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Printing Terms


Accordion fold
Bindery term, two or more parallel folds which open like an accordion.
Against the Grain
Paper will tear and fold more easily with the grain and with greater
dificulty against the grain. Refers to the direction of fibers in a sheet
of paper generated during paper formation.
Any change made by the customer after copy or artwork has been
given to the printer. The change could be in copy, specifcations or
both. Also called AA (author alteration).
Aqueous Coating
Aqueous coating is a fast-drying, water-based, protective coating
which is applied while the paper stock is on press to achieve a nish
that exceeds the quality of a varnish. This water-based nish dries
quickly and is resistant to smudges and ngerprints
All original copy, including type, photos and illustrations, intended
for printing
Basis Weight
The weight, in pounds, of a ream (500 sheets) of paper cut to the basic
size. In countries using ISO paper sizes, the weight, in grams, of one
square meter of paper
Usually in the book arena, but not exclusively, the joining of leafs or
signatures together with either wire, glue or other means
The department within a printing company responsible for collating,
folding and trimming and binding various printing projects.
Printing that extends to the edge of a sheet or page after trimming.
Full bleed is printing from one edge of the paper to the other without a border.
Blind Embossing
Image debossed, embossed or stamped, but not printed with ink or foil.
Boiler Plate
Blocks of repetitive type used and copied over and over again.
Bond paper
Category of paper commonly used for writing, printing and photocopying
Book Paper
Category of paper suitable for books, magazines, catalogs, advertising
and general printing needs. Book paper is divided into uncoated paper,
coated paper and text paper.
Broken Carton
Carton of paper from which some of the sheets have been sold.
C1S and C2S
Abbreviations for coated one side and coated two sides.
To make the surface of paper smooth by pressing it between rollers
during manufacturing.
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).
Camera-ready Art
Term used in the commercial printing industry meaning that a document
is, from a technical standpoint, ready to “go to press”, or be printed.
Carbonless Paper
Paper coated with chemicals that enable transfer of images from one
sheet to another with pressure from writing or typing.
Cast-coated Paper
High gloss, coated paper made by pressing the paper against a polished,
hot, metal drum while the coating is still wet.
Abbreviation for cyan, magenta, yellow and black inks used in four process
printing. The CMYK model works by partially or entirely masking colors on a
lighter, usually white, background. The ink reduces the light that would
otherwise be re ected. Such a model is called subtractive because inks
“subtract” brightness from white.
Coated Paper
Paper with a coating of clay and other substances that improves re ectivity
and ink holdout. Mills produce coated paper in four major categories cast,
gloss, dull and matte.
Color Control Bar
A test strip comprising a series of grayscale and color patches printed onto
a substrate as a means of ensuring proper and uniform color balance during printing.
Color Correct
To adjust the relationship among the CMYK process colors to achieve desirable colors.
Color Gamut
The entire range of hues possible to reproduce using a speci c device,
such as a computer screen, or four-color process printing.
Color Model
A color model is an abstract mathematical model describing the way colors
can be represented as numbers, typically as three or four values or color components.
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.
Color Sequence
Order in which inks are laid down on the paper when printed
Color Shift
Change in image color resulting from changes in register, ink densities or dot
gain during four-color process printing.
Commercial Printer
Printer producing a wide range of products such as announcements, brochures,
posters, booklets, stationery, business forms, books and magazines.
Continuous-tone Copy
Refers to images that have a virtually unlimited range of color or shades of grays.
Photographs and television images are examples of continuous-tone images.
In contrast, computer hardware and software is digital, which means that they
can represent only a limited number of colors and gray levels. All photographs
and those illustrations having a range of shades not made up of dots, as compared
to line copy or halftones.
The degree of tones in an image ranging from highlight to shadow.
Business that makes paper into products such as boxes, bags, envelopes and displays.
Thick paper that protects a publication. Parts of covers are often described as
follows: Cover 1=outside front; Cover 2=inside front; Cover 3=inside back,
Cover 4=outside back.
