JPH01154066A - Planographic printing plate - Google Patents
Planographic printing plateInfo
- Publication number
- JPH01154066A JPH01154066A JP31275587A JP31275587A JPH01154066A JP H01154066 A JPH01154066 A JP H01154066A JP 31275587 A JP31275587 A JP 31275587A JP 31275587 A JP31275587 A JP 31275587A JP H01154066 A JPH01154066 A JP H01154066A
- Authority
- JP
- Japan
- Prior art keywords
- ink
- printing
- side wall
- image area
- film thickness
- 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.)
- Pending
Links
- 238000007639 printing Methods 0.000 title claims abstract description 38
- 239000011347 resin Substances 0.000 claims abstract description 17
- 229920005989 resin Polymers 0.000 claims abstract description 17
- 229920002379 silicone rubber Polymers 0.000 claims description 14
- 239000004945 silicone rubber Substances 0.000 claims description 14
- 125000000664 diazo group Chemical group [N-]=[N+]=[*] 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 239000000126 substance Substances 0.000 claims 2
- SOCTUWSJJQCPFX-UHFFFAOYSA-N dichromate(2-) Chemical compound [O-][Cr](=O)(=O)O[Cr]([O-])(=O)=O SOCTUWSJJQCPFX-UHFFFAOYSA-N 0.000 claims 1
- 239000005871 repellent Substances 0.000 claims 1
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 239000000758 substrate Substances 0.000 description 14
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 5
- 229910052782 aluminium Inorganic materials 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 3
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000010017 direct printing Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 239000012046 mixed solvent Substances 0.000 description 1
- 238000007645 offset printing Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/10—Apparatus or processes for manufacturing printed circuits in which conductive material is applied to the insulating support in such a manner as to form the desired conductive pattern
- H05K3/12—Apparatus or processes for manufacturing printed circuits in which conductive material is applied to the insulating support in such a manner as to form the desired conductive pattern using thick film techniques, e.g. printing techniques to apply the conductive material or similar techniques for applying conductive paste or ink patterns
Landscapes
- Printing Plates And Materials Therefor (AREA)
- Photosensitive Polymer And Photoresist Processing (AREA)
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、オフセット印刷あるいは直刷り印刷に使用す
る平版印刷版に関する。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a lithographic printing plate used in offset printing or direct printing.
従来の技術
従来、この種の平版印刷版は第４図に示すようにアルミ
ニウム板などの基板１の上に感光性樹脂層２とシリコー
ンゴム層３を形成した後、この上にマスク（図示せず）
を重ね合わせてから露光・現像することにより、感光性
樹脂層２の上の所定の位置にだけシリコーンゴム層３を
形成した構造になっていた。このシリコーンゴム層３は
インキ反撥性を有するため非画線部４となり、シリコー
ンゴム層３が剥離して形成されたくぼみ６はその底面の
感光性樹脂層２が親インキ性を有するため画線部６とな
る。Conventionally, this type of lithographic printing plate has been manufactured by forming a photosensitive resin layer 2 and a silicone rubber layer 3 on a substrate 1 such as an aluminum plate, as shown in FIG. figure)
By superimposing them and then exposing and developing them, the structure was such that the silicone rubber layer 3 was formed only at a predetermined position on the photosensitive resin layer 2. Since this silicone rubber layer 3 has ink repellency, it becomes a non-image area 4, and the recess 6 formed by peeling off the silicone rubber layer 3 forms an image area because the photosensitive resin layer 2 on the bottom surface has ink affinity. This will be part 6.
したがって、この版面にインキつけローラ（図示せず）
によりインキを転移させると第６図に示すように画線部
６を形成するくぼみ６の中にのみインキ７が付着する。Therefore, an inking roller (not shown) is applied to this printing plate.
When the ink is transferred, the ink 7 adheres only to the depressions 6 forming the image area 6, as shown in FIG.
しかしながら、画線部６を形成するくぼみ６の側壁面８
はシリコーンゴム層３であるため、インキ７は反撥され
、くぼみ６の側壁面８上にインキ７が付着しなかった。However, the side wall surface 8 of the recess 6 forming the image area 6
Since the silicone rubber layer 3 was the silicone rubber layer 3, the ink 7 was repelled and the ink 7 did not adhere to the side wall surface 8 of the recess 6.
