RESOURCES & SUPPORT

We take great pride in making our clients feel confident about their jobs during the production process. To help you gain a better understanding of what’s happening to your project, we’ve compiled a glossary of terms that we commonly use in our industry.

A B C D E F G H I J L M O P R S T V W

• Abrasion Resistance

  The resistance to scratching of a surface of paper by other paper surfaces or other materials.

• Absorbency

  The ability of a material to take up moisture

• AC

  Author's Correction

• Accordion Fold

  A type of paper folding in which each fold runs in the opposite direction to the previous fold creating a pleated or accordion effect.

• Achromatic

  The non-colors... black, white and gray.

• Additive Colors

  In photographic reproduction, the primary colors of red, green and blue which are mixed to form all other colors.

• Aerate

  This refers to a manual process whereby an air stream is blown onto paper sheets to create a riffling effect that separates the sheets as they are fed to the printing press.

• American Paper Institute

  An organization that correlates all paper related information.

• Author's Alterations (AA's)

  Changes made after composition stage where customer is responsible for additional charges.

• Banker's Flap Envelope

  Also called wallet flap; the wallet flap has more rounded flap edges.

• Basis Weight

  Basis or basic weight refers to the weight, in pounds, of a ream (500 sheets) of paper cut to a given standard size for that particular paper grade.

• Binder's Board

  A heavy paperboard with a cloth covering that is used for hardback binding of books.

• Binding

  Various methods of securing folded sections together and or fastening them to a cover, to form single copies of a book.

• Blanket

  On offset presses a fabric-reinforced sheet of rubber to transfer the impression from the plate onto the paper.

• Bleed

  Extra ink area that crosses trim line, used to allow for variations that occur when the reproduction is trimmed or die-cut.

• Blind Embossing

  Embossed forms that are not inked, or gold leafed.

• Blind Image

  A problem that arises in the lithography process when an image loses its ink receptivity and fails to print.

• Blistering

  Although seemingly dry, paper does contain approximately 5% moisture. In cases where there is excessive moisture, and the paper is passed through a high heat-drying chamber, the moisture within the paper actually boils and causes a bubble or blistering effect.

• Block Resistance

  The resistance of coated papers to blocking. Reference, blocking.

• Blue-Line

  Photographic proof made from flats for checking accuracy, layout and imposition before plates are made. Also known as a dylux.

• Body

  The main shank or portion of the letter character other than the ascenders and descenders. Also: A term used to define the thickness or viscosity of printer's ink.

• Bounce 1

  A registration problem, usually on copiers, where the image appears to bounce back and forth. A bounce usually occurs in one direction depending on how the paper is passing through the machine. This is usually accented by card stock (especially if it's over the machine's spec). When a customer refuses a job for whatever reason.

• Coated (Paper)

  Paper coated with clay, white pigments and a binder. Better for printing because there is less picking.

• Coated Stock

  Any paper that has a mineral coating applied after the paper is made, giving the paper a smoother finish.

• Collate

  To gather sheets or signatures together in their correct order. (see Gather)

• Color Bars

  This term refers to a color test strip, which is printed on the waste portion of a press sheet. It is a standardized (GATF-Graphic Arts Technical Foundation) process which allows a pressman to determine the quality of the printed material relative to ink density, registration, and dot gain. It also includes the Star Target, which is a similar system designed to detect inking problems.

• Color Separating

  The processes of separating the primary color components for printing.

• Color Transparency

  Transparent film containing a positive photographic color image.

• Commercial Register

  Color registration measured within plus or minus one row of dots.

• Continuous Tone

  Image made of non-discernable picture elements which give appearance of continuous spectrum of grey values or tones.

• Contrast

  The degree of tonal separation or gradation in the range from black to white.

• Copy

  Refers to any typewritten material, art, photos etc., to be used for the printing process.

• Cutter

  Machine for accurately cutting stacks of paper to desired dimensions...can also be used to crease. Also trims out final bound books' top size (soft cover).

• Cutting Die

  Sharp edged device, usually made of steel, to cut paper, cardboard, etc., on a printing press.

• Cyan

  A shade of blue used in the four-color process; it reflects blue and green and absorbs red.

