Method for measuring intaglio print ink printing plate ink-consumption amount

A technique of gravure printing ink and measurement method, which is applied to general parts of printing machinery, printing, printing machines, etc., can solve difficult problems such as ink volume, and achieve the effect of simple operation and accurate measurement results

Inactive Publication Date: 2008-03-19
SHANGHAI BANKNOTE PRINTING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is difficult to directly measure the amount of ink on the printing plate that is

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] In the state of normal process printing of gravure printing machine, about 250ml of plate wiping stock solution and waste liquid are randomly extracted from the plate wiping stock solution storage tank corresponding to the machine and the waste water outlet next to the machine respectively. In the laboratory in advance, place the evaporating dish in an oven at 105°C for 3 hours to keep the weight constant and record the weight. After mixing the extracted solution evenly, immediately use a 50ml pipette to extract three identical wiper stock solutions and waste solutions, respectively, and fill them in evaporating dishes with constant weight, then place them on a water bath, and evaporate to dryness. Finally, place the evaporating dish in an oven at 105°C to dry for 6 hours to constant weight, then cool for 30 minutes, weigh and record. The weight of the waste liquid after evaporating to a constant weight is recorded as: W1; the weight of the wiping stock solution after e...

Embodiment 2

[0020] In the state of normal process printing of gravure printing machine, about 250ml of plate wiping stock solution and waste liquid are randomly extracted from the plate wiping stock solution storage tank corresponding to the machine and the waste water outlet next to the machine respectively. In the laboratory in advance, place the evaporating dish in an oven at 105°C for 3 hours to keep the weight constant and record the weight. After mixing the extracted solution evenly, immediately use a 50ml pipette to extract two parts of the plate wiping stock solution and two parts of the waste liquid, respectively fill them in constant weight evaporating dishes, and use 1mol / l standard equivalent hydrochloric acid to titrate the plate wiping waste liquid to The pH value is 7±0.2, and the titration end point is indicated by a pH meter. Then add the same standard hydrochloric acid dropwise to the wiping stock solution until the pH value is 7±0.2.

[0021] After the test solution wa...

Embodiment 3

[0024] In the normal process printing state of the β gravure printing machine, randomly extract about 250ml of wiping stock solution and waste liquid from the wiping stock solution storage tank corresponding to the machine and the waste water outlet next to the machine respectively. In the laboratory in advance, place the evaporating dish in an oven at 105°C for 3 hours to keep the weight constant and record the weight. After mixing the extracted solution evenly, immediately use a 50ml pipette to extract 1 part of the plate wiping stock solution and 1 part of the waste liquid, respectively put them in constant weight evaporating dishes, and use 1mol / l standard equivalent hydrochloric acid to titrate the plate wiping waste liquid to The pH value is 7±0.2, and the titration end point is indicated by a pH meter. Then add the same standard hydrochloric acid dropwise to the wiping stock solution until the pH value is 7±0.2.

[0025] Evaporate the acid-added test solution to drynes...

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PUM

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Abstract

The invention discloses a testing method for an ink consumption of a gravure ink color scraping version, including: the equal volume of a primary liquid and a liquid waste is picked up randomly from a scraping version primary liquid storage tank and the liquid waste outtake beside a machine and then is put into different constant weighted evaporating pans respectively; a standard hydrochloric acid is dropped into the evaporating pans till the pH value reaching seven plus or minus 0.2; the evaporating pans are placed in a water-bath to be dried and then dried to constant weighting and recording. According to the weight of a solid residue and the consumption statistics of the gravure ink color scraping version liquid, the solid ink residue weight scraped in a printed version for one piece of paper can be calculated. According to the volatile content of every kind of ink, a total volatile content can be calculated which, with the solid residue weight, can be compensated for the scraped ink quantity on the printer version of each paper when printing. The invention has the advantages of simple operation and more accurate testing result.

Description

technical field [0001] The invention relates to a method for measuring the ink consumption of gravure printing in the printing technology, in particular to a method for measuring the amount of ink erased on a printing plate of a single sheet of paper in engraving gravure printing. Background technique [0002] In the printing industry, especially in the banknote printing industry, gravure printing is the printing method with the highest ink consumption. In this way, a considerable proportion of ink is not used to print on the product, but is wiped off by the wiping roller and turned into industrial waste. The inspection and quantification of the erased ink will help to grasp the waste and consumption of the ink and further guide the improvement of the printing process. However, it is difficult to directly measure the amount of ink on the printing plate that is wiped off by the wiping roller during the high-speed operation of the gravure printing machine. Invention content...

Claims

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Application Information

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IPC IPC(8): B41F33/00B41M1/10
Inventor 章星刘义龙王洪波吴亚复王琼杨晓鸣蔡晓刚
Owner SHANGHAI BANKNOTE PRINTING
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