そのため、画線部６を形成するくぼみ６内部のインキ７
の膜厚分布は、第６図に示したように、画線部局辺で薄
く、画線部中央で厚くなっていた。この状態で転写体（
図示せず）を上記版面に押しつければ、画線部６を形成
するくぼみ６内部のインキ７が転写体表面に転移する。Therefore, the ink 7 inside the recess 6 forming the image area 6 is
As shown in FIG. 6, the film thickness distribution was thinner at the edges of the image area and thicker at the center of the image area. In this state, the transfer body (
(not shown) is pressed against the printing plate, the ink 7 inside the depressions 6 forming the image area 6 is transferred to the surface of the transfer body.
そして、この転写体をガラス板などの被印刷基板９の表
面に押しつければ、第６図に示すように、印刷版の画線
部６を形成するくぼみ６内部のインキ膜厚分布７′が相
似的に被印刷基板９の表面上に印刷されていた。When this transfer body is pressed against the surface of the printing substrate 9 such as a glass plate, the ink film thickness distribution 7' inside the depressions 6 forming the image areas 6 of the printing plate is changed as shown in FIG. It was printed on the surface of the printed substrate 9 in a similar manner.
発明が解決しようとする問題点
このように、従来の平版印刷版の構造では、画線部を形
成するくぼみの側壁面がインキ反撥性を有するため、画
線部に付着したインキの膜厚分布は画線部の周辺で薄く
、画線部中央で厚くなっていた。その結果、被印刷基板
上に転移したインキの膜厚も画素の周辺部で薄く、中央
部で厚くなり一様な膜厚の印刷を行うことができなかっ
た。Problems to be Solved by the Invention As described above, in the structure of conventional planographic printing plates, the side wall surfaces of the depressions forming the image area have ink repellency, so that the film thickness distribution of ink adhering to the image area is reduced. was thinner around the image area and thicker at the center of the image area. As a result, the film thickness of the ink transferred onto the printing substrate is thinner at the periphery of the pixel and thicker at the center, making it impossible to print with a uniform film thickness.
そこで、本発明は前記従来の問題点を解消するものであ
り、画線部を形成するくぼみの内部に蓄えられるインキ
の膜厚を一様にすることにより、被印刷基板に印刷され
るインキの膜厚を一様にすることかできる平版印刷版を
提供するものである。Therefore, the present invention solves the above-mentioned conventional problems, and by making the thickness of the ink accumulated inside the recesses forming the image area uniform, the thickness of the ink printed on the printed substrate can be improved. The present invention provides a lithographic printing plate that can have a uniform film thickness.
問題点を解決するための手段
本発明はインキ反撥性を有する非画線部と親インキ性を
有する画線部で構成し、前記画線部のくぼみの側壁面上
に親インキ層を形成したものである。Means for Solving the Problems The present invention comprises a non-image area having ink repellency and an image area having ink affinity, and an ink affinity layer is formed on the side wall surface of the recess of the image area. It is something.
作用
画線部を形成するくぼみの側壁面上に親インキ性の層を
設けたことにより、インキはくぼみの側壁で反撥される
ことなく、くぼみ内部に一様膜厚で充満することになる
。その結果、上記版面に押しつけた転写体表面に転移す
るインキの膜厚は均一化し、さらに上記転写体を被印刷
基板に押しつけたときに印刷されるインキの膜厚を均一
化することが可能となる。また、被印刷基板上に印刷さ
れたインキ膜の端部の膜厚が従来よりも増加することに
なり、印刷パターンの輪郭が明瞭となる。By providing an ink-philic layer on the side wall surface of the recess forming the active image area, ink is not repelled by the side wall of the recess, and the inside of the recess is filled with a uniform film thickness. As a result, the thickness of the ink transferred to the surface of the transfer body pressed against the printing plate becomes uniform, and it is also possible to uniformize the thickness of the ink that is printed when the transfer body is pressed against the printing substrate. Become. Furthermore, the thickness of the ink film printed on the printed substrate at the end is increased compared to the conventional method, and the outline of the printed pattern becomes clearer.
