Aqueous ink for mimeograph printing and method for mimeograph printing

A stencil printing, water-based technology, applied in the direction of ink, application, household utensils, etc., can solve problems such as damage, inability to print again, loss of ink fluidity, etc.

Inactive Publication Date: 2006-11-08
RISO KAGAKU CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] On the other hand, the water-based ink for stencil printing proposed in the past has the problem that when the printing machine is not in use and the ink in the printing machine is left in an open system for a long time, the fluidity of the ink will be lost. Lose
For this reason, the printing workability of the printing machine after being left in a non-use state for a long time is reduced. If the printing machine is not disassembled and cleaned immediately after printing or just before printing again, it will become impossible to print again. The advantage of printing "excellent operation and workability" will be greatly impaired

Method used

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  • Aqueous ink for mimeograph printing and method for mimeograph printing
  • Aqueous ink for mimeograph printing and method for mimeograph printing

Examples

Experimental program
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Effect test

Embodiment 1

[0057]6.0% of carbon black ("MCF88" manufactured by Mitsubishi Chemical Corporation) as a colorant, 1.3% of polyvinylpyrrolidone ("K90" manufactured by Daiichi Kogyo Pharmaceutical Co., Ltd.) as a pigment dispersant, and 20.0% of distilled water were mixed, Fully disperse it with a sand mill to prepare a pigment dispersion. Dissolve 0.5% of polyacrylic acid ("Junlon PW 150" manufactured by Nippon Junyaku Co., Ltd.) as a thickener in 16.0% of distilled water, add 10.0% of 2% sodium hydroxide aqueous solution to this for neutralization, and then add the previously prepared The pigment dispersion, 16.0% of triethylene glycol, and the remainder (30.2%) of distilled water were mixed to obtain the ink of Example 1.

[0058] Embodiment 2~6, comparative example 1~4

[0059] Except for the formulation shown in Table 1, it carried out similarly to Example 1, and obtained the ink of each Example and a comparative example.

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PUM

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Abstract

An aqueous ink for mimeograph printing, which comprises a water-soluble polymer based on an unsaturated carboxylic acid and triethylene glycol. Preferably, the ink further contains beta-thiodiglycol as an optional component.

Description

technical field [0001] The invention relates to a water-based ink for stencil printing, in particular to a water-based ink for stencil printing suitable for a rotary digital stencil printing machine and a stencil printing method using the ink. Background technique [0002] Compared with printing methods such as offset printing, gravure printing, and letterpress printing, the stencil printing method has excellent operability and simplicity. For example, it does not require complicated operations such as cleaning after use, and does not require professional operators. Since the thermal plate-making method using the thermal printing head as a component is used, image processing can be digitized in the stencil printing method, and high-quality printed matter can be easily obtained in a short time, so it is convenient as an information processing terminal Sex is increasingly recognized. [0003] Rotary stencil printing machines that can automatically control the plate making / loa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D11/033C09D11/037C09D11/10C09D11/106C09D11/107C09D11/108
CPCC09D11/0235
Inventor 林佳宏林大嗣渡边祥史
Owner RISO KAGAKU CORP
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