印刷版などが知
られている。Photosensitive lithographic printing plates, in which the printing plate itself has photosensitivity, are manufactured using presensitized (presensitized) materials using diazonium compounds, etc.
PS) plates, silver salt printing plates using silver halide, electrophotographic printing plates using zinc oxide or organic leading compounds, etc. are known.
高感度で高耐刷力の印刷版として、有機先導性化合物を
アルミニウム板上に塗布した印刷版は、例えば特公昭３
７−１７１６２＠、同３Ｂ−６９６１号、同４１−２４
２６号、同４６−３９４０５号、特開昭５０−１９５０
９号、同５０−１９５１０＠、同５４−１４５５３８号
、同５４−８９８０１号、同５４−１３４６３２号、同
５４−１９８０３号、同５５−１０５２５４号、同５７
−１６１８６３号、同５８−７６８４３＠、同５８−７
６８４４号、同５８−１１８６５８号、同６０−２４４
９５９号等に記載されており、これら印刷版は、コロナ
帯電、カメラ露光おるいはレーザー露光、湿式あるいは
乾式の現像、定着、非画像部のアルカリ液による溶出（
エツチング）の工程を順次経て製版されるものである。As a printing plate with high sensitivity and high printing durability, a printing plate coated with an organic leading compound on an aluminum plate, for example,
7-17162@, 3B-6961, 41-24
No. 26, No. 46-39405, Japanese Unexamined Patent Publication No. 50-1950
No. 9, No. 50-19510@, No. 54-145538, No. 54-89801, No. 54-134632, No. 54-19803, No. 55-105254, No. 57
-161863, 58-76843@, 58-7
No. 6844, No. 58-118658, No. 60-244
No. 959, etc., and these printing plates undergo corona charging, camera exposure or laser exposure, wet or dry development, fixing, and elution of non-image areas with alkaline solution (
The plate is made by sequentially going through the steps (etching).
しかしながら、上記するような電子写真プロセスを用い
て印刷版を作成する方法は多くの利点を有する反面、い
くつかの不利益、欠点をもっている。その一つは、コロ
ナ帯電を用いることに由来する。即ち、コロナ放電によ
る帯電機構は完全に解明されていなく、温湿度の変化に
よるコロナ帯電の変化は大きく、製版する毎に写真特性
、印刷特性が異なるという不安定性をもたらしている。However, although the method of creating a printing plate using the electrophotographic process as described above has many advantages, it also has several disadvantages and drawbacks. One of them comes from using corona charging. That is, the charging mechanism due to corona discharge has not been completely elucidated, and corona charging changes greatly due to changes in temperature and humidity, resulting in instability in that the photographic characteristics and printing characteristics differ each time the plate is made.
さらにコロナ帯電は、新聞印刷の如く大判の印刷版をア
ルゴン、ヘリウム−ネオン、半導体などのレーザーでス
キャナ露光する場合、暗減衰によって印刷版前後の荷電
量に差異を生じ、版全面に均一なトナー像を形成し難い
という問題がある。更に従来法の別の欠点は、高感度化
に由来するものである。Furthermore, corona charging occurs when large-sized printing plates such as those used for newspaper printing are exposed using a scanner using lasers such as argon, helium-neon, and semiconductor lasers, and dark decay causes a difference in the amount of charge before and after the printing plate, resulting in uniform toner over the entire surface of the plate. There is a problem that it is difficult to form an image. Furthermore, another drawback of the conventional method stems from the high sensitivity.
即ち、例えば前記特開昭５８−１１８６５８号、同６０
−２４４９５９Ｍ等に記載されている印刷版のように、
電荷発生層と電荷移動層を積層した、所謂機能分離型に
して高感度化を図る場合はもとより、単層型に於ても、
必然的に膜厚が厚くなり、更に有機光導電性化合物を多
量に用いるため、アルカリ液によるエツチング能力を低
下させ、解像力を悪くしたり、耐刷に優れたレジストが
形成し難いという問題がある。That is, for example, JP-A-58-118658 and JP-A-60
- Like the printed version described in 244959M etc.