実施例
以下、本発明の一実施例を添付図面にもとづいて説明す
る。第１図に示すように、アルミニウム基板１ｏの上に
ジアゾ感光性樹脂層１１を一様厚さに形成し、さらにこ
の上の所定の位置にシリコーンゴム層１２を一様厚さに
形成している。このシリコーンゴム層１２はインキ反撥
性を有するため非画線部１３となり、シリコーンゴム層
１３のないくぼみ１４の底面１６はジアゾ感光性樹脂層
１１が親インキ性を有するため画線部１６となる。Embodiment Hereinafter, one embodiment of the present invention will be described based on the accompanying drawings. As shown in FIG. 1, a diazo photosensitive resin layer 11 is formed to a uniform thickness on an aluminum substrate 1o, and a silicone rubber layer 12 is further formed to a uniform thickness at a predetermined position on this. There is. This silicone rubber layer 12 has ink repellency, so it becomes a non-image area 13, and the bottom surface 16 of the depression 14, where there is no silicone rubber layer 13, becomes an image area 16 because the diazo photosensitive resin layer 11 has ink affinity. .
さらに、印刷に使用するＵＶ硬化インキをメチルエチル
ケトン、トルエン、イソプロピルアルコール等の混合溶
剤で溶解した低粘度溶液を、スピンコータ等を用いて上
記版全面にシリコーンゴム層１２の厚さよりも薄く（膜
厚１μｍ以下）塗布し、乾燥させた後、画線部１６のみ
を露光し、現像することにより、画線部１６を形成する
くぼみ１４の底面１６および側壁面１７上に印刷に使用
するインキと同材質の感光性樹脂層１８を形成している
。Furthermore, a low viscosity solution prepared by dissolving the UV curable ink used for printing in a mixed solvent such as methyl ethyl ketone, toluene, and isopropyl alcohol is coated on the entire surface of the plate using a spin coater or the like to a thickness thinner than the silicone rubber layer 12 (film thickness 1 μm). (below) After coating and drying, only the image area 16 is exposed and developed, so that the same material as the ink used for printing is applied on the bottom surface 16 and side wall surface 17 of the depression 14 that forms the image area 16. A photosensitive resin layer 18 is formed.
次に、この一実施例の構成における作用を説明する。版
面にインキを転移させた場合、くぼみ１４の側壁面１７
上に親インキ性を有する感光性樹脂層１８を形成したこ
とにより、第２図に示すように、インキ１９はくぼみ１
４の側壁面１７で反撥されることなく、くぼみ１４の内
部にほぼ一様厚さで充満することになる。このため、上
記版を用いて被印刷基板２ｏに印刷を行った場合には、
印刷パターンのインキ膜端部でのインキ膜厚が従来のよ
うに薄くなることはなく、第３図に示すように、印刷面
全面にわたってインキの膜厚分布を均一化することがで
きる。また、印刷パターンのインキ膜端部のインキ膜厚
が厚くなることから、インキ膜と基板間の界面がはっき
りとした明瞭な印刷を行うことができる。Next, the operation of the configuration of this embodiment will be explained. When the ink is transferred to the printing plate, the side wall surface 17 of the depression 14
By forming the ink-philic photosensitive resin layer 18 on top, the ink 19 can be absorbed into the depressions 1 as shown in FIG.
The inside of the recess 14 is filled with a substantially uniform thickness without being repelled by the side wall surface 17 of the recess 14. Therefore, when printing on the printing substrate 2o using the above-mentioned plate,
The ink film thickness at the end of the ink film of the printed pattern does not become thinner as in the conventional case, and as shown in FIG. 3, the ink film thickness distribution can be made uniform over the entire printing surface. Further, since the ink film thickness at the end of the ink film of the printing pattern is thicker, it is possible to perform clear printing with a clear interface between the ink film and the substrate.
上記実施例では、〈ぼみ１４の底面１６および側壁面１
７上に、印刷に使用するインキと同材質の感光性樹脂層
１８を形成したため、版のインキに対するなじみが非常
に良く、版上へのインキの着肉が非常に容易である。な
お、〈ぼみ１４の側壁面１７上にのみ感光性樹脂層１８
を形成しても同様の効果を得る。In the above embodiment, <the bottom surface 16 of the recess 14 and the side wall surface 1
Since the photosensitive resin layer 18 made of the same material as the ink used for printing is formed on the printing plate 7, the ink of the printing plate is very compatible with the ink, and the ink can be applied onto the printing plate very easily. In addition, <the photosensitive resin layer 18 only on the side wall surface 17 of the recess 14
A similar effect can be obtained by forming .
