Kara, a creative and curious crafter, did some testing and found the PERFECT CRAFTING POUCH to stop the bleeding of the Copic markers, especially the mostly difficult Carmine Red on non Copic-friendly papers. Evidently, she’s been a pouch fan for a long time for inkjet printing on challenging papers. She posted the results of her testing on her blog, Whisk, Paper and Silver. 
When working with digistamps, she found surprising muddying issues when using the pouch and the Copics. So, after getting some Copics, I ran some quick tests on regular inkjet paper looking only at the muddying issue not the Copic bleeding. Typically, we use the pouch before inkjet printing to stop the ink from bleeding — but in this case, the inkjet ink wasn’t bleeding. So what I found is it is best with Copics to apply the Perfect Crafting Pouch after inkjet printing, but before the Copic markers. Also, it appears that even using the pouch before printing with the photoblack cartridge did not cause the muddying found with the regular (grey-scale) ink cartridge. Kara said, “I used the pouch before printing [the sunflower digistamps], and I was getting muddying. I didn’t think to try the pouch after printing – my thought was that if I’m going to use a paper that’s problematic with Copics, it’s probably also going to be problematic to print on. ” Maybe not!
I think it would be especially important to use all sorts of papers for testing–including the Copic specialty papers– and try all sorts of inks–both on the inkjet printer and regular stamp inks. I’m hoping more experienced Copic-users will follow up on this!
