A, letterpress printing
Text, photos and pictures, text changes to multiple, printing and prints the number is printed between - for hundreds or thousands of used letterpress. Print the number of not more than thirty thousand, fine photo engraving is not more than seven, eighty thousand. Selection must be printed on the picture to obtain a perfect powder paper network. So you can't use the cheap paper printing pictures and want to achieve beautiful effect. Preferablly with moveable type version of the form, line junction easy separation and divorce, which is a common shortcoming. In addition, the printed when the pressure is too big or too soft pressure cylinder surface will make the back sheet manufactured goods have raised similar, this will greatly reduce the quality of printing products.
Two, offset printing
Offset printing and letterpress printing the biggest difference is the letterpress printing halftone picture must use the smooth surface of the paper, offset printing paper without the need to, as long as not too coarse. Printing halftone effect than the usually gentle, easy website perfectly round.
Resin version or nylon version is a different version than the more able to wear plate, printed on the time up to one million, can be said to be the most long-lived plate. However, use of such printing plate method is slightly different from the offset printing method is ordinary, is not wetting system, it is known as "dry offset printing".
Roughly pictures printed picture more, larger, more suitable for offset printing to be used letterpress printing. As mentioned above, use offset printing printing pictures better than letterpress printing, is a general color printing, four-color printing with offset printing instead of letterpress printing.
Three, intaglio printing
Gravure printing is suitable for the printing of high quality and high value of publications, regardless of color or black and white pictures, gravure printing can be highly resembles a photograph. As a result of expensive sedan, print runs must be in Hongkong, it is five kinds of printing at least take a.
Four, screen printing
Because screen printing ink is particularly strong, most appropriate is used for special effects work, not the number of ink needs strong and is especially suitable for. Also can be printed as a square box, box, round bottles, cans and other facilities in the stereo. At the end of paper printed except can also be printed cloth, plywood, plastic, metal, glass, is useful to common printed banners, T-Shirts, corrugated boxes, soda bottles, circuit board etc.. Various types of printing these features are not other printing method.
Five, the tape printing (rubber printing)
Offset printing is only suitable for printing on plastic bags, hand pump, the size of plastic packaging. Sheet printing machine is not a single input but packages, printed by one cutting. Fine degree point, line is far less than the offset and letterpress printing, offset printing is not visible to the printed books publication.