PAPER TYPES
Paper can be separated into two main categories: uncoated and coated stocks.
Uncoated stocks:
Uncoated stock is paper that has no coated pigment applied to reduce the absorbency or increase the smoothness. The uncoated finishes can be described as vellum, antique, wove, or smooth.
Coated stocks:
A coated stock has a surface coating that has been applied to make the surface more receptive for the reproduction of text and images in order to achieve sharper detail and improved color density. By adding a coated clay pigment, the objective of coating the stock is to improve the smoothness and reduce the absorbency. Coated paper finishes can be categorized as matte, dull, cast, gloss, and high gloss. The coating can be on both sides of the stock (coated two sides, "C2S") or on one side only (coated one side, "C1S").
From these subcategories, paper stocks are then separated into types such as offset, bond, cover, index, and vellum bristol. The following tables show these types, along with their common colors, weights, and uses.