• Cylinder Gap

  The gap in the cylinders of a press where the grippers or blanket clamps is housed.

• Dampening

  An essential part of the printing process whereby cloth covered rubber rollers distributes the dampening solution to the plate.

• Densitometer

  An optical device used by printers and photographers to measure and control the density of color.

• Density

  The degree of tone, weight of darkness or color within a photo or reproduction; measurable by the densitometer. Reference, densitometer.

• Die

  Design, letters or shapes, cut into metal (mostly brass) for stamping book covers or embossing. An engraved stamp used for impressing an image or design.

• Die Cutting

  A method of using sharp steel ruled stamps or rollers to cut various shapes i.e. labels, boxes, image shapes, either post press or in line. The process of cutting paper in a shape or design by the use of a wooden die or block in which are positioned steel rules in the shape of the desired pattern.

• Digital Proof

  Color separation data is digitally stored and then exposed to color photographic paper creating a picture of the final product before it is actually printed.

• Dog Ear

  Occurs when you fold into a fold (such as a letter fold). At the side of one of the creases you get an indentation. It may look like a small inverted triangle.

• Dot

  The smallest individual element of a halftone.

• Dot Gain

  Darkening of halftone image due to ink absorption in paper causing halftone dots to enlarge. Terms to describe the occurrence whereby dots are printing larger than they should.

• Draw-down

  A method used by ink makers to determine the color, quality and tone of ink. It entails the drawing of a spatula over a drop of ink, spreading it flat over the paper.

• Drill

  The actual drilling of holes into paper for ring or comb binding.

• Drop Shadow

  A shadow image placed strategically behind an image to create the affect of the image lifting off the page.

• Dull Finish

  Any matte finished paper.

• Dummy

  A term used to describe the preliminary assemblage of copy and art elements to be reproduced in the desired finished product; also called a comp.

• Duotone

  Color reproduction from monochrome original. Keyplate usually printed in dark color for detail, second plate printed in light flat tints. A two-color halftone reproduction generated from a one-color photo.

• Eggshell Finish

  The finish of paper surface that resembles an eggshell achieved by omitting the calendar process. Reference, calendar rolls.

• Em

  A unit of measurement equaling 12 points or 4.5mm.

• Embossing

  To raise in relief a design or letters already printed on card stock or heavy paper by an uninked block or die. In rubber and plastic plate making the process is usually done by heat.

• Estimate

  The form used by the printer to calculate the project for the print buyer. This form contains the basic parameters of the project including size, quantity, colors, bleeds, photos etc.

• Folder

  Machine used to fold signatures down into sections.

• Folio or Page Number

  Number of page at top or bottom either centered, flushed left or flushed right often with running headline.

• Font

  The characters which make up a complete typeface and size.

• Form Rollers

  The rollers that come into direct contact with the plate of a printing press.

• Gathering

  Assembling sheets of paper and signatures into their proper sequence; collating.

• Ghosting

  Image which appears as a lighter area on a subsequent print due to local blanket depressions from previous image areas on a letterpress rotary machine as well as on an offset press.

• Grain

  Direction of fibers in a sheet of paper governing paper properties such as increased size changes with relative humidity, across the grain, and better folding properties along the grain.

• Gripper

  A series of metal fingers that hold each sheet of paper as it passes through the various stages of the printing process.

• Gripper Edge

  The grippers of the printing press move the paper through the press by holding onto the leading edge of the sheet; this edge is the gripper edge.

• Hairline register

  Printing registration that lies within the range of plus or minus one half row of dots. It is the thinnest of the standard printers' rules.

• Halftone

  Tone graduated image composed of varying sized dots or lines, with equidistant centers.

• Hickies

  Imperfections in presswork due to dirt on press, trapping errors, etc.

• High Key Halftone

  A halftone that is made utilizing only the highlight tones down through the middle tones.

• Highlight Dot

  The highest density of a halftone image.

• Highlights

  The lightest tones of a photo, printed halftone or illustration. In the finished halftone, these highlights are represented by the finest dots.

• Hollow

  That space on the spine of a case bound book between the block of the book and the case binding.

