JPH01172832A - Plate making method - Google Patents
Plate making methodInfo
- Publication number
- JPH01172832A JPH01172832A JP62331113A JP33111387A JPH01172832A JP H01172832 A JPH01172832 A JP H01172832A JP 62331113 A JP62331113 A JP 62331113A JP 33111387 A JP33111387 A JP 33111387A JP H01172832 A JPH01172832 A JP H01172832A
- Authority
- JP
- Japan
- Prior art keywords
- plate
- original
- making
- image
- support
- 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
- 238000000034 method Methods 0.000 title claims abstract description 22
- 239000000463 material Substances 0.000 claims abstract description 27
- 238000002834 transmittance Methods 0.000 claims abstract description 23
- 229910052709 silver Inorganic materials 0.000 claims description 5
- 239000004332 silver Substances 0.000 claims description 5
- 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 claims description 5
- -1 silver halide Chemical class 0.000 claims description 4
- 238000007639 printing Methods 0.000 description 10
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 7
- 229910052782 aluminium Inorganic materials 0.000 description 7
- 238000011161 development Methods 0.000 description 7
- 238000012545 processing Methods 0.000 description 4
- 238000012546 transfer Methods 0.000 description 4
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 4
- 229910052721 tungsten Inorganic materials 0.000 description 4
- 239000010937 tungsten Substances 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- 238000007645 offset printing Methods 0.000 description 3
- 108091008695 photoreceptors Proteins 0.000 description 3
- 239000004065 semiconductor Substances 0.000 description 3
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 235000010724 Wisteria floribunda Nutrition 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052740 iodine Inorganic materials 0.000 description 1
- 239000011630 iodine Substances 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000000206 photolithography Methods 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
Landscapes
- Preparing Plates And Mask In Photomechanical Process (AREA)
- Exposure And Positioning Against Photoresist Photosensitive Materials (AREA)
Abstract
Description
【発明の詳細な説明】
〈産業上の利用分野）
本発明は製版方法に関する。本発明は特にオフセット用
印刷版の製版方法に関する。DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a plate-making method. The present invention particularly relates to a method for making offset printing plates.
（従来の技術）
従来、ダイレクト製版の分野では、版下台紙に写真植字
用印画紙の画像などを貼り込んで反射原稿を作り、この
反射原稿をレンズを通してカメラ方式でダイレクト製版
用材料に撮影し、現像などの処理を施してオフセット用
印刷版を作っている。(Conventional technology) Conventionally, in the field of direct plate making, a reflective original is created by pasting an image of phototypesetting paper onto a base plate, and this reflective original is photographed through a lens and onto a direct plate making material using a camera method. , processing such as development is performed to create offset printing plates.
また、通常の写真製版の分野マ、前記の反射原稿を製版
用リスフィルムに製版カメラで撮影するか、またはスキ
ャナーを使って反射露光し、続いて現像などの処理を施
して画像を作りこの製版用リスフィルムをＰＳ版に密着
して露光し、続いて現像などの処理を施してオフセット
用印刷版を作ることがある。In addition, in the field of normal photoengraving, the above-mentioned reflective original is photographed on lithographic film for plate making using a plate making camera, or reflective exposure is performed using a scanner, and then processing such as development is performed to create an image. An offset printing plate is sometimes made by exposing a printing press film in close contact with a PS plate, and then performing processing such as development.
（発明が解決しようとする問題点）
前記の製版方法に於て、反射原稿中に５〜１０％または
９０〜９５％の網点画像があると、ダイレクト製版用材
料や製版用リスフィルムでの網点再現性が悪く原稿の網
点が忠実に再現出来ないと言う問題がある。１だ反射原
稿の面積が大きい場合、大型の製版カメラやスキャナー
が必要となると言う問題もある。(Problems to be Solved by the Invention) In the above-mentioned plate-making method, if there is a halftone image of 5 to 10% or 90 to 95% in the reflective original, it will be difficult to use the direct plate-making material or the lithographic film for plate-making. There is a problem in that the halftone dot reproducibility is poor and the halftone dots of the original cannot be faithfully reproduced. There is also the problem that when the surface area of a single-reflection original is large, a large plate-making camera or scanner is required.
本発明は上記問題点を解決しようとするものである。The present invention attempts to solve the above problems.
