Original plate for lithographic printing plate, lithographic printing plate manufacturing method, and lithographic printing method

A lithographic printing plate, original plate technology, applied in lithographic printing equipment, printing surface preparation, printing, etc., to achieve the effect of excellent ink retention

Pending Publication Date: 2022-02-15
FUJIFILM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Also, due to increasing concern for the global environment, environmental problems related to waste liquid accompanying wet processing such as developing processing have become apparent
[0005] Regarding the above-mentioned environmental problems, it is pointed to the simplification and non-processing of development or plate making

Method used

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  • Original plate for lithographic printing plate, lithographic printing plate manufacturing method, and lithographic printing method
  • Original plate for lithographic printing plate, lithographic printing plate manufacturing method, and lithographic printing method
  • Original plate for lithographic printing plate, lithographic printing plate manufacturing method, and lithographic printing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～ Embodiment 33 and comparative example 1～ comparative example 3

[1001]

[1002] The lithographic printing plate precursors of Examples 1 to 33 and Comparative Examples 1 to 3 were prepared by the following methods.

[1003] On the aluminum support described in Table 4 or Table 6, the dry coating amount is 20 mg / m 2 The undercoat layer coating solution described below was applied in the same manner to form an undercoat layer. On the undercoat layer, the following image recording layer coating solution (1) was bar-coated, and dried at 120° C. for 40 seconds to form a dry coating weight of 1.0 g / m 2 image recording layer.

[1004] Regarding a lithographic printing plate precursor having a protective layer (described as "non-outermost layer (with OC)" in the column of the position of the image recording layer in Table 3 or Table 5), the following protective layer was bar-coated on the image recording layer coating solution, and dried at 120°C for 60 seconds to form a dry coating weight of 0.15g / m 2 protective layer.

[1005]

[1006] A...

Embodiment 34～ Embodiment 39

[1134]

[1135] As the undercoat layer coating liquid, the coating liquid described in Table 8, the hydrophilic compound described in Table 8 and its addition amount were used. The infrared absorber of the counter anion described in , the electron-accepting polymerization initiator with the counter anion described in Table 8, the polymerizable compound described in Table 8, and the coupler described in Table 8, in addition , In the same manner as in Example 23, the lithographic printing plate precursors of Examples 34 to 39 were produced, respectively.

[1136]

[1137] Luxel PLATESETTER T-6000III manufactured by Fujifilm Corporation equipped with an infrared semiconductor laser, under the conditions of outer drum rotation speed 1,000rpm (revolutions per minute), laser output 70%, and resolution 2,400dpi (dot per inch) The obtained lithographic printing plate precursor was exposed. After the exposure treatment, the obtained lithographic printing plate was scratched by a s...

Embodiment 40～ Embodiment 45

[1152]

[1153] The lithographic printing plate precursors of Examples 40 to 45 were prepared by the following methods.

[1154] On the aluminum supports described in Table 10, the dry coating amount was 20 mg / m 2 The above-mentioned undercoat layer coating liquid was applied in a manner to form an undercoat layer. The following image recording layer coating solution (2) was bar-coated on the undercoat layer, and dried at 120°C for 40 seconds to form a dry coating weight of 1.0g / m 2 image-recording layer, thereby obtaining a lithographic printing original plate.

[1155] Using the obtained planographic printing plate precursor, various evaluations were performed in the same manner as in Example 23. Table 10 shows the evaluation results.

[1156]

[1157] ・Addition polymerization type resin described in Table 9: 0.240 parts (the amount that becomes the amount described in Table 9 in the obtained image recording layer)

[1158] ・Infrared absorber having a counter anion d...

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Abstract

Provided is an original plate for a lithographic printing plate that has an aluminum support and an image recording layer on the aluminum support, wherein the image recording layer includes an infrared absorber, a polymerization initiator, a polymerizable compound, and an addition polymerization type resin having a dispersible group, and where the capacitance Cp of the original plate for a lithographic printing plate is set as Cp(t)/Cp(20 seconds) = 0.95, t < 12 seconds is satisfied, or the capacitance Cp of the original plate for a lithographic printing plate satisfies Cp(0 seconds) > 400 nF, and also provided are a method for producing a lithographic printing plate and a lithographic printing method using the original plate for a lithographic printing plate. The capacitance Cp of the original plate for a lithographic printing plate is measured by bringing at least the measurement portion of the image recording layer into contact with a 2% by mass sodium chloride aqueous solution at 25 DEG C.

Description

technical field [0001] The invention relates to a lithographic printing plate original plate, a method for making a lithographic printing plate and a lithographic printing method. Background technique [0002] Generally, a lithographic printing plate is composed of an oleophilic image portion that receives ink during printing and a hydrophilic non-image portion that receives fountain solution. Lithographic printing is a method in which the lipophilic image portion of a lithographic printing plate is used as an ink receiving portion, and the hydrophilic non-image portion is used as a fountain solution receiving portion (non-ink ink) by utilizing the property that water and oily ink repel each other. Receiving part) produces a difference in the adhesion of ink on the surface of the lithographic printing plate, makes the ink land only on the image part, and then transfers the ink to a printed object such as paper for printing. [0003] In order to produce such a lithographic p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41N1/08B41N1/14B41N3/03B41C1/10G03F7/004G03F7/028G03F7/029G03F7/033G03F7/038G03F7/09G03F7/11
CPCB41N1/083B41N1/14B41N3/03B41C1/10G03F7/029G03F7/004G03F7/033G03F7/028G03F7/038G03F7/09G03F7/11B41C1/1016B41C2201/02B41C2201/14B41C2210/04B41C2210/08B41C2210/22B41C2210/24B41C2201/12B41C1/1025G03F7/0045
Inventor 阪口彬
Owner FUJIFILM CORP
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