To print a single image twice so it has two layers of ink.

Basis weight of paper in grams per square meter (gsm).

A parallel lined paper that has a handmade look. Laid lines are close together and run against the grain; chain lines are farther apart and run with the grain.

Paper that, due to mistakes or accidents, must be thrown away instead of delivered printed to the customer, as compared to waste.

The resistance to scratching of a surface of paper by other paper surfaces or other materials.

The ability of a material to take up moisture.

(Neutral pH of 7.0) During paper production, treatment employed with a mild base is employed to neutralize the natural acids occurring in wood pulp.  Buffering may also be used to prevent the formatio [..]

Black, white and greys. Artwork that is executed without color. Also called monochromatic.

Any change made by the customer after copy or artwork has been given to the service bureau, separator or printer. The change could be in copy, specifications or both. Also called AA, author alteration [..]

Accepted test methodology to determine yellowing.