Extent to which ink covers the surface of a substrate. Ink coverage is usually
expressed as light, medium or heavy.
When the bulk of the paper in a saddle stitched booklet causes the inner
pages to extend or creep further out than the outer pages when folded.
Crop Marks
Crossed lines placed at the corners of an image or a page to indicate where
the paper is to be trimmed.
To dry inks, varnishes or other coatings after printing to ensure good adhesion
and prevent seto .
Cut Sizes
Paper sizes used with o ce machines and small presses.
One of the four process colors. Also known as process blue.
Instrument used to measure density. Reflection densitometers measure light
reflected from paper and other surfaces; transmission densitometers measure
light transmitted through lm and other materials.
Desktop Publishing
Technique of using a personal 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, lm or printing plate. Abbreviated DTP.
Device for cutting, scoring, stamping, embossing and debossing.
Die Cut
To cut irregular shapes in paper or paperboard using a die.
Digital Proofing
A digital proof is a color prepress proo ng method where a job is printed from
the digital le to a PDF which will give a good approximation of what the nal
printed piece will look like. The digital proof is less expensive than other prepress
proofs. Digital proofs can often be produced on the actual paper stock of the job
adding another element of accuracy.
Dot Gain
Phenomenon of halftone dots printing larger on paper than they are on lms or
plates, reducing detail and lowering contrast.
DPI is a measurement of printer resolution that de nes how many dots of ink
are placed on the page when the image is printed.
See Dots Per Inch
To drill a hole in a printed matter.
Dull Finish
Flat (not glossy) nish on coated paper; slightly smoother than matte.
Simulation of the nal product. Also called mockup.
To press an image into paper so it lies above the surface.
Encapsulated PostScript file
Computer file containing both images and PostScript commands.
Abbreviated EPS file.
Printing method using a plate, also called a die, with an image cut into its surface.
See Encapsulated Postscript File
Price that states what a job will probably cost. Also called bid, quotation.
The individual performing or creating the “estimate.”
Edge of a bound publication opposite the spine. Also, an abbreviation for
typeface referring to a family of a general style.
Felt Finish
Soft woven pattern in text paper.
Film Laminate
Thin sheet of plastic bonded to a printed product for protection or increased
Fine Papers
Papers made specifcally for writing or commercial printing, as compared to
coarse papers and industrial papers.
Fine Screen
Screen with ruling of 150 lines per inch (80 lines per centimeter) or more.
(1) Surface characteristics of paper.
(2) General term for trimming, folding,
binding and all other post press operations.
Finished Size
Size of printed product after production is completed, as compared to at size.
Also called trimmed or folded size.
Fixed Costs
Costs that remain the same regardless of how many pieces are printed.
Flat Size
Size of product after printing and trimming, but before folding.
The reverse side of an image
Foil Emboss
To foil stamp and emboss an image.
Foil Stamp
Method of printing that releases foil from its backing when stamped with the
heated die.
A bindery machine dedicated to folding printed materials.
Fold Marks
Markings which indicate where a fold is to occur.
A page in a book or magazine designed to be opened out for use and then folded away.
Folio (page number)
The actual page number in a publication.
Each side of a signature.
Size, style, shape, layout or organization of a layout or printed product.
In graphic design and printing FPO equates to for position only or for placement
only. Blank placeholders or temporary low-resolution illustrations are watermarked
or stamped with the acronym FPO to indicate where the nal version of an image
is to be placed in the nal le. The purpose of watermarking “FPO” prominently
over the image is to prevent the low-res image from being mistakenly kept in the nal output.
Four-color Process Printing
To reproduce full-color photographic images, typical printing presses use 4 colors
of ink. The four inks are placed on the paper in layers of dots that combine to create
the illusion of many more colors. CMYK refers to the 4 ink colors used by the printing press.
Full-range Halftone
Halftone ranging from 0 percent coverage in its highlights to 100 percent coverage in its shadows.
To reproduce two or more di erent printed products (or different client jobs)
simultaneously on one sheet of paper during one press run.
