I am having trouble with a Bizhub 751 running pre print stock on A3 Bond stock. There seems to be a build up of a gooey sticky type substance that builds up on the transfer\sep charge wires and surrounding case. I do understand it seems to be coming from the ink on the stock. I am wondering if anyone out there can tell me actually the technical reasoning behind this. I know there are types of ink that have different hardening levels and also offer properties. I am currently trying to find out any info from the ink manufacturer but thought someone here might have some reasoning behind the problem.