useful information

Glossary - N

Natural Coloured

Applied to papers whose colours result from the nature of the stock used when no bleach or colouring has been added. In the case of Kraft, its natural colour is a tan or light brown.

Natural Resins

The products obtained from the exudations of trees and sometimes used as adhesive, coatings or sealer bases. Common natural resins are the copals, damar, shellac accroides, sandarac, rosin and mastic.

Navigation

The structure for and the act of moving around a web site.

Negative

A photographic image of originals on paper, film or glass in reverse from that of the original copy. Dark areas appear light and vice versa.

Negative assembly

Assembly of negatives on a flat for plate making.

Negative photographic film

Carries an image in which the values of the original are reversed.

Neoprene rubber

A polymer of chloroprene, it is used as an adhesive base. Commonly used where oil and gasoline resistance is required. Resistance to swelling action of aromatics (pure and fuels) is poor but much better than natural rubber. Also used to coat doctor or metering rolls.

Newsprint

An unsized, low quality, inexpensive and absorbent paper used for printing newspapers.

Nick

The notches in photographic film that designate the emulsion side, when fumbling in the dark.

Nip

Line of contact between two rolls. Often referred to as the pull or draw rolls of a web press.

Nipping

A stage in book binding where after sewing the sheets are pressed to expel air.

Non-Impact Printing

This encompasses various print processes including Thermal (direct and indirect), Ink Jet and Toner.

Non-scratch inks

Inks resistant to abrasion when dry.

Non-woven materials

Usually refers to paper 'tissues' or synthetics such as tynek.

Novelty printing

Printing on items such as pens, clothing, balloons.

Nut

An en quod.