（問題点を解決するための手段）
前記の諸問題は、支持体上に画像を形成した原図を原稿
とし、この原稿と製版用感光材料を密着して原稿側から
製版用感光材料に露光する工程を含む製版方法において
、画像が形成された部分の支持体の光透過率が実質的に
等しくかつ５０％以下であること、画像が形成されてい
ない部分の支持体の光透過率が、画像が形成された部分
の支持体の光透過率と実質的に等しいかもしくはこれよ
り高いこと、を特徴とする製版方法により解決された。(Means for solving the problems) The above-mentioned problems can be solved by using an original drawing with an image formed on a support as a manuscript, bringing this manuscript into close contact with a photosensitive material for platemaking, and exposing the photosensitive material for platemaking from the original side. In the plate-making method including the step, the light transmittance of the support in the part where the image is formed is substantially equal and 50% or less, and the light transmittance of the support in the part where the image is not formed is equal to the light transmittance of the support in the part where the image is not formed. The problem was solved by a plate-making method characterized by having a light transmittance substantially equal to or higher than the light transmittance of the support in the portion on which it is formed.
本発明に使用する支持体は、密着露光する製版用感光材
料の感光波長域内の光の透過率が５０％以下、通常は３
０％以下のものである。The support used in the present invention has a transmittance of 50% or less, usually 3.
0% or less.
数表に種々のシートの白色光、青色光、緑色光、赤色光
に対する透過率（％）を示す。The table shows the transmittance (%) of various sheets for white light, blue light, green light, and red light.
光透過率の測定はマクベス濃度計ＴＲ−９２７型（マク
ベス社製）による。その際、露光する製版用感光材料の
感光波長域に応じてフィルターの種類をオルソクロマチ
ック、赤、緑、青の中から選択する。The light transmittance was measured using a Macbeth densitometer model TR-927 (manufactured by Macbeth). At this time, the type of filter is selected from among orthochromatic, red, green, and blue depending on the wavelength range to which the plate-making photosensitive material to be exposed is sensitive.
上記のシートのうち、本発明の、画像を形成する支持体
として適切なものは、版下台紙、合成紙、写真印画紙、
ＰＰＣ用紙などの低透光性支持体である。Among the above-mentioned sheets, those suitable as a support for forming an image according to the present invention include a block mount, synthetic paper, photographic paper,
It is a low light-transmitting support such as PPC paper.
このような低透光性支持体上に画像を形成したものの例
としては、写真植字機、ファクシミリなどで銀塩写真印
画紙上に形成した画像、版下台紙上に製図用墨インクで
描いた画像および紙上の片面印刷物などが挙げられる。Examples of images formed on such low-light-transmitting supports include images formed on silver halide photographic paper using a phototypesetting machine, facsimile, etc., and images drawn with drafting black ink on a block mount. and single-sided prints on paper.
このような原稿の一例を第１図に示す。An example of such a manuscript is shown in FIG.
本発明においてはまた、第２図に示すように、上記低透
光性支持体１上に画像２を形成した原図２０の一部の上
に、高透光性支持体３上に画像２′を形成した原図３０
を貼込んだものを原稿とし、この原稿と製版用感光材料
を密着して原稿側から露光することも出来る。In the present invention, as shown in FIG. Original drawing 30 that formed
It is also possible to use the pasted document as a document, bring the document and photosensitive material for plate making into close contact, and expose from the document side.
このような高透光性支持体としては、密着露光する製版
用感光材料の感光波長域内の光の透過率が７０％以上、
好ましくは９０％以上のものが適切である。高透光性支
持体上に画像を形成したものの例としては、銀塩写真フ
ィルム特に製版用リスフィルム上に形成した画像が挙げ
られる。Such highly transparent supports include those having a transmittance of 70% or more for light within the sensitive wavelength range of the photosensitive material for plate making that is subjected to contact exposure;
Preferably, 90% or more is appropriate. Examples of images formed on highly transparent supports include images formed on silver salt photographic films, particularly lithographic films for plate making.
本発明においてはさらに、第３図に示すように、複数の
原稿、たとえば第１図の原稿Ａと第２図の原稿Ｂを透光
性台紙４０に貼込んだものを原稿とし、この原稿と製版
用感光材料を密着して原稿側から露光することも出来る
。前記の透光性台紙としては、密着露光する製版用感光
材料の感光波長域内の光を透過するものであればよいが
、−船釣には版下台紙、合成紙、透明なプラスチックフ
ィルムなどが適している。In the present invention, as shown in FIG. 3, a plurality of originals, for example, original A in FIG. 1 and original B in FIG. It is also possible to expose from the original side with the photosensitive material for plate making in close contact with the original. The above-mentioned translucent mount may be one that transmits light within the sensitive wavelength range of the plate-making photosensitive material to be closely exposed; however, for boat fishing, stencil mounts, synthetic paper, transparent plastic films, etc. Are suitable.