Gate Fold
A sheet that folds where both sides fold toward the gutter in overlapping layers.
(1) Phenomenon of a faint image appearing on a printed sheet where it was not
intended to appear. Chemical ghosting refers to the transfer of the faint image from the
front of one sheet to the back of another sheet. Mechanical ghosting refers to the faint
image appearing as a repeat of an image on the same side of the sheet. (2) Phenomenon
of printed image appearing too light because of ink starvation.
Consider the light re ecting on various objects in the printing industry (e.g., paper,
ink, laminates, UV coating, varnish).
A term that refers to the quality category of a paper stock determined by the method
of manufacturing and by the contents of the paper, which provide the various surface
characteristics. Paper grade also refers to the speci c type of paper, such as coated,
uncoated, bond, or index. Digital paper grades may include laser, ink-jet, or multipurpose papers.
Grain Direction
Predominant direction in which bers in paper become aligned during manufacturing.
Grain Long Paper
Paper whose bers run parallel to the long dimension of the sheet. Also called long
grain paper.
Grain Short Paper
Paper whose bers run parallel to the short dimension of the sheet. Also called short
grain paper and wide web paper.
A metric measure of paper weight, grammage is based on the same square meter sheet
of paper, regardless of paper grade. Grammage is expressed in grams per square meter or g/m2 or GSM.
Graphic Design
Arrangement of type and visual elements along with speci cations for paper, ink colors
and printing processes that, when combined, convey a visual message.
Gray Balance
Printed cyan, magenta and yellow halftone dots that accurately, reproduce a neutral gray image.
Gray Levels
Number of distinct gray tones that can be reproduced by a computer.
Gray Scale
Strip of gray values ranging from white to black. Used by process camera and scanner
operators to calibrate exposure times for lm and plates. Also called step wedge.
Gripper Edge
Edge of a press sheet held by grippers on a sheetfed press, thus going rst through the press.
The unit of measurement for paper weight (grams per square meter).
The inside margins or blank space between two facing pages is the gutter. The gutter
space is that extra space allowance used to accommodate the binding in books and
magazines. The amount of gutter needed varies depending on the binding method.
Hairline (Rule)
In typography, a very thin rule line typically less than one-half point wide. On some
output devices, the hairline rule is as thin as the smallest printer spot the device can image.
The reprographic technique that simulates continuous tone imagery through the use
of dots, varying either in size, in shape or in spacing.
Halo Effect
Faint shadow sometimes surrounding halftone dots printed.
At the top of a page, the margin.
Imposition with heads (tops) of pages facing tails (bottoms) of other pages.
High- Fidelity Color
Color reproduced using six, eight or twelve separations, as compared to four-color process.
House Stock
Paper kept in stock by a printer and suitable for a variety of printing jobs.
Postal information place on a printed product
Image Area
The actual area on the press sheet that can be printed on,
Laser output device using photosensitive paper or lm used to image plates
One of the fundamental steps in the prepress printing process. It consists in the
arrangement of the printed product’s pages on the printer’s sheet, in order to obtain
faster printing, simplify binding and reduce paper waste. Correct imposition minimizes
printing time by maximizing the number of pages per impression, reducing cost of
press time and materials. To achieve this, the printed sheet must be lled as fully as possible.
Referring to an ink color, one impression equals one press sheet passing once through
a printing unit.
Impression Cylinder
Cylinder, on a press, that pushes paper against the plate or blanket, thus forming the image.
To print new copy on a previously printed sheet, such as imprinting an employee’s name
on business cards.
Inkjet Printing
Method of printing by spraying droplets of ink through computer-controlled nozzles.
Often used to add mailing addresses to preprinted materials.
Within a publication, an additional item positioned into the publication loose (not bound in).
Job Number
A number assigned to a speci c printing project in a printing company for use in
tracking and record keeping.
Job Ticket
Form used by printers to communicate job specs and the materials and tasks required.
