OPP IOT provides 5 printing methods, as following:
I.Offset printing
Offset printing is a widely used printing technique which is printed on PVC (PETG) or paper is made up of a combination of the 4 process colors of printing-Cyan, Magenta, Yellow, and black. The ink is spread on metal plate with etched images, and then transferred to another surface such as rubber blanket. The final stage of printing is apply the image to PVC (PETG) or paper by pressing it against the surface (such as the rubber blanket). For advantage of offset printing, there is a consistent high quality of color images and can print realistic photo images , complicated pictures(contains multiple colors). Images are also sharper and cleaner. In opposite of Screen printing, Offset printing is not unable to print out the high-definition colors. The type of printing is most efficient and economical when printing a large volume and printing the same design image. Offset printing, there is the overlay(the protection layer), can protect the proximity card from cutting, also can be used in a long time.


II.Silk Screen printing
The process is known as screen printing. A screen is made of a piece of porous, finely woven fabric (originally silk, called Silk Screen printing, but nowadays made of polyester or nylon) stretched over a wood or aluminum frame. Firstly, no using area of the screen is blocked by a non-permeable material where wont to be printed; that is, the open spaces are where the ink will appear. Secondly, the silk screen is placed above PVC sheet, Ink is placed on top of the silk screen (one color once), and use machine pressure method to push the ink evenly into the silk screen openings. Ink passes through the open of silk screen is printed onto PVC sheet. If more than one color, the process is same as above. Compare with Offset Printing, Silk Screen printing can print out high-definition colors, but not able to print like photo reality. Silk Screen printing also have the overlay to protect the proximity card surface to keep using in a long time.


III.CP20000-Multi Color Offset Press-M.C.O.P. (Single card printing)
M.C.O.P ( CP20000 ) feeds cards one by one from the bottom of the pile by air suckers. Smooth feeding with constant and small quantity is available regardless of the volume of cards. The printing process principle is same as Offset printing, the difference only is lies in offset printing is at the same time one sheet printing , but CP20000 is single card printing. There is difference between offset printing and single card printing, that is there is no overlay for single card printing , so the damage will be damaged by cutting or other ways. The advantage for single card printing: preparing the blank card in advance, and just print the work after receiving the image from client. Fast and efficient, and also cost less than the offset printing on printing set up fee.


IV.Reverse Transfer printing
Reverse Transfer printing (Re-transfer printing) is an amazing technology in plastic card printing. Re-transfer printing allows you to printing full photo-realistic color , full bleed artwork ( images) in perfect color without the pitfalls of traditional dye-sublimation card printing。Alike Dye sublimation printing prints directly onto the card surface, Re-transfer printing uses CMYK colors that is reverse artwork printed on a laminate (transfer film) that is then adhered to the card. There is principle in Re-transfer printing that has an 『over the edge」 bleed to ensure 100% card coverage. However, the cost for reverse transfer printer is much expensive if compare with dye-sublimation printer.


V.Dye Sublimation printing
Dye sublimation ("Dye sub" for short) printer prints directly onto the surface of card by laying down layers of ink in the primary colors (CMYK) to create all of the colors in your design, However, there are a great variety of dye-sublimation card prints in the market. Some of less expensive card prints do not work well with contacless ISO card due to the cards are perfect flat. The slightest bump or dip in the card can cause an imperfection, in the printed artwork. The higher quality card printer can accommodate these slight variations in contactless ISO card. Therefore, dye-sublimation prints do not do full bleeds, a full bleed is extending the artwork all the way to the edge of the card. It is very important to try printing some sample contactless cards, with a design similar to the one you plan to use, before purchasing a dye-sublimation printer.