1.CISS cartridges for Mimaki JV3,JV5 and Roland printer 2.Tank is together with cartridge,it can deposit ink for cartridge and you can refill inkthrough tank to cartridge,so no need to takeout cartridges to refillwhen runs out of ink. It is very easy and protective . Remark:There are two kinds of tank. Use the two kinds of tank. Install themas the picture showing. 3.If the chip has been used up,insert a piece of new chip in it without taking out cartridge,that will protect printhead. 4.There is a balance device inside,then it can prevent printhead from ink jaming 5.Capacity for Cartridge is 200ml-250ml; Capacity for Tank is 200ml