• House Sheet

  This is a term that refers to a paper that a printer keeps on hand in his shop.

• IBC

  Inside back cover.

• IFC

  Inside front cover.

• Image Area

  That portion of the printing plate that carries the ink and prints on paper.

• Image Setter

  High resolution, large format device for producing film from electronically generated page layouts.

• Imposition

  Arrangement of pages so that they print correctly on a press sheet, and the pages are in proper order when the sheets are folded.

• Impression

  Product resulting from one cycle of printing machine. The pressure of the image carrier, whether it be the type, plate or blanket, when it contacts the paper.

• Indicia

  Markings pre-printed on mailing envelopes to replace the stamp.

• Ink Fountain

  The device which stores and meters ink to the inking rollers.

• Inserts

  Extra printed pages inserted loosely into printed pieces.

• Job Number

  A number assigned to a printing project used for record keeping and job tracking. Also used to retrieve old jobs for reprints or reworking by customer.

• Jog

  To vibrate a stack of finished pages so that they are tightly aligned for final trimming.

• Layout

  A rendition that shows the placement of all the elements, roughs, thumbnails etc., of the final printed piece before it goes to print.

• Leading

  Space between lines of type; the distance in points between one baseline and the next.

• Letterpress

  Printing that utilizes inked raised surfaces to create the image.

• Line Copy

  Any copy that can be reproduced without the use of halftone screens.

• Lithography

  The process of printing that utilizes flat inked surfaces to create the printed images.

• Logotype

  A personalized type or design symbol for a company or product.

• M weight

  The actual weight of 1000 sheets of any given size of paper.

• Machine Coated

  Paper that has had a coating applied to either one or two of its sides during the papermaking process.

• Make Rready

  Process of adjusting final plate on the press to fine tune or modify plate surface.

• Matte Finish

  A coated paper finish that goes through minimal calendaring. Reference, calendaring.

• Midtone Dot

  Commonly taken as the area between highlight and shadow area of a subject's face in halftone image.

• Moire

  An undesirable halftone pattern produced by the incorrect angles of overprinting halftone screens.

• Mottle

  A term used to describe spotty or uneven ink absorption.

• OBC

  Outside back cover.

• Oblong

  A term used to describe printed books, catalogs etc., that are bound on their shorter side; also referred to as album bound.

• OFC

  Outside front cover.

• Offset

  The most commonly used printing method, whereby the printed material does not receive the ink directly from the printing plate but from an intermediary cylinder called a blanket which receives the ink from the plate and transfers it to the paper.

• Offset Lithography

  Indirect printing method in which the inked image on the press-plate is first printed onto a rubber blanket, then in turn offsets the inked impression on to the sheet of paper.

• Opacity

  Quality of papers that defines its opaqueness or ability to prevent two-sided printing from showing through.

• Opaque

  A quality of paper that allows relatively little light to pass through.

• Opaque Ink

  Ink that completely covers any ink under itself.

• Over Run

  Surplus of copies printed.

• Overhang Cover

  A cover of a book that extends over the trimmed signatures it contains.

• Overprinting

  Any printing that is done on an area that has already been printed.

• Page Makeup

  The assemblage of all the necessary elements required to complete a page.

• Page Proofs

  Proofs made up from pages.

• Paste Drier

  Any of a variety of compounds used in enhancing the drying properties of printing inks.

• Perf Marks

  Markings usually dotted lines at edges showing where perforations should occur.

• Perfect Binding

  Binding process where backs of sections are cut off, roughened and glued together, and rung in a cover.

• Perfecting

  Printing both sides of the paper (or other material) on the same pass through the printing machine.

• Perfecting Press

  A printing press that prints on both sides of the page in a single pass.

• Perforating

  Punching small holes or slits in a sheet of paper or cardboard to facilitate tearing along a desired line.

• Pica

  Standard of measurement, 1/6 inch. 1 pica = 12 points 72 points = 1 inch

• Picking (2)

  An occurrence in printing whereby the tack of ink pulls fibers or coating off the paper surface, leaving spots on the printed surface.

• Plate

  Reproduction of type or cuts in metal, plastic, rubber, or other material, to form a plate bearing a relief, planographic or intaglio printing surface.

