Accordion foldingThis elementary form of binding constitutes two or more parallel folds, which make the profile of the paper the shape of the letter Z.
Against the grainMost paper will tear in a specific direction (according to paper fibres). If you tear against the grain, it's at right angles to the grain direction. Also known as cross grain.
Backing-upPrinting on the reverse side of a sheet of paper which has already been printed.
BindingTo fasten pages together using glue, wire, thread, plastic comb or wire comb.
BleedPrinting which deliberately extends off the edge of the page (and is trimmed off).
Colour barA range of different colour boxes which are used to test colour consistency.
Cover stockThe paper used to cover a document (if thicker than the paper inside the document). Otherwise it's known as self-cover.
Crop (image)Cropping an image refers to trimming the outer edges of an image (generally done to improve page composition or image composition).
Crop (paper)This is where the page is trimmed after printing. Also known as trim.
Crop marksPrinted lines which dictate where a page is to be trimmed. Also known as trim marks.
Dots per inch (DPI)
Four colour processPrinting technique using cyan, magenta, yellow and black. Also known as process colour or full colour.
French foldingPaper is folded in two places at right angles.
Gloss finishA shiny paper finish.
GrainThe fibre of most paper is directional (and will tear in a specific direction).
HickeyA printed imperfection caused by a mark on the printing press.
ImpositionThe page order in which pages are printed, in order to ensure the correct order when folded and bound.
Lines per inchThe number of rows or columns per inch. So 300 lpi is 300 lines for every inch.
Matte finishDull (non-shiny) paper or dull varnish.
OpacityThe amount of printing on a printed sheet which can be seen on the other side of the page. Related to show-through.
OversAdditional copies in excess of the amount ordered. Also known as over-run.
Page countThe total number of all pages in a document (including front and back of every page).
Perfect bindingNotches are made in the spine side of sheets of paper and then glued to the cover spine. Also known as burst binding.
PMS colourThe Pantone colour matching system is used to specify a particular spot colour. Also known as Pantone colour.
Ream500 sheets of paper.
RegisterTo co-align multiple colours when printed (to ensure print consistency/accuracy).
Saddle stitchFolding a document at the spine, and then stapling in the seam.
Self-coverSame weight paper is used for the cover as the inside of a document.
SpineBinding edge of a document.
Spread (facing pages)
Trim sizeThe size of a document after it has been trimmed. Also known as crop size.
UV coatingA film or liquid spot coating which adheres to the stock. Can be gloss or matte finish.
A transparent liquid used to:
- give a gloss or matte finish
- seal the print (especially when heavy or solid coverage)
- reduce scuffing