A method is described which increases the fusing latitude of liquid toner in an electrophotographic printer. A two stage fusing system with different coverings on the first and second stage fusing rollers has been found to produce fused toner images with good durability without low or high temperature fuser offset. The first stage nip temperature is just high enough to vaporize most of the liquid toner carrier fluid. The first stage roller covering is selected to resist low temperature fuser offset. The temperature of the second stage fuser nip is sufficient to adequately fuse the toner to the receiving media and is generally higher than the temperature of the first stage nip. The covering on the second stage fusing roller is selected to resist high temperature fuser offset. The coverings on both the first and second stage rollers must have good release properties.
Steve Jensen, Truman Kellie, Manuel Lozada, Len Stulc, Brian Teschendorf, Chuck Simpson, "A Method for Increasing Fusing Latitude of Liquid Toner" in Proc. IS&T Int'l Conf. on Digital Printing Technologies (NIP20), 2004, pp 1008 - 1010, https://doi.org/10.2352/ISSN.2169-4451.2004.20.1.art00106_2