When philatelists read the new postal forecasts or stamp catalogues, they can see that there is a "version" or "printing version" in the basic information. This mainly refers to the printing method used to print the stamps. The stamps issued by New China are mainly printed using the following printing methods:
1. The engraving version is a type of gravure printing, also known as engraving gravure. The 1:1 inversion of the size of the stamp by the professional engraver will be used to carefully engrave the picture and text on the steel plate. After quenching to increase its hardness, it becomes the original engraving, and it can be directly printed on the plate.
But more is to use this original as a model, overturned on the steel shaft, to become a "master model" of the front image of the stamp. With this steel shaft master mold, a plurality of "sub-modules" are further rolled out so that all the features of the stamps are reflected on the respective sub-modules. As a result, the use of "sub-modules" to print stamps has not only greatly improved the printing efficiency, but also ensured that each stamp has a good set of properties.
In the early issue of the engraved stamps, their printing was carefully carved by highly skilled engravers. With the advancement of science and technology, the mechanical engraving plate came into being. In modern times, it further developed into an electronic computer-controlled electronic engraving plate.
There are a total of 199 sets of old and special stamps in China, 78 of which are printed with engravings. The printed stamps are thick and dark with clear outlines, raised feelings, good artistic effects, and strong anti-counterfeiting. The disadvantage is that printing is relatively monotonous and costly. In the past 30 years, stamps have rarely been printed using this printing method. Earlier this year, in order to improve the printing quality of stamps and increase editions, the State Post Bureau is in the process of importing advanced engraving equipment. In this way, postage stamps will be reproduced in front of the Mailer.
2. Photocopying, also known as photogravure, involves using a photographic film as a template and adding an on-screen screen. After exposing the photosensitive film, the stamp image is transferred to a printing cylinder. Finally, a gravure printing plate is formed by etching. The stamps printed by the photocopying edition have features such as dark prints, colorful, rich layers, and vivid images, which are commonly used by all countries in the world.
In 1959, China began to use a photocopying method to print stamps, and there appeared masterpieces such as “Mei Lanfang stage art†and “Peony†that were favored by the Mailers. After 1974, the photocopying edition became one of the main methods for printing stamps in China. In the 1974-1991 period, 295 of the 353 J and T stamps were printed. There are a series of excellent stamps such as T28 "Horse", T37 "Camellia", T45 "Peking Opera Mask" and so on.
3. Offset generally refers to lithographic offset printing, which is an indirect printing method. When the stamp is printed, the ink on the plate is first printed on a roller covered with rubber and then transferred to paper. Obviously, the offset printing method is much simpler than the engraving or photocopying method, so the printing cycle is short and the cost is low. The main disadvantage is that the offset printing stamp has low security and is easy to copy. For this reason, the use of offset printing stamps, often using special anti-counterfeiting ink, special stamp special paper.
In the early days of New China, there were a variety of stamps used offset printing, and later less used. Since 1992, a large number of offset printing has been used. In 1992-1998, a total of 171 sets of ancillary tickets were issued, 104 of which were offset printing. For example, Zheng Banqiao's work selection in 1993, Osmanthus's toothless Zhang in 1995, and the 100th anniversary of Peking University's establishment in 1998 were all offset printing.
In addition to the three most basic printing types mentioned above, the New China Stamps also include printed engravings, overprints, overprints, and embossings. These overprint methods refer to a stamp that is overprinted by two or more printing methods, which can all be called "hybrid". For example, the postal stamps that the mailers love, all use the video edition and the engraving edition overprint. That is to say, the photocopies are used to print the colors and gradations of the stamp designs, and then the engraving outlines and stamp texts are printed. With the use of photocopy printing, the stamps are colorful and full of layers. With the engraving patterns vivid and refined, the three-dimensional sense is strong, and it is difficult for counterfeiters to forge. The special 57 "Huang Shan landscape" stamps welcomed by Chinese and foreign mailers are also overprinted. The combination of the photocopying and the engraving has enabled the printed stamps to achieve better artistic results and higher print quality.
The printed version of the stamp is a kind of basic postal knowledge that traditional philatelists should know about stamp research. For general philatelists, understanding the print version of the stamps can not only improve their ability to appreciate stamps, but also improve their ability to discriminate between the authenticity of stamps.
Print version of the stamp
April 28 01:06:21, 2024
Water Drawing Board Guangdong Jishengke Industrial Co.,Ltd , https://www.jskpads.com