Water-based pre-coating detection agent, detection pen and detection method for digital printing

A technology of digital printing and detection agent, which can be used in measurement devices, mechanical devices, and material analysis by observing the impact on chemical indicators, which can solve problems such as insufficient bonding fastness, loss of printing materials, and increased production costs. Achieve the effect of eliminating coating quality problems, reducing the loss of printing materials and saving production costs

Inactive Publication Date: 2020-08-25
广州速马实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The water-based coating liquid is colorless and transparent after being pre-coated on the printing material. The bonding fastness of the surface of the material, so it can only be verified whether there is a problem with the pre-coating when printing on the pre-coated printing material through the HP Indigo digital printing device in the actual production process, if the pre-coating is coated Unevenness and insufficient bonding fastness will cause printing quality problems and loss of printing materials, and the printing quality problems can only be solved by re-coating, which will cause waste of manpower, material and financial resources, and increase production costs.

Method used

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  • Water-based pre-coating detection agent, detection pen and detection method for digital printing
  • Water-based pre-coating detection agent, detection pen and detection method for digital printing
  • Water-based pre-coating detection agent, detection pen and detection method for digital printing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] A water-based precoating detection agent for digital printing, its composition and mass percentage are:

[0047] (1) Bromocresol purple: 1.5%;

[0048] (2) Deionized water: 12.5%;

[0049] (3) Ethanol with a purity of 95%: 85.7%;

[0050] (4) NaOH: 0.3%.

[0051] And configured through the following preparation steps:

[0052] S01. 1.5g of bromocresol violet was added to a beaker containing 85.7g of 95% ethanol solution with a purity of 85.7g, and manually stirred with a glass rod until the bromocresol violet was fully dissolved and uniformly dispersed to obtain bromocresol violet ethanol solution;

[0053] S02. The NaOH of 0.3g is added in the beaker that 12.5g deionized water is housed, fully dissolves with glass rod manual stirring, disperses evenly, obtains NaOH solution;

[0054] S03. Add the NaOH solution into the beaker containing the bromocresol purple ethanol solution, stir and disperse evenly with a glass rod, and obtain a green detection agent under natur...

Embodiment 2

[0068] Such as figure 1 and Figure 4 As shown, in this embodiment, the formula of the detection agent used is consistent with that of Embodiment 1, the difference is that the printing material used is a single white cardboard 7, and the coating equipment used is a single coating equipment, so the detection step It is also different, including the following steps:

[0069] S1. Prepare the test sample: use the single-sheet coating equipment to uniformly apply a layer of digital printing water-based coating solution on the surface of the single-sheet white cardboard 7 according to the normal coating production process, and dry it with hot air on the single-sheet white cardboard A precoat 2 is formed on the surface of the paper 7;

[0070] S2. Scratch detection agent: use the nib 102 of the detection pen 10 to pre-coat the single sheet of white cardboard 7 formed with the pre-coat 2 in the S1 step along the coating running direction and the direction perpendicular to the coatin...

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Abstract

The invention discloses a water-based precoating detection agent for digital printing. The water-based precoating detection agent comprises the following components in percentage by mass of 1-3% of bromcresol purple, 10-20% of deionized water, 76.7-88.7% of ethanol with the purity of 95 percent, and 0.3% of NaOH. The invention further provides a corresponding detection pen and a detection method.The water-based precoating detection agent is advantaged in that the prepared detection agent reacts with a transparent pre-coating layer coated on a printing material, coating uniformity and bondingfirmness of the transparent pre-coating layer coated on the printing material are intuitively reflected by detecting the color development change, the color development uniformity and the coherence ofthe agent, compared with the prior art that the coating effect of the transparent pre-coating layer on the printing material is fed back completely through production experience and the actual printing effect, a coating quality problem can be effectively solved in time, production efficiency is obviously improved, loss of the printing material is reduced, and production cost is saved.

Description

technical field [0001] The invention belongs to the technical field of printing coating detection, and in particular relates to a digital printing water-based pre-coating detection agent, a detection pen and a detection method. Background technique [0002] Digital printing is a new printing method that directly prints computer files on paper, which is different from the tedious process of traditional printing. Its features: printing from one sheet, no need for plate making, instant printing, instant error correction, variable printing, and printing on demand. Digital printing is a comprehensive technology developed on the basis of printing technology. It takes electronic text as the carrier and transmits it to digital printing equipment through the network to realize direct printing. [0003] HP Indigo is a representative type of digital printing equipment. Its electronic ink has very high requirements on the surface printability of the substrate. Most printing materials, ...

Claims

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Application Information

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IPC IPC(8): G01N19/04G01N21/78
CPCG01N19/04G01N21/78
Inventor 李全明汪新州刘康榕
Owner 广州速马实业有限公司
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