第１図〜第３図から明らかなように、本発明の特徴は画
像が形成された部分（２，２′）の支持体の光透過率が
実質的に等しくかつ５０％以下であり、画像が形成され
ていない部分（４，４′、Ｓ）の支持体の光透過率が、
画像が形成された部分の支持体の光透過率と実質的に等
しいかあるいはこれより高いことを特徴とするものであ
る。これにより製版用感光材料の仕上がりムラを無くす
ことができる。As is clear from FIGS. 1 to 3, a feature of the present invention is that the light transmittance of the support in the image-formed portions (2, 2') is substantially equal and 50% or less; The light transmittance of the support in the part (4, 4', S) where is not formed is
It is characterized by having a light transmittance substantially equal to or higher than the light transmittance of the support in the portion on which the image is formed. This makes it possible to eliminate uneven finishing of the photosensitive material for plate making.
第２図に示すように、画像部２と２′の光透過率の違い
は高透光性支持体３の有無によるものであり、この差は
密着露光する製版用感光材料の露光ラチチ二−ド内に入
るので、画像部２と２′の光透過率は“実質的に等しく
”したがって、画像部２と２′の間では仕上りムラが生
じない。As shown in FIG. 2, the difference in light transmittance between the image areas 2 and 2' is due to the presence or absence of the highly transparent support 3, and this difference is due to the exposure latitude of the plate-making photosensitive material that is exposed in close contact. Therefore, the light transmittances of the image areas 2 and 2' are "substantially equal", so that no uneven finish occurs between the image areas 2 and 2'.
第３図は、複数の原稿ＡとＢを１枚の台紙に貼り込むこ
とにより、原稿の編集を行ったものであり、前記第２図
の場合と同様に原稿Ａと原稿Ｂの間に仕上りムラは生じ
ない。この際、複数の原稿間の間隙Ｓを埋める必要はな
い。というのは、この部分には画像がなく過剰の露光が
与えられても画像の仕上りには影響を及ぼさないからで
ある。Figure 3 shows a manuscript edited by pasting multiple manuscripts A and B onto a single mount, and as in the case of Figure 2 above, there is a finished paper between manuscript A and manuscript B. No unevenness occurs. At this time, it is not necessary to fill the gaps S between the plurality of documents. This is because there is no image in this area and overexposure will not affect the quality of the image.
すなわち、非画像部（４，４′、Ｓ）の下側部分の支持
体の光透過率が、画像部（２，２′）の下側部分の支持
体の光透過率に実質的に等しいかあるいはこれより高け
れば、画像部（２，２′）に対する露光が適性である限
り、露光不足となることはないし、また非画像部である
から露光過剰となっても画像の仕上りには影響を及ぼさ
ないのである。That is, the light transmittance of the support in the lower part of the non-image area (4, 4', S) is substantially equal to the light transmittance of the support in the lower part of the image area (2, 2'). or higher, as long as the exposure for the image area (2, 2') is appropriate, there will be no underexposure, and since it is a non-image area, even if it is overexposed, it will affect the finish of the image. It has no effect.
本発明の製版用感光材料としては、電子写真型ダイレク
ト製版材料、銀塩写真型ダイレクト製版材料および銀塩
写真型製版用リスフィルムなどが用いられる。As the photosensitive material for plate making of the present invention, an electrophotographic direct plate making material, a silver salt photographic direct plate making material, a lithium film for silver salt photographic plate making, etc. are used.
実施例１
アルミニウム板上に有機半導体層を設けた感光体く以下
ＯＰＣという）をフラットボードに真空吸着しコロナ電
極によりコロナ帯電を行いＯＰＣの表面を負極性に帯電
させた。Example 1 A photoreceptor (hereinafter referred to as OPC) having an organic semiconductor layer provided on an aluminum plate was vacuum-adsorbed onto a flat board and corona-charged with a corona electrode to negatively charge the surface of the OPC.
