First, why oh why use an adhesive-backed card?
The key advantage is saving money whiling adding visual security. You can use a less expensive “Clam Shell” Prox card which is too thick to fit in a printer but on which you can stick an ID printed on an adhesive backed-card. While this is a good option, there are issues that occur a bit more with these cards than with the PVC or Composite cards such as card jams, feeding multiple cards and overall lower print quality.
Now that you have made this decision, what’s next? Well, there are different types and brands. Things to consider:
Paper v Mylar
Paper Backed Cards are less expensive but because the rollers in a card printer are designed for PVC material, you may see more card jams as well as less crisp print quality.
Mylar Backed Cards are less problematic since the mylar material is less flexible than paper, thus leading to fewer card jams and better flow over the rollers.
CR-79 v CR-80
CR79 cards are slightly smaller than the Clam Shell and will fit nicely on the card without leaving sticky edges hanging over. Note: If you use these cards, be sure the card setting is set to CR79.
CR80 cards are the same size and can leave an overhang which collects lint and dust and looks less professional.
Otherwise, if using paper backed frequently, be sure to clean the printer more often to remove the paper “dust” left behind.