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.

Used for Greeting Cards. A bristol stock, gloss coated on the outside and uncoated on the inside.

A printing press, which about prints on rolls of paper passed through the press in one continuous piece, as opposed to individual sheets of paper.

A halftone screen, which contains all the same sized dots.