PRO-4600 paper jam error

[asuper_lemma]

I'm trying to do some experiments with overprinting a new image on top of a previously printed sheet. Each time I go to make the second pass I get an error on the printer that says the paper is jammed even though it is feeding just fine. The error occurs at different point each time and seems to correspond to the amount of ink that's already on the paper (i.e. if it was very light on the first pass it gets further into the second pass, and if it was very heavy on the first pass then it's almost immediate on the second pass). Any thoughts on how to work through this?

[Patrick]

Hi asuper_lemma,

Please contact one of Canon's Technical Support Representatives via phone for assistance. There is NO charge for this call. Please dial 1-800-423-2366, Monday-Friday 8:00 am to 8:00 pm Eastern Time, excluding holidays. A Technical Support Representative can determine the cause of the issue and resolve it or provide you with your available service options.