> ## Documentation Index
> Fetch the complete documentation index at: https://docs.printery.app/llms.txt
> Use this file to discover all available pages before exploring further.

# Print Design Glossary

> Complete dictionary of printing and design terms

## A

<AccordionGroup>
  <Accordion title="Additive Color" icon="plus">
    Color model where colors are created by adding light (RGB). Opposite of subtractive color.
  </Accordion>

  <Accordion title="Artwork" icon="palette">
    The design files, images, and text that will be printed. Also called "mechanicals" or "print-ready files."
  </Accordion>
</AccordionGroup>

## B

<AccordionGroup>
  <Accordion title="Bleed" icon="expand">
    Extra area beyond the trim edge where design elements extend. Typically 3mm (0.125"). Prevents white edges if cutting is slightly off.

    See [Understanding Bleed](/basics/bleed)
  </Accordion>

  <Accordion title="Binding" icon="book">
    Method of holding pages together. Types include:

    * **Saddle-stitch**: Stapled in center fold
    * **Perfect binding**: Glued spine
    * **Spiral**: Wire or plastic coil
    * **Case binding**: Hardcover
  </Accordion>

  <Accordion title="Bit Depth" icon="hashtag">
    Number of bits used to represent color information. Higher = more colors.

    * 8-bit: 256 colors per channel
    * 16-bit: 65,536 colors per channel
  </Accordion>
</AccordionGroup>

## C

<AccordionGroup>
  <Accordion title="CMYK" icon="droplet">
    **Cyan, Magenta, Yellow, Black (Key)** - The four ink colors used in printing. Subtractive color model.

    See [RGB vs CMYK](/color/rgb-vs-cmyk)
  </Accordion>

  <Accordion title="Coated Paper" icon="file">
    Paper with smooth, glossy coating. Better for vibrant colors and detailed images. Opposite: uncoated paper.
  </Accordion>

  <Accordion title="Color Gamut" icon="palette">
    Range of colors a device or system can reproduce. RGB has wider gamut than CMYK.
  </Accordion>

  <Accordion title="Color Profile" icon="id-card">
    See **ICC Profile**
  </Accordion>

  <Accordion title="Color Separation" icon="layer-group">
    Process of separating full-color artwork into CMYK components for printing.
  </Accordion>

  <Accordion title="Crop Marks" icon="scissors">
    Lines printed outside the design to guide cutting. Also called **trim marks** or **cut marks**.

    See [Crop Marks Guide](/basics/crop-marks)
  </Accordion>
</AccordionGroup>

## D

<AccordionGroup>
  <Accordion title="Die Cut" icon="cut">
    Custom-shaped cut using a steel die (like a cookie cutter). Used for unique shapes beyond rectangles.
  </Accordion>

  <Accordion title="Digital Printing" icon="print">
    Printing directly from digital files without plates. Good for short runs and variable data.
  </Accordion>

  <Accordion title="DPI" icon="image">
    **Dots Per Inch** - Measurement of print resolution. Standard is 300 DPI for quality printing.

    See [DPI & Resolution](/basics/dpi-resolution)
  </Accordion>

  <Accordion title="Duotone" icon="images">
    Image printed with two colors (usually black + one other color).
  </Accordion>
</AccordionGroup>

## E

<AccordionGroup>
  <Accordion title="Effective DPI" icon="magnifying-glass">
    Actual resolution of an image based on its size in the design. Formula: Image pixels ÷ Physical size in inches.
  </Accordion>

  <Accordion title="Embossing" icon="square-up-right">
    Raised impression created by pressing paper between two dies. Opposite: debossing (recessed).
  </Accordion>

  <Accordion title="EPS" icon="file-vector">
    **Encapsulated PostScript** - Vector graphics file format. Good for logos and illustrations.
  </Accordion>
</AccordionGroup>

## F

<AccordionGroup>
  <Accordion title="Finish" icon="sparkles">
    Surface treatment applied after printing:

    * **Gloss**: Shiny, reflective
    * **Matte**: Non-reflective, smooth
    * **Satin**: Between gloss and matte
    * **UV**: Ultra-glossy coating
  </Accordion>

  <Accordion title="FOGRA" icon="building">
    European standards organization for print. FOGRA39 is a common ICC profile standard.
  </Accordion>

