Common UK Printing Terms Explained

  1. Here is a guide to some common terms used in the print industry.

  1. A series
    Standard international metric range of paper sizes

    Acetate
    Transparent sheet of plastic

    Acid-free paper
    Paper made without the use of acidic chemicals which reduce its shelf life

    Acrobat
    A software developed by Adobe Systems Inc. that allows documents to be read and printed across computer systems, using PDF (portable document format) files

    Additive Colour
    Colours achieved through the mixing of colours of light. When all of the colours of the spectrum are added together, they produce white light. Computer screens and TV’s use additive colour

    Against the grain
    Folding or cutting a sheet of paper at right angles to the grain of the paper

    Ampersand
    The ‘&’ symbol used for the word ‘and’

    Anti set-off spray
    A fine spray used when printing to stop the ink setting off when the paper is stacked

    Antique
    A printing paper with a rough textured finish

    Apple
    The computer system most commonly used in the graphic industry

    Archive
    Digital storage of previously jobs

    Art paper
    Gloss paper coated with china clay and then calendared to a gloss finish

    Artwork
    Copy or digital file used to produce the printed job

    Ascender
    Part of a letter that extends above the x-height

    Attachment
    File sent with an email message

    Author’s corrections
    Corrections made on a proof

    B series
    Alternative international range of paper sizes

    Binding
    The process of fastening printed sheets together in a secure way

    Bitmap
    Digital image file made up of individual pixels

    Black and white
    Mono or monochrome image in black only

    Bleed
    Part of the image that beyond the trim area of the print

    Blind embossing
    The effect created by a non printed raised area on the print

    Blocking
    Binding process that impresses an image or lettering onto a sheet

    Blow-up
    When a graphic or area is enlarged

    Bmp
    Bitmap graphics format

    Board
    General term for paper above 200gsm

    Body text
    The main text of the print

    Bold
    Thick version of a typeface

    Bond
    A range of uncoated papers often used for stationery

    BPIF
    British Printing Industries Federation trade body

    BPOP
    Bulk Packed on Pallets

    Bromide
    Photographic light-sensitive paper once used in print reproduction

    Burst binding
    A strong form of adhesive binding for books and brochures

    CAD/CAM
    Computer-aided design/computer aided manufacture

    Camera ready artwork/copy
    Conventional artwork ready for processing

    Caps
    Capital or upper case letters

    Carrier sheet
    A sheet of paper which shows the delivery address placed inside a film wrapped brochure

    Cartridge
    Uncoated paper with high opacity and good bulk often used for sckettching

    Case
    Refers to whether letters are capitalised (upper case) or not (lower case)

    Case-bound
    A book with a hard case outer cover

    Cast coated
    Paper with a high mirror like gloss

    China clay
    Material used for coating onto matt, silk and gloss papers

    Chlorine-free paper
    Paper whitened without the use of environmentally harmful chlorine chemicals

    Clipping path
    Outline around an illustration or image which determines the cut out area

    CMYK
    Abbreviation used for four colour process printing – cyan, magenta, yellow and black (K)

    Coated paper
    Paper coated with china clay

    Collate
    Place the printed sheets into the correct order for finishing

    Colour bars
    Coloured strips and circles added to four-colour process printed sheets showing ink densities and used for quality and consistency

    Colour separation
    The breaking down of full colour into the four process colours

    Colour splits
    The separation of the different colours on artwork

    Colour swatch
    A sample of a specified colour

    Colour transparency
    A full-colour photographic image on piece of film

    Computer-to-plate
    System which exposes litho plates by laser or thermal imaging directly from data supplied from a computer file

    Continuous stationery
    Stationery produced on a reel used on certain computer printers

    Continuous tone
    An uncountable range of colour variation or shades of grey such as occurs in a photography or painting, which cannot be directly reproduced

    Contract proof
    A colour proof that was used to mimic the expected result of a printed job

