SYMPTOM-After the ink is dried, the ink can easily be rubbed off the sheet as a powder.

NOTE: Chalking is not apparent until after the job has been printed and dried. A chalked job can sometimes be salvaged by overprinted with a gloss varnish.

probable cause remedy 1 Excessive vehicle penetration into the substrate. Contact paper manufacturer if job has been completed. If job is not complete, try adding Superior’s product number OV-196 (Super Water Repellent Varnish). 2 Excessively acidic stock caused slow drying. Check stock pH; if too acidic, add W-4280 Combination Drier (up to 1/4 oz. per pound of ink) or W-1401 Liquid Fountain Additive or consult ink technician to reformulate ink. 3 Fountain solution too acidic. Make more alkaline (e.g. raise pH from 4.0 to 4.5). *4 Ink formulated too soft, causing emulsification. Add 1/2 oz. of OV-196 and consult ink technician if formulation of ink with better water fighting properties is required. *Although not the most probable cause, this should be investigated and ruled out first.