Price Increases Announced Throughout the Ink Industry Due to continued increases in the costs of raw materials and volatility in the supply chain, Sun Chemical will raise prices globally on all packaging inks for all printing methods and chemistries on Dec. 1, 2011. The price increases will vary, but the average cost increase will be approximately 6 percent for most products. White inks, nitrocellulose varnish and other products containing the phthalocyanine green (PG7) pigment will each s...