When did the security code on the stamp come into being?

Fluorescent code spraying is a postal management method to restrain violations of discipline and discipline. On the surface, it seems to be a kind of "anti-counterfeiting" measure, but more is actually the need to improve the scientific management level of postal services. The process of China Post's use of fluorescent code spraying on stamps can be divided into three stages:

The first stage (1999 -2000)

At this stage, only 1 stamp in the whole set of full-page stamps uses fluorescent inkjet code.

1April 8th, 999, the first set of stamps with fluorescent code "China Porcelain-Jun Kiln Porcelain" was born. In the whole edition of China Porcelain-Jun Kiln Porcelain (4- 1), the 1 stamp pattern on the right side of the post office is printed with fluorescent coding, and the other three post offices print serial numbers on the edge paper in the traditional way. The circulation of "Jun Kiln Porcelain" is 37.463 million pieces, 40 pieces in each post office, and only 936,575 pieces are printed with fluorescent codes.

The second stage (2000 -2002)

After 20 months of operation and practice, "2000- 19T? Puppet and Mask stamps have made great changes and breakthroughs in the application of fluorescent inkjet printing. There are 6 sets of tickets, and each post office has 2 fluorescent code-sprayed stamps, with the total number of code-sprayed stamps reaching16.42 million, accounting for 10% of the whole set.

By June 29th, 2002, "2002- 14?" "Desert Plants" stamps, during which 46 sets of special stamps were issued. The proportion of fluorescent printing codes of these 46 sets of stamps has been greatly improved, and the total number of printing codes has increased from less than 6.5438+0 million at the beginning to more than 6.5438+0 million. This meticulous operation, adjustment and improvement process laid a solid foundation for fluorescent inkjet printing.

At present, the stamp sheetlets and souvenir sheets do not adopt fluorescent coding.

Third, the third stage (2002-present)

September 7, 2002 "2002- 19T?" The release of "Yandang Mountain" has changed the previous model, and a full set of stamps are sprayed with fluorescent code. From June 5438+10 to June 5438+August 2002, fluorescent codes were also sprayed on sheetlets and souvenir sheets. ”2002-2 1M？ Hukou Waterfall on the Yellow River is the first stamp sheetlet with fluorescent code, which has been used ever since. This major turning point makes the fluorescent code-spraying ticket have a veritable anti-counterfeiting function.

Extended data

First, you must use a dry pouch, or a dry glass bottle, or a dry stamp album when collecting stamps. Generally speaking, stamp albums and pouches are commonly used.

Second, we must pay attention to the environment in which stamps are stored. Whether you collect stamps with a stamp album or a protective bag, you should not be exposed to the sun for a long time, otherwise it may lead to the discoloration of stamps; Secondly, it can't be in a humid environment, because stamps are paper-based, absorbent and prone to mildew. So it is best to store stamps in a cool and dry place, and you can put some desiccant together.

Third, if you choose a stamp album to collect stamps, you should also pay attention to the arrangement method of the stamp album. Never put it sideways. Over time, the stamps in the album will be squeezed by the weight of the book. Therefore, the arrangement of stamp albums should be like books in the library, standing side by side, not staggered, and books should not be too close together, leaving some gaps.

Fourth, when watching or moving stamps, you must not touch them directly, but use special tweezers to clamp them, because there are often oily secretions on your fingers, which may leave fingerprints on stamps. Over time, traces will appear, damaging the appearance of stamps.

Fifth, if you accidentally touch the seal with your hand, so that fingerprints or oil stains appear on the seal, then gently wipe it with a cotton swab dipped in a little gasoline or alcohol. It should be noted that cleaning it and replacing it with cotton balls is to prevent the oil stains on the cotton balls from sticking to the stamps again. When the trace is almost wiped, rinse it with clear water and finally put it on paper with good water absorption.