we also use the spinjet, and i will say that it is a workhorse. we pound a lot of proofs through it, and it just keeps going. we use it strictly for content, we have the color dialed back. as far as the backup, i have never been a fan of the spinjet or the doubleproof when it comes to proofing one side and flipping it and proofing the other side. it does a fine job on smaller 1-up peices, but on the larger impositions we proof, it tends to skew quite a bit, and it is hard for us to keep the square. even at worst, the backup is off maybe .0625" at one end. for our use, the large imposed proofs ar emore for content, and arent relied upon much for backup issues.|
the canon impoproof, and this is only my opinion, is a bit of an enigma. it is two hp plotters welded together, back to back. it has a large upside, becasue the sheet does not require bing flipped, it goes through as one stream...one plotter does the upper, and then feeds immediately into the other plotter which prints the lower. the sheer speed is very nice. it worked great for us when we had a large volume of imposed proofs that needed to be done all at once, one right after the other without any hesitation. where we ran into trouble was if your work is stop and start, it seemed to us like it took a proof or 2 for the optics to dial in before the backup was usably close, so i turned into a bit of a material hog. but once it dialed in, it was lights out, fast and accurate. we rarely had so much work that we could keep it fed enough to keep it dialed in, so we ended up using the doubleproof more often.
for as many of these proofs as we make, it seems like someone could really make a fortune if a double-sided proofer could be pefected. they all seem to have limitations.
all in all, the spinjet has gotten the job done for us, it is solid.
Edited by: chris_r on Sep 17, 2007 8:43 AM