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In the early 90's, the use of magnetic cards, IC card sheets was not popular in China, and most of the printing and production of cards were done in Shenzhen

Update time:2022-12-28 17:53:42 / Views:108

In the early 90's, the use of magnetic cards, IC card sheets was not popular in China, and most of the printing and production of cards were done in Shenzhen, Hong Kong and other places, so the price of card production was relatively high at that time. 

In the early 90's, the use of magnetic cards, IC card sheets was not popular in China, and most of the printing and production of cards were done in Shenzhen

Today, ten years later, magnetic cards, contact IC card sheets and RF cards are widely used in our life: for example, IC phone booths can be seen everywhere in the street, 24-hour ATM machines, shopping malls, supermarket shopping cards, etc. According to the development requirements of the national information industry, the "three gold projects" are represented by the urban public transportation card project, the social security card project and the financial card project, which have been promoted in Beijing, Shanghai, Dalian and other cities, and the number of cards issued will increase exponentially as time goes by. According to the current city of Shanghai card issuance, due to the restrictions of the use of conditions, the general use of non-contact radio frequency card. When using, the card does not need to be in contact with the card reader, just place the card at 5~10cm from the reader to realize automatic settlement and data processing. At present, the chip and system function of a card is increasingly perfect, but the card system causes high cost, which to some extent hinders the promotion speed of the card. One of the main reasons for the high cost of the card chip is the high cost of the card chip; another reason is the high scrap rate when the card is printed. Our company is the card subscriber of Shanghai One Card project. I hope the following can help RF card users to consider the printing cost of RF cards. At present, there are roughly two printing methods in the industry: printing before card formation and printing after card formation. Now briefly introduce these two printing methods.1. Pre-card printing Arrange printing process before chip and antenna package. This printing method is usually full-plate printing, that is, the number of cards on the printing layer and the number of inlay chip typesetting equal. The material of the printing layer is PVC or PET, and after printing, the lamination is punched and cut into cards. This printing method can apply protective film on the printing layer and print color photos directly on the card surface; it can also apply protective varnish directly after printing to avoid card surface pattern wear. Generally speaking, the thickness of the RF card is controlled at 0.80mm ~ 0.84mm The material thickness of the printing layer is generally between 0.12mm and 0.15mm. Punching and cutting alignment cursor needs to be placed in the nesting. The accuracy of the cursor printing position will directly affect the punching accuracy of the card. If the deviation is too large, the coil will be cut off, resulting in scrap. The material of the printing layer is usually PVC or PET, these materials can not be dried by absorbing the ink, we use them UV printing ink (ultraviolet light solid ink), UV ink can be dried within 0.5 seconds in ultraviolet light, so the printing speed can be more than 6000 sheets / hour. UV drying must pay attention to the matching of light time and printing speed, due to the thin printing material, light heating time is too long (more than 2 seconds) will make the material shrinkage deformation, change the spacing between the card and the card, cut off the coil scrapped due to position deviation; on the contrary, insufficient light time will lead to incomplete drying of ink, gently wipe the ink will wipe, resulting in picture damage or material bonding phenomenon. Full-plate printing requires high printing quality because of the high cost of the chip of the RF card (market price of a few dollars ~ tens of dollars). If the whole printing layer has 1~2 scrap cards, the chip loss will be great. Generally speaking, the loss of scrapping the whole printing layer is less than losing a chip. Therefore, the scrap card rate of the printing layer (including color difference, color spot, stain, etc.) must be controlled within 3%. However, for ordinary offset printing, this is a difficult level to achieve. This has led to a new printing method, post-card printing (single card printing). 2. Post-card printing Arranges the printing process after the chip is encapsulated. Post-card printing is printing on a single card that has been put into a chip coil, which is one of the most advanced printing methods available. At present, most of the single card printing equipment used in China is the waterless single card printing machine from Germany and Japan. Unlike ordinary offset presses, it uses a special version of resin and does not use lubricants in the printing process, so the quality of the print is not disturbed by water-ink imbalance, allowing better control of the color difference range and better color consistency of the print. RF card printing on waterless single card offset printing machine, the finished product qualification rate can be controlled within 3%, which can greatly reduce chip loss and manufacturing costs. However, the one-time investment in single-card printing equipment is large, and its printing products are limited to single-card printing, and the equipment utilization rate is low; single-card printing requires a high workshop environment, indoor temperature, humidity and cleanliness are important factors affecting the quality; surface roughness, surface tension will affect the integrity of the ink and network, and the processing requirements for the card surface are high; if the card is not uniform, it will lead to poor equipment out of the card or card card death. When printing post-processed cards (such as color photos, heat sublimation printing, etc.), special processes must be added at the time of printing to meet the requirements of post-processing. When printing post-processed cards (e.g. color photos, heat sublimation printing, etc.), a special process must be added at the time of printing to meet post-processing requirements. Compared with full-page printing, the cost of single card printing is higher, but the total cost of card making will be greatly reduced due to the improvement of the printing yield and the reduction of the scrap rate caused by the deviation of the punching position. In conclusion, the choice of RF card printing method needs to consider the number of cards, post-processing requirements, suppliers, production methods and other conditions in order to find the best solution.

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