Not only can you use a so-called functionally separated type in which a charge generation layer and a charge transfer layer are laminated to increase sensitivity, but also in a single layer type.
Inevitably, the film thickness becomes thicker, and since a large amount of organic photoconductive compound is used, there are problems in that the etching ability with alkaline solution is reduced, resolution becomes poor, and it is difficult to form a resist with excellent printing durability. .
更に又、従来法に於る経済的観点からの不利益は、印刷
版自体に高価な感光体を用いているため、一般に高価な
ものとならざるを得ず、しかも印刷後の印刷版を再利用
すること−は実際上困難である。Furthermore, the disadvantage of the conventional method from an economic point of view is that the printing plate itself uses an expensive photoreceptor, so it is generally expensive, and furthermore, the printing plate cannot be reused after printing. It is practically difficult to utilize it.
本発明者等は、既述した如ぎ現在の電子写真平版印刷版
の諸欠点、不利益を考慮して鋭意検討した結果、それら
欠点、不利益を解決した平版印刷版の作成が可能になる
方法を見出した。As a result of the inventors' intensive study taking into account the various drawbacks and disadvantages of current electrophotographic lithographic printing plates as described above, it has become possible to create a lithographic printing plate that solves these drawbacks and disadvantages. I found a way.
（Ｃ）発明の目的
本発明の目的は、コロナ帯電方式による従来の製版法に
於る不安定性がなく、高解像力、高耐刷力の平版印刷版
を作成する方法を提供することにある。(C) Purpose of the Invention The purpose of the present invention is to provide a method for producing a lithographic printing plate having high resolution and high printing durability without the instability of the conventional plate making method using the corona charging method.
本発明の別の目的は、コロナ帯電およびレーザー光を用
いる従来の製版法に於る画仰不均−性のない平版印刷版
の作成方法を提供するにある。Another object of the present invention is to provide a method for making a lithographic printing plate that is free from the image elevation non-uniformity that occurs in conventional plate making methods using corona charging and laser light.
本発明のさらに別の目的は、従来の製版法に比べて安価
であり、所望によっては印刷原版を容易に再調製して使
用でき、非常に経済的利益の大きい平版印刷版の作成方
法を提供するにある。Still another object of the present invention is to provide a method for preparing a lithographic printing plate which is inexpensive compared to conventional plate making methods, allows printing original plates to be easily re-prepared and used as desired, and has great economic benefits. There is something to do.
本発明のその他の目的、利点は、以下の明細書の記載に
より自ずと理解されよう。Other objects and advantages of the present invention will be understood from the following description of the specification.
（Ｄ）発明の構成
本発明は、俊述する方法によって導電性支持体上に誘電
性の非感光層を有する平版印刷原版の該非感光層上にポ
ジの静電潜像を形成し、現像、定着すやことを特徴とす
る平版印刷版の作成方法である。(D) Structure of the Invention The present invention involves forming a positive electrostatic latent image on the non-photosensitive layer of a lithographic printing original plate having a dielectric non-photosensitive layer on a conductive support by the method briefly described, developing, This is a method for producing a lithographic printing plate characterized by a fixed fixation.
本発明は、コロナ帯電を行わずに上記の非感光層に静電
潜像を形成し、現像、定着するので、製版する環境の変
化に対して安定であり、またレーザースキャナ方式で菊
全判のような大判の製版をしても均斉な印刷画像を得る
ことが出来る。また、印刷原版には感光体としての光導
電体を用いていないので、上記の非感光層、すなわち印
刷層を可能な限り薄膜にでき、非画像部をアルカリ液に
よりエツチング（溶出）する刷版のレジスト性を向上で
き、高耐刷力の印刷版を得ることが出来る。The present invention forms, develops, and fixes an electrostatic latent image on the non-photosensitive layer without performing corona charging, so it is stable against changes in the plate-making environment. It is possible to obtain a uniform printed image even when making a large-sized plate like this. In addition, since the printing original plate does not use a photoconductor as a photoreceptor, the non-photosensitive layer, that is, the printing layer, can be made as thin as possible, and the non-image area can be etched (eluted) with an alkaline solution. It is possible to improve the resistivity of the printing plate and obtain a printing plate with high printing durability.