さらに、上記実施例では、アルミニウム基板１ｏの上に
ジアゾ感光性樹脂層１１およびシリコーンゴム層１２を
形成したが、アルミニウム基板１０上に感光性シリコー
ンゴム層の１層だけを形成した後、くぼみ１４の側壁面
１７上に親インキ性の感光性樹脂層を形成しても良い。Furthermore, in the above embodiment, the diazo photosensitive resin layer 11 and the silicone rubber layer 12 were formed on the aluminum substrate 1o, but after forming only one layer of the photosensitive silicone rubber layer on the aluminum substrate 10, the recesses 14 were formed. An ink-philic photosensitive resin layer may be formed on the side wall surface 17 of.
発明の効果
以上のように、本発明の平版印刷版は、画線部のくぼみ
の側壁面上に親インキ層を形成したものであるから、印
刷されるインキの膜厚分布を膜全面にわたって均一化す
ることができ、インキと被印刷基板間の界面がはっきり
とした印刷を行うことができる。Effects of the Invention As described above, since the lithographic printing plate of the present invention has an ink-friendly layer formed on the side wall surface of the recess in the image area, the thickness distribution of the printed ink can be made uniform over the entire surface of the film. It is possible to print with a clear interface between the ink and the printed substrate.
第１図は本発明の一実施例の平版印刷版の縦断面図、第
２図は第１図に示した版上にインキを転移させた状態図
、第３図は第２図に示した版を用いて印刷を行った場合
のインキ膜厚分布図、第４図は従来例の平版印刷版の縦
断面図、第６図は第４図に示した版上にインキを転移さ
せた状態図、第６図は第６図に示した版を用いて印刷を
行った場合のインキ膜厚分布図である。
１０・・°゛°°°°アルミニウム基板・・・パ・ジア
ゾ感光性樹脂層、１２・・・・・・シリコーンゴム層、
１４・・・・・・くぼみ、１７・・・・・・側壁面、１
８・・・・−・感光性樹脂層。
代理人の氏名 弁理士 中 尾 敏 男 ほか１名第２
図
第３図
第５図
！
第６図FIG. 1 is a vertical cross-sectional view of a lithographic printing plate according to an embodiment of the present invention, FIG. 2 is a diagram showing the state in which ink is transferred onto the plate shown in FIG. 1, and FIG. 3 is a diagram showing the state shown in FIG. 2. An ink film thickness distribution diagram when printing is performed using a plate, Figure 4 is a longitudinal cross-sectional view of a conventional lithographic printing plate, and Figure 6 is a state in which ink has been transferred onto the plate shown in Figure 4. 6 is an ink film thickness distribution diagram when printing is performed using the plate shown in FIG. 6. 10...°゛°°°°Aluminum substrate...Padiazo photosensitive resin layer, 12...Silicone rubber layer,
14...Indentation, 17...Side wall surface, 1
8...Photosensitive resin layer. Name of agent: Patent attorney Toshio Nakao and 1 other person 2nd
Figure 3 Figure 5! Figure 6
Claims (3)
する画線部からなり、前記画線部のくぼみの側壁面上に
親インキ層を形成した平版印刷版。(1) A lithographic printing plate comprising a non-image area having ink repellency and an image area having ink affinity, and an ink affinity layer is formed on the side wall surface of the recess of the image area.
物質として印刷に使用するインキと同材質の樹脂を用い
た特許請求の範囲第１項記載の平版印刷版。(2) The lithographic printing plate according to claim 1, wherein a resin having the same material as the ink used for printing is used as the material of the ink-friendly layer formed on the side wall surface of the image area recess.
は重クロム酸塩感光性樹脂、インキ反撥性物質としてシ
リコーンゴムを用いた特許請求の範囲第１項記載の平版
印刷版。(3) The lithographic printing plate according to claim 1, wherein a diazo photosensitive resin or a dichromate photosensitive resin is used as the ink-philic substance, and a silicone rubber is used as the ink-repellent substance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31275587A JPH01154066A (en) | 1987-12-10 | 1987-12-10 | Planographic printing plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31275587A JPH01154066A (en) | 1987-12-10 | 1987-12-10 | Planographic printing plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01154066A true JPH01154066A (en) | 1989-06-16 |
Family
ID=18033033
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP31275587A Pending JPH01154066A (en) | 1987-12-10 | 1987-12-10 | Planographic printing plate |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01154066A (en) |
-
1987
- 1987-12-10 JP JP31275587A patent/JPH01154066A/en active Pending
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