Technical Outlook: Offset Printing Ink To Improve The Quality Of Direction

Print quality to meet user requirements and species diversity

, print publications and printing Package Product diversification and upgrading can be to the direction, in order to achieve this goal, the printing is continually updated and improved Printing Equipment , But also need to update, better printed material?? Printing ink. Offset printing ink Important in the printing field has been in a position, represents the status of ink products and development, therefore, over the years, most companies did not stop printing ink Offset printing Ink R & D work to continuously improve the old products, develop marketable new offset printing ink, while increasing in variety, product quality and gradually close to the international advanced level. For example, high gloss quick set offset printing ink, cardboard offset ink, web offset newsprint ink, cold-type offset rotary printing ink, UV curable offset inks yield and quality are increasing every year.

Recent years, ink manufacturers color offset printing ink concentration, dry, water resistance, printability, stability of the plane up and down the main technical indicators of no small effort, but also made remarkable achievements. However, the pace of development seems to ink and printing technology is still fast, the quality of less than the total in print to emerge. Focused on several important indicators of the ink.

1. Color density Color density or color saturation, and now the newspaper is no longer the old black and white look, more of the color illustrations have been replaced by a newspaper, so the user of the newspaper offset printing ink color density requirements become even more high. Color newspaper ads, pictures, more eye-catching title, the color ink density needed to return. But now many newspaper ink color levels are not satisfactory, printing to ensure that the printing density, have to increase the ink volume, or increase the percentage of outlets, but this result is bound to heap ink, using the ink increases. Increase the amount of ink will result in network and connected. Normal Web Offset dot gain should be controlled in 25%, if the ink big, it will cause excessive levels of loss and increased network, especially pictures, dot gain is more significant consequences. In addition, there a few years ago a more serious problem is lack of black ink saturation, and still exists, but has not a big problem. Black ink caused due to the low concentration in normal text printing when printing, to reduce costs, choose a low price, quality, little worse for black ink. It is precisely because such a demand, there are some ink factory production of such poor quality ink, affecting the overall quality of ink. Homemade ink in the color density

reasons for the unsatisfactory aspects of the following points: First, most of the current ink factory not produce their own pigments, but Purchase Domestic pigment grinding, domestic and imported paint pigment is still lagging behind in quality; second printing ink factory in order to save costs, use less paint, resulting in ink color saturation is not enough; also the key point is that even if the quality and pigment amount of all clearance, national standard fineness of the ink is not greater than 15 m, grinding the more detailed, more vivid ink colors. If the paint is not good enough processing technology, such as abrasive particle size and inappropriate, the concentration of ink color will be affected. Of course, print and color than the level associated with the ink, but also with the printing plate production, Printing Equipment , Ink balance, conditions related to the quality of ink to improve print quality is the precondition and guarantee.

2. Overprinting of Newspaper printing ink on the offset requirements of chromatography of mainly two points, one color sequence, and second, the viscosity of ink delivery degeneration. The current international order is the standard color newspaper printing green - magenta - yellow - black, its viscosity should be gradually reduced, otherwise there will be ink anti-pull phenomenon. Now, some have noticed a large ink factory color printing sequence according to pull ink viscosity, they often communicate with the ink supplier, timely adjustment of ink for ink.

3. Dryness

Ink drying speed usually affects the print quality, while printing will cause a lot of trouble, such as the result printed on the back of sticky dirty, or even result in web printing does not work correctly. Users reflect the domestic printing ink drying on the quality of a great impact, because there is not completely dry ink printing defects, scrap, dry season and by the impact of larger issues such as climate really should not be overlooked.

Technical Outlook: Offset Printing Ink To Improve The Quality Of Direction

By: zhangbetty

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