  <Accordion title="Foil Stamping" icon="crown">
    Metallic or pigmented foil applied using heat and pressure. Creates shiny, decorative effect.
  </Accordion>
</AccordionGroup>

## G

<AccordionGroup>
  <Accordion title="Gamut" icon="circle">
    See **Color Gamut**
  </Accordion>

  <Accordion title="GCR" icon="shuffle">
    **Gray Component Replacement** - Method of replacing CMY gray with K (black) to reduce ink usage and improve stability.
  </Accordion>

  <Accordion title="Grayscale" icon="square-half-stroke">
    Image using only shades of gray (black to white). Usually printed with black ink only.
  </Accordion>

  <Accordion title="GSM" icon="weight-scale">
    **Grams per Square Meter** - Measurement of paper weight. Higher GSM = thicker, heavier paper.

    * 80gsm: Standard copy paper
    * 350gsm: Thick card stock
  </Accordion>

  <Accordion title="Gutter" icon="book-open">
    Inner margin where pages are bound together. Requires extra margin space to avoid content loss in binding.
  </Accordion>
</AccordionGroup>

## H

<AccordionGroup>
  <Accordion title="Halftone" icon="grid">
    Pattern of dots used to simulate continuous tones in printing. Smaller, closer dots = darker area.
  </Accordion>

  <Accordion title="Hex Color" icon="hashtag">
    6-character code representing RGB color. Example: #FF0000 = red. Format: #RRGGBB.
  </Accordion>
</AccordionGroup>

## I

<AccordionGroup>
  <Accordion title="ICC Profile" icon="id-badge">
    **International Color Consortium** profile - Standard file defining color characteristics of a device or printing condition.

    See [ICC Profiles Guide](/color/icc-profiles)
  </Accordion>

  <Accordion title="Imposition" icon="table-cells">
    Arrangement of pages on printing sheets for efficient printing and correct folding sequence.
  </Accordion>

  <Accordion title="Ink Coverage" icon="fill-drip">
    Total amount of ink applied. Measured as percentage. Most printers limit to 280-320% total (TAC).
  </Accordion>
</AccordionGroup>

## K

<AccordionGroup>
  <Accordion title="K (Black)" icon="circle">
    Black ink in CMYK. "K" = Key plate. Used for text and details for registration accuracy.
  </Accordion>

  <Accordion title="Kerning" icon="text">
    Adjustment of space between individual letter pairs for better visual appearance.
  </Accordion>

  <Accordion title="Knockout" icon="eraser">
    When top color removes (knocks out) underlying colors instead of overprinting.
  </Accordion>
</AccordionGroup>

## L

<AccordionGroup>
  <Accordion title="Leading" icon="arrows-up-down">
    Vertical space between lines of text. Measured baseline to baseline.
  </Accordion>

  <Accordion title="Live Area" icon="shield">
    See **Safety Zone**
  </Accordion>

  <Accordion title="LPI" icon="wave-square">
    **Lines Per Inch** - Halftone screen frequency. Higher LPI = finer detail, smoother appearance.
  </Accordion>
</AccordionGroup>

## M

<AccordionGroup>
  <Accordion title="Matte Finish" icon="square">
    Non-glossy, flat surface finish. Reduces glare, softer appearance than gloss.
  </Accordion>

  <Accordion title="Metallic Ink" icon="gem">
    Ink containing metallic particles for shimmer effect. Often used with foil stamping.
  </Accordion>

  <Accordion title="Moire" icon="fingerprint">
    Unwanted pattern caused by incorrect screen angles. Appears as ripples or waves in printed images.
  </Accordion>
</AccordionGroup>

## O

<AccordionGroup>
  <Accordion title="Offset Printing" icon="print">
    Traditional commercial printing using plates. Image transferred from plate to rubber blanket to paper. Good for large runs.
  </Accordion>

  <Accordion title="Opacity" icon="eye-slash">
    How much light passes through paper. Higher opacity = less show-through from back side.
  </Accordion>

  <Accordion title="Out of Gamut" icon="triangle-exclamation">
    Colors that cannot be reproduced in a specific color space. RGB colors outside CMYK gamut will shift.
  </Accordion>

  <Accordion title="Overprint" icon="layer-group">
    When one ink prints on top of another instead of knocking out. Used for certain color effects and registration.

