The resultant pulp may be bleached or unbleached and is noted for its strength of fiber. Generally refers to paper that is manufactured specifically for use on offset presses. It is characterized by strength, cleanliness, pick-resistance and relative freedom from curl. Today it is commercially manufactured firm cellulose fibers. Printing is achieved from plastic or metal type, where the image is raised above the non-printing area, which is recessed.
Ink is applied to the raised areas and then transferred directly to the paper.
Tile image area is rendered ink receptive and the non-image area rendered water receptive. When the plate cylinder comes in contact with the ink rollers the image area attracts ink and the non-image area repels ink. The blanket cylinder then comes in contact with paper and the image is transferred from the blanket to the paper. Today it is usually referred to as cotton fiber paper. REAM Commonly understood as five hundred sheets of fine paper.