    Copier paper
    Paper used in photocopying machines usually 80gsm uncoated

    Copy date
    An agreed date to send copy to the printer

    CTP
    Computer To Plate (as above)

    Crease
    Score a line across a sheet of board to assist folding and reduce cracking

    Cracking
    When the fibres are broken when they are folded

    Creep
    The effect of the outer printed pages in a brochure or catalogue becoming wider than the inner pages, due to the thickness of paper across the fold

    Cromalin
    An old proofing system used in full colour litho printing

    Crop
    Removing an area of an image or illustration to achieve better fit

    Crop marks
    Marks printed on a sheet indicating where the sheet will be trimmed

    Cross fold
    A sheet that is folded in half and then again in the opposite direction

    Cut marks
    See crop marks

    Cut-out
    Illustration where the background has been removed

    Cyan
    The blue colour used in full colour printing

    Dandy roll
    Cylinder on paper making machine which impresses patterns and watermarks onto the surface

    Data integrity
    The degree to which date is trusted or assumed correct

    Densitometer
    An optical device used by printers to measure and control the density of ink printed on the paper

    Descender
    The part of a letter extending below the character baseline

    Desktop publishing (DTP)
    The production of fully made-up documents using a MAC or PC with page layout software

    Die cutting
    The process of cutting out shapes from the sheet of card

    Digital printing
    Printing directly from computer files to paper

    Digital proof
    A proof generated from a computer fie

    Digital workflow system
    Prepress system that manages the flow of made-up pages from creation through proofing to imposition on plate

    Dingbat
    A term for typographical characters such as arrows, starts, hearts and snowflakes

    Dithering
    A technique used in computer graphics to create the appearance of additional colours and shades of grey

    Dot gain
    The increase in the size of the dot in a halftone image when printed onto paper

    DPI
    Abbreviation of dots per inch, which indicates the resolution of images. The more dots per inch, the higher the resolution. Minimum required for printing is 300 dpi for all images

    Dots per inch (dpi)
    Measurement used to determine the resolution of a printer or scanner

    Double spread
    Print going across two facing pages

    Double-page spread
    When two facing pages in a book or periodical are shown

    Down-time
    The non-productive time when a printing machine is being maintained or serviced

    Download
    The transfer of files from one computer another

    Drawn-on-cover
    A binding style in which the cover is wrapped around the spine and glued directly

    Drilling
    The making of holes in a pile of paper for binding methods, such as loose leaf

    Drop-caps
    Drop Capital. A letter or letters at the beginning of the paragraph which extend below the depth of the rest of the text line

    Drum Scanner
    The original method of scanning transparencies using a cylindrical clear drum

    Drying time
    Time taken for the ink to dry on the printed sheet

    Dummy
    Mock-up of a book or other piece of printing to show how it will look before the main run

    Duotone
    A black-and-white image that is reproduced using two colours to add depth

    Duplex printing
    Printing on both sides of the paper

    ECF
    Elemental Chlorine Free pulp and paper during manufacture

    Edge gilding
    Gold-leaf edging on a book

    Em
    Standard unit of measurement (also called pica). One em = 4.22mm

    Em dash
    An elongated hyphen (the width of capital M in the font in use)

    Embossed finish
    Surface pattern pressed in paper

    Embossing
    See blocking

    En
    Half the width of an em

    En dash
    An elongated hyphen (the width of capital N in the font in use)

    Encapsulated postscript
    Line graphic created using software that produces Postscript code

    Endpaper
    Strong paper used for securing the body of a book to its case

    EPS
    See Encapsulated Postscript

    Estimator
    The person who calculates the cost of a printed job

    Expanded type
    Typeface with characters wider than the normal font

    Extended type
    See expanded type

    Extent
    The length of book expressed in pages

    Face
    A style of type ie typeface

    Facing pages
    Pages that face each other in an open book or magazine. Also called double page spread

