JP2001166460A5 - - Google Patents
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- JP2001166460A5 JP2001166460A5 JP1999346731A JP34673199A JP2001166460A5 JP 2001166460 A5 JP2001166460 A5 JP 2001166460A5 JP 1999346731 A JP1999346731 A JP 1999346731A JP 34673199 A JP34673199 A JP 34673199A JP 2001166460 A5 JP2001166460 A5 JP 2001166460A5
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- printing plate
- lithographic printing
- positive photosensitive
- photosensitive layer
- photosensitive
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- 239000000463 material Substances 0.000 description 17
- 238000004519 manufacturing process Methods 0.000 description 16
- 230000001681 protective Effects 0.000 description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 229910052782 aluminium Inorganic materials 0.000 description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminum Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 5
- 238000003825 pressing Methods 0.000 description 4
- 239000000975 dye Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- PCDQPRRSZKQHHS-XVFCMESISA-N ({[({[(2R,3S,4R,5R)-5-(4-amino-2-oxo-1,2-dihydropyrimidin-1-yl)-3,4-dihydroxyoxolan-2-yl]methoxy}(hydroxy)phosphoryl)oxy](hydroxy)phosphoryl}oxy)phosphonic acid Chemical compound O=C1N=C(N)C=CN1[C@H]1[C@H](O)[C@H](O)[C@@H](COP(O)(=O)OP(O)(=O)OP(O)(O)=O)O1 PCDQPRRSZKQHHS-XVFCMESISA-N 0.000 description 2
- 239000011358 absorbing material Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000004090 dissolution Methods 0.000 description 2
- 238000007602 hot air drying Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229920002456 HOTAIR Polymers 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229920001684 low density polyethylene Polymers 0.000 description 1
- 239000004702 low-density polyethylene Substances 0.000 description 1
- 150000001247 metal acetylides Chemical class 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Description
【特許請求の範囲】
【請求項１】 支持体上にポジ型感光性組成物を塗設してなり、レーザーにより露光されるポジ型感光性平版印刷版であって、感光層の少なくとも対向する端部２辺が、未露光の状態でアルカリ現像液に可溶であることを特徴とするポジ型感光性平版印刷版。
【請求項２】 アルミニウム支持体上にポジ型感光性組成物を塗設してなり、レーザーにより露光されるポジ型感光性平版印刷版であって、感光層の少なくともアルミニウム支持体の圧延方向の端部２辺が、未露光の状態でアルカリ現像液に可溶であることを特徴とするポジ型感光性平版印刷版。
【請求項３】 ポジ型感光性組成物が、６００〜１３００ｎｍのレーザー光を吸収し熱を発生する光吸収材料及びアルカリ可溶性樹脂を含有することを特徴とする請求項１または２に記載のポジ型感光性平版印刷版。
【請求項４】 感光層の対向する端部２辺以外の部分が、未露光の状態で、アルカリ現像液に対する溶解速度が表面部から下層部に向って大となるように構成されていることを特徴とする請求項３に記載のポジ型感光性平版印刷版。
【請求項５】 ポジ型感光性組成物中に更に溶解抑止剤を含有することを特徴とする請求項３又は４に記載のポジ型感光性平版印刷版。
【請求項６】 支持体上にポジ型感光性組成物を塗布して感光層を形成した後、該感光層と、水分を１〜１０％含有する保護材とを重ね合わせて加熱下に保持する工程を有するレーザーにより露光されるポジ型感光性平版印刷版の製造方法において、該感光層の面積よりも該保護材の面積が小さいことを特徴とするポジ型感光性平版印刷版の製造方法。
【請求項７】 感光層と、水分を１〜１０％含有する保護材とを重ね合わせ加熱下に保持する工程において、帯状の感光層の幅手方向の端部２辺を該保護材で覆わないことを特徴とする請求項６に記載のポジ型感光性平版印刷版の製造方法。
【請求項８】 支持体上にポジ型感光性組成物を塗布して感光層を形成した後、所定の大きさに裁断し、感光層と、水分を１〜１０％含有する保護材とを重ね合わせて加熱下に保持する工程において、感光層の少なくとも対向する端部２辺を該保護材で覆わないことを特徴とする請求項６に記載のポジ型感光性平版印刷版の製造方法。
【請求項９】 アルミニウム支持体上にポジ型感光性組成物を塗布して感光層を形成した後、所定の大きさに裁断し、感光層と、水分を１〜１０％含有する保護材とを重ね合わせて加熱下に保持する工程を有するレーザーにより露光されるポジ型感光性平版印刷版の製造方法において、少なくともアルミニウム支持体の圧延方向における感光層の端部２辺を該保護材で覆わないこと特徴とするポジ型感光性平版印刷版の製造方法。
【請求項１０】 請求項１乃至５のポジ型感光性平版印刷版の刷版方法であって、回転ドラムの表面上に押さえ治具によって感光性平版印刷版の対向する両端面を固定して行う走査方式によるレーザー露光工程と現像工程を含む刷版方法。
【請求項１１】 請求項６乃至９の製造方法によって製造されたポジ型感光性平版印刷版の刷版方法であって、回転ドラムの表面上に押さえ治具によって感光性平版印刷版の対向する両端面を固定して行う走査方式によるレーザー露光工程と現像工程を含む刷版方法。
[Claims]
