Platinum Sponsors
Pageflex Konica Minolta Canon See Impossible
Platinum Sponsors
Pageflex Konica Minolta All in Print Canon See Impossible
Print Industry Search EngineEnhanced by Outputlinks
American Printer1800+ Print Sites

Channels Served

Binding & FinishingCtpDigital PressesEnvironmentHow ToInkjet Wide FormatIn-PlantPaper InkSheetfedSmall Commercial PrintersWeb PressesWork Flow
Print Industry Search EngineEnhanced by Outputlinks
American Printer1800+ Print Sites

Woe is UV

UV curing is wonderful — but it can be challenging to keep the press ’ back cylinder clean . Some blame the ink/fountain solution balance for allowing ink to accumulate on the blanket outside of the stock area. Even the slightest incompatibility results in small ink deposits outside the paper area that are then transferred to the impression cylinder and cured when the UV light hits it.

If this ink is left there for a few jobs, its physical height can damage the blanket. So how do you remove that baked-on ink? Popular (albeit timeconsuming) methods involve alcohol and Scotch Brite pads, blanket wash and steel wool, methylethylketone, razor blade and solvent, acetone, and methylene chloride.

In most cases, using an abrasive results in scratching and metal loss. If you attempt to resell the press, the damage will stand out like a sore thumb during the inspection.

Management may roll their eyes, but the proper approach is to cut blanket packing to just under the size of the stock being printed. (Some printers use a strippable blanket and cut the blanket, but this is an expensive solution.)

Admittedly, it’s time consuming to cut packing and mount it for each stock size change. Opening up a large-format press and hanging a new packing does take time, and wrinkles can occur if thin packing paper is used. Some savvy printers have packings cut for every size of sheet run and store them by the press. Bonus: Running thick board or plastic eliminates the need for packing because the blanket won’t contact the back cylinder.

Weigh your options if you’ll be doing a lot of short-run work on a sheetfed UV press. Changing packings for every job is impractical. Plan ahead—the alternative is good old-fashioned elbow grease. Not to mention a lot of time! Raymond J. Prince, President, GreensheetBIZ (Retired), a division of OutputLinks Communications Group, is a leading pressroom technical expert. Talk to Ray at B2Me.me/AC2

Leave a comment

All comments are reviewed prior to posting.

Make sure you enter the (*) required information where indicated.Basic HTML code is allowed.



Print Industry Search EngineEnhanced by Outputlinks
American Printer1800+ Print Sites

Channels Served
Binding & FinishingCtpDigital PressesEnvironmentHow ToInkjet Wide FormatIn-PlantPaper InkSheetfedSmall Commercial PrintersWeb PressesWork Flow
Platinum Sponsors
Pageflex Konica Minolta All in Print Canon See Impossible
Platinum Sponsors
Pageflex Konica Minolta All in Print Canon See Impossible
Gold Sponsors
Bell Howell
XMPie
MB Bauerle
PGSF
BCC Software
Pixartprinting
BCC Software
Quest Consulting
OutputLinks Communications Group Sites
OL Group
Corporate Headquarters
OutputLinks Communications Group
2100 West Loop South, Suite 900
Houston, Texas 77027-3515
Phone: +1 713-300-0674
Admin@OutputLinksCG.com
Financial Supporters
Corporate Headquarters
OutputLinks Communications Group
2100 West Loop South, Suite 900
Houston, Texas 77027-3515
Phone: +1 713-300-0674
Admin@OutputLinksCG.com