Abbreviation for black in four-color process printing. The ‘K’ in CMYK.
Kiss Cut
To die cut a shape in the top layer, but not the backing layer, of self-adhesive paper
so the top layer can be peeled o .
Kraft Paper
Strong paper used for wrapping and to make grocery bags and large envelopes.
A thin transparent plastic sheet applied to paper stock providing protection against
liquid and heavy use.
Page orientation is the way in which a rectangular page is oriented for normal viewing.
The two most common types of orientation are portrait and landscape. The speci c
word de nition comes from the fact that a close-up portrait of a person’s face is more
tting for a canvas or photo where the height of the display area is greater than the
width, and is more common for the pages of books. Landscape originally described
artistic outdoor scenes where a wide view area is needed, but the upper part of the
painting would be mostly sky and so is omitted.
Laser Bond
Bond paper made especially smooth and dry to run well through laser printers.
In typography refers to the distance between the baselines of successive lines of type.
One sheet of paper in a publication. Each side of a leaf is one page.
Letter fold
Two folds creating three panels that allow a sheet of letterhead to t a business envelope.
Letter Paper
In North America, 8 1/2 x 11 sheets. In Europe, A4 sheets.
Method of printing from raised surfaces, either metal type or plates whose surfaces
have been etched away from image areas.
Line Copy
Any high-contrast image, including type, as compared to continuous-tone copy.
Also called line art and line work.
Linen Finish
Embossed nish on text paper that simulates the pattern of linen cloth.
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.
Live Area
Area on a mechanical within which images will print. Also called safe area.
Lens built into a small stand. Used to inspect copy, lm, proofs, plates and printing
One of the four process colors.
All activities required to prepare a press or other machine to function for a speci c
printing or bindery job, as compared to production run. Paper used in the makeready
process at any stage in production. Makeready paper is part of waste or spoilage.
Non printed space around the edge of the printed material.
Instructions written usually on a “dummy” or proof.
To block out part of an image, therefore isolating the remaining part. Also called knock out.
Match Print
A form of a four-color-process proo ng system.
Matte Finish
Flat (not glossy) nish on photographic paper or coated printing paper.
Camera-ready assembly of type, graphic and other copy complete with instructions
to the printer.
Mechanical Separation
Color breaks made on the mechanical using a separate overlay for each color to be printed.
Metallic Ink
Ink containing powdered metal or pigments that simulate metal.
In a photograph or illustration, tones created by dots between 30 percent and
70 percent of coverage, as compared to highlights and shadows.
Mock Up
A reproduction of the original printed matter and possibly containing instructions
or direction.
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.
Multicolor Printing
Printing in more than one ink color (but not four-color process).
M Weight
Weight of 1,000 sheets of paper in any speci c size.
Signatures assembled inside one another in the proper sequence for binding,
as compared to gathered.
Neutral Gray
Gray with no hue or cast.
News Print
Paper used in printing newspapers. Considered low quality and “a short life use.”
Nonimpact Printing
Printing using lasers, ions, ink jets or heat to transfer images to paper.
Novelty Printing
Printing on products such as coasters, pencils, balloons, golf balls and ashtrays,
known as advertising specialties or premiums.
Offset Printing
Printing technique that transfers ink from a plate to a blanket to paper instead
of directly from plate to paper.
Characteristic of paper or other substrate that prevents printing on one side
from showing through the other side.
Not transparent.
To print one image over a previously printed image, such as printing type over a screen tint.
Over Run
Additional printed matter beyond order. Overage policy varies in the printing industry.
One side of a leaf in a publication.
Page Count
Total number of pages that a publication has.
Page Proof
Proof of type and graphics as they will look on the nished page complete with
elements such as headings, rules and folios.
The numbering of pages in a book.
One page of a brochure, such as one panel of a rack brochure.
Parallel Fold
The fold lines in paper with parallel folds all run in the same direction, parallel to
each other. Parallel folds are commonly used for all kinds of brochures (such as tri-fold),
stationery inserted into business envelopes, and other materials.
