RF card printing method (2)

Full-page printing has a high requirement for printing quality, because the chip cost of RF card is high (market price is a few yuan to tens of yuan). If there are 1 to 2 waste cards in the full-print layer, the loss of the chip will be huge. Under normal circumstances, the loss of the entire print layer should be less than the loss of one chip. Therefore, the waste card rate of the print layer (including color difference, color spot, stain, etc.) must be controlled within 3%. However, for ordinary offset printing, this is a difficult level to reach. This leads to a new printing method - printing after card printing (single card printing).

2, after the card printing

The printing process is arranged after the chip package.

After card printing, printing is done on a single card that has been placed in the chip coil. This is one of the most advanced printing methods currently available. Currently, single-card printing equipment currently used in China is mostly a waterless single-card offset press in Germany and Japan. Unlike the commonly used offset printing press, a special resin printing plate is used, and no fountain solution is used in the printing process, so it does not exist. Ink and ink imbalance can interfere with the quality of the printed matter, and can better control the range of color difference. The print has better color consistency. Printing radio frequency cards on a waterless single-slip offset press, the finished product qualification rate can be controlled within 3%, which can greatly reduce the loss of the chip and reduce the manufacturing cost for the card manufacturer.

However, single-card printing equipment has a large one-time investment, and its printed products are also limited to single card printing, and the utilization rate of equipment is relatively low; the single card printing has a high requirement for the environment of the workshop, and the indoor temperature, humidity, and cleanliness. Degree is an important factor affecting the quality; the surface roughness and surface tension of the card body will affect the ink integrity and the integrity of the dots, and have a higher requirement for the surface treatment of the card body; in addition, if the card body is not even, it will cause the device to issue a card. Poor or card stuck. For post-processing card printing (such as color photography, sublimation printing, etc.), special processes must be added during printing to meet post-processing requirements.

The cost of single-card printing relative to full-page printing is relatively high, but the total cost of card making will be greatly reduced due to the increase in the yield of printing and the reduction of scrap rate due to the deviation of punching position.

In short, the choice of radio frequency card printing methods needs to be combined with the number of cards, post-processing requirements, suppliers, production methods and other conditions in order to find the best solution.