ざらに本発明は、印刷原版とは分離された感光体を用い
るのであるが、感光体を繰り返し使用できるだけでなく
、印刷に供した印刷版のトナーあるいは印刷層を除去し
、後者の場合には誘電性の非感光層を支持体上に単にコ
ーティングするだけで、再び印刷原版として使用できる
ので極めて経済的利益が大きいのである。Roughly speaking, the present invention uses a photoconductor that is separated from the printing original plate, and not only can the photoconductor be used repeatedly, but also the toner or printing layer of the printing plate used for printing can be removed, and in the latter case, the photoconductor can be used repeatedly. Simply coating a dielectric non-photosensitive layer on a support can be used again as a printing plate, which is of great economic benefit.
本発明は、導電性支持体上に誘電性の非感光層を有する
平版印刷原版と、導電層を有する感光体とを対向させ、
印刷原版の導電性支持体と感光体の導電層の間に直流電
源により直流電圧を印加した状態で、透光性である一方
の側、通常は透光性の感光体側から像に応じた露光を行
なって、該非感光層上にポジの静電潜像を形成し、この
潜像と逆極性の現像剤で現像し、定着するものである。In the present invention, a lithographic printing original plate having a dielectric non-photosensitive layer on a conductive support and a photoreceptor having a conductive layer are placed facing each other,
Exposure according to the image from one light-transmitting side, usually the light-transmitting photoreceptor side, while applying a DC voltage from a DC power source between the conductive support of the printing original plate and the conductive layer of the photoreceptor. A positive electrostatic latent image is formed on the non-photosensitive layer, and this latent image is developed and fixed with a developer of opposite polarity.
このポジの静電潜像の形成機構については、必ずしも明
確であるとは言えないが、２〜３の機構が考えられる。Although it cannot be said that the mechanism for forming this positive electrostatic latent image is necessarily clear, two to three mechanisms are conceivable.
すなわち、光照射を受けた部分に於て、印刷原版〜感光
体間の分圧がその間の空気間隙における絶縁耐圧を超え
た範囲について内部放電が起き、該非感光層上に電荷が
蓄積されることによって静電潜像が形成される機構、お
るいは光照射を受けた部分に発生した移動性キャリアー
が外部電界の作用により誘電性表面に注入転写される、
またはその部分に電極表面から電荷が注入され誘電体表
面に移動して静電潜像が形成される、などでおる。That is, in the area irradiated with light, internal discharge occurs in the range where the partial pressure between the printing original plate and the photoreceptor exceeds the dielectric strength voltage in the air gap between them, and charges are accumulated on the non-photosensitive layer. A mechanism in which an electrostatic latent image is formed, or mobile carriers generated in the area irradiated with light are injected and transferred to the dielectric surface by the action of an external electric field.
Alternatively, charge is injected from the electrode surface into that portion and moves to the dielectric surface, forming an electrostatic latent image.
本発明は、いずれの機構であるかに拘束されるものでは
なく、前述したプロセスを経て、レーザー露光あるいは
ネガ原稿の露光によって露光部にポジの静電潜像を形成
する訳である。The present invention is not limited to any particular mechanism, but forms a positive electrostatic latent image in the exposed area by laser exposure or exposure of a negative original through the process described above.
このようなコロナ帯電を行なわずに画像を形成する方法
自体は公知であって、例えば
“ｃｈａｒｇｅ ｔａｎｓｔｅｒ ｅｔｅｃｔｒｏｐｈ
ｏｔｏｇｒａｐｈｙ”（Ｒ。The method of forming an image without corona charging is well known, for example, "charge tanster electronetrophy".
otography” (R.
