Inks containing a vehicle whose binder is water soluble or water dispersible.
The ability to withstand the effects of water with minimal or acceptable levels of change.
High finish produced on paper or board as it passes through the calender stack by moistening either one or both sides with water.
Water-based Dye Inks
Inks that are environmentally friendly with a great colour gamut.
Water-based Pigmented Inks
Environmentally friendly with increased light stability and sometimes water-fastness.
The image impressed into the formation of paper by the dandy roll on the wet end of the paper machine; can be seen by holding the watermarked sheet up to the light. Can be either a wire mark or a shaded image.
A condition whereby a material is unaffected by water.
A form of paper curl resulting when the sheet edges in the pile absorb moisture that the centre of the pile cannot absorb; or the sheet edges surrendering moisture while the centre remains moist.
Warping effect in paper that is the result of the edges of the sheet having picked up moisture and expanded. Will normally happen only in a pile that prevents the centre of the sheets from picking up the same amount of moisture and levelling out or cockling. It is usually a warm weather problem caused by improper balance between moisture content of the paper or too high humidity in the air.
The effect of atmospheric elements on a test subject when exposed out of doors in a natural environment or under environmental influences.
The roll of paper that is used in web or rotary printing.
A tear in a web roll during the printing process.
Automatic feeding system whereby substrates or carriers are printed on a continuous roll.
A printing press that prints on rolls of paper passed through the press in one continuous piece, as opposed to sheets of paper.
The removal of unwanted vinyl from a graphic usually with a sharp knife.
Waste Electrical and Electronic Equipment. Legislation that applies to the disposal of electrical and electronic equipment. Also relates to RoHS. See: www.defra.gov.uk/environment
The side of a screen where the ink is and the squeegee is dragged across.
The first stages of a papermaking machine before the drying process; at the wet end, stock is fed in and much of the high percentage of water is eliminated by drainage, suction and press rollers, leaving a web of paper which then passes to the drying cylinders.
Wet on Wet
Describes the printing of multiple colours onto a substrate before the previously printed colours have dried.
Papers to which this term applies retain an appreciable percentage of their mechanical strength after soaking in water, and are made by the addition of a resin to the stock during paper manufacture. This resin cements the fibres together and the bond tends to improve with age.
White Lined Board
A multi-ply construction made predominantly from selected waste paper.
The paper is perceived to be white due to high clarity, elevated diffusion and minimum perception of hues.
An inkjet output term for when ink is absorbed into paper media and then follows the grain of the paper.
The side of a sheet next to the wire in manufacturing; opposite from the felt or top side; usually not as smooth as the felt or top side.
With the Grain
Folding or feeding paper into a press parallel to the grain of the paper.
Woodfree is a description of pulp and paper meaning that they contain little or no mechanically ground fibres. Implies that fibres are chemically treated, thereby eliminating lignin (the substance that binds wood fibres together in the tree) and making the product purer, whiter and stronger. Woodfree is an historical paper-making term shortened from 'groundwood-free' and does not denote a paper or pulp made from materials other than wood.
Wood reduced to a pulp for subsequent papermaking processes; can be mechanical, chemical or combination; TMP and CTMP.
A sheet with impressions in it formed by a dandy roll covered with woven wire.
Waste and Resource Action Programme. A Government-backed initiative to reduce waste and increase recycling. See: www.wrap.org.uk
Another name for bond paper.
WWF-UK Forest & Trade Network
A voluntary collection of British companies committed to the improvement of forest management standards. The group is administered by the World Wide Fund for Nature and Robert Horne is a member. See: www.wwf-uk.org/ftn
What You See Is What You Get. The hypothetical condition in which it is alleged that what you see on the screen is what you get on the page.