1. A positive photosensitive lithographic printing plate in which a positive photosensitive composition is coated on a support and exposed by a laser, and at least two opposite ends of the photosensitive layer are formed on the support. A positive photosensitive lithographic printing plate characterized by being soluble in an alkaline developer in an unexposed state.
2. A positive photosensitive lithographic printing plate in which a positive photosensitive composition is coated on an aluminum support and exposed by a laser, at least in the rolling direction of the aluminum support of the photosensitive layer. A positive photosensitive lithographic printing plate characterized in that two edges are soluble in an alkaline developer in an unexposed state.
3. The positive according to claim 1 or 2, wherein the positive photosensitive composition contains a light absorbing material that absorbs laser light of 600 to 1300 nm to generate heat and an alkali-soluble resin. Mold Photosensitive planographic printing plate.
4. The portion of the photosensitive layer other than the two opposing ends is configured such that the dissolution rate in an alkaline developer increases from the surface portion to the lower layer portion in an unexposed state. The positive photosensitive lithographic printing plate according to claim 3.
5. The positive photosensitive lithographic printing plate according to claim 3, further comprising a dissolution inhibitor in the positive photosensitive composition.
6. A positive photosensitive composition is applied onto a support to form a photosensitive layer, and then the photosensitive layer and a protective material containing 1 to 10% of water are superposed and held under heating. in the positive photosensitive lithographic printing plate production method of which is exposed by a laser having a step of manufacturing method of positive photosensitive lithographic printing plate, wherein the area of said protective material is smaller than the area of the photosensitive layer ..
7. In the step of superimposing the photosensitive layer and the protective material containing 1 to 10% of water and holding the photosensitive layer under heating, the two sides of the strip-shaped photosensitive layer in the width direction are covered with the protective material. The method for manufacturing a positive photosensitive lithographic printing plate according to claim 6, wherein the printing plate is not present.
8. A positive photosensitive composition is applied onto a support to form a photosensitive layer, which is then cut into a predetermined size to form a photosensitive layer and a protective material containing 1 to 10% of water. The method for producing a positive photosensitive lithographic printing plate according to claim 6, wherein at least two opposite ends of the photosensitive layer are not covered with the protective material in the step of superimposing and holding the photosensitive layer under heating.
9. A positive photosensitive composition is applied onto an aluminum support to form a photosensitive layer, which is then cut into a predetermined size to provide a photosensitive layer and a protective material containing 1 to 10% of water. In the method for producing a positive photosensitive lithographic printing plate exposed by a laser, which comprises a step of superimposing and holding the sheets under heating, at least two edges of the photosensitive layer in the rolling direction of the aluminum support are covered with the protective material. A method for manufacturing a positive photosensitive lithographic printing plate, which is characterized by the absence.
