The effect that happens when a speck of dust or debris (frequently dried ink) adheres to the printing plate and produces a spot or imperfection in the printing.

Then the metal sheet that is used to paper using the foil stamping procedure. Frequently gold colored, but available in lots colors.

The littlest individual element of a halftone.

The level of tonal gradation or separation in the range from black to white.

Halftone screens usually used in newsprint; that is up to 85 lines per inch.

When ink or coating causes printed sheets of paper in a pile to stick together, when they are separated that cause a damage. This is usually caused by not enough anti-offset powder or too much ink, and normally ruins the printed task.

The paper which containing no acidity or acid producing chemicals that degrade less over time than acidic papers.

This is a standard stock usually used for envelopes, also known as White Wove. The 28# is thicker and heavier than the 24# as well.

A translucent mark or image, which is embossed during the papermaking process, or printed onto paper that is visible when the paper is held up to the light.

A printing procedure whereby slow drying ink is used to paper and, while the ink is still wet, is softly dusted with a resinous powder. Then the paper passes through a heat chamber where the powder melts as well as fuses with the ink to produce a raised surface.