    See [Overprint Settings](/color/overprint)
  </Accordion>
</AccordionGroup>

## P

<AccordionGroup>
  <Accordion title="Pantone" icon="stamp">
    Standardized color matching system using pre-mixed spot color inks. Ensures consistent brand colors.

    See [Spot Colors Guide](/color/spot-colors)
  </Accordion>

  <Accordion title="PDF/X" icon="file-pdf">
    ISO standard for print-ready PDFs. Ensures files contain necessary information and follow printing guidelines.
  </Accordion>

  <Accordion title="Perfect Binding" icon="book">
    Binding method where pages are glued together at spine. Used for paperback books and thick catalogs.
  </Accordion>

  <Accordion title="PMS" icon="stamp">
    **Pantone Matching System** - See **Pantone**
  </Accordion>

  <Accordion title="PPI" icon="desktop">
    **Pixels Per Inch** - Resolution measurement for digital images. Often used interchangeably with DPI.
  </Accordion>

  <Accordion title="Preflight" icon="plane-departure">
    Final check of files before printing to catch errors. Automated in professional workflows.
  </Accordion>

  <Accordion title="Press Check" icon="eye">
    On-site inspection during printing run to verify colors and quality. Done for critical jobs.
  </Accordion>

  <Accordion title="Process Color" icon="palette">
    CMYK printing. Opposite: spot color (premixed inks).
  </Accordion>

  <Accordion title="Proof" icon="check">
    Test print to verify colors, layout, and quality before full production run.

    * **Digital proof**: On-screen preview
    * **Physical proof**: Actual printed sample
  </Accordion>
</AccordionGroup>

## R

<AccordionGroup>
  <Accordion title="Raster" icon="image">
    Image made of pixels (bitmap). Opposite: vector. Examples: JPG, PNG, TIFF.
  </Accordion>

  <Accordion title="Registration" icon="crosshairs">
    Precise alignment of color plates in printing. Registration marks help achieve this.
  </Accordion>

  <Accordion title="Registration Marks" icon="plus">
    Crosshair symbols (+) used to align multiple color plates during printing.
  </Accordion>

  <Accordion title="Rendering Intent" icon="wand-magic-sparkles">
    Method for handling out-of-gamut colors during conversion:

    * **Relative Colorimetric**: Preserves relationships (most common)
    * **Perceptual**: Compresses gamut smoothly
    * **Absolute**: Exact match including paper white
    * **Saturation**: Maximum vibrancy
  </Accordion>

  <Accordion title="Resolution" icon="magnifying-glass-plus">
    Amount of detail in an image. Measured in DPI or PPI. Higher = more detail.
  </Accordion>

  <Accordion title="RGB" icon="tv">
    **Red, Green, Blue** - Additive color model used by screens and displays.

    See [RGB vs CMYK](/color/rgb-vs-cmyk)
  </Accordion>

  <Accordion title="Rich Black" icon="fill">
    Black created using all four CMYK inks (e.g., C40 M30 Y30 K100). Deeper than pure black (K100).

    See [Black Handling](/color/black-handling)
  </Accordion>
</AccordionGroup>

## S

<AccordionGroup>
  <Accordion title="Saddle Stitch" icon="stapler">
    Binding by folding sheets in half and stapling through the fold. Used for magazines and thin booklets. Page count must be multiple of 4.
  </Accordion>

  <Accordion title="Safety Zone" icon="shield-halved">
    Area inside trim line where important content must stay. Typically 3-5mm from edge. Also called **safe area** or **live area**.

    See [Safety Zone Guide](/basics/safety-zone)
  </Accordion>

  <Accordion title="Score" icon="wave-square">
    Crease or fold line pressed into paper. Helps paper fold cleanly without cracking.
  </Accordion>

  <Accordion title="Screen Printing" icon="layer-group">
    Printing method pushing ink through mesh screen. Used for t-shirts, posters, specialty items.
  </Accordion>

  <Accordion title="Slug" icon="rectangle-wide">
    Area outside bleed containing job information (printer notes, colors used, etc.). Trimmed off final product.
  </Accordion>

  <Accordion title="Spot Color" icon="droplet">
    Premixed ink color printed as separate plate. Pantone is most common spot color system.

