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Planography strut attachment, mfg. method for original plate of planography printing plate and planography printing plate

A technology of lithographic printing plates and supports, applied in lithographic printing equipment, preparation of printing surfaces, printing, etc., to achieve good printing resistance

Inactive Publication Date: 2007-10-31
FUJIFILM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] However, the purpose of the method described in the above-mentioned publication is to improve the stain resistance and printing resistance of the so-called conventional positive image recording layer, but it has not been able to do so for the image recording layer containing an infrared absorbing agent that is prone to staining during printing. Said stain resistance and print resistance are good

Method used

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  • Planography strut attachment, mfg. method for original plate of planography printing plate and planography printing plate
  • Planography strut attachment, mfg. method for original plate of planography printing plate and planography printing plate
  • Planography strut attachment, mfg. method for original plate of planography printing plate and planography printing plate

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preparation example Construction

[0146] The preparation method of the solution containing rare earth element ions is not particularly limited. For example, it can be prepared by dissolving or suspending a rare earth element compound in a liquid such as water by a conventionally known method.

[0147] The rare earth element compound is not particularly limited, and examples thereof include hydroxides, rare earth element cation salt compounds, coordination compounds, and double salts.

[0148] The anion serving as the counter ion of the salt compound may be either an inorganic anion or an organic anion. Examples of inorganic anions include halide ions (halogen elements can be fluorine atoms, chlorine atoms, bromine atoms, and iodine atoms), carbonate ions, borate ions, potassium ions, nitrate ions, sulfite ions, and sulfate ions. , perchlorate ion, perbromate ion, periodate ion, phosphonate ion, phosphate ion, cyanate ion, thiocyanate ion, PF 6 - , BF 4 - Wait.

[0149] Examples of organic anions include i...

Embodiment 1-1

[0394]

[0395] Use contains Si: 0.06% (mass), Fe: 0.30% (mass), Cu: 0.005% (mass), Mn: 0.001% (mass), Mg: 0.001% (mass), Zn: 0.001% (mass), Ti: 0.03% (mass), aluminum alloy with the balance being Al and unavoidable impurities, which is made into molten metal, processed and filtered, and made into an ingot with a thickness of 500 mm and a width of 1200 mm by DC casting. The surface layer with an average thickness of 10 mm was cut off with a surface cutting machine, and then soaked at 550 ° C for about 5 hours, then cooled to 400 ° C, and a rolled plate with a thickness of 2.7 mm was produced using a hot rolling machine. Heat treatment was carried out at 500° C. in a continuous annealing furnace, and then cold rolled to a thickness of 0.24 mm to obtain a JIS 1050 aluminum plate. This aluminum plate was made into a width of 1030 mm and subjected to the surface treatment described below to obtain a lithographic printing plate support.

[0396]

[0397] The surface treatment ...

Embodiment 1-2～1-19

[0439] Change the aqueous solution concentration, liquid temperature and immersion time in the above-mentioned (h), and the rare earth element compound type, aqueous solution concentration, liquid temperature and immersion time in the above-mentioned (i-1) to be shown in Table 2, and in addition follow the same as The original lithographic printing plates were prepared by the same method as in Example 1-1.

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Abstract

The present invention provided a support for a lithographic printing plate used for a lithographic printing plate master or particularly the master having an image recording layer containing an infrared absorber having excellent stain resistance and plate wear resistance when the lithographic printing plate is used. The support for the lithographic printing plate contains 0.1 to 20 mg / m2of an adhesion quantity of a rare earth element atom on a surface.

Description

field of invention [0001] The present invention relates to a support for a lithographic printing plate and an original plate for a lithographic printing plate, and more particularly to a support for a lithographic printing plate having excellent stain resistance and printing resistance when made into a lithographic printing plate, and a lithographic plate using the support Original print edition. Background technique [0002] Conventionally, in order to improve the developability of a lithographic printing plate precursor, a hydrophilization treatment typified by silicate treatment has been performed on the surface of an anodized lithographic printing plate support. When the surface of the lithographic printing plate support is hydrophilized, hydrophobic ink is less likely to adhere to the non-image portion of the lithographic printing plate during printing, thereby improving stain resistance. [0003] However, once the surface of the lithographic printing plate support is ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B41N3/03G03F7/00B41C1/10B41N1/08
CPCB41N3/038B41N1/08B41C1/1008B41C1/1016B41C2201/04B41C2201/12B41C2201/14B41C2210/02B41C2210/04B41C2210/06B41C2210/22B41C2210/24Y10T428/12736Y10T428/12104
Inventor 堀田久松木昌也
Owner FUJIFILM CORP
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