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Fountain solution composition for lithographic printing and heat-set offset rotary printing process

A lithographic printing and fountain solution technology, applied in printing, printing surface preparation, printing device and other directions, can solve the problem of not paying attention to the improvement of blanket ink accumulation, and achieve good printing performance, inhibit ink accumulation, and easy adjustment. Effect

Active Publication Date: 2009-04-15
FUJIFILM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, no attention was paid to the improvement of ink accumulation on the blanket

Method used

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  • Fountain solution composition for lithographic printing and heat-set offset rotary printing process
  • Fountain solution composition for lithographic printing and heat-set offset rotary printing process
  • Fountain solution composition for lithographic printing and heat-set offset rotary printing process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～8 and comparative example 1～9

[0129] Except for changing the diol compound according to the following Table 1, use equal mass and exactly the same operation to prepare various fountain solution compositions according to the following formulas. In this formulation, the unit is gram, and it is the addition amount in the case of adding water at the end and adjusting to 100g, and it has the same meaning as mass %.

[0130] Formulation of fountain solution composition (use solution) when used

[0131] Ingredients Amount

[0132] Propylene glycol mono-n-butyl ether 0.5g

[0133] Propylene glycol 0.5g

[0134] Glycol compound 0.3g of table 1

[0135] Carboxymethylcellulose 0.01g

[0136]Ammonium nitrate 0.05g

[0137] Citric acid 0.02g

[0138] 2,2-Dibromo-2-nitroethanol 0.002g

[0139] 2-Methyl-5-chloro-4-isothiazolin-3-one 0.002g

[0140] Benzotriazole 0.001g

[0141] Add water to reach 100g

[0142] For each fountain solution composition, a Lithron 26 printing machine manufactured by KOMORI Co., Ltd....

Embodiment 9～18

[0165] Exactly the same operation was carried out except that propylene glycol mono-n-butyl ether and propylene glycol in Example 6 were replaced with the compounds in Table 2 below. In Example 18, isopropanol was used and its addition amount was increased to 15 times (ie, 7.5%) that of the compound used in other examples (0.5%). In Example 18, unless the amount of isopropanol was increased in this way, even if the amount of water was increased, the ink would adhere to the non-image portion of the printed matter, and staining tended to occur. The results are shown in Table 2.

[0166] Table 2

[0167] Example

Compound 1

Compound 2

Blanket pile of ink

dot area

Reduction rate (%)

Feed roller contamination

6

Propylene glycol mono-n-butyl ether

Propylene Glycol

50

5

○

9

Ethylene glycol mono-n-butyl ether

Propylene Glycol

56

8

○

10

Ethylene glycol mo...

Embodiment 19～25

[0171] Exactly the same operation was carried out except that propylene glycol mono-n-butyl ether and propylene glycol in Example 5 were replaced with the compounds in Table 3 below. The results are shown in Table 3.

[0172] table 3

[0173] Example

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Abstract

The invention relates to a fountain solution composition for lithographic printing and a heatset offset rotary printing process. The invention provides a method of improving mackintosh pilling, particularly a method of improving the mackintosh pilling from viewpoints of the fountain solution composition. The aim is realized through the following means that: a fountain solution composition for lithographic printing is characterized by comprising at least one acyclic hydrocarbon diol compound, having 9 carbon atoms in total and two -OH groups, wherein the number of carbon atoms existing between said two -OH groups via minimal distance is from 2 to 6.

Description

technical field [0001] The present invention relates to lithographic fountain solution compositions, and more particularly to lithographic fountain solution compositions preferably used in offset printing methods, especially heat-set offset rotary printing methods. Background technique [0002] Lithographic printing is a printing method that cleverly utilizes the nature of immiscibility of water and oil. The printing layout is composed of areas that accept water and repel oily inks and areas that repel water and accept oily inks. The former is a non-image area, and the latter for the image area. The non-image area is wetted by the fountain solution, the interface chemical difference between the image area and the non-image area is enlarged, and the ink repellency of the non-image area and the ink receptivity of the image area are increased. [0003] A lithographic printing machine is usually an offset printing method. Ink and fountain solution are supplied to the plate, and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41N3/08B41M1/06
Inventor 配岛章光
Owner FUJIFILM CORP
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