Ｌ、 ＪｅｐＳｅｎ ａｎｄ Ｇ、Ｆ、［）ａｙ、
“Ｅ ＋ｅｃｔｒｏｐｈｏｔｏｇｒａｐｈｙ−２ｎｄＩ
ｎｔｅｒｎａｔｉｏｎａｌ Ｃｏｎｆｅｒｅｎｃｅ”
、 Ｄ、Ｒ，Ｗｈｉｔｅｅｄ、 、ｐ２８ （ＳＰ
ＳＥ、１９７４ ） ： ）ｆ、Ｆｅ１ｎｌｅｉｂ ａ
ｎｄＳ、 Ｒｕｔｈｅｒｆｏｒｄ、 Ａｐｐｌ、 Ｐｈ
ｏｔｏｇｒ 、Ｅｎｇ、 、４．９（１９７６）＞、等
が挙げられる。L, JepSen and G,F,[)ay,
“E + electrophotography-2ndI
International Conference”
, D.R., Whiteed, , p28 (SP
SE, 1974) : ) f, Fe1nleib a
ndS, Rutherford, Appl, Ph.
otogr, Eng., 4.9 (1976)>, etc.
しかし、これらの公知文献には、平版印刷版として利用
することはもとより、高耐刷力であることを初め、再現
性、安定性の高い製版、レーザースキャナ製版に於る均
斉・高画質、印刷原版の低廉化および繰り返し再使用等
の経済的利益については示されていない。However, these known documents contain information on not only its use as a lithographic printing plate but also high printing durability, plate making with high reproducibility and stability, uniformity and high image quality in laser scanner plate making, and printing. Economic benefits such as lower cost and repeated reuse of original plates are not indicated.
本発明の印刷原版に用いる導電性支持体としては、アル
ミニウム板、亜鉛板、鉄板、銅板等の金属板が好ましい
が、金属蒸着、金属箔の貼り合わせ或いは導電処理した
フィルムなども使用できる。The conductive support used in the printing original plate of the present invention is preferably a metal plate such as an aluminum plate, a zinc plate, an iron plate, a copper plate, etc., but metal vapor-deposited, metal foil laminated, or conductively treated films can also be used.
特に金属板の場合には、砂目立て処理、陽極酸化処理等
の表面処理したものが好ましく、露光の際、支持体が電
極としての機能を有すると同時に、非画像部の溶出によ
り印刷版となったとき、親水性を兼ね備えることが出来
る。この場合には、支持体上に設けられる非感光層は、
誘電体おるいは絶縁体として感光体から移動して来る電
荷を捕獲できる樹脂で、且つアルカリ液での溶出が出来
る樹脂を塗布して設ける。そのような樹脂としては、ア
クリル酸、メタクリル酸、クロトン酸等の酸性基を含む
七ツマ−を共重合体の少なくとも一成分とする樹脂、例
えばスチレン無水マレイン酸共重合体、マレイン酸エス
テル樹脂、酢酸ごニル−クロトン酸共重合体、酢酸ビニ
ル−無水マレイン酸共重合体、（メタ）アクリ酸エステ
ル−（メタ）アクリル酸共重合体、アクリル酸ハーフェ
ステル等、ざらにフェノール樹脂などが挙げられる。In particular, in the case of metal plates, it is preferable to use surface treatments such as graining or anodizing, so that during exposure, the support functions as an electrode and at the same time becomes a printing plate by elution of non-image areas. When this happens, it can also have hydrophilic properties. In this case, the non-photosensitive layer provided on the support is
A dielectric material or an insulating material is formed by coating a resin that can capture charges moving from the photoreceptor and can be eluted with an alkaline solution. Examples of such resins include resins in which at least one component of the copolymer is a heptamer containing an acidic group such as acrylic acid, methacrylic acid, and crotonic acid, such as styrene maleic anhydride copolymers, maleic acid ester resins, Examples include nyl acetate-crotonic acid copolymer, vinyl acetate-maleic anhydride copolymer, (meth)acrylic acid ester-(meth)acrylic acid copolymer, acrylic acid hafester, and phenolic resin.
