Color, raster, vector, and the craft of getting pixels onto paper.https://penluma.com/https://penluma.com/blog/computer-graphics-print/01-how-color-works-light-human-perception/https://penluma.com/blog/computer-graphics-print/01-how-color-works-light-human-perception/Color isn't in objects or even in light. Learn how color works, why your brain invents it, and the one idea that explains every color mismatch you have seen.Sun, 21 Jun 2026 00:00:00 GMTComputer Graphics for Printhttps://penluma.com/blog/computer-graphics-print/02-color-spaces-additive-vs-subtractive-color/https://penluma.com/blog/computer-graphics-print/02-color-spaces-additive-vs-subtractive-color/Screens and paper make color in physically opposite ways. Learn how RGB vs CMYK, Lab, and gamut work so your print colors match what you designed.Sun, 21 Jun 2026 00:00:00 GMTComputer Graphics for Printhttps://penluma.com/blog/computer-graphics-print/03-color-management-icc-profiles-the-pipeline/https://penluma.com/blog/computer-graphics-print/03-color-management-icc-profiles-the-pipeline/ICC profiles and color management explained in plain language: how the same color stays true as it travels from camera to calibrated screen to printing press.Sun, 21 Jun 2026 00:00:00 GMTComputer Graphics for Printhttps://penluma.com/blog/computer-graphics-print/04-rendering-intents-gamut-mapping/https://penluma.com/blog/computer-graphics-print/04-rendering-intents-gamut-mapping/Why your bright screen colors look dull on paper, and how rendering intents and gamut mapping pick the right substitute so prints still look great.Sun, 21 Jun 2026 00:00:00 GMTComputer Graphics for Printhttps://penluma.com/blog/computer-graphics-print/05-gamut-out-of-gamut-handling-deep-dive/https://penluma.com/blog/computer-graphics-print/05-gamut-out-of-gamut-handling-deep-dive/That glowing screen color prints as dusty navy because it's out of gamut. Learn why CMYK can't print every RGB color and how to fix it before you order.Sun, 21 Jun 2026 00:00:00 GMTComputer Graphics for Printhttps://penluma.com/blog/computer-graphics-print/06-ink-on-the-page-spot-colors-overprint-black-generation/https://penluma.com/blog/computer-graphics-print/06-ink-on-the-page-spot-colors-overprint-black-generation/Learn why a black box prints gray, how spot colors beat CMYK, and when to use rich black, overprint, and ink limits to avoid a costly reprint.Sun, 21 Jun 2026 00:00:00 GMTComputer Graphics for Printhttps://penluma.com/blog/computer-graphics-print/07-raster-vs-vector-resolution-image-quality/https://penluma.com/blog/computer-graphics-print/07-raster-vs-vector-resolution-image-quality/Raster vs vector decides whether your print comes out crisp or blurry. Learn PPI, the real 300 dpi rule, and how to keep logos and photos sharp at any size.Sun, 21 Jun 2026 00:00:00 GMTComputer Graphics for Printhttps://penluma.com/blog/computer-graphics-print/08-halftoning-screening-turning-tone-into-dots/https://penluma.com/blog/computer-graphics-print/08-halftoning-screening-turning-tone-into-dots/Printers can only lay ink on or off, yet your photo prints in smooth tone. Halftoning is the trick. Learn AM vs FM screening, LPI, dot gain, and more.Sun, 21 Jun 2026 00:00:00 GMTComputer Graphics for Printhttps://penluma.com/blog/computer-graphics-print/09-trapping-deep-dive/https://penluma.com/blog/computer-graphics-print/09-trapping-deep-dive/Trapping in print stops ugly white gaps where two colors meet. Learn spread vs choke, the lighter-color rule, overprinting black, and when to skip it.Sun, 21 Jun 2026 00:00:00 GMTComputer Graphics for Printhttps://penluma.com/blog/computer-graphics-print/10-inside-a-pdf-structure-graphics-fonts/https://penluma.com/blog/computer-graphics-print/10-inside-a-pdf-structure-graphics-fonts/What is really inside a PDF? Learn the anatomy of a PDF file, why fonts and color cause print disasters, and how to ship files that print perfectly.Sun, 21 Jun 2026 00:00:00 GMTComputer Graphics for Printhttps://penluma.com/blog/computer-graphics-print/11-typography-text-rendering/https://penluma.com/blog/computer-graphics-print/11-typography-text-rendering/Learn how characters, glyphs, fonts, and kerning really work, plus the print settings that keep small text crisp instead of fuzzy and ghosted on paper.Sun, 21 Jun 2026 00:00:00 GMTComputer Graphics for Printhttps://penluma.com/blog/computer-graphics-print/12-pdf-x-output-intent-page-boxes-the-print-ready-target/https://penluma.com/blog/computer-graphics-print/12-pdf-x-output-intent-page-boxes-the-print-ready-target/Learn what PDF/X really is, why X-4 beats X-1a, how output intent locks your color, and how page boxes tell the press exactly where to cut your job.Sun, 21 Jun 2026 00:00:00 GMTComputer Graphics for Printhttps://penluma.com/blog/computer-graphics-print/13-preflight-validating-a-file-before-it-prints/https://penluma.com/blog/computer-graphics-print/13-preflight-validating-a-file-before-it-prints/A preflight check is the cheapest insurance in print. Learn what it inspects, how it saves you from costly reprints, and how to pass it on the first try.Sun, 21 Jun 2026 00:00:00 GMTComputer Graphics for Printhttps://penluma.com/blog/computer-graphics-print/14-imposition-binding-arranging-pages-on-the-sheet/https://penluma.com/blog/computer-graphics-print/14-imposition-binding-arranging-pages-on-the-sheet/Imposition is why a press sheet looks scrambled yet folds into perfect page order. Learn signatures, binding, creep, bleed, and how to prep files right.Sun, 21 Jun 2026 00:00:00 GMTComputer Graphics for Printhttps://penluma.com/blog/computer-graphics-print/15-finishing-document-geometry-bleed-trim-safe-area/https://penluma.com/blog/computer-graphics-print/15-finishing-document-geometry-bleed-trim-safe-area/Learn how bleed, trim, and safe area protect your print designs from white edges and shaved-off text, plus the finishing setup pros use to get it right.Sun, 21 Jun 2026 00:00:00 GMTComputer Graphics for Printhttps://penluma.com/blog/computer-graphics-print/16-print-methods-substrates-how-ink-meets-paper/https://penluma.com/blog/computer-graphics-print/16-print-methods-substrates-how-ink-meets-paper/Offset, digital, screen, DTG, or flexo? Learn how each print method works, its cost sweet spot, and how paper and ink choices decide which one wins your job.Sun, 21 Jun 2026 00:00:00 GMTComputer Graphics for Printhttps://penluma.com/blog/computer-graphics-print/17-the-rip-press-operation-color-measurement/https://penluma.com/blog/computer-graphics-print/17-the-rip-press-operation-color-measurement/A printing press cannot read a PDF or lay down 50% gray ink. Learn how the RIP, press operation, and color measurement turn your file into ink that matches.Sun, 21 Jun 2026 00:00:00 GMTComputer Graphics for Print