    Fade-out
    See ghosting

    FAQ
    Frequently asked questions

    Feathering
    In printing, ink spread

    Feed edge
    The edge of the sheet of paper that is presented to the lays of a press that take it into the machine. Also called gripper edge, leading edge or pitch edge

    Fill
    The pattern and or colour that is inside an object produced in a illustration programme

    Fine papers
    High quality printing and writing papers

    Finish
    The type or surface that a particular grade of paper has

    Finishing
    Bindery process taking place after a job is printed. Ie folding, stitching, cutting inserting etc

    Finished size
    Size of printed item after production is complete. Also called trimmed size

    Flat size
    Size of printed item after printing and trimming but before finishing

    Firewall
    A digital security barrier to prevent external access to a computer system by outside sources

    First proof
    The first proof used for checking

    First revise
    The corrected first proof made after errors have been noted

    Flat
    When a printed image lacks contrast or colour density

    Flatbed
    A press where the printing surface is flat rather than curved as on a litho press

    Flatbed scanner
    An image scanner with a flat platen or bed

    Flexography
    Relief printing process using flexible bendable plates

    Flush cover
    A bound book or booklet having the cover trimmed to the same size as the text pages

    Flyleaf
    The plain sheet of paper in a book between the cover and the text pages

    Foils
    A sheet with a surface that resembles metal

    Foil emboss
    To stamp and emboss an image onto a sheet of paper, also called a heat stamp

    Folding boxboard
    High quality board used for making cartons which has good scoring and folding characteristics

    Foldout
    An extra page that is attached to another page, often used for a map or chart. Also called throw out, gatefold and pullout

    Folio
    The page number at the head or foot of a page of text

    Font
    A complete family set of the same typeface and point sizes

    Font size
    The actual size that the type is produced at. In the UK and US font size is usually given in points

    Footer
    The common text that appears at the bottom of each page

    Format
    Trimmed page size or physical specification for a page or a book

    Four colour process
    See CMYK

    Four colour separation
    See colour separation

    FTP
    File Transfer Protocol. An old system for transferring digital files between 2 fixed sites securely

    Full colour
    See CMYK

    Full point
    Full stop

    Galley proof
    An old system of proofing text that is not made up into page finished pages

    Gatefold
    A page in a magazine or book which folds out twice

    Gather
    The process of collecting individual sheets of a printed job into the correct sequence for binding

    Ghosting
    A problem in litho printing where an image can reappear faintly somewhere else on the sheet

    GIF
    The filename extension for files in Graphics Interchange Format

    Gigabyte (Gb)
    One thousand million bytes

    Gloss art
    A paper with a highly calendared/glossy surface

    Graduated fill
    The gradual change from one colour to another. eg From a dark tone to a light tone across an image

    Grain direction</strong
    The direction that the fibres that make up a sheet of paper lay

    Grammage
    How the weight of paper is measured – grams per square metre

    Gravure printing
    A method of printing in which recesses on a cylinder are filled with ink and then the surplus is removed with a blade. Used for long run magazines and catalogues

    Grey board
    Particular kind of bulky board used as backing board for pads etc

    Grip
    The area on the lead edge of the sheet of paper that the litho print machine grabs to feed the sheet of paper into the press

    gsm or g/m2
    Grams per square metre. How the weight of paper and board is measured

    Guillotine
    The machine that cuts the sheets of paper

    Gummed paper
    A paper coated on one side with adhesive

    Gutter
    The margin used when binding a book

  2. Hairline
    Very fine line or stroke in a letter

    Halftone
    Illustration created by dots of varying sizes

    Hard copy
    Physical written copy, typed or printed as distinct from a digital file

    Hard-bound
    See Case-bound

    Hardcover
    See case-bound

    Header
    The running headline appearing at the top of each page or letterhead

    Hickey
    Spot on a printed sheet caused by a spec of dust or dirt that causes an imperfection in the printed image ink. This is particularly noticeable in solids, large type, halftones, tints etc

