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Computer Graphics for Print

Color, raster, vector, and the craft of getting pixels onto paper.

17 posts · Engineering

  1. 1

    How Color Works: Light & Human Perception

    Before you can manage color, calibrate a monitor, or argue with a client about why their logo "looks wrong," you have to understand a surprising truth: color…
  2. 2

    Color Spaces & Additive vs Subtractive Color

    Before you can control color in print, you need to understand one surprising fact: a screen and a printed page make color in physically opposite ways .
  3. 3

    Color Management: ICC Profiles & the Pipeline

    In the last section you saw that a screen and a printing press do not speak the same color language: a glowing screen mixes light (RGB), a press lays down ink…
  4. 4

    Rendering Intents & Gamut Mapping

    In the last section you learned how color gets translated from one space to another. This section answers the harder question: what happens when the…
  5. 5

    Gamut & Out-of-Gamut Handling (Deep Dive)

    You pick a gorgeous electric-blue logo on your screen. It glows. You order 500 business cards. They arrive looking like a tired, dusty navy.
  6. 6

    Ink on the Page: Spot Colors, Overprint & Black Generation

    So far we've talked about color in the abstract. This section is about the physical ink that lands on paper : where it comes from, how layers of it interact,…
  7. 7

    Raster vs Vector, Resolution & Image Quality

    Every image that goes to a printing press is, at heart, one of two things: a grid of colored dots, or a set of math instructions.
  8. 8

    Halftoning & Screening: Turning Tone into Dots

    Look at a photo on your phone and you see a smooth, continuous slide from light to dark — millions of shades.
  9. 9

    Trapping (Deep Dive)

    When a printing press lays down color, it does not paint all the colors at once. Each ink — say cyan, then magenta, then a special blue — is applied by its own…
  10. 10

    Inside a PDF: Structure, Graphics & Fonts

    You send PDFs to the print shop every day, but what is actually inside one? Understanding the anatomy of a PDF is the single best way to stop the most common…
  11. 11

    Typography & Text Rendering

    Text is the part of a design people actually read . A logo can be vague and still work; a price, a phone number, or a paragraph of legal fine print cannot.
  12. 12

    PDF/X, Output Intent & Page Boxes — The Print-Ready Target

    By now you understand color, ink, and presses. This section is about the file you actually hand to the printer.
  13. 13

    Preflight: Validating a File Before It Prints

    Preflight is the single cheapest piece of insurance in the entire print workflow. It is an automated technical inspection of a print file — almost always a PDF…
  14. 14

    Imposition & Binding: Arranging Pages on the Sheet

    Open any printed booklet and the pages run neatly 1, 2, 3, 4… But the giant sheet that came off the press did not have its pages in that order.
  15. 15

    Finishing & Document Geometry: Bleed, Trim & Safe Area

    When a designer sends a file to a print shop, the screen shows a clean rectangle exactly the size of the finished product.
  16. 16

    Print Methods & Substrates: How Ink Meets Paper

    So far you have learned how color is described, measured, and managed. Now we reach the moment where all of that theory becomes something physical: ink (or…
  17. 17

    The RIP, Press Operation & Color Measurement

    You have designed a file, chosen colors, and exported a PDF. But a printing press cannot read a PDF, and it cannot lay down "50% gray ink." Something has to…