ついで第１図〜第３図に示す原稿作製法（１）、（２）
、（３）に従って作製した原稿をＯＰＣと真空密着し原
稿側から露光した。（１）、（２）の原稿の場合２０Ｗ
タングステンランプを用い、距離８００ｍｍで７秒間露
光し、（３）の原稿の場合１００Ｗタングステンランプ
を用い、距離８００ｍｍで１３秒間露光した。Next, the manuscript preparation methods (1) and (2) shown in FIGS. 1 to 3
, (3) was placed in vacuum contact with an OPC and exposed from the original side. 20W for (1) and (2) originals
Using a tungsten lamp, exposure was performed for 7 seconds at a distance of 800 mm, and in the case of the document (3), exposure was performed for 13 seconds using a 100 W tungsten lamp at a distance of 800 mm.
次に、静電潜像が表面に形成されたＯＰＣを液体現像剤
中並びに現像電極の下を通して現像した。Next, the OPC on which the electrostatic latent image was formed was developed by passing it through a liquid developer and under a developing electrode.
この現像処理により液体現像剤のキャリヤー中に分散し
ている正の極性に帯電しているトナー粒子が、ＯＰＣの
静電潜像部分に付着しトナー像を形成する。次に、ＯＰ
Ｃ上のトナー像を形成するトナー粒子が液体現像剤のキ
ャリアーによって未だ湿っている状態において、ＯＰＣ
表面をトナー像の帯電極性と同じ極性となるようなコロ
ナ放電により帯電しついで、ＯＰＣ上に、印刷版として
用いられる陽極酸化したアルミニウム板、または砂目立
したアルミニウム板を重ね、転写ローラーに負電荷を印
加し圧力をかけながら移動して転写を行った。アルミニ
ウム板をＯＰＣから剥離し熱定着して刷版を作製した。Through this development process, positively charged toner particles dispersed in the carrier of the liquid developer adhere to the electrostatic latent image portion of the OPC to form a toner image. Next, OP
While the toner particles forming the toner image on C are still wet with the carrier of the liquid developer, the OPC
The surface is charged by corona discharge so that the polarity is the same as that of the toner image, and then an anodized aluminum plate used as a printing plate or a grained aluminum plate is placed on top of the OPC, and a transfer roller is charged with a negative charge. Transfer was performed by moving while applying an electric charge and applying pressure. The aluminum plate was peeled off from the OPC and heat-fixed to prepare a printing plate.
この結果、（１）、（２）、（３）の原稿共、６５．８
５．１００．１２０．１３３および１５０線／インチで
５〜９５％の網点が忠実に再現された。また文字に関し
ては、細明朝体で７〜１００級まできれいに再現された
。As a result, the manuscripts of (1), (2), and (3) are all 65.8
5-95% halftone dots were faithfully reproduced at 5.100.120.133 and 150 lines/inch. As for the letters, they were beautifully reproduced in fine Mincho fonts from grades 7 to 100.
一方、比較のため、密着露光のかわりに、上記原稿（１
）、（２〕、（３）を製版カメラにセットし、ＯＰＣを
帯電させ６１０ｍｍレンズ、絞り１６で５００Ｗのヨウ
素ランプ４ケを用いて６秒間反射撮影後、前記方法で現
像、転写、定着を行った。得られた画像は６５．８５線
／インチでは１０〜９０％、１００．１２０線／インチ
では１５〜８５％、１３３．１５０線／インチでは１５
〜８０％の網点しか再現されず画像のキレも悪かった。On the other hand, for comparison, the above original (1
), (2), and (3) were set in a plate-making camera, the OPC was charged, and a 610 mm lens and 4 x 500 W iodine lamps were used at an aperture of 16 to take a reflection photograph for 6 seconds. Then, development, transfer, and fixing were performed using the method described above. The resulting image was 10-90% at 65.85 lines/inch, 15-85% at 100.120 lines/inch, and 15% at 133.150 lines/inch.
Only ~80% of halftone dots were reproduced and the image was not sharp.
実施例２
印刷版として用いられる陽極酸化アルミニウム板、また
は砂目立てしたアルミニウム板上に有機半導体を塗布し
た感光体に、実施例１と同様の方法で帯電、密着露光、
現像を行い、転写することなくこの感光体上の画像を熱
定着した。ついでアルカリ水溶液に浸漬して非画像部の
有機半導体を溶出させ、アルミニウム板表面を露出させ
た。この方法で作製された刷版も、６５〜１５０線／イ
ンチで５〜９５％の網点を忠実に再現した。Example 2 A photoreceptor made of an anodized aluminum plate used as a printing plate or a grained aluminum plate coated with an organic semiconductor was charged, contact exposed, and exposed in the same manner as in Example 1.