    High resolution
    An image produced in high detail

    Highlights
    The lightest tonal areas in a graphic

    Hot-melt
    The adhesive used in perfect binding to glue the pages into the spine

    Icon
    A small picture that is used to represent something

    Images
    There are two main types of images – Vector Graphics and Bit-Mapped Graphics. Vector images use a composite of lines and nodes while Bit-Mapped Graphics use a composition of a pattern of dots (sometimes called Raster Graphics). Programs that enable you to create and manipulate Vector Graphics are often called drawing programmes (e.g. Adobe Illustrator or Macromedia Freehand). Programmes used for creating and manipulating Bit-Mapped images or photographs are sometimes referred to as image editing or paint programmes (e.g. Adobe Photoshop or MS Paint)

    Image area
    The printed area of a sheet

    Imposition
    How the pages are arranged on the printed sheet so that when a publication is folded and bound, the pages run in the correct order

    Imprint
    The publishers and/or printers identifying tag printed in a book or other work

    Indent
    Where the type is set further in from the left hand margin of a page than the rest of the surrounding text

    India paper
    Very thin opaque rag paper often used for high-quality bibles

    Indigo
    A digital printing process

    Ink set-off
    Unintentional transfer of wet ink from one printed sheet to another in the paper stack

    Insert
    A loose sheet of printed material that will be inserted into another piece of printed material such as a magazine or brochure

    Interleaves
    Blank sheets of paper placed between wet printed sheets to prevent a ink set-off when cutting

    Iris proofs
    An old system of full colour digital proofing generated from a Postscript file

    ISO
    International Standards Organisation – the international accepted working standards in paper sizes

    Italic
    Letters in the font family that slope forward

    Ivory board
    The traditional high grade smooth white board used for business cards

    Jacket
    The dust cover on a book

    Java
    An object-oriented programming language designed for programming the internet

    Joint photographic experts group (JPEG)
    A standard for coding and compression of colour images

    JPEG
    See above

    Justification
    Where the text on a page is aligned with either the left or right margin or with both

    Kerning
    The adjusting of the space between two adjacent letters to create a better appearance

    Kerning pairs
    Pairs of letters which invariably need spacing adjustments made to them visually neater

    Keyline
    A thin line drawn on artwork to show where illustrations or other material should be placed

    Kraft
    A strong brown paper used in packaging and printing

    Laid paper
    A high quality paper that has lines parallel to each other imprinted into the paper

    Lamination
    A thin plastic film that is glued to a sheet of paper or board using heat and pressure that adds to the protection and/or appearance of the finished job

    Landscape
    The orientation of a page or image or picture so that its width is greater than its height

    Leaf
    As single sheet, comprising two pages ie printed both sides

    Letterpress
    A printing process using raised lead metal letters to transfer the ink onto the paper

    Letter spacing
    Adding or reducing the space between individual characters

    Lick-coated paper
    Paper with a very light coating

    Lightfast ink
    Ink that fades more slowly than normal ink on prolonged exposure to strong light

    Limp binding
    Paperback binding

    Literal
    A mistake introduced when keying in copy, often only affecting one or two characters

    Lithography
    Print process in which ink is applied selectively to the plate by chemically treating the image areas to accept ink and the non-image areas to accept water. Shortened to litho

    Litho plate
    The printing plate used in offset litho

    Loose leaf
    Binding which uses steel rings passing through drilled holes in the paper to hold the sheets together

    Low resolution
    Often shortened to low-res. An image that is produced in low quality

    Lower case
    Small letters as distinct from capitals. Abbreviated as lc

    Mac
    Abbreviation for the Apple Macintosh computer widely used in the print and publishing industries

    Machine binding
    Binding printed sheets by machine rather than manually

    Machine coated
    Paper that is coated during the paper-making process

    Machine minder
    The person who supervises the running of a printing machine

    Machine proof
    A proof made by printing from the actual printing plate. Also known as a wet proof

