JP2000056448A5 - - Google Patents
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- Publication number
- JP2000056448A5 JP2000056448A5 JP1999105328A JP10532899A JP2000056448A5 JP 2000056448 A5 JP2000056448 A5 JP 2000056448A5 JP 1999105328 A JP1999105328 A JP 1999105328A JP 10532899 A JP10532899 A JP 10532899A JP 2000056448 A5 JP2000056448 A5 JP 2000056448A5
- Authority
- JP
- Japan
- Prior art keywords
- image forming
- forming element
- aqueous alkaline
- lithographic printing
- heat mode
- 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
- 229920000642 polymer Polymers 0.000 description 4
- 238000005259 measurement Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 1
- 230000005660 hydrophilic surface Effects 0.000 description 1
- 229920003986 novolac Polymers 0.000 description 1
Description
【特許請求の範囲】
【請求項1】
親水性表面を有する平版印刷ベース上に、水性アルカリ性溶液中に可溶性のポリマーを含む第1層ならびに平版印刷ベースの第1層と同じ側の上の最上層を有し、最上層はIR−感受性で且つ水性アルカリ性現像液に関して非浸透性であり、該第1層及び該最上層は1つの同じ層であることができる平版印刷版の作製のためのヒートモード画像形成要素であって;該要素の表面が、露出され且つ水性アルカリ性現像液で処理されると、
a)画像形成要素の非露出領域と水性アルカリ性現像液の間の接触角が該現像液との接触の最初の1分間に最高で6°変化し;
b)画像形成要素の露出領域と水性アルカリ性現像液の間の接触角が該現像液との接触の最初の1分間に15°より大きく変化し;
c)画像形成要素の一方の側における非露出領域及び他方の側における露出領域の間の水性アルカリ性溶液との接触角における差が測定の開始時において10°以下である
ようなものであることを特徴とするヒートモード画像形成要素。
【請求項2】
画像形成要素の非露出領域と水性アルカリ性溶液の間の接触角が測定の開始時において少なくとも100°である請求項1に記載の平版印刷版の作製のためのヒートモード画像形成要素。
【請求項3】
接触の最初の1分間における画像形成要素の露出領域と水性アルカリ性現像液の間の接触角における変化が20°より大きい請求項1に記載の平版印刷版の作製のためのヒートモード画像形成要素。
【請求項4】
水性アルカリ性溶液中に可溶性のポリマーがノボラックポリマー又はポリヒドロキシスチレン単位を含有するポリマーである請求項1に記載の平版印刷版の作製のためのヒートモード画像形成要素。
【請求項5】
該画像形成要素がIR吸収性化合物を含有する請求項1に記載の平版印刷版の作製のためのヒートモード画像形成要素。
[Claims]
[Claim 1]
On a lithographic printing base with a hydrophilic surface, there is a first layer containing a polymer soluble in an aqueous alkaline solution and an uppermost layer on the same side as the first layer of the lithographic printing base, the uppermost layer being IR-sensitive. It is a heat mode image forming element for making a lithographic printing plate, which is impermeable to an aqueous alkaline developer and the first layer and the top layer can be one and the same layer; the element. When the surface of the surface is exposed and treated with an aqueous alkaline developer,
a) The contact angle between the unexposed area of the image forming element and the aqueous alkaline developer changes by up to 6 ° during the first minute of contact with the developer;
b) The contact angle between the exposed area of the image forming element and the aqueous alkaline developer changed by more than 15 ° during the first minute of contact with the developer;
c) The difference in contact angle between the unexposed area on one side and the exposed area on the other side of the image forming element with the aqueous alkaline solution is such that it is 10 ° or less at the start of the measurement. A characteristic heat mode image forming element.
2.
The heat mode image forming element for making a lithographic printing plate according to claim 1, wherein the contact angle between the unexposed region of the image forming element and the aqueous alkaline solution is at least 100 ° at the start of measurement.
3.
The heat mode image forming element for producing a lithographic printing plate according to claim 1, wherein the change in the contact angle between the exposed region of the image forming element and the aqueous alkaline developer in the first minute of contact is greater than 20 °.
4.
The heat mode image forming element for producing a lithographic printing plate according to claim 1, wherein the polymer soluble in an aqueous alkaline solution is a novolak polymer or a polymer containing polyhydroxystyrene units.
5.
The heat mode image forming element for producing a lithographic printing plate according to claim 1, wherein the image forming element contains an IR absorbing compound.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP19980201216 EP0950513B1 (en) | 1998-04-15 | 1998-04-15 | A heat mode sensitive imaging element for making positive working printing plates |
EP98201216.3 | 1998-04-15 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2000056448A JP2000056448A (en) | 2000-02-25 |
JP2000056448A5 true JP2000056448A5 (en) | 2006-06-15 |
Family
ID=8233605
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10532899A Pending JP2000056448A (en) | 1998-04-15 | 1999-04-13 | Heat home sensitive image forming element for production of positive printing plate |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0950513B1 (en) |
JP (1) | JP2000056448A (en) |
DE (1) | DE69802374T2 (en) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6143471A (en) * | 1998-03-10 | 2000-11-07 | Mitsubishi Paper Mills Limited | Positive type photosensitive composition |
US6447977B2 (en) * | 1998-04-15 | 2002-09-10 | Agfa-Gevaert | Heat mode sensitive imaging element for making positive working printing plates |
JP4137345B2 (en) * | 2000-06-05 | 2008-08-20 | 富士フイルム株式会社 | Planographic printing plate precursor |
US6649324B1 (en) | 2000-08-14 | 2003-11-18 | Kodak Polychrome Graphics Llc | Aqueous developer for lithographic printing plates |
US6555291B1 (en) * | 2000-08-14 | 2003-04-29 | Kodak Polychrome Graphics, Llc | Thermal digital lithographic printing plate |
US6613494B2 (en) | 2001-03-13 | 2003-09-02 | Kodak Polychrome Graphics Llc | Imageable element having a protective overlayer |
US6699636B2 (en) | 2001-12-12 | 2004-03-02 | Kodak Polychrome Graphics Llc | Imaging element comprising a thermally activated crosslinking agent |
EP3632695B1 (en) | 2017-05-31 | 2022-08-10 | FUJIFILM Corporation | Lithographic printing plate original plate, and method for producing lithographic printing plate |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1208415A (en) * | 1966-10-24 | 1970-10-14 | Agfa Gevaert Nv | Improvements relating to thermo-copying |
GB1245924A (en) * | 1967-09-27 | 1971-09-15 | Agfa Gevaert | Improvements relating to thermo-recording |
JPH0240659A (en) * | 1988-08-01 | 1990-02-09 | Fuji Photo Film Co Ltd | Developer for photosensitive planographic printing plate and method for developing the printing plate |
JPH0414481A (en) * | 1990-05-07 | 1992-01-20 | Oji Paper Co Ltd | Heat-sensitive recording material |
JP3814961B2 (en) * | 1996-08-06 | 2006-08-30 | 三菱化学株式会社 | Positive photosensitive printing plate |
DE69800847T3 (en) * | 1997-03-11 | 2006-06-29 | Agfa-Gevaert N.V. | Heat-sensitive recording element for producing positive-working planographic printing plates |
-
1998
- 1998-04-15 EP EP19980201216 patent/EP0950513B1/en not_active Expired - Lifetime
- 1998-04-15 DE DE1998602374 patent/DE69802374T2/en not_active Expired - Lifetime
-
1999
- 1999-04-13 JP JP10532899A patent/JP2000056448A/en active Pending
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