Wash Deinking 

In General Printing Termsby Inkjet Insight

A method of removing ink and making recovered fibers suitable for the production of recycled paper. See Deinking.

Water Immersion Test

In General Printing Termsby Inkjet Insight

A test to determine a paperboard’s water resistance or degree of sizing in which a paperboard sample is weighed, then immersed in water for a set period of time, at which point …

Web 

In General Printing Termsby Inkjet Insight

Term for a continuous roll of paper that forms on a papermaking machine, or the paper roll that is used uncut in web offset lithography. Paper webs can either be cut into sheets …

Web Break 

In General Printing Termsby Inkjet Insight

The breaking of a paper web when it is on-press, which can occur at any point from start to finish, and which is caused by many factors. A web break …

Web Tension

In General Printing Termsby Inkjet Insight

In web offset lithography, the pull applied to a web of paper as it travels through the press. See Web Offset Lithography: Infeed and Web Control.

Wettability 

In General Printing Termsby Inkjet Insight

A property of printing inks that describes the ability of the dry ink film to resist bleeding, discoloring, fading, etc., upon exposure to moisture. An ink’s wettability is an important consideration …

Wetting 

In General Printing Termsby Inkjet Insight

A procedure performed in the ink-manufacturing process in which the particles of pigment are coated with varnish so as to enable them to be ground more easily and finely and disperse more completely in …

Wetting Agent 

In General Printing Termsby Inkjet Insight

A substance added—typically in small quantities—to a liquid in order to reduce its surface tension and allow solids to be more completely wet by the liquid. A variety of wetting …