Helios deploys dedicated, advanced algorithms designed to detect any type of defect, including color misregister
, color variations, misprints, text errors, spots, splashes, diecut problems, bar code problems and missing labels, The system works seamlessly on any substrate and any application.
This automated approach helps reduce variations in web fibre orientation profiles, which can cause a range of imperfections in paper and board products such as stack-lean or paper jams in sheet-fed devices, misregister
in colour printing, twist in multilayer board, and weakened corrugated containerboard.
The same distance control that prevents misregister
of printed bags ensures a proper gap between stacks to prevent bags from sticking together.
This new system detects print defects, including misregister
, streaks, spots, colour variation and misprints, and alerts the operator so that remedial action can be taken.
To be certain of avoiding misregister
, it was decided to reduce the number of cup blanks per printed sheet from 27 to 24.
Beyond saving money, OnColor ECO enhances highlight detail, reduces set-off, and reduces visibility of misregister
, New ProImage Europe Manager Izzet Edige said in a statement.
The Shark 100 percent inspection system identifies both random and repeating defects as small as 0.05 square milimeters, including missing print, fill-in, splash, spots, misregister
, hickeys, dirty print, web crease, haze, smudges, diecut variations, and other imperfections.
Big enablers, Blevins continues, include direct-to-plate output, which also eliminates film misregister
and processing time; communications technologies, automatic register-control and press-presetting systems, which cut time and improve quality; and advanced press controls from a remote console, requiring only "a couple of people driving the press."
By swapping out color for black where possible, GCR minimizes shadow-area color shifts caused by slight misregister
. It also combats ghosting, when page elements in certain positions relative to one another take up unequal amounts of the same color ink.
For at least six months in 2000 and 2001, subscription copies appeared quite often with bad, sometimes severe blemishes; sections of type were lost to improper cut-off; pages were crumpled and ripped from top to bottom; heavy set-off was common, and so was color misregister
; a portion of a page would go missing or appear entirely uninked.
On Creo's argument that stochastic screening can overcome the visibility of slight color misregister
, Fox says that "the color shift will not be visible, because you're not using a rosette pattern" as with conventional dots and angles.
Harris credits Heidelberg for staying on site and on task and press operators for "coming up on the learning curve with every run." Late delivery and misregister
are no longer issues, and virtually all pasters are problem-free now, he says.