Parent Sheet
Any sheet larger than 11 x 17 or A3 from which smaller sheets are cut.
Proofreader mark meaning printer error and showing a mistake by a typesetter,
prepress service or printer as compared to an error by the customer.
Perfect Bind
To bind sheets that have been ground at the spine and are held to the cover by glue.
Perfecting Press
Press capable of printing both sides of the paper during a single pass. Also called duplex
press and perfector.
Perf Marks
Markings indicating where the perforation is to occur.
Taking place on a press or a binder machine, creating a line of small dotted wholes
for the purpose of tearing-o a part of a printed matter (usually straight lines, vertical or horizontal).
A unit of measure in the printing industry. A pica is approximately 0.166 in. There are
12 points to a pica.
Phenomenon of ink pulling bits of coating or ber away from the surface of paper as it
travels through the press, thus leaving unprinted spots in the image area.
Unwanted small holes (defects) in printed areas caused of a variety of reasons.
Pin Register
Technique of registering separations and printing plates by using small holes, all of equal
diameter, at the edges and used to perfectly align separations or plates
Short for picture element, a dot made by a computer, scanner or other digital device. A
Piece of paper, metal, plastic or rubber carrying an image to be reproduced using a printing press.
A machine that makes plates used on an o set press for reproducing illustrations or printed mater.
Pleasing Color
Color that the customer considers satisfactory even though it may not precisely match
original samples, scenes or objects.
A popular color matching system used by the printing industry to print spot colors.
Most applications that support color printing allow you to specify colors by indicating the
Pantone name or number. This assures that you get the right color when the le is printed,
even though the color may not look right when displayed on your monitor.
(1) Regarding paper, a unit of thickness equating 1/1000 inch.
(2) Regarding type, a unit of
measure equaling 1/12 pica and .013875 inch (.351mm).
An art design in which the height is greater than the width. (Opposite of Landscape.)
Post Bind
To bind using a screw and post inserted through a hole in a pile of loose sheets.
Camera work, color separations, stripping, platemaking and other prepress functions
performed by the printer, separator or a service bureau prior to printing.
Prepress Proof
Color proof made using ink jet, toner, dyes or electronic PDF, as compared to a press proof
printed using ink.
To print portions of sheets that will be used for later imprinting.
Press Check
Event at which makeready sheets from the press are examined before authorizing full
production to begin. Can be quite costly given the setup of the press for just a few sheets.
Press Proof
Proof made on press using the plates, ink and paper speci ed for the job.
Press Time
Amount of time that one printing job spends on press, including time required for makeready.
Pressure-sensitive paper
Paper material with self sticking adhesive covered by a backing sheet
Price Break
Quantity at which unit cost of paper or printing drops.
Printer Spreads
Mechanicals made so they are imposed for printing, as compared to reader spreads.
Any process that transfers to paper or another substrate an image from an original
such as a lm negative or positive, electronic memory, stencil, die or plate.
Printing Plate
Printing processes such as o set lithography use printing plates to transfer an image to
paper or other substrates. The plates may be made of metal, plastic, rubber, paper, and
other materials. The image is put on the printing plates using photomechanical,
photochemical, or laser engraving processes.
Process Color (Inks)
The colors used for four-color process printing: yellow, magenta, cyan and black.
Production Run
Press run intended to manufacture products as speci ed, as compared to makeready.
Test sheet made to reveal errors or aws, predict results on press and record how a
printing job is intended to appear when nished.
Proofreader Marks
Standard symbols and abbreviations used to mark up manuscripts and proofs.
Also called correction marks.
Price o ered by a printer to produce a speci c job.
Rag Paper
Stationery or other forms of stock having a strong percentage content of “cotton rags.”
Raster Image Processor
Device that translates page description commands into bitmapped information for an
output device such as a laser printer or imagesetter.
Reader Spread
Mechanicals made in two page spreads as readers would see the pages, as compared
to printer spread.
500 sheets of paper.
