I'm a French speaker and I can't print both sides with CS-310. Can you help?
Unfortunately, HiTi CS-310 supports single-side printing only. As you can see on the official HiTi article, only HiTi CS-320 card printer supports double-side printing. If you purchase a HiTi CS-320 device, you can find all information regarding the double-side printing on the official user manual.