これらの樹脂層は、薄膜、たとえば５ＩＩＩＸ以下、時
には２ＩＩｎ以下まで薄膜化できるから、印刷版に要求
される強靭な膜を形成しても容易に溶出が出来るという
利点をもたらすことができる。These resin layers can be made into thin films, for example, 5IIIX or less, sometimes 2IIn or less, so that even if a strong film required for printing plates is formed, it can be easily eluted.
本発明の印刷原版の別の例は、陽極酸化処理したアルミ
ニウム板であり、酸化アルミニウム膜が誘電性の非感光
層を構成し、且つこの層が親水性を兼ねるものである。Another example of the printing original plate of the present invention is an anodized aluminum plate, in which the aluminum oxide film constitutes a dielectric non-photosensitive layer, and this layer also serves as hydrophilic.
すなわち、本発明は、導電性支持体上の誘電性の非感光
層自身が十分な親水性を持っている、或いはそれに変換
しうる場合には、非画像部の溶出を伴うことなく印刷版
を作成することが出来るのである。現像、定着した後、
非画像部を親水性に変換しつる例としては、感光体の露
光の際、感度あるいは感光波長の違いから実質的に露光
を受けない、例えば酸化亜鉛を絶縁性樹脂に分散した層
を非感光層とし、フェロシアン化カリなどを含む籾水化
液などで親水化する方法がある。That is, in the case where the dielectric non-photosensitive layer on the conductive support itself has sufficient hydrophilicity or can be converted to hydrophilicity, the printing plate can be formed without elution of the non-image area. It is possible to create one. After developing and fixing,
An example of converting a non-image area into a hydrophilic one is to make a layer in which zinc oxide is dispersed in an insulating resin so that it is not exposed to light due to differences in sensitivity or sensitivity wavelength when exposing the photoreceptor. There is a method of forming a layer and making it hydrophilic with a rice hydrating solution containing potassium ferrocyanide.
もちろん、それ自体が親水性で絶縁性の化合物あるいは
フィルムの如きウェブを導電性支持体に塗布あるいは貼
り合わせたものを印刷原版とすることも出来る。Of course, the printing original plate can also be made by coating or bonding a web such as a hydrophilic and insulating compound or film to a conductive support.
一方、本発明で用いられる感光体としては、通常の電子
写真方式に用いられる感光体でよいが、印刷原版が非透
光性であることが多いため、感光体の支持体としては、
フィルムやガラスのような透光性のものが用いられ、ま
た印刷原版と電極を形成する必要があることから導電性
をもっている必要がある。感光成分は、前記した如きレ
ーザー光に感光する光導電性化合物が好ましい。アゾ顔
料、銅−フタロシアニン、ＰＶＫ−ＴＮＦ等の有機光導
電体、或いは非晶質セレン、硫化カドミウム等の無機光
導電体などを用いることが出来、機能分離型であっても
よい。On the other hand, the photoreceptor used in the present invention may be a photoreceptor used in ordinary electrophotography, but since the original printing plate is often non-transparent, as a support for the photoreceptor,
A translucent material such as film or glass is used, and since it is necessary to form an electrode with the printing original plate, it must be electrically conductive. The photosensitive component is preferably a photoconductive compound sensitive to laser light as described above. Organic photoconductors such as azo pigments, copper-phthalocyanine, and PVK-TNF, or inorganic photoconductors such as amorphous selenium and cadmium sulfide can be used, and a functionally separated type may be used.
本発明方法は、印刷原版と感光体を対向させ、両者の間
に適切な電圧（一般には２００Ｖ以上が良い）を印加し
つつ画像露光を行うのであるが、印刷原版と感光体とは
対向密着させてもよく、潜像電圧を高くしたいときには
適当な空気間隙（一般には１〜２０／＃Ｉ程度が良い）
を設けてもよい。In the method of the present invention, the printing original plate and the photoreceptor are placed facing each other, and image exposure is performed while applying an appropriate voltage (generally 200 V or more is good) between them. If you want to increase the latent image voltage, set an appropriate air gap (generally about 1 to 20/#I is good).
may be provided.