10. The method for printing a positive photosensitive lithographic printing plate according to claims 1 to 5, wherein the facing end surfaces of the photosensitive lithographic printing plate are fixed on the surface of a rotating drum by a pressing jig. A printing plate method including a laser exposure step and a developing step by a scanning method.
11. A printing plate method for a positive photosensitive lithographic printing plate manufactured by the manufacturing method according to claims 6 to 9, wherein the photosensitive lithographic printing plate is opposed to the surface of a rotating drum by a pressing jig. A printing plate method including a laser exposure process and a developing process by a scanning method in which both end faces are fixed.
このようなベタ印刷の問題を防ぐためには、ポジＣＴＰ版において、押さえ治具によって固定される両端面部に感光層を有していないものを作成する方法が考えられる。これらは例えば、両端部にもともと感光層を塗設しない印刷版を作成するか、または感光層を塗設した後に、両端部の感光層を除去する方法が考えられる。また、本出願人は現像工程に先立って、未露光の両端部が現像液に溶解するように両端部を加圧処理等の物理的処理を加える方法を提案している（特願平１１−１７６２８１）。
しかしながらこのような両端部の処理には通常の印刷版の製造工程に加えて特別な処理工程を付加する必要がり、さらなる生産性の向上が望まれていた。
In order to prevent such a problem of solid printing, it is conceivable to prepare a positive CTP plate that does not have a photosensitive layer on both end faces fixed by a pressing jig. For these, for example, a printing plate in which the photosensitive layers are not originally applied to both ends can be prepared, or a method of removing the photosensitive layers at both ends after applying the photosensitive layers can be considered. In addition, the applicant has proposed a method of applying physical treatment such as pressure treatment to both ends so that the unexposed ends are dissolved in the developer prior to the developing step (Japanese Patent Application No. 11-). 176281).
However, in such treatment of both ends, it is necessary to add a special treatment step in addition to the normal printing plate manufacturing process, and further improvement in productivity has been desired.
【０００５】
【発明が解決しようとする課題】
本発明の目的は、感光性平版印刷版の両端面の未露光部により不要な画像が印刷物に形成されないように改良されたポジ型感光性平版印刷版及びその製造方法を提供するものである。
0005
[Problems to be Solved by the Invention]
An object of the present invention is to provide an improved manufacturing method of the positive photosensitive lithographic printing plate and its so unnecessary image is not formed on a printed material by the unexposed portions of the end surfaces of the photosensitive lithographic printing plate is there.
【０００６】
【課題を解決するための手段】
本発明の要旨は、レーザーにより露光されるポジ型感光性平版印刷版であって、感光層の少なくとも対向する端部が、未露光の状態でアルカリ現像液に可溶であることを特徴とするポジ型感光性平版印刷版に存する。
本発明の別の要旨は、支持体上にポジ型感光性組成物を塗布して感光層を形成した後、該感光層と、水分を１〜１０％含有する保護材とを重ね合わせて加熱下に保持する工程を有するレーザーにより露光されるポジ型感光性平版印刷版の製造方法において、該感光層の面積よりも該保護材の面積が小さいことを特徴とするポジ型感光性平版印刷版の製造方法に存する。
また、本発明の別の要旨は、上記ポジ型感光性平版印刷版の刷版方法であって、回転ドラムの表面上に押さえ治具によって感光性平版印刷版の対向する両端面を固定して行う走査方式によるレーザー露光工程と現像工程を含む刷版方法に存する。
0006
[Means for solving problems]
The gist of the present invention is a positive photosensitive lithographic printing plate exposed by a laser, wherein at least opposite ends of the photosensitive layer are soluble in an alkaline developer in an unexposed state. It exists in positive photosensitive lithographic printing plates.
Another gist of the present invention is to apply a positive photosensitive composition on a support to form a photosensitive layer, and then heat the photosensitive layer by superimposing a protective material containing 1 to 10% of water. In a method for producing a positive photosensitive lithographic printing plate exposed by a laser having a step of holding underneath, a positive photosensitive lithographic printing plate characterized in that the area of the protective material is smaller than the area of the photosensitive layer. It exists in the manufacturing method of.