    Magenta
    One of the colours used in 4 colour printing

    Make-ready
    The setting up of a printing machine ready to run a specific job

    Manila
    A tough brown paper made from hemp and often used for envelopes

    Matchprint
    An old system of dry proofing, similar to a Cromalin

    Mechanical binding
    Binding system using metal or plastic coils. See also spiral binding

    Megabyte (mb)
    One million computer bytes

    Metallic inks
    Inks that contain metallic particles such as gold or silver take give a shiny metallic printed effect

    Micrometer
    Instrument used to measure the thickness of paper

    Micron
    Units used to measure the thickness of board

    Mid tones
    The tonal ranges between highlights and shadows

    Mini web
    Small web offset machine typically producing 16pp A4 colour sections (8pp A4 to view)

    Misregister
    One colour or more on the printed sheet do not align up

    Moire
    Undesirable chequered pattern on the printed sheet caused by a conflict of screen angles of the four colour process dots

    Monochrome
    Literally means one colour. Often black on white

    Monotone
    An illustration in one colour

    Mutton
    An em quad

    NCR
    The proprietary name given to a paper which has been impregnated with dye on one or both sides of the sheet that transfers an image on to the sheet below when written or typed on

    Neckline
    White space under a headline

    Oblique
    Where text or sometimes a graphic is slanted

    OCR
    Optical Character Recognition. The interpretation of typewritten characters by a machine which scans the text and uses software to store it to a file

    Octavo
    The Latin word meaning “in eighth” or “for the eighth time”, abbreviated as 8vo. The technical term describing the format of a book, referring to the size of pages produced after folding a flat sheet of paper containing multiple printed pages to form the individual sections of a book

    Offprint
    Part of a book or journal printed separately. Eg and article from a journal

    Offset
    The printing process that uses a rubber blanket wrapped around a cylinder to transfer the image onto paper as in offset litho

    Offset lithography
    See Offset

    Offset paper
    A term for uncoated book paper

    On the fly
    Refers to any process which occurs as output is being performed

    One sided art
    Paper coated on one side only

    Onionskin
    A lightweight, often translucent paper in book and brochure production

    Opacity
    The term given to how see through a piece of paper is

    OPP lamination
    Oriented Polypropylene Lamination. The standard lamination film used in print

    Optical character recognition
    See OCR

    Origination
    All the processes used in the production of the original material such as typesetting, up to the plate making, to get the job ready to print

    Orphan
    The first line of a new paragraph, or a sub head, that appears dangling at the foot of a page that is considered undesirable

    Out of register
    When one or more of the colours on the printed sheet are out of alignment with the others

    Outline
    An area comprising of only an outline with no solid area

    Overprinting
    Additional printing over a previously printed sheet

    Overrun
    Copies printed in excess of the specified printing number requested

    Overs
    See spoilage

    Page
    One side of a sheet of paper

    Page proof
    Proof of a page before printing

    Pagemaker
    One of the original DTP programmes – now rarely used

    Pagination
    The numbering of pages

    Pamphlet
    A small booklet comprising of only a few pages

    Pantone
    Proprietary name of a widely used colour matching system

    Pantone matching system (PMS)
    See Pantone

    Parallel Folding
    Folding a sheet with all the folds parallel to each other

    Parenthesis
    A round bracket

    Pass
    When a job goes through a machine

    Pass for press
    Customer authorisation of the final form of a job for printing

    PDF
    PDF is a way of saving a document that protects the document formatting so that it will look exactly the same when viewed on any computer or when printed.