Development was performed, and the image on this photoreceptor was heat-fixed without being transferred. Then, the aluminum plate surface was exposed by immersing it in an alkaline aqueous solution to elute the organic semiconductor in the non-image area. Plates made in this manner also faithfully reproduced 5-95% halftone dots at 65-150 lines/inch.
実施例３
軽印刷で用いられている酸化亜鉛マスターペーパーを用
いて実施例１と同様の方法で、帯電、密着露光、現像を
行い転写することなく熱定着して刷版を作製した。原稿
（１）および（２）については、２０Ｗタングステンラ
ンプを用い、距離８００ｆｆｌｌＩｌで５秒間露光し、
原稿（３）については、１００Ｗタングステンランプを
用い、距離８００ｍｍで９．５秒間露光した。この方法
で得られた刷版も６５〜１５０線／インチで５〜９５％
の網点を忠実に再現した。Example 3 Using zinc oxide master paper used in light printing, a printing plate was prepared in the same manner as in Example 1 by charging, contact exposure, development, and heat fixing without transfer. Originals (1) and (2) were exposed for 5 seconds using a 20W tungsten lamp at a distance of 800ffllIl.
Original (3) was exposed for 9.5 seconds at a distance of 800 mm using a 100 W tungsten lamp. The printing plate obtained by this method also has 65 to 150 lines/inch and 5 to 95%
The halftone dots are faithfully reproduced.
実施例４
実施例１で使用した（１）、（２）、（３）の原稿を夫
々銀塩写真型ダイレクト製版材料（三菱製紙側製シルバ
ーマスター）と密着して露光し通常の処理を施して画像
を形成した。いずれも６５〜１５０線／インチで５〜９
５％の網点を忠実に再現した。Example 4 The manuscripts (1), (2), and (3) used in Example 1 were exposed in close contact with a silver halide phototype direct plate making material (Silver Master manufactured by Mitsubishi Paper Industries) and subjected to normal processing. An image was formed. Both are 65-150 lines/inch and 5-9
5% halftone dots are faithfully reproduced.
実施例５
実施例１で使用した（１）、（２）、（３）の原稿を銀
塩写真型製版用フィルム（フジリスフィルム：富士写真
フィルム側製）と真空密着して（１）、（２）の原稿に
ついては２０Ｗの電球で６秒間、（３）の原稿について
は１００Ｗの電球で１１秒間露光し、自動現像機にてネ
ガフィルムを作製し、このネガフィルムをＰＳ版に密着
焼付けし現像して刷版を得た。いずれも６５〜１５０線
／インチで５〜９５％の網点が忠実に再現された。又、
文字に関しても細明朝体で７級〜１００級まできれいに
再現されていた。密着露光のかわりに上記同一原稿を製
版カメラにセットし反射撮影で６１０ｍレンズ、シボリ
１６で５秒露光し、自動現像機にて現像してネガフィル
ムを作製し、このネガフィルムをＰＳ版に密着焼付し現
像して刷版を得た。いずれも６５．８５．１００線／イ
ンチで１０〜９０％、１２０．１３３．１５０線／イン
チで１５〜８５％までの網点しか再現されなかった。Example 5 The manuscripts (1), (2), and (3) used in Example 1 were vacuum-adhered to a silver halide photolithography film (Fujiris Film, manufactured by Fuji Photo Film Co., Ltd.) (1). The original in (2) was exposed for 6 seconds with a 20W light bulb, and the original in (3) was exposed for 11 seconds with a 100W light bulb, a negative film was created using an automatic processor, and this negative film was printed in close contact with the PS plate. It was developed and a printing plate was obtained. In all cases, halftone dots of 5 to 95% were faithfully reproduced at 65 to 150 lines/inch. or,
The letters were neatly reproduced in fine Mincho fonts from grade 7 to grade 100. Instead of close exposure, the same original as above was set in a plate-making camera, exposed for 5 seconds with a 610m lens and Shibori 16 using reflection photography, developed with an automatic processor to create a negative film, and this negative film was closely attached to the PS plate. A printing plate was obtained by printing and developing. In both cases, only 10 to 90% halftone dots were reproduced at 65.85.100 lines/inch and 15 to 85% at 120.133.150 lines/inch.
