When one page of HP Proofing Gloss is printed and stacked on top of another, they can stick together. It takes longer than average for the ink to be absorbed into the media and therefore more time for the ink to dry. There is a default setting in the HP Designjet software which is "dry time on". This slows up the release of a follow-on print. If there will be unattended printing and therefore stacking, it is best to leave this option in the HP Designjet software "on". If you want to have the prints released faster, the media will have to be taken off the output tray after it is printed. The dry time setting in the HP Designjet software will protect stacks of two or three sheets from image transfer on the output tray. However, HP cannot guarantee that there will not be image transfer in larger stacks of media. The transfer is proportional to the weight of the stack and will not be helped significantly by increasing the dry time setting further. Please note also that letting the samples dry overnight should improve the stackability. To prevent smearing, allow the print to complete its full print cycle (which includes a built-in dry time). High ink density and a cold humid environment may mean extra dry time for your prints. Note that in premium mode, the proof should not be stacked if possible, as dry time is longer. While dry time is five minutes for a proof in best mode, it takes ten minutes to dry for a proof in premium mode. Always handle the media with care. Handle the printing material by the edges. Avoid excessive folding and handling before and after printing to prevent damage to material coating. |