    PDF
    See Portable Document Format

    Perfect binding
    Adhesive binding method widely used on paperback books and magazines

    Perfecting
    Printing both sides of a sheet in one pass

    Perforating
    Punching a series of tiny holes in paper to facilitate tearing

    Photoshop
    An raster image manipulation programme from Adobe

    Pic
    Abbreviation for picture

    Pica
    A typographical unit of measurement

    Picking
    The lifting of parts of the paper surface during the printing process

    Pigment
    The constituent of a printing ink that gives it its colour

    Pitch
    The horizontal spacing of printer characters

    Pixel
    An abbreviation for picture elements

    Pkzip
    A widely used file compression and archiving software on PC’s

    Plastic proof
    An old system of proofing such as Cromalin or Matchprint etc

    Plate
    The the piece of aluminium used to transfer the image from the printing blanket to the paper in offset printing

    Platesetter
    The imaging unit on a ctp device to etch the image into the plate

    Plate Sunk
    Area of paper compressed

    PMS
    PMS stands for Pantone Matching System used by the printing industry to print spot colours. It is not always possible to match PMS colours using CMYK.

    Point sizes
    The unit of measurement for characters in the typeset copy. This is measured by the height of the capital letters. 1 point equals 1/72 of an inch

    Pop-ups
    A form of portable graphic display system

    Portable Document Format (pdf)
    The format used by Adobe Acrobat Files

    Portrait
    The origination of a picture, screen or page, such that its height is greater than its width

    Positive
    An image on film or paper in which the dark and light values are the same as the original as distinct from a negative

    Poster paper
    One-sided glazed paper with rough underside suitable for pasting

    Postscript
    Adobe Systems proprietary page description language

    Postscript Level 2
    An improved version of Postscript

    Postscript Level 3
    An even further improved version

    pp
    Pages

    Pre-flight
    A process of checking a digital file for errors before sending for proofing or printing.

    Pre press
    All the functions required by the printer before he is able to print

    Pre-printed
    Part of a job printed before the main run through the press

    Press
    Printing machine

    Press proof/press pass
    Proof taken from the press after make-ready but before the main run

    Process colours
    The 4 colours CMYK used in printing and the colour separation process

    Progressive proofs or progs
    An historical proofing system made from each plate in a colour set showing each colour alone and in combination with the others as a guide to colour matching at the printing stage

    Proof
    A trial printed sheet or copy made before the production run for the purpose of checking

    Proof reader’s marks
    Symbols used by a proof reader in marking corrections on proofs

    Proofreading
    Checking typeset copy for accuracy

    PUR
    A strong system of gluing books and magazines using Polyurethane glue

    QuarkXPress
    Once the leading DTP or page layout programme in the graphics arts industry

    Quarto
    A page one quarter of the traditional broadsheet

    Quire
    One 20th of a ream (25 sheets)

    Quotes
    Inverted commas

  3. Ragged
    Text layout that is not justified

    Ream
    500 sheets of paper

    Ream-wrapped
    Paper sheets wrapped in lots of 500

    Recto
    A right hand page

    Reel
    The master roll of paper as it comes off the paper making machine before it is cut down to sheets

    Register marks
    Marks in the same relative position on the printing plates that enable the correct alignment of colours to be achieved

    Registration
    The alignment of the different colours used in printing

    Relative Humidity (RH)
    Amount of water vapour present in the atmosphere expressed as a percentage of saturation

    Relief
    Printing method using a raised image eg letterpress

    Reprint
    The subsequent printing of the first edition of a publication

    Repro
    The processes used before a job can be printed – prepress, scanning and make-up

    Resolution
    Measurement of image quality stated in lines per inch (lpi), dots per inch (dpi) or pixels per inch

    Retouching
    Correcting a photographic print or transparency before reproduction

    Reversed Out
    Where the the type printed in white and the background is another colour

    Revise
    A revised proof for subsequent checking

    RGB
    Red, Green, Blue – the colour system used in tv’s and computer monitors

    Rich Text Format
    A basic format for word processing

    Right-angle folding
    Folding a sheet with one or more folds at right-angles to each other

    Ring binding
    Binding by means of holes in paper which locate on metal rings in a binder

    River
    Undesirable formation of word spaces into a vertical river of white in the text