（発明の効果）
本発明方法によれば、製版カメラやスキャナーを使用す
る必要がないので原稿の大きさに事実上制限がなく、し
かもダイレクト製版用材料や製版用リスフィルムでの網
点画像を忠実に再現することができ、また、原稿を通し
て直接に製版用感光材料に露光することができるので従
来法と比較して工程が短縮され、経済的である。(Effects of the Invention) According to the method of the present invention, there is no need to use a plate-making camera or a scanner, so there is virtually no limit to the size of the document, and moreover, halftone images can be obtained using direct plate-making materials or plate-making lithographic film. It can be faithfully reproduced, and since the photosensitive material for plate making can be exposed directly through the original, the process is shortened and economical compared to conventional methods.
第１図〜第３図は、本発明方法に使用される原稿の具体
例の断面を示す図面である。
第３図1 to 3 are cross-sectional views of specific examples of manuscripts used in the method of the present invention. Figure 3
Claims (1)
稿と製版用感光材料を密着して原稿側から製版用感光材
料に露光する工程を含む製版方法において、 画像が形成された部分の支持体の光透過率が実質的に等
しくかつ５０％以下であること、画像が形成されていな
い部分の支持体の光透過率が、画像が形成された部分の
支持体の光透過率と実質的に等しいかもしくはこれより
高いこと、 を特徴とする製版方法。 ２、支持体上に画像を形成した原図の一部の上に、高透
光性支持体上に画像を形成した別の原図を貼込んだもの
を原稿とすることを特徴とする特許請求の範囲第１項記
載の製版方法。 ３、支持体上に画像を形成した複数の原図を透光性台紙
に貼込んだものを原稿とすることを特徴とする特許請求
の範囲第１項記載の製版方法。 ４、支持体上に画像を形成した原図が銀塩写真印画紙か
らの画像であることを特徴とする特許請求の範囲第１項
記載の製版方法。 ５、製版用感光材料が電子写真型ダイレクト製版材料で
あることを特徴とする特許請求の範囲第１項記載の製版
方法。 ６、製版用感光材料が銀塩写真型ダイレクト製版材料で
あることを特徴とする特許請求の範囲第１項記載の製版
方法。 ７、製版用感光材料が銀塩写真型製版用フィルムである
ことを特徴とする特許請求の範囲第１項記載の製版方法
。[Scope of Claims] 1. A plate-making method including the step of using an original drawing with an image formed on a support as a manuscript, bringing the manuscript into close contact with a photosensitive material for plate-making, and exposing the photo-sensitive material for plate-making from the manuscript side, The light transmittance of the support in the part where the image is formed is substantially equal and 50% or less, and the light transmittance of the support in the part where the image is not formed is the same as that of the support in the part where the image is formed. A plate-making method characterized by having a light transmittance substantially equal to or higher than that of. 2. A patent claim characterized in that the original is a document in which another original drawing with an image formed on a highly transparent support is pasted on a part of the original drawing with an image formed on the support. The plate-making method described in Scope 1. 3. The plate-making method according to claim 1, wherein the manuscript is a plurality of original drawings with images formed on a support and pasted onto a translucent mount. 4. The plate-making method according to claim 1, wherein the original image formed on the support is an image from silver halide photographic paper. 5. The plate-making method according to claim 1, wherein the photosensitive material for plate-making is an electrophotographic direct plate-making material. 6. The plate-making method according to claim 1, wherein the photosensitive material for plate-making is a silver salt photographic type direct plate-making material. 7. The plate-making method according to claim 1, wherein the photosensitive material for plate-making is a silver salt photographic plate-making film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62331113A JPH01172832A (en) | 1987-12-26 | 1987-12-26 | Plate making method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62331113A JPH01172832A (en) | 1987-12-26 | 1987-12-26 | Plate making method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01172832A true JPH01172832A (en) | 1989-07-07 |
| JPH0545942B2 JPH0545942B2 (en) | 1993-07-12 |
Family
ID=18240003
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62331113A Granted JPH01172832A (en) | 1987-12-26 | 1987-12-26 | Plate making method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01172832A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59195241A (en) * | 1983-04-20 | 1984-11-06 | Yoshio Kamimura | Formation of colored original for block copy |
| JPS6246190U (en) * | 1985-09-03 | 1987-03-20 |
-
1987
- 1987-12-26 JP JP62331113A patent/JPH01172832A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59195241A (en) * | 1983-04-20 | 1984-11-06 | Yoshio Kamimura | Formation of colored original for block copy |
| JPS6246190U (en) * | 1985-09-03 | 1987-03-20 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0545942B2 (en) | 1993-07-12 |
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