Further, another gist of the present invention is the printing plate method of the positive type photosensitive lithographic printing plate, in which both end surfaces of the photosensitive lithographic printing plate facing each other are fixed on the surface of the rotating drum by a pressing jig. It exists in a printing plate method including a laser exposure step and a developing step by a scanning method to be performed.
光吸収材料は、これらの原理及び照射するレーザー光の波長に応じて選択することができ、公知のものが使用できるが、ＣＴＰ版の露光光源としては、６００〜１３００ｎｍの近赤外線を用いることが多いので、本発明のポジ型感光性平版印刷版は、特に光吸収剤が６００〜１３００ｎｍの近赤外線を吸収して熱を発生する光熱変換物質であることが好ましい。斯かる化合物としては、波長域６００〜１３００ｎｍの近赤外線領域の一部または全部に吸収帯を有する有機または無機の染顔料、有機色素、金属、金属酸化物、金属炭化物、金属ホウ化物などが挙げられる。これらの中では、光吸収色素が特に有効である。光吸収色素は、上記波長域の光を効率よく吸収するが、紫外線領域の光は殆ど吸収しないか、吸収しても実質的に感応せず、従って、白色灯に含まれる様な弱い紫外線によってはポジ型感光性組成物を変成させる作用のない化合物である。 The light absorbing material can be selected according to these principles and the wavelength of the laser light to be irradiated, and known materials can be used. However, as the exposure light source of the CTP plate, near infrared rays of 600 to 1300 nm can be used. Since there are many, the positive photosensitive slab printing plate of the present invention is particularly preferably a photothermal converter in which the light absorber absorbs near infrared rays of 600 to 1300 nm to generate heat. As to such compounds, organic or having an absorption band in a part or all of the near-infrared region in the wavelength range 600~1300nm dye pigments inorganic, organic pigments, metals, metal oxides, metal carbides, metal borides Can be mentioned. Of these, light absorbing dyes are particularly effective. The light-absorbing dye efficiently absorbs the light in the above wavelength range, but hardly absorbs the light in the ultraviolet region, or is substantially insensitive to the absorption, and therefore, due to the weak ultraviolet rays such as those contained in the white lamp. Is a compound that does not have the effect of modifying the positive photosensitive composition.
次に、本発明のポジ型感光性平版印刷版の製造方法について、好ましい実施態様を例にとって説明する。
本発明のポジ型感光性平版印刷版の製造方法としては、少なくとも対向する端部２辺が、未露光の状態でアルカリ現像液に可溶となるように製造することができれば何れの方法を用いることができるが、好ましくは、支持体上にポジ型感光性組成物を塗布して感光層を形成した後、該感光層と、水分を１〜１０％含有する保護材とを重ね合わせて加熱下に保持する工程において、感光層の面積よりも保護材の面積が小さいことを特徴とした製造方法が用いられる。
熱の作用によりアルカリ溶解性が変化するようなポジ型感光性組成物においては、露光部と未露光部の溶解性の差を十分に確保することが重要な技術要素となっている。この溶解性の差を発現させる手段の一つとして、本出願人は、レーザーによって露光されるポジ型感光性平版印刷版の製造方法に係わる出願（特願平１１−２１１９５７号）において、好ましい実施態様として、支持体上に感光層が形成された印刷版を、水分を含有する保護材と重ね合わせて加熱下に保持する製造方法を提案した。
Next, a method for producing a positive photosensitive lithographic printing plate of the present invention will be described by taking a preferred embodiment as an example.
As a method for producing a positive photosensitive lithographic printing plate of the present invention, any method is used as long as it can be produced so that at least two opposite ends are soluble in an alkaline developer in an unexposed state. However, preferably, after applying a positive photosensitive composition on the support to form a photosensitive layer, the photosensitive layer and a protective material containing 1 to 10% of water are superposed and heated. In the step of holding underneath, a manufacturing method characterized in that the area of the protective material is smaller than the area of the photosensitive layer is used.
