Article by jekky
Intaglio stamps Print Special gravure rotary press used, four-color, colored, six-color printing stamps have the same color with colored engraving gravure or four-color overlay of the gravure photogravure printing stamps. These special stamps presses are equipped with digital meter, playing perforation and cutting device, while the printing of stamps can be counted on one side, punch, cut out according to standard full-page stamp. Photo gravure ink is used in solvent-based liquid inks, printing plates immersed in the fountain in the layout by a doctor blade on the part of non-graphic ink scrape, and graphic part is in the concave part of the plate, just save the ink after stamping by the impression cylinder, this part of the ink that is transferred to the paper, and through multi-color printing is an exquisite pieces of stamps will be a transfer on paper. Intaglio printing ink stamp is used in viscous resin ink, the ink transfer form with embossed similar, but because of the graphic part of the intaglio engraving is concave down, so the plate on the non-graphic section (plane) of the ink Mexico will have to rely on special devices to wipe clean. At present, carving printing ink rubbing roughly four ways: cloth wipe ink, ink rub TCE, water clean ink, paper and rub ink. Wipe with a cloth ink, the printed ink three-dimensional sculpture and gloss are better, but the printing slower; wiping trichloroethene faster printing ink, but the toxic and harmful to human beings; water clean ink is a ink rubbing more advanced way, but there are also wastewater treatment and pollution; paper wipe ink suitable for printing of paper, such a large volume of our country are not quite suitable for printing stamps. Our engraving stamp presses are equipped with devices for the cloth wipe ink.
Intaglio stamps in addition to the above-mentioned single ticket or a single photo engraving votes, but also from one kind of camera plus sculpture overprint stamps, known as the Shadow carving stamps, stamp enthusiasts of all ages love it. Shadow carving stamps is photogravure printing and engraving intaglio printing method combined two different overlay together. Engraving intaglio printing of securities, although the ideal is a process, but it is difficult to show the rich colors and fine level. Photogravure and disadvantages, as some relatively deep color of stamp designs, ink when printing large, and photogravure printing ink is a very small fluid viscosity, so often presented in deep mediation irregular watermarks, damaged stamp images the exquisite feeling of another, as gravure printing the pattern and depth of all the different locations of different sizes, result in fine lines or text may appear jagged edge of the broken point of impact printing glossy full results. To stamp to be more perfect, usually carved intaglio and photogravure mixed overlay method, to perform two printing their own strengths, to get even better printing effects, such as the famous “Huangshan scenery”, “Lushan Mountain Scenic “” Zodiac “stamps and the recent release of” Chinese pagoda, “” Mountain Song “,” rare birds “and stamps are printed in this way.
The two different printing performance combined technique on overlay accuracy in particular is very difficult, they need their own completely different printing pressures, the performance is not the same ink, the printability of paper is also each request, the printing of large mechanical error, the rejection rate is also higher than other printing methods. In Design When this type of stamp printing process, to fully understand and play to the characteristics of the two printing methods to advantage to get better print results. This overlay version of the stamps are generally based intaglio, drawing effects to make picture Patten, then lined photogravure of blooming color. Therefore, the carving version of the main lines and ideas to be heavy, to really make the image of the pattern lines and the main level; photogravure of the lining color, you can light, false, supplemented by color and level of detail changes, so even if there is mechanical error not affect a clear outline of the theme features a complete, printed stamp design solemn tall and straight lines, theme features prominent, dimension, and the magnificent colors, has a very unique artistic effect, is particularly worth philatelists treasure. The current international use of intaglio and multiple stamps Offset printing Chromatic printing plates. Modern color offset printing technology, much higher levels of performance capability, offset printing text, lines clear smooth, thick large area uniform background, pattern color is beautifully balanced, then intaglio overprint lines, ideas, stamps reflect the artistic effect is even more perfect.
Stamps is very small print, the print volume is very large, not only to arrange on a plate, dozens or even hundreds of pieces of design, requires that each pattern of color, exactly the same level; and the same pattern stamp repeat printing thousands of pieces, sometimes for months printing cycle.
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