the difference between a “trap” and a “bleed?”
Here are several commonly used printing terms and what they mean.
They will be useful if you are writing and designing internal or
external newsletters, brochures, or other promotional materials.
In binding, a term used for two or more parallel folds that open
like an accordion.
Term used when describing either paste-up elements or typesetting
elements that are not “square.” In typesetting, frequently
used to call for a letter to be raised or lowered in order to match
The weight in pounds of a ream (500 sheets) of paper cut to a given
standard size for that grade; e.g., 500 sheets of 25 x 38, 80-pound
coated book paper weight 80 pounds.
What happens to your printed document after it's printed —
trim, fold (type of fold), die cut, score/perforation, collate,
number, drill (number of holes and hole diameters), stitch, and
An extra amount of printed image (usually a photograph) that extends
beyond the trim edge of the sheet or page.
In halftones (photographs), the effect achieved when the background
is not allowed to print. Very effective for highlighting a given
area or object in an otherwise cluttered photo.
Large bold dot used in front of listed items or to add emphasis
to particular parts of a text. A bullet is often used in place of
A document that is ready for printing.
Original copy with no typographic errors or flaws.
Paper having a surface coating that produces a smooth finish. Surfaces
vary from eggshell to matte to glossy.
In photography, the process of separating color originals into the
primary printing color components in negative or positive form.
Term used to describe typefaces. Demibold is bolder than “regular”
(also called Roman), but not as hefty as a true boldface type.
Font made up of small graphic characters instead of letters.
DOTS PER INCH
A measure of the resolution of a screen image or printed page.
A two-color halftone reproduction from a one-color photograph.
Impressing an image in relief to get a raised surface.
The reproduction of continuous-tone images, through a screening
process, which converts the image into dots of various sizes and
equal spacing between centers.
Four-color process uses CMYK colors —
Cyan, Magenta, Yellow
and blacK, the four primary colors.
Spot colors refers to Pantone Matching System (PMS) colors, which
are several ink colors mixed by hand or machine to produce a single
color used as a second or third color in a document. Varnishes are
also considered colors. Colors reproduced on computer screens are
Red, Green and Blue (RGB).
What the printer gives you to do a final check before the document
is printed. The most common are color keys (four colors) and a blueline
(looks like a blueprint).
Fitting of two or more printing images in exact alignment with each
To impress or indent a mark in the paper with a string or rule to
make folding easier.
Various even tone areas (strengths) of a solid color. Also known
as screen tints or screens.
In pre-press, it refers to how much overprinting colors overlap
to eliminate white lines between colors in printing. In printing,
it's the ability to print a wet ink film over previously printed
ink. Dry trapping is printing wet ink over dry ink. Wet trapping
is printing wet ink over previously printed wet ink.