Recycled Paper
New paper made entirely or in part from old paper.
Reflective Copy
Products, such as fabrics, illustrations and photographic prints, viewed by light reflected
from them, as compared to transparent copy. Also called reflex copy.
When printing an image that has more than one color, it is necessary to print each color
separately, and to ensure that each color overlaps the others precisely. If this is not done,
the nished image will look fuzzy, blurred or “out of register” (see image to right). To help
line the colors up correctly, a system of registration is necessary.
Register Marks
Small shapes, or patterns (most commonly a circle or oval with a cross through it) placed
in non-image areas of negatives, positives, color separations, or plates to ensure correct
register—or alignment—of successive colors and/or images.
General term for xerography, diazo and other methods of copying used by designers,
engineers, architects or for general o ce use.
Sharpness of an image on lm, paper, computer screen, disc, tape or other medium.
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.
Abbreviation for red, green, blue, the additive color primaries.
Line used as a graphic element to separate or organize copy.
Saddle Stitch
To bind by stapling sheets together where they fold at the spine.
Satin Finish
Alternate term for dull nish on coated paper.
To identify the percent by which photographs or art should be enlarged or reduced to
achieve the correct size for printing.
To compress paper along a straight line so it folds more easily and accurately.
Also called crease.
Screen Angles
Angles at which screens intersect with the horizontal line of the press sheet.
Screen Density
Refers to the percentage of ink coverage that a screen tint allows to print. Also called
screen percentage.
Screen Printing
A printing technique that uses a woven mesh to support an ink-blocking stencil to receive
a desired image. The attached stencil forms open areas of mesh that transfer ink or which
can be pressed through the mesh as a sharp-edged image onto a substrate. A ll blade or
squeegee is moved across the screen stencil forcing ink into the mesh openings during
the squeegee stroke. Basically, it is the process of using a stencil to apply ink onto a substrate, whether it be t-shirts, posters, stickers, vinyl, wood, or other material.
Screen Tint
A screen pattern that consists of dots that are all the same size and create an even tone.
Self Cover
Self Cover means that the paper used for the cover of a book or other bound document
is the same as the paper used for the interior pages.
Self Mailer
A printed item independent of an envelope. A printed item capable of travel in the mail
without being enclosed in an envelope.
Color separation is the process by which original artwork is separated into individual color
components for printing. The components are cyan, magenta, yellow and black, known as
CMYK. By combining these colors, a wide spectrum of colors can be produced on the
printed page. In this four color printing process, each color is applied to a printing plate.
When the colors are combined on paper the human eye combines the colors to see the nal image.
Set-o is the term given to the unwanted transfer of ink from one printed sheet to another.
The problem can occur with most types of printing, and is avoided by the use of
anti-set-o spray powder.
Hue made darker by the addition of black, as compared to tint.
Darkest areas of a photograph or illustration, as compared to midtones and high-lights.
Sheetfed Press
Press that prints sheets of paper, as compared to a web press.
Allowance, made during paste-up or stripping, to compensate for creep. Creep is the
problem; shingling is the solution.
Side stitch
To bind by stapling through sheets along, one edge, as compared to saddle stitch.
Printed sheet folded at least once, possibly many times, to become part of a book,
magazine or other publication.
A pallet used for a pile of cut sheets
Slip Sheets
A blank sheet of paper slipped between newly printed sheets to prevent o setting.
Any area of the sheet receiving 100 percent ink coverage, as compared to a screen tint.
Soy-based Inks
Inks using vegetable oils instead of petroleum products as pigment vehicles,
thus are environmentally friendly.
Specially Printer
Printer whose equipment, supplies, work ow and marketing is targeted to a particular
category of products.
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.
Back or binding edge of a publication
Spiral Bind
To bind using a spiral of continuous wire or plastic looped through holes. Also called coil bind.
Paper that, due to mistakes or accidents, must be thrown away instead of delivered
printed to the customer, as compared to waste.
Spot Color or Varnish
One ink or varnish applied to portions of a sheet, as compared to ood or painted sheet.
