Document Design, How-to Guides, Printing
Print and Graphic Design Terms Glossary
Commercial printing combines technical prepress specs, color science, and paper finishing standards. Whether you are setting up files for variable data mailers, sourcing stock weights, or reviewing color proofs, this guide covers essential terminology across offset, digital, and finishing workflows.
A | B | C | D |
E | F | G | H | I |
J | | K | L| M | | N | O | P | Q |
R | S | T | U |
V | W | X | Y | Z
A
Accordion Fold
A document binding method with alternating parallel folds where each panel opens in the opposite direction, resembling an accordion.
Achromatic
Colors that lack saturation or hue, including neutral grays, pure white, and pure black.
Additive Color (RGB)
Color generated by emitted light. Combining red, green, and blue light at maximum intensity produces white. Used for digital displays, not ink on paper.
Against the Grain
Folding or feeding paper perpendicular to the natural alignment of its wood pulp fibers. This causes cracking unless the stock is scored first.
Aqueous Coating
A fast-drying, water-based protective seal applied immediately after ink during printing. Resists smudges and fingerprints in gloss, satin, or matte finishes.
Automated Mail Inserter
High-speed industrial equipment that folds, collates, and inserts documents into envelopes for high-volume direct mail.
B
Banker’s Flap Envelope
An envelope design with a deep, curved V-flap. Commonly used by financial institutions for secure handling and automated insertion.
Binding
Fastening individual sheets into a finished document. Common methods include saddle-stitching, perfect binding, comb, spiral, and case binding.
Bitmap (Raster Graphics)
An image formed by a grid of individual pixels. Raster files are resolution-dependent; enlarging them reduces image clarity and causes pixelation.
Bleed
Artwork printed past the intended trim line. Commercial standards usually require an extra 1/8 inch (0.125″) on all sides to prevent white borders after cutting.
Blind Emboss
Pressing an uninked, unfoiled metal die into paper stock to raise an image or lettering in subtle three-dimensional relief.
Blistering
A print defect caused by trapped moisture rapidly boiling inside coated paper during the high-heat drying stage of heatset web printing.
Bond Paper
A durable, lightweight writing paper grade (typically 16–28 lb basis weight) used for stationery, forms, and business letterhead.
Brightness
The percentage of blue light reflected by a sheet of paper. Higher ratings (typically 80–100) yield higher contrast between ink and sheet.
C
Caliper
The thickness of a single sheet of paper, measured with a micrometer and expressed in thousandths of an inch (points or mils).
Chroma
The purity, intensity, or saturation of a color relative to gray.
CMYK (Process Color)
The subtractive color model used in four-color process printing: Cyan, Magenta, Yellow, and Key (Black).
Color Balance
Adjusting color channels to ensure neutral grays reproduce accurately without unwanted warm or cool color casts.
Color Gamut
The total range of colors a specific device (monitor, press, or scanner) can reproduce. RGB monitors have a wider gamut than standard CMYK presses.
Color Separations
The prepress conversion of full-color digital artwork into separate single-color plates or screens (typically CMYK plus spot colors).
Crop Marks
Thin printed lines outside the margin of a sheet indicating exactly where the paper should be trimmed.
D
Deckle Edge
The feathered, untrimmed edge naturally found on handmade paper, frequently replicated artificially for wedding stationery and fine art prints.
Density
The measure of light absorbed by an ink layer on paper, measured with a reflection densitometer to maintain color consistency across a press run.
Die-Cutting
Cutting custom, non-rectangular shapes, perforations, or creases into paper using a steel rule die.
Digital Printing
Plateless printing using toners or liquid inks. Ideal for short runs, rapid turnarounds, and variable data printing (VDP).
Digital Proof
An onscreen PDF or calibrated inkjet sample used to verify layout, text accuracy, and bleed before going to plate.
Dot Gain (Tonal Value Increase)
The physical and optical spreading of ink dots as they hit paper fibers, making printed artwork look darker than the digital file.
DPI (Dots Per Inch)
The number of physical ink dots a printer puts on paper per linear inch. Commercial printing typically requires artwork prepared at 300 PPI/DPI.
G
Grain Direction
The orientation of fibers in a sheet of paper, determined during manufacturing. Paper folds cleanest parallel to the grain.
Gutter
The blank space between columns of text, or the inner margin where two facing pages meet at the binding.
L
Laminate
A thin transparent plastic sheet or coating that is applied to the thicker paper stock. Usually is applied to covers, postcards, and other thicker documents. It protects liquids and accents existing colors while providing a glossy finish.
Layout
A sample of the finished work showing the positions and placements of text and visual elements on a printed document.
Letter Fold
Two folds create three panels that allow a sheet of letterhead to fit a business envelope. Also called barrel-fold and wrap-around-fold.
O
Offset Lithography
High-volume commercial printing where an inked image is transferred from a metal plate to a rubber blanket, then onto paper. Cost-effective at high unit counts.
P
Pantone Matching System (PMS)
A standardized proprietary spot color library. Ensures exact color matching across different print vendors and substrates.
R
Registration Marks
Crosshair targets printed outside the trim area. Used by press operators to align CMYK plates perfectly with each other.
S
Score
Compressing an indentation along a planned fold line to preserve paper fibers and prevent cracking, particularly on heavy cardstock.
Spot Color
A custom-mixed premixed solid ink (like Pantone) used instead of, or in addition to, standard CMYK inks.
T
Trim Size
The final dimensions of a printed piece after excess bleed and margins have been cut away.
V
Variable Data Printing (VDP)
Digital printing that dynamically alters text, barcodes, and images on each printed sheet using an external data source.
Vector Graphics
Resolution-independent digital graphics built from mathematical coordinates, lines, and curves. Unlike raster files, they scale infinitely with zero quality loss.