印刷原版と感光体の間に空気間隙を設ける方法は、印刷
原版あるいは感光体の表面に均一な凹凸を形成すること
によって可能である。An air gap can be provided between the printing original plate and the photoreceptor by forming uniform irregularities on the surface of the printing original plate or the photoreceptor.
画像形成に用いるトナーは、いわゆる乾式トナー、湿式
トナーのいずれでも良いが、解像力の優れた印刷物を得
る上では、液体現像法による湿式トナーがはるかに好ま
しい。また印刷版として用いる為にトナーは疎水性でイ
ンク受容性があり、かつ印刷に耐え得るだけの印刷版へ
の接着性を必要とする。またアルカリ及び／又はアルコ
ール液でのエツチング（溶出）を行う場合には、レジス
ト性が要求される。The toner used for image formation may be either a so-called dry toner or a wet toner, but in order to obtain printed matter with excellent resolution, a wet toner produced by a liquid development method is far more preferable. Furthermore, in order to be used as a printing plate, the toner must be hydrophobic, ink receptive, and have sufficient adhesion to the printing plate to withstand printing. Furthermore, when etching (elution) with an alkali and/or alcohol solution, resistivity is required.
エツチング液に用いるアルカリとしては、水酸化ナトリ
ウム、水酸化カリウム、炭酸ナトリウム、ケイ酸ナトリ
ウム、リン酸ナトリウム、リン酸カリウム、アンモニア
等が挙げられる。Examples of the alkali used in the etching solution include sodium hydroxide, potassium hydroxide, sodium carbonate, sodium silicate, sodium phosphate, potassium phosphate, and ammonia.
アルコールとしてはメタノール、エタノール、プロパツ
ール、ベンジルアルコール等の低級アルコールや芳香族
アルコール及びエチレングリコール、ジエチレングリコ
ール、トリエチレングリコール、ポリエチレングリコー
ル、セロソルブ類が挙げられる。エツチング処理はアル
カリ水溶液単独、アルコール単独でも可能である。Examples of the alcohol include lower alcohols such as methanol, ethanol, propatool, and benzyl alcohol, aromatic alcohols, and ethylene glycol, diethylene glycol, triethylene glycol, polyethylene glycol, and cellosolves. Etching treatment can be performed using an alkaline aqueous solution or alcohol alone.
下記のエツチング液を一例として使用できる。The following etching solution can be used as an example.
以下に本発明を若干の実施例により説明する。 The invention will now be explained by some examples.
実施例１
銅−７タロシアニンをアクリル系樹脂を用いて分散した
液を透明導電性フィルム（三菱化成、ＩＰ−００１＞上
に塗布、乾燥して感光体を製造した。Example 1 A photoreceptor was manufactured by coating a liquid in which copper-7 talocyanine was dispersed using an acrylic resin on a transparent conductive film (Mitsubishi Kasei, IP-001) and drying it.
一方、陽極酸化処理したアルミニウム板上にフェノール
樹脂を２ｇ／７７ｆとなるように塗布、乾燥して印刷原
版を製造した。On the other hand, a phenol resin was coated on an anodized aluminum plate at a weight of 2 g/77f and dried to produce a printing original plate.
上記の感光体の及び印刷原版の塗布面を重ね合わせ、外
部より感光体と印刷原版の間に直流電源で４００Ｖの電
圧を印加しつつ、透明ネガ原稿を通して感光体背面より
画像露光を行なった。The coated surfaces of the above-mentioned photoreceptor and printing original plate were overlapped, and while applying a voltage of 400 V from a DC power source between the photoreceptor and printing original plate from the outside, image exposure was performed from the back of the photoreceptor through a transparent negative original.