• Plate Cylinder

  The cylinder on a printing press on which the plate is mounted.

• Ppi

  Pixels per inch.

• Press-Proof

  Actual press sheet to show image, tone values and colors as well as imposition of frame or press-plate.

• Primary Colors

  In printing the four primary colors are cyan (blue), magenta (red), yellow and black.

• Printers Pairs

  Two consecutive pages as they appear on a flat or signature.

• Process Inks

  Printing inks, usually in sets of four colors. The most frequent combination is yellow, magenta, cyan, and black, which are printed, one over another in that order, to obtain a colored print with the desired hues, whites, blacks, and grays.

• Register

  The arrangement of two or more images in exact alignment with each other.

• Register Marks

  Any crossmarks or other symbols used on layout to assure proper registration.

• Right Angle Fold

  A term that denotes folds that are 90 degrees to each other.

• Rub Proof

  That stage of printed ink where the maximum dryness is achieved, and the ink will not smudge.

• Rubine

  A pigment somewhat redder than true magenta.

• Run-Around

  A term given to copy that accommodates the lines of a picture or other image or copy.

• Saddle Stitching

  Stitching where the wire staples pass through the spine from the outside and are clinched in the center. Only used with folded sections, either single sections or two or more sections inset to form a single section.

• Satin Finish

  A smooth delicately embossed finished paper with sheen.

• Score

  Impressions or cuts in flat material to facilitate bending or tearing.

• Screen Angles

  The placement of halftone screens to avoid unwanted moire patterns. Frequently used angles are black 45deg, magenta 75deg, yellow 90deg, and cyan 105deg.

• Screen Ruling

  A measurement equaling the number of lines or dots per inch on a halftone screen.

• Self Cover

  A cover made out of the same paper stock as the internal sheets.

• Shadow Dot

  The lowest density of a halftone image.

• Sharpen

  To decrease the dot size of the halftone which in turn decreases the color strength.

• Sheetwise

  The printing of two different images on two different sides of a sheet of paper by turning the page over after the first side is printed and using the same gripper and side guides.

• Show Through

  A problem that occurs when the printing on one side of a sheet is seen from the other side.

• Side Guide

  The guides on the sides of the sheet fed press that position the sheet sideways as the paper is led towards the front guides.

• Signature (Section)

  Printed sheet (or its flat) that consists of a number of pages of a book, placed so that they will fold and bind together as a section of a book. The printed sheet after folding.

• Smoothness

  That quality of paper defined by its levelness which allows for pressure consistency in printing, assuring uniformity of print.

• Spine

  Back edge of a book.

• Spiral Bind

  A binding whereby a wire or plastic is spiraled through holes punched along the binding side.

• Spot Color

  Small area printed in a second color.

• Star Target

  The Graphic Arts Technical Foundation, GATF has established various quality control images; the star target appears along with the color bar and helps the pressman detect any irregularity in the ink spread. Reference, Color Bars

• Stet

  A proofreader's symbol that is usually written in the copy margin, that indicates that the copy, which was marked for correction, should be left as it was.

• Stock

  A term for unprinted paper or other material to be printed.

• Strip-In

  To add an element, such as copy that is shot separately, and then stripped into place on a goldenrod flat.

• Tack

  The adhesive quality of inks.

• Tensile Strength

  A paper's ability to withstand pressure.

• Transparent

  Inks that do not block out the colored inks that they print over, but instead blend with them to create intermediate colors.

• Trapping

  The process of printing wet ink over printed ink which may be wet or dry.

• Trim Marks

  Marks placed on the sheet to indicate where to cut the page.

• Varnish

  A clear shiny ink used to add gloss to printed pieces. The primary component of the ink vehicle. Reference, vehicle.

• Vellum

  A finish of paper that is rough, bulky and has a degree of tooth.

• Velox

  A photographic print which is made from a negative.

• W&T

  An abbreviation for work and turn.

• Washup

  The procedure of cleaning a particular ink from all of the printing elements (rollers, plate, ink fountain etc.) of a press.

• Watermark

  A translucent logo that is embossed during the papermaking process while the paper slurry is on the dandy roll. Reference, dandy roll