If you have an ID card tray for Epson or other printer,you can use these blank cards printing directly from your printer.This card can be printed on both sides.Thick,30mil,and the size is 33/8"x21/8"(standard credit card size).You can print any ID card you can imagine or create!Print for your company or organization.These are the only type for inkjet printers.They can absorb normal dye ink or pigment ink(pigment ink will makde these cards virtually waterproof).Most people print these cards on an Epson R280 printer.OEM Epson ink is pigment ink.See my other items if you need an adapter tray to print these cards on your printer.Much than ID cards printer like Datacard,Zebra,Evolis,Fargo,Magicard,NBS & ect.These are special card for inkjet printing.In my store have the follow products:1.Inkjet pvc card2.Inkjet 5528 chip card3.Inkjet HICO magnetic strip card4.Inkjet RFID card5.Inkjet HICO magnetic strip with 5528 chip card6.ID card tray(for Epson or Canon inkjet printer)