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Saddle Stitch
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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.
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Sans Serif Font
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Type font without short finishing strokes projecting from the ends of its characters, i.e.: Arial or Helvetica.
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Satin Finish
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Alternate term for dull finish on coated paper.
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Scaling
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The enlargement or reduction of an image or copy to fit a specific area.
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Scanner
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Device used to make color separations, halftones, duo tones and tri tones. Also a device used to scan art, pictures or drawings in desktop publishing.
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Score
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To compress paper along a straight line so it folds more easily and accurately. Also called crease.
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Screen Angles
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Angles at which screens intersect with the horizontal line of the press sheet. The common screen angles for separations are black 45 degree, magenta 75 degree, yellow 90 degree and cyan 105 degree.
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Screen Density
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Refers to the percentage of ink coverage that a screen tint allows to print. Also called screen percentage.
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Screen Printing
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Method of printing by using a squeegee to force ink through an assembly of mesh fabric and a stencil.
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Screen Ruling
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A measurement equaling the number of lines or dots per inch on a halftone screen.
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Screen Tint
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Color created by dots instead of solid ink coverage. Also called Benday, fill pattern, screen tone, shading, tint and tone.
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Screened Print
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A photo print made by using a halftone negative; also called a velox.
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Scum
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Unwanted ink marks in the non-image area.
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Selective Binding
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Placing signatures or inserts in magazines or catalogs according to demographic or geographic guidelines.
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Self Cover
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Usually in the book arena, a publication not having a cover stock. A publication only using text stock throughout.
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Self Mailer
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A printed item independent of an envelope. A printed item capable of travel in the mailing arena independently.
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Separated Art
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Art with elements that print in the base color on one surface and elements that print in other colors on other surfaces. Also called preseparated art.
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Separations
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Usually in the four-color process arena, separate film holding images of one specific color per piece of film. Black, Cyan, Magenta and Yellow. Can also separate specific PMS colors through film.
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Serif Font
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Type font with short finishing strokes projecting from the ends of its characters, i.e.: Times or Palatino.
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Server
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Computer that provides service for a website or network, containing all files and enabling them to be accessed from the web or network computers.
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Setoff
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Undesirable transfer of wet ink from the top of one sheet to the underside of another as they lie in the delivery stack of a press. Also called offset.
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Shade
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Hue made darker by the addition of black, as compared to tint.
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Shadows
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Darkest areas of a photograph or illustration, as compared to midtones and high-lights.
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Sharpen
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To decrease the dot size of the halftone, which in turn decreases the color strength.
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Sheetfed Press
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Press that prints sheets of paper, as compared to a web press.
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Sheetwise
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Technique of printing one side of a sheet with one set of plates, then the other side of the sheet with a set of different plates. Also called work and back.
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Shingling
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Allowance made during paste-up or stripping to compensate for creep. Also called stair stepping.
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Short Ink
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Ink that is smooth and creamy but does not flow freely.
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Show Through
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A problem that occurs when the printing on one side of a sheet is seen from the other side.
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Side Guide
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The mechanical register unit on a printing press that positions a sheet from the side.
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Side Stitch
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To bind by stapling through sheets along, one edge, as compared to saddle stitch. Also called cleat stitch and side wire.
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Signature
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A sheet of printed pages which when folded becomes part or whole of a book or publication.
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Silhouette Halftone
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A halftone with the background screen removed.
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Size
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Compound mixed with paper or fabric to make it stiffer and less able to absorb moisture.
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Skid
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A pallet used for a pile of cut sheets.
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Slip Sheets
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Separate sheets (stock) independent from the original run positioned between the "printed run" for a variety of reasons.
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Slitting
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A term to describe the process of cutting of printed sheets by the cutting wheels of a printing press.
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Smoothness
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That quality of paper defined by its levelness that allows for pressure consistency in printing, assuring uniformity of print.
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Solid
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Any area of the sheet receiving 100 percent ink coverage, as compared to a screen tint.
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Soy-Based Inks
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Inks using vegetable oils instead of petroleum products as pigment vehicles, thus are easier on the environment.
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Specifications
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Complete and precise written description of features of a printing job such as type size and leading, paper grade and quantity, printing or binding method. Abbreviated specs.
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Specular Highlight
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Highlight area with no printable dots, thus no detail, as compared to a diffuse highlight. Also called catchlight and dropout highlight.
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Spine
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The binding edge of a book or publication.
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Spiral Bind
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To bind using a spiral of continuous wire or plastic looped through holes. Also called a coil bind.
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Split Fountain
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Technique of putting ink colors next to each other in the same ink fountain and printing them off the same plate. Split fountains keep edges of colors distinct, as compared to rainbow fountains that blend edges.
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Split Run
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(1) Different images, such as advertisements, printed in different editions of a publication. (2) Printing of a book that has some copies bound one way and other copies bound another way.
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Spoilage
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Paper that, due to mistakes or accidents, must be thrown away instead of delivered printed to the customer, as compared to waste.
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Spot Color
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One ink applied to portions of a sheet, as compared to flood or painted sheet.
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Spot Varnish
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Varnish used to highlight a specific part of the printed sheet.
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Spread
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(1) Two pages that face each other and are designed as one visual or production unit. (2) Technique of slightly enlarging the size of an image to accomplish a hairline trap with another image. Also called fatty.
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Stability
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The quality of paper to maintain its original size when it undergoes pressure and moisture changes.
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Stagger Cutting
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A process of cutting many sheets from the same parent sheet in which the smaller sheets have different grain directions; also called dutch or bastard cutting.
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Stamping
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Term for foil stamping.
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Standard Viewing Conditions
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Background of 60 percent neutral gray and light that measures 5000 degrees Kelvin the color of daylight on a bright day. Also called lighting standards.
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Star Target
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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. See also color bars.
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Static Neutralizer
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A device on a printing press that minimizes the amount of static buildup on paper as it passes through the press.
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Statistical Process Control
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Method used by printers to ensure quality and delivery times specified by customers. Abbreviated SPC.
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Step and Repeat
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A process of generating multiple exposures by taking an image and stepping it according to a predetermined layout.
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Stet
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A proof mark meaning let the original copy stand.
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Stochastic Screening
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Method that uses a pseudo-random dot size or frequency to create a half-toned image. Does not have the visual regularity in dot pattern found in traditional screening.
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Stock
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A term for unprinted paper or material to be printed.
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Stock Order
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Order for paper that a mill or merchant sends to a printer from inventory at a warehouse, as compared to a mill order.
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Stocking Paper
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Popular sizes, weights and colors of papers available for prompt delivery from a merchant's warehouse.
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String Score
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Score created by pressing a string against paper, as compared to scoring using a metal edge.
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Stumping (Blocking)
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In the book arena, hot die, foil or other means in creating an image on a case bound book.
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Substance Weight
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Alternate term for basis weight, usually referring to bond papers. Also called sub weight.
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Substrate
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Any surface or material on which printing is done.
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Subtractive Color
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Color produced by light reflected from a surface, as compared to additive. Subtractive color includes hues in color photos and colors created by inks on paper.
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Subtractive Primary Color
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Yellow, magenta and cyan. In the graphic arts, these are known as process colors because, along with black, they are the inks colors used in color-process printing.
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Supercalendered Paper
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Paper calendered using alternating chrome and fiber rollers to produce a smooth, thin sheet. Abbreviated SC paper.
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Surprint
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Taking an already printed matter and re-printing again on the same.
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Synthetic Papers
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Any petroleum-based waterproof papers with a high tensile strength.
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