    Roman type
    Upright letters as distinct from italic

    Rough
    Sketch or layout

    Royal
    The traditional standard size of paper 480 x 636 mm

    Rule
    A line

    Rules
    Printing lines measured in points

    Runnability
    Ability of paper to be printed without problems

    Running head
    A title repeated at the to of each page. Also known as a running headline

    s/s
    Abbreviation for ‘same size’ in reproduction specifications

    Saddle stitching
    Method used to bind books with wire staples

    Sans serif type
    Type in which there are no serifs

    Scalable font
    A font that can be used at any size and any resolution

    Scamp
    Rough layout

    Scatter proofs
    Proofs of illustrations or photos arranged in random order on the sheet for checking

    Scoring
    To impress into a board with a rule to make folding easier and reduce cracking

    Screen angles
    Each of the colour dots are printed at a different angles to avoid a moire pattern

    Screen clash
    A moire pattern is caused by the screen angles being incorrect or when a previously printed image is re screened

    Screen ruling
    The number of lines or dots per inch on a screen

    Screen tint
    When a colour is printed as a shade rather than full strength the dots are percentage (10-90%)

    Script
    A typeface that simulates handwriting

    Scum or scumming
    The build up of ink on the non image area of an offset plate

    Section
    A folded sheet which is assembled with others to make up a book. Eg an A2 will provide a section of 8 x A4 pages when folded twice

    Section sewing
    A conventional method of binding where a thread is used to sew the section together  as in most paperback or hardback books

    Security paper
    Paper incorporating features which make counterfeiting difficult

    Self copy paper
    Carbonless copy paper

    Self cover
    Where the paper used for the cover and the text are the same weight

    Self adhesive paper
    Gummed pressure sensitive paper

    Self mailer
    Printed piece mailed without envelope

    Serif
    The terminal stroke at the end of a line making up part of a character

    Set-off
    The transfer of wet ink onto the sheet

    Sew
    To fasten the sections of a book with thread

    Shade
    The lightness or darkness of a colour

    Shadows
    The dark areas in a photograph or halftone print represented by a 70-100% dot

    Sheet
    The full size piece of paper used for printing before folding or cutting

    Sheet fed
    Where individual cut sheets are used for printing as distinct from paper on a continuous reel

    Sheet work
    Each side of the sheet is printed with a different image. As distinct from work and turn

    Show through
    Lack of opacity in a sheet of paper to the point where the printed image on one side of a page is excessively visible from the other side

    Shrink wrap
    Plastic film wrapping used to package printed items

    Side lay
    The guide on a sheet fed press which positions the sheet sideways to ensure each sheet is in the same position before it starts to travel through the press

    Side stabbing
    A form of stitching where the stitch goes through the side of the document rather than in the fold

    Signature
    Synonym for section

    Silk screen printing
    A printing method which employs a fine mesh screen to support a stencil through which ink is squeezed

    Slip case
    A cardboard case for a book

    Slur
    Image distortion caused by drag on the printing machine

    Small capitals
    Capitals the same size as the x-height of the normal lower case

    Smoothness
    Evenness of paper surface

    Soft cover
    A paper cover as distinct from hard case board

    Soft proof
    A representation on screen of what will be printed in the form of a PDF, rather than a proof on paper

    Solid
    Printed area where the colour is printed at 100%

    Solvent
    Ink dissolver

    Spec
    Specification

    Spine
    The back edge of a book

    Spiral binding
    Binding using a continuous spiral of wire or plastic threaded through punched holes in the back margin

    Spoilage
    Waste incurred during the printing or binding processes

    Spot colour
    A colour that is usually specified in a document as a particular pantone or PMS number

    Spot varnish
    Varnish applied to selected parts of a printed sheet

    Spread
    Pair of facing pages

    Stet
    Proof-readers instructions meaning ignore the marked correction ie leave it as it was

