At right angles to the grain direction of the paper being used, as compared to with the grain.
Coating in a water base and applied like ink by a printing press to protect and enhance the printing underneath.
All original copy, including type, photographs and illustrations intended for printing.
To adjust an image on one side of a sheet so that it aligns back-to-back with an image on the other side.
The joining of leafs or signatures together with either wire, glue or other means.
Usually a department within a printing company responsible for folding, collating, stitching, trimming etc. of various printing projects.
A rubber coated pad, mounted on a cylinder of an offset press that receives the inked image from the plate and transfers it to the surface to be printed.
Printing that extends to the edge of a sheet or page after trimming.
Image debossed or embossed but not printed with ink or foil.
A type of paper commonly used for writing, printing and photocopying.
Paper coated with chemicals that enable transfer of images from one sheet to another with pressure from typing and writing.
Abbreviation for cyan, magenta, yellow and key (black), the four process colors, if combined together can be made to produce the full colour gamut.
Paper with a coating of clay and other materials that improves reflectivity and ink holdout. This paper is produced in four major categories cast, gloss, dull and matte.
To organise printed substances in a specific order.
Method by which a continuous tone colour image is separated into the four process colours for print.
The degree of tones in an image ranging from highlight to shadow.
To mechanically press a rule into a heavy paper or board to enable it to fold without cracking.
When middle pages of a folded signature extending slightly beyond outside pages. Also called feathering, push out and thrust.
To trim edges of a picture or page to make it fit or remove unwanted portions.
Lines near the edges of an image indicating portions to be reproduced. Also called cut marks and tick marks.
Usually a custom ordered item to trim specific and unusual sized printing projects.
An abbreviation of Computer-to-plate; a process of printing directly from a computer to plate used by a printing press.
To press an image into paper so it lies below the surface.
Technique of using a computer to design images and pages, and assemble type and graphics, then using a laser printer or imagesetter to output the assembled pages onto paper, film or printing plate. Abbreviated DTP.
To cut irregular shapes in paper or paperboard using a die.
Phenomenon of halftone dots printing larger on paper than they are on films or plates, reducing detail and lowering contrast. Also called dot growth, dot spread and press gain.
Considered as “dots per square inch,” a measure of output resolution in relationship to printers, imagesetters and monitors.
Simulation of the final product. Also called mock-up.
To press an image into paper so it lies above the surface.
A printing method using a plate with an image cut into its surface.
General term for trimming, folding, binding and all other post press operations.
To foil stamp and emboss an image.
A method of printing that releases foil from its backing when stamped with the heated die.
Size, style, shape or layout of a layout or printed product.
A technique of printing that uses cyan, magenta, yellow and black to simulate full colour images.
A predominant direction in which fibres in paper become aligned during manufacturing. Also called machine direction.
Weight of paper in grams per square meter (gsm).
Arrangement of type and visual elements along with specifications for paper, ink colours and printing processes that, when combined, convey a visual message.
Visual elements that supplement type to make printed messages more clear or interesting.
Shades of grey ranging from black to white.
Paper weight is measured in grams per square metre.
An expandable portion of a pocketed folder or envelope.
Subjective term referring to a thin line or close register.
Picture with a different range of shades of tones created by varying dots.
Spot or imperfection in printing, most visible in areas of heavy ink coverage.
Laser output device using photosensitive paper or film.
An arrangement of pages on mechanicals or flats so they will appear in proper sequence after press sheets are folded and bound.
Referring to an ink color, one impression equals one press sheet passing once through a printing unit.
Lines on a negative showing the exact size, shape and location of photographs or other graphic elements. Also called holding lines.
To die cut the top layer, but not the backing layer, of self-adhesive paper.
A thin transparent plastic sheet applied to usually a thick stock providing protection against liquid and heavy use, and usually accents existing colour, providing a glossy effect.
Method of printing using plates whose image areas attract ink and whose non image areas repel ink. Non image areas may be coated with water to repel the oily ink or may have a surface, such as silicon, that repels ink.
All activities required to prepare a press or other machine to function for a specific printing or bindery job, as compared to production run.
An undesirable pattern resulting when halftones and screen tints are made with improperly aligned screens, or when a pattern in a photo, such as a plaid, interfaces with a halftone dot pattern.
A printing technique that transfers ink from a plate to a blanket to paper instead of directly from plate to paper.
To print one image over a previously printed image, such as printing type over a screen tint.
Premixed ink colours that are often used for printing as a spot colour.
Press capable of printing both sides of the paper during a single pass.
To bind sheets that have been ground at the spine and are held to the cover by glue.
Test sheet made to reveal errors or flaws, predict results on press and record how a printing job is intended to appear when finished.
Cross-hair lines on mechanicals and film that help keep flats, plates, and printing in register.
Printing method whose image carriers are surfaces with two levels having inked areas higher than non-inked areas. Relief printing includes block printing, flexography and letter press.
Abbreviation for red, green, blue, the additive colour primaries.
To bind by stapling sheets together where they fold at the spine, as compared to side stitch.
To compress paper along a straight line so it folds more easily and accurately. Also called crease.
A method of printing by using a squeegee to force ink through an assembly of mesh fabric and a stencil.
Usually in the book arena, a publication not having a cover stock. A publication only using text stock throughout.
Any area of the sheet receiving 100 percent ink coverage, as compared to a screen tint.
To print one ink over another or to print a coating, such as varnish, over an ink. The first liquid traps the second liquid.
Liquid applied to a printed sheet, then bonded and cured with ultraviolet light.
Liquid applied as a coating for protection and appearance.
A method of wire binding books along the binding edge that will allow the book to lay flat.
To print on one side of a sheet of paper then turn the sheet over from left to right and print the second side using the same gripper edge to print the second side.