Bleed - Printing that extends to the edge of a sheet or page after trimming.
Bond paper - Category of paper commonly used for printing and photocopying. Traditionally, 20#.
C1S and C2S - Abbreviations for coated one side and coated two sides.
Caliper - (1) Thickness of paper or other substrate expressed in thousandths of an inch (mils or points), pages per inch (ppi), thousandths of a millimeter (microns) or pages per centimeter (ppc). (2) Device on a sheetfed press that detects double sheets or on a binding machine that detects missing signatures or inserts.
Carbonless Paper - Paper coated with chemicals that enable transfer of images from one sheet to another with pressure from writing or typing.
CMYK - Abbreviation for cyan, magenta, yellow and key (black), the four process colors.
Coated Paper - Paper with a coating of clay and other substances that improves reflectivity and ink holdout. Mills produce coated paper in the four major categories cast, gloss, dull and matte.
Collate - To organize printed matter in a specific order as requested.
Color Control Bar - Strip of small blocks of color on a proof or press sheet to help evaluate features such as density and dot gain. Also called color bar, color guide and standard offset color bar.
Color Correct - To adjust the relationship among the process colors to achieve desirable colors.
Color Separation - (1) Technique of using a camera, scanner or computer to divide continuous-tone color images into four halftone negatives. (2) The product resulting from color separating and subsequent four-color process printing. Also called separation.
Coverage - Extent to which ink covers the surface of a substrate. Ink coverage is usually expressed as light, medium or heavy.
Cover - PaperCategory of thick paper used for products such as posters, menus, folders and covers of paperback books.
Cure - To dry inks, varnishes or other coatings after printing to ensure good adhesion and prevent off-set.
Data Compression - Technique of reducing the amount of storage required to hold a digital file to reduce the disk space the file requires and allow it to be processed or transmitted more quickly.
Dots-per-inch (DPI) - Measure of resolution of input devices such as scanners, display devices such as monitors, and output devices such as laser printers, imagesetters and monitors. Abbreviated DPI. Also called dot pitch.
Duplex Paper - Thick paper made by pasting highlights together two thinner sheets, usually of different colors. Also called double-faced paper and two-tone paper.
EPS - Encapsulated Post Script, a known file format usually used to transfer post script information from one program to another. Typically used for vector files.
Graphics - Visual elements that supplement type to make printed messages more clear or interesting.
Gripper Edge - Edge of a sheet held by grippers on a sheetfed press, thus going first through the press. Also called feeding edge and leading edge.
GSM - The unit of measurement for paper weight (grams per square meter).
Gutter - In the book arena, the inside margins toward the back or the binding edges.
Image Area - The actual area on the printed matter that is not restricted to ink coverage,
Imposition - Arrangement of pages on mechanicals or flats so they will appear in proper sequence after press sheets are folded and bound.
Impression - (1) Referring to an ink color, one impression equals one press sheet passing once through a printing unit. (2) Referring to speed of a press, one impression equals one press sheet passing once through the press.
In-Plant Printer - Department of an agency, business or association that does printing for a parent organization. Also called captive printer and in-house printer.
Leading - Amount of space between lines of type.
Linen Finish - Embossed finish on text paper that simulates the pattern of linen cloth.
Logo - (Logotype)A company, partnership or corporate creation (design) that denotes a unique entity. A possible combination of letters and art work to create a "sole" entity symbol of that specific unit.
Margin - Imprinted space around the edge of the printed material.
Offset Printing - Printing technique that transfers ink from a plate to a blanket to paper instead of directly from plate to paper.
Opacity - (1) Characteristic of paper or other substrate that prevents printing on one side from showing through the other side. (2) Characteristic of ink that prevents the substrate from showing through.
Opaque - (1) Not transparent. (2) To cover flaws in negative with tape or opaquing paint. Also called block out and spot.
Overprint - To print one image over a previously printed image, such as printing type over a screen tint.
Pantone - A set of standard colors for printing, each of which is specified by a single number. You can buy a Pantone swatch book containing samples of each color. Some computer graphics software allows colors to be specified as Pantone numbers. Also known as spot color.
Parallel Fold - Method of folding. Two parallel folds to a sheet will produce 6 panels.
Perforating - Taking place on a press or a binder machine, creating a line of small dotted wholes for the purpose of tearing-off a part of a printed matter (usually straight lines, vertical or horizontal).
Pixel - Short for picture element, a dot made by a computer, scanner or other digital device.
Prepress - Camera work, color separations, stripping, platemaking and other prepress functions performed by the printer, separator or a service bureau prior to printing.
Press Time - Amount of time that one printing job spends on press, including time required for makeready.
Printer Spreads - Document layout made so pages are imposed for printing, as compared to reader spreads.
Proof - Test sheet made to reveal errors or flaws, predict results on press and record how a printing job is intended to appear when finished.
Reader Spread - Document layout made in two page spreads as readers would see the pages, as compared to printer spread.
Register - To place printing properly with regard to the edges of paper and other printing on the same sheet. Such printing is said to be in register.
Resolution - Sharpness of an image on film, paper, computer screen, disc, tape or other medium.
Reverse - Type, graphic or illustration reproduced by printing ink around its outline, thus allowing the underlying color or paper to show through and form the image. The image 'reverses out' of the ink color. Also called knockout and liftout.
RGB - Abbreviation for red, green, blue, the additive color primaries.
Saddle Stitch - To bind by stapling sheets together where they fold at the spine, as compared to side stitch. Also called pamphlet stitch, saddle wire and stitch bind.
Self Cover - Usually in the book arena, a publication not having a cover stock. A publication only using text stock throughout.
Separations - Usually in the four-color process arena, separate film holding qimages of one specific color per piece of film. Black, Cyan, Magenta and Yellow. Can also separate specific PMS colors through film.
Signature - Printed sheet folded at least once, possibly many times, to become part of a book, magazine or other publication.
Spine - Binding edge of a publication
Spread - Two pages that face each other and are designed as one visual or production unit.
Text Paper - Non-cover weight paper.
UV Coating - Liquid applied to a printed sheet, then bonded and cured with ultraviolet light.