    See [Spot Colors](/color/spot-colors)
  </Accordion>

  <Accordion title="Spot UV" icon="sun">
    Glossy UV coating applied to specific areas only. Creates contrast between coated and uncoated areas.
  </Accordion>

  <Accordion title="Spread" icon="book-open">
    Two facing pages viewed together, as in an open book or magazine.
  </Accordion>

  <Accordion title="sRGB" icon="desktop">
    Standard RGB color space for web and general use. Smaller gamut than Adobe RGB.
  </Accordion>

  <Accordion title="Stock" icon="scroll">
    Paper or substrate being printed on. "What stock are you using?" = What kind of paper?
  </Accordion>

  <Accordion title="Subtractive Color" icon="minus">
    Color model where colors are created by subtracting (absorbing) wavelengths of light. CMYK is subtractive.
  </Accordion>
</AccordionGroup>

## T

<AccordionGroup>
  <Accordion title="TAC" icon="calculator">
    **Total Area Coverage** - Sum of all four CMYK percentages. Most printers limit to 300% maximum.
  </Accordion>

  <Accordion title="TIFF" icon="file-image">
    **Tagged Image File Format** - High-quality raster image format. Supports layers and CMYK. Large file size.
  </Accordion>

  <Accordion title="Trim" icon="scissors">
    Final cut line where paper is trimmed to finished size.
  </Accordion>

  <Accordion title="Trim Line" icon="square-dashed">
    Line indicating where paper will be cut. Same as **trim edge** or **cut line**.
  </Accordion>

  <Accordion title="Trim Marks" icon="crop">
    See **Crop Marks**
  </Accordion>

  <Accordion title="Trim Size" icon="ruler">
    Final dimensions of printed piece after trimming. Does not include bleed.
  </Accordion>
</AccordionGroup>

## U

<AccordionGroup>
  <Accordion title="UCR" icon="eraser">
    **Under Color Removal** - Removing CMY inks under black areas. More traditional method than GCR.
  </Accordion>

  <Accordion title="Uncoated Paper" icon="file">
    Paper without coating. More absorbent, softer appearance. Colors less vibrant than coated.
  </Accordion>

  <Accordion title="UV Coating" icon="sun">
    High-gloss protective coating cured with ultraviolet light. More durable and shinier than standard varnish.
  </Accordion>
</AccordionGroup>

## V

<AccordionGroup>
  <Accordion title="Varnish" icon="droplet">
    Clear coating applied to protect and enhance printed piece. Types: gloss, matte, satin, spot.
  </Accordion>

  <Accordion title="Vector" icon="bezier-curve">
    Image made of mathematical paths, not pixels. Scalable without quality loss. Examples: SVG, PDF, AI, EPS.
  </Accordion>
</AccordionGroup>

## W

<AccordionGroup>
  <Accordion title="White Space" icon="square">
    Unprinted areas in design. Important for readability and visual balance. Also called **negative space**.
  </Accordion>
</AccordionGroup>

## Quick Reference: Common Measurements

| Term              | Value           | Usage                      |
| ----------------- | --------------- | -------------------------- |
| **Bleed**         | 3mm (0.125")    | Standard for most projects |
| **Safety Zone**   | 3-5mm from edge | Keep content inside        |
| **DPI**           | 300             | Print quality standard     |
| **TAC**           | Max 300%        | Total ink coverage limit   |
| **Text Size Min** | 6-8pt           | Minimum readable size      |
| **GSM Card**      | 300-350         | Business card weight       |

## Need More Detail?

<CardGroup cols={2}>
  <Card title="Print Basics" icon="book" href="/basics/overview">
    Learn core printing concepts
  </Card>

  <Card title="Color Management" icon="palette" href="/color/overview">
    Master color terminology
  </Card>

  <Card title="FAQ" icon="question" href="/troubleshooting/faq">
    Common questions answered
  </Card>

  <Card title="Tutorials" icon="graduation-cap" href="/tutorials/design-to-print">
    Learn by doing
  </Card>
</CardGroup>

***

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