電圧を除き、この印刷原版を液体トナー現像し、定着し
たところ、最大画像濃度１．５でカブリのないポジ画像
が得られた。さらに、この印刷原版を前記エツチング液
で溶出した結果、極めて迅速に非画像部が除去され、解
像力の良いレジスト画像を有する印刷版が作成された。When the voltage was removed and this printing original plate was developed with liquid toner and fixed, a positive image with a maximum image density of 1.5 and no fog was obtained. Furthermore, as a result of dissolving this printing original plate with the etching solution, the non-image area was removed extremely quickly, and a printing plate having a resist image with good resolution was created.
この印刷版は、１０万枚以上の印刷が可能であった。This printing plate was capable of printing over 100,000 sheets.
次に、この使用済の印刷版をトナー溶解液と前記エツチ
ング液により樹脂層すべてを除去した後、前記したフェ
ノール樹脂溶液を同様に塗布して再び印刷原版とした。Next, the entire resin layer of this used printing plate was removed using a toner dissolving solution and the etching solution, and then the above-mentioned phenol resin solution was applied in the same manner to prepare a printing original plate again.
先に使用したと同じ感光体を用いて本発明を繰り返した
。同様に高耐刷力の印刷版であった。The invention was repeated using the same photoreceptor used previously. Similarly, it was a printing plate with high printing durability.
実施例２
実施例１の感光体に微粒子を分散し、印刷原版として陽
極酸化処理したアルミニウム板そのものを用いる以外は
、実施例１の方法で露光、現像、定着して印刷版を作成
した。最大画像濃度０．７でカブリのない印刷版であり
、実施例１と同様に高耐刷であった。Example 2 A printing plate was prepared by dispersing fine particles in the photoreceptor of Example 1 and exposing, developing, and fixing in the same manner as in Example 1, except that the anodized aluminum plate itself was used as the printing original plate. The printing plate had a maximum image density of 0.7 and no fog, and had high printing durability as in Example 1.
Claims (3)
印刷原版と導電層を有する感光体とを対向させ、双方の
導電層の間に直流電源により直流電圧を印加した状態で
、透光性のいずれか一方の側から露光を行ない、該原版
の非感光層上にポジの静電潜像を形成せしめた後、現像
および定着することを特徴とする平版印刷版の作成方法
。(1) With a lithographic printing original plate having a dielectric non-photosensitive layer on a conductive support and a photoreceptor having a conductive layer facing each other, and a DC voltage being applied between both conductive layers by a DC power supply, A method for preparing a lithographic printing plate, which comprises exposing from either one of the light-transmitting sides to form a positive electrostatic latent image on the non-photosensitive layer of the original plate, and then developing and fixing the image.
であり、該非感光層がアルカリ可溶性の樹脂層である特
許請求の範囲第１項記載の平版印刷版の作成方法。(2) The method for preparing a lithographic printing plate according to claim 1, wherein the conductive support is an anodized aluminum plate, and the non-photosensitive layer is an alkali-soluble resin layer.
