When I started in graphic design, much of what I knew about production was passed down by senior colleagues. CMYK values for black, skin tones and other difficult colours became recipes: remember them, reuse them, move on.

Years later, I realised that some of those recipes were less universal than they sounded. Papers changed, presses and RIPs improved, and colour management became more reliable. Some habits simply outlived the conditions that created them. It is worth re-checking even the professional knowledge you trust.

01 / choose black for the job.

A practical starting point, not a universal specification. The printing condition, ICC profile and printer’s requirements always win.

Do not treat a profile’s maximum total area coverage as a rich-black recipe. It is a ceiling for the separation, not a target for every black object.

02 / paper and process matter.

Coated stock usually holds a cleaner dot and stronger surface contrast. Uncoated stock absorbs and spreads ink differently, so the same build can look softer and less dense. FOGRA51 describes a coated offset condition; FOGRA52 an uncoated one. They are output conditions, not decorative labels.

Offset makes four physical separations and registration is part of the decision: keep small typography K-only and control total ink. Digital devices interpret colour through their own RIP and engine, so the printer’s device-specific recommendation may be more useful than a favourite studio recipe.

[REAL PRINT DOCUMENTATION NEEDED] Photograph the same 100K and rich-black patches on coated, uncoated and the selected digital stock. Include one full view and one macro detail; do not substitute generated evidence.

03 / check what is actually there.

In Photoshop, open Window → Info. Set one readout to CMYK Color and the other to Total Ink. Move the pointer across the darkest parts of the image and compare the values with the intended output condition.

• Confirm the document profile and the intended proof / output condition.

• Watch the CMYK separation and Total Ink together; a dark-looking pixel is not a specification.

• If the image was separated for the wrong condition, prefer a controlled ICC conversion over mechanically pulling individual curves.

• Re-check shadow detail and neutrals after conversion, then inspect the exported PDF as well.

[SCREENSHOT NEEDED] Photoshop Info panel showing CMYK Color and Total Ink on a real production image, with the actual profile and measured values visible.

04 / before the PDF leaves.

• Output condition: do we know the press, paper and requested profile?

• Black text: is small typography K-only?

• Rich black: are large surfaces built intentionally rather than maxed out?

• Total ink: does the separation respect the selected condition?

• Overprint and separations: do black and white objects behave as intended?

• Images: correct profiles, effective resolution and separations?

• PDF standard: which PDF/X variant does the printer require?

• Final check: inspect the exported PDF in Output Preview, not only the source document.

[SCREENSHOT NEEDED] Acrobat Output Preview showing separations, overprint and total area coverage from the final pilot PDF.

A small detour: how black can black be?

CMYK makes black by combining inks on a substrate. Ultra-black paints ask a different question: how little light can a surface reflect? Jackson’s Absolute Black claims roughly 99% light absorption, using an extremely matt surface to suppress highlights and make three-dimensional forms appear strangely flat. It is unrelated to CMYK file preparation, but a useful reminder that black is not simply a number — it is what we perceive when light meets a surface.

Absolute Black — Jackson’s Art

Sources & further reading.

Fogra — characterisation data and printing conditions

European Color Initiative — current ICC profile downloads

Ghent Workgroup — Digital Print Specification

Ghent Workgroup — PDF/X workflow

Adobe — Photoshop Info panel and Total Ink

How do you handle black?

Different printers, papers and processes call for different approaches. A restrained discussion area will live here once moderation, storage and spam handling are defined.

[COMMENTS PLACEHOLDER] Name · Comment · Submit. Comments moderated; no account required. This is intentionally non-functional for the pilot.