Lithographic printing original plate, layered body of lithographic printing original plates, and method for producing lithographic printing plate
A lithographic printing plate and laminate technology, applied in printing, printing process, printing plate and other directions, can solve problems such as rising cost, poor peeling of lining paper, etc., and achieve the effect of excellent scratch resistance
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Embodiment 1～ Embodiment 36 and comparative example 1 and comparative example 2
[0495]
[0496] The support body was manufactured by the method similar to paragraph 0224-0297 of international publication 2015 / 152209. This support was used in all Examples and Comparative Examples.
[0497]
[0498] 〔Binder Polymer P1-1〕
[0499] The binder polymer P1-1 was synthesized by the same method as described in paragraph 0221 of Japanese Patent No. 6243010, thereby obtaining the binder polymer P1-1 having the constituent units shown below .
[0500] In addition, in the following structural units, the subscript of a parenthesis represents content (molar ratio) of each structural unit. The following are the same.
[0501] [chemical formula 18]
[0502]
[0503] 〔Binder polymer P2-1〕
[0504] As the binder polymer P2-1, a binder polymer (commercially available) (manufactured by Sumitomo Bakelite Co., Ltd., trade name; SUMILITERESIN PR54046) having the following structural units was used.
[0505] [chemical formula 19]
[0506]
[0507] 〔Binder polymer...
Embodiment 37
[0555]
[0556] After applying the following underlayer-forming composition (I) on the same supports as those in Examples 1 to 36 and Comparative Examples 1 and 2 above by using a wire bar, dry them in a drying oven at 150°C. After drying for 40 seconds and coating so that the coating amount of the specific binder polymer becomes the amount described in Table 3, after forming the lower layer, the upper layer-forming coating liquid composition (I) with the following composition becomes: 0.22g / m 2 After coating with a wire-wound bar, drying was performed at 150°C for 40 seconds. A lower layer and an upper layer were provided, and further an overcoat layer was provided, whereby the lithographic printing plate precursor of Example 37 was obtained.
[0557] [Coating liquid composition for lower layer formation (I)]
[0558] - Specific binder polymers listed in Table 3: Amounts listed in Table 3
[0559] ・Infrared absorber (IR pigment (1): the above structure): 0.045 parts
[...
Embodiment 38
[0581] The above-mentioned underlayer-forming composition (I) was applied to the same support as in the above-mentioned Examples 1 to 36 and Comparative Examples 1 and 2 using a wire bar, and then dried in a drying oven at 150°C. Apply for 40 seconds so that the coating amount of the specific binder polymer becomes the amount described in Table 3. After setting the lower layer, use the following composition in the upper layer-forming coating liquid composition (II) as shown in Table 3. The particles described in 3 were coated with a wire rod so that the in-plane density described in Table 3 was dried at 150°C for 40 seconds to obtain an image with a lower layer and an upper layer. The lithographic printing plate precursor of Example 38 of the recording layer.
[0582] [Coating liquid composition for upper layer formation (II)]
[0583] Novolac resin (m-cresol / p-cresol / phenol=3 / 2 / 5, weight average molecular weight 8,000): 0.34 parts
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