うる層である特許請求の範囲第１項記載の平版印刷版の
作成方法。(3) The method for preparing a lithographic printing plate according to claim 1, wherein the dielectric non-photosensitive layer is further hydrophilic or a layer convertible thereto.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62054450A JPH0750339B2 (en) | 1987-03-09 | 1987-03-09 | How to make a planographic printing plate |
| DE19883883811 DE3883811T2 (en) | 1987-03-09 | 1988-01-14 | Manufacturing method of lithographic printing plates, use of such a printing plate for printing and printing method with such a printing plate. |
| EP19880100453 EP0281727B1 (en) | 1987-03-09 | 1988-01-14 | A method for making a lithographic printing plate, the use of such a printing plate for printing, and a method of printing using such a printing plate |
| US07/750,737 US5332652A (en) | 1987-03-09 | 1991-08-21 | Method for making lithographic printing plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62054450A JPH0750339B2 (en) | 1987-03-09 | 1987-03-09 | How to make a planographic printing plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63221041A true JPS63221041A (en) | 1988-09-14 |
| JPH0750339B2 JPH0750339B2 (en) | 1995-05-31 |
Family
ID=12971032
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62054450A Expired - Lifetime JPH0750339B2 (en) | 1987-03-09 | 1987-03-09 | How to make a planographic printing plate |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0750339B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63256439A (en) * | 1987-04-14 | 1988-10-24 | Mitsubishi Paper Mills Ltd | Method for making lithography |
| US5414496A (en) * | 1989-09-21 | 1995-05-09 | Dai Nippon Printing Co., Ltd. | Method for manufacturing a printing plate using a charge carrier medium and method for page make-up using a charge carrier medium |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51117041A (en) * | 1975-04-08 | 1976-10-14 | Toray Ind Inc | Optical electro-static printer |
| JPS5683750A (en) * | 1979-12-12 | 1981-07-08 | Toray Ind Inc | Direct engraving method of lithographic printing plate which does not require water |
-
1987
- 1987-03-09 JP JP62054450A patent/JPH0750339B2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51117041A (en) * | 1975-04-08 | 1976-10-14 | Toray Ind Inc | Optical electro-static printer |
| JPS5683750A (en) * | 1979-12-12 | 1981-07-08 | Toray Ind Inc | Direct engraving method of lithographic printing plate which does not require water |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63256439A (en) * | 1987-04-14 | 1988-10-24 | Mitsubishi Paper Mills Ltd | Method for making lithography |
| US5414496A (en) * | 1989-09-21 | 1995-05-09 | Dai Nippon Printing Co., Ltd. | Method for manufacturing a printing plate using a charge carrier medium and method for page make-up using a charge carrier medium |
| US5519469A (en) * | 1989-09-21 | 1996-05-21 | Dai Nippon Printing Co., Ltd. | Printing plate using a charge carrier medium |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0750339B2 (en) | 1995-05-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4444858A (en) | Method of preparing a lithographic printing plate | |
| US4814246A (en) | Light-sensitive photoconductive recording material with light sensitive covering layer for use in manufacturing printing form or printed circuit | |
| US4518668A (en) | Method for preparing a lithographic printing plate | |
| JPH0157783B2 (en) | ||
| US4226930A (en) | Electrophotographic method for producing photopolymer printing plate | |
| CA1332118C (en) | Imaging system | |
| US4897329A (en) | Method for preparing a lithographic printing plate and a light-sensitive material used therefor | |
| JPS63221041A (en) | Manufacture of lithographic printing plate | |
| US4263359A (en) | Charge receptor film for charge transfer imaging | |
| JPH0230502B2 (en) | ||
| EP0281727B1 (en) | A method for making a lithographic printing plate, the use of such a printing plate for printing, and a method of printing using such a printing plate | |
| US5414496A (en) | Method for manufacturing a printing plate using a charge carrier medium and method for page make-up using a charge carrier medium | |
| US3944417A (en) | Process for the electrophotographic production of printing plates | |
| US3681065A (en) | Dye transfer color electrophotography | |
| US5332652A (en) | Method for making lithographic printing plate | |
| JPS63256439A (en) | Method for making lithography | |
| US3455240A (en) | Imaging system | |
| JPS58150953A (en) | Manufacture of lithographic plate and photosensitive material used for lithographic plate | |
| US5194352A (en) | Method for toner development of electrostatic latent image and for formation of toner image in which a specified gap is maintained between a photosensitive member and an electrostatic information recording medium | |
| JP2736233B2 (en) | Monochromatic and polychromatic color proofs with low optical halftone dot growth, methods and means for their production | |
| US3149059A (en) | Reproduction process | |
| EP0433958B1 (en) | Reversal development of latent electrostatic images on xeroprinting masters | |
| JP3565885B2 (en) | Electrophotography | |
| JPS5922218B2 (en) | Photosensitive materials for printing plates | |
| JPH01230064A (en) | Planographic printing plate |