Two pages that face each other and are designed as one visual or production unit.
Term for foil stamping
Step and Repeat
A backdrop display that has one or more sponsor logos repeated in a step or diagonal
alternating pattern. Used during media press conferences and special events.
A proof mark meaning let the original copy stand
Stocking Paper
Popular sizes, weights and colors of papers available for prompt delivery from a merchant’s
To assemble images on lm for platemaking. Stripping involves correcting aws in lm,
assembling pieces of lm into ats and ensuring that lm and ats register correctly.
Also called lm assembly and image assembly.
Substance Weight
Alternate term for basis weight, usually referring to bond papers. Also called sub weight.
Any surface or material on which printing is done.
Subtractive Color
Color produced by light re ected from a surface, as compared to additive color. Subtractive
color includes hues in color photos and colors created by inks on paper.
Subtractive Primary Color
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.
Supercalendered Paper
In paper manufacturing calendaring is the process of smoothing the surface of the paper
by pressing it between cylinders or rollers. An additional set of calendars or supercalendars
used after the initial papermaking process produce an even smoother, thinner paper called
supercalendered paper.
Specifications for Web Offset Publications, (SWOP), is an organization and the name of a set
of speci cations that it produces, with the aim of improving the consistency and quality of
professionally printed material in the United States. The SWOP specifiation covers many
areas related to print production.
As a paper size, an 11” x 17” sheet
Grade of dense, strong paper used for products such as badges and le folders.
Tagged Image File Format
Computer le format used to store images from scanners and video devices. Abbreviated TIFF.
A standardized layout.
Text Paper
Designation for printing papers with textured surfaces such as laid or linen. Some mills
also use ‘text’ to refer to any paper they consider top-of-the-line, whether or not its
surface has a texture.
Method of printing using colorless resin powder that takes on the color of underlying ink.
Also called raised printing.
Reduced-size versions of pictures used to help in recognizing and organizing them
Screening or adding white to a solid color for results of lightening that speci c color.
Total Area Coverage
The amount of ink layered on a page (colors printed on top of each other as in 4-color
process printing) is the Total Ink Coverage(TIC) or Total Area Coverage (TAC) for a document
Trade Shop
Printer or bindery working primarily for other graphic arts professionals, not for the general public.
To print one ink over another or to print a coating, such as varnish, over an ink. The rst
liquid traps the second liquid. See also Dry Traps and Wet Traps.
Trim Size
The size of the printed material in its nished stage (e.g., the nished trim size is 5 1\2 x 8 1\2).
Uncoated Paper
Paper that has not been coated with clay. Also called o set paper.
Unsharp Masking
Technique of adjusting dot size to make a halftone or separation appear sharper (in better focus) than the original photo or the first proof.
Term to indicate multiple copies of one image printed in one impression on a single sheet.
“Two up” or “three up” means printing the identical piece twice or three times on each sheet.
UV Coating
Liquid applied to a printed sheet, then bonded and cured with ultraviolet light.
Liquid applied as a coating for protection and appearance.
Vellum Finish
A very slightly rough or tooth texture intended to mimic natural vellum.
Virgin Paper
Paper made exclusively of pulp from trees or cotton, as compared to recycled paper.
Abbreviation for volatile organic compounds, petroleum substances used as the vehicles
for many printing inks.
Wash Up
To clean ink and fountain solutions from rollers, fountains, screens, and other press components.
Unusable paper or paper damage during normal makeready, printing or binding operations,
as compared to spoilage.
A visible embedded overlay on a digital photo consisting of text, a logo, or a copyright notice. The purpose of a watermark is to identify the work and discourage its unauthorized use.
Web Press
Press that prints from rolls of paper, usually cutting it into sheets after printing. Also called
reel-fed press.
With the Grain
Parallel to the grain direction of the paper being used, as compared to against the grain.
See also Grain Direction.
Woodfree Paper
Made with chemical pulp only. Paper usually classified as calendered or supercalendered.

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