In the positive photosensitive composition as alkali solubility More action of heat changes, the difference in solubility of the exposed and unexposed areas is possible to sufficiently secure is an important technical element. As one of the means for expressing this difference in solubility, the applicant has preferably carried out an application relating to a method for producing a positive photosensitive lithographic printing plate exposed by a laser (Japanese Patent Application No. 11-21957). As an embodiment, a manufacturing method has been proposed in which a printing plate having a photosensitive layer formed on a support is superposed on a protective material containing water and held under heating.
実施例２
上記成分よりなる感光液を前述の方法で作製したアルミニウム板上にロールコータ−で幅手１０３０mmに対し全面塗布し、熱風乾燥炉にて３５℃ ３３秒間乾燥させ、２熱風乾燥炉にて６０℃ ４３秒間乾燥させ２０ｍｇ／ｄｍ2 の感光性層を設け、続いて長さ８００mmに断裁し３００枚堆積した。
ついで図２感光層面側にアルミ支持体の圧延方向に対し垂直な辺の両端から１０mm短くなるよう水分４．５％を含有するラミネート保護紙（材質 パルプ材を原料とした紙 紙２７ｇ／ｍ2 ラミネート材料 ＬＤＰＥ 厚さ８μｍ）をラミネート面側を感光層面側へ接触するよう供給し、樹脂パレットの上に３００枚堆積した。
続いて長さ８００mmに断裁し、樹脂性パレットに３００枚堆積した。続いて表面をシュリンクフィルムにて全面覆い、熱風をかけて堆積版に密着させた。続いて室温６０℃にて２４時間保持し、感光性平板印刷版を得た。
Example 2
A photosensitive liquid composed of the above components is applied to the entire surface of an aluminum plate prepared by the above method with a roll coater for a width of 1030 mm, dried in a hot air drying oven at 35 ° C. for 33 seconds, and dried in a hot air drying oven at 60 ° C. It was dried for 43 seconds to provide a 20 mg / dm 2 photosensitive layer, which was then cut to a length of 800 mm and 300 sheets were deposited.
Next, Fig. 2 Laminate protective paper containing 4.5% of water so that it is 10 mm shorter from both ends of the side perpendicular to the rolling direction of the aluminum support on the photosensitive layer surface side (material: paper made of pulpwood 27 g / m 2) Laminating material (LDPE thickness 8 μm) was supplied so that the laminated surface side was in contact with the photosensitive layer surface side, and 300 sheets were deposited on the resin pallet .
Subsequently, it was cut to a length of 800 mm, and 300 sheets were deposited on a resin pallet. Subsequently, the surface was entirely covered with a shrink film, and hot air was blown to bring it into close contact with the sedimentary plate. Subsequently, it was kept at room temperature of 60 ° C. for 24 hours to obtain a photosensitive lithographic printing plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34673199A JP4458384B2 (en) | 1999-12-06 | 1999-12-06 | Positive photosensitive lithographic printing plate, production method thereof and printing plate method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34673199A JP4458384B2 (en) | 1999-12-06 | 1999-12-06 | Positive photosensitive lithographic printing plate, production method thereof and printing plate method |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2001166460A JP2001166460A (en) | 2001-06-22 |
| JP2001166460A5 true JP2001166460A5 (en) | 2006-11-30 |
| JP4458384B2 JP4458384B2 (en) | 2010-04-28 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP34673199A Expired - Fee Related JP4458384B2 (en) | 1999-12-06 | 1999-12-06 | Positive photosensitive lithographic printing plate, production method thereof and printing plate method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4458384B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100900610B1 (en) | 2004-07-22 | 2009-06-02 | 간사이 페인트 가부시키가이샤 | Positive resin composition of near?infrared?ray activation type, and the mathod for forming a pattern thereof |
| JP4684685B2 (en) * | 2005-03-03 | 2011-05-18 | 富士フイルム株式会社 | Photosensitive lithographic printing plate and method for producing the same |
| CN107206828B (en) * | 2015-02-13 | 2019-10-25 | 富士胶片株式会社 | Original edition of lithographic printing plate, its manufacturing method and the printing process using it |
-
1999
- 1999-12-06 JP JP34673199A patent/JP4458384B2/en not_active Expired - Fee Related
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