Use hard paper with it, or it'll bleed. I use hot press bristol board for my copic stuff and that doesn't bleed. Zeta is good for cheaper stuff. Don't use cartridge. Even printer paper is better than cartridge.
If you use the right paper, then it's your fault if the colour goes over the line. Not the other way around. No fighting the paper for colour location
The other thing is use a bleed proof pen. I use copic multiliners. They don't bleed when I use copics. I dont' know the quality of other pens. Wait for ink to dry a few hours before colouring on top of them