    Stitch
    The binding method using a stitch made with a thread or staple

    Strip gumming
    Applying water soluble adhesive to paper in strips

    Subscript
    A small character printed below the baseline

    Substrate
    Surface being printed on

    Subtractive Colour
    Colours achieved through the mixing of colour pigments such as ink or paint. When all of the colours of the spectrum are added together, they produce black. Printing uses subtractive colour

    Superior
    Small character set above the line

    Tab
    To determine the points where the text is to align vertically in typesetting

    TCF
    Totally Chlorine Free, relating to pulp and paper manufacture

    Text
    The body type in a book as distinct from headings and display type

    Text pages
    The body type in a book as distinct from the type on the cover

    Text paper
    A printing method where the body paper of a magazine or book as distinct from the cover stock

    Thermographic printing
    A traditional printing method where the ink is coated with a special powder and heated immediately after printing which causes the ink to raise

    Thread sewing
    The conventional binding method that sews the individual printed sections together to form a book

    Throw out
    A page which folds out of a book or a magazine to a size beyond the book trim

    Thumbnail sketch
    Small rough drawing

    Tick marks
    Alternative term for crop marks or cut marks used for finishing the printed item

    TIFF (Tag Image File Format)
    A standard format for the storage of bit map graphics and scanned images

    Tint
    A solid colour reduced in shade by screening, specified as a percentage of the solid colour

    Tip in
    To fix a single leaf inside a printed section using glue

    Tracing paper
    A transparent paper

    Transparent Inks
    Inks such as process inks which permit other colours to show through when over-printed and so produce subsequent mixed colours

    Trap, trapping
    The overlap between two colours used in printing to ensure that there is no white gap appearing between them as a result of paper movement or poor registration

    Trim
    To cut the edges off the printed sheet to square up or reduce in size

    Trim marks
    Alternative term for crop marks or cut marks

    Trim to bleed
    Trim so that printed solids reach the edge of the trimmed sheet

    Tritone
    The use of three (usually Pantone) colours in combination to produce a particular effect in printing

    Type family
    Roman, italic, bold and all other versions of one typeface

    Typographer
    The name given to the person who used to specialise in the design and layout of printed type matter particularly in the publishing industry

    Typographic
    Abbreviated to typos. See literals

    Uncoated paper
    Paper with no coating

    Unjustified
    Typesetting having a ragged right edge

    Unsewn binding
    See perfect binding

    Unzip
    To decompress a file that has been zipped

    Upper case
    Capital letters

    UV varnish
    A high gloss varnish that can be used as a spot or overall that is hardened using UltraViolet light

    Varnish
    A thin, transparent coating applied to printed work for gloss finish and protection

    Vector graphics
    Another name for an object orientated graphic. The term arises because graphics are defined in terms of vectors, or geometric formulae, rather than bitmaps or pixels

    Verso
    Left hand page with even number

    Vignette
    A halftone in the background that gradually fades out

    Virgin fibre
    Fibre used for the first time to make paper (ie not recycled)

    Wash-up
    The cleaning of the individual printing units of a press prior to a change of ink or when the machine is shut down

    Wet proof
    See machine proof

    Widow
    A single line of a paragraph, printed at the top of a page

    Wire stitching
    See saddle stitching

    Wire Binding or Wire-o-Binding
    Binding method comprising a continuous double loop of wire running through punched squares in the margin of a book

    Word break
    Division of a word at a line ending

    Work and Tumble
    A printing technique where the reverse side of the sheet is printed by turning it over and using the same plate

    Work and Turn
    Printing the first side of a sheet, turning the stack across the short axis and then printing the reverse side of the sheet using the same plate

    Workflow
    The control of documents moving around an organisation

    Wove
    A paper produced using a plain, woven dandy roll and therefore without laid lines, as distinct from laid paper

    x-height
    The height of the lower case letter ‘x’ in a particular typeface or font

    Xerography
    Electrostatic copying process in which toner adhere to charged paper to produce an image

    Zapf Dingbats
    A typeface designed by Hermann Zapf, which includes common dingbats

    Zip
    A file format widely used for data compression