What’s on the Halftone & Screening poster
A definition and 6 facts worth remembering.
A press prints solid ink or none at all. Tone is simulated by dots of varying size on a ruled screen, measured in lines per inch.
- Newsprint about 85 lpi; coated stock 150-175 lpi.
- Fine art printing reaches 200 lpi and beyond.
- Image ppi should be roughly twice the line screen.
- That is where 300 ppi for 150 lpi comes from.
- Each ink is screened at a different angle.
- Wrong angles between screens produce moiré.
- Rule of thumb — ppi ≈ 2 × lpi
- Coated stock — 150-175 lpi
- Scanning an already-printed image re-screens it and makes moiré; descreen at the scan…
Stochastic screening uses equal dots at random positions rather than a ruled grid, which removes moiré and holds more detail.
Questions about the Halftone & Screening poster
- What’s on the Halftone & Screening poster?
- A definition and 6 facts worth remembering. A press prints solid ink or none at all. Tone is simulated by dots of varying size on a ruled screen, measured in lines per inch. Newsprint about 85 lpi; coated stock 150-175 lpi.; Fine art printing reaches 200 lpi and beyond.; Image ppi should be roughly twice the line screen.; That is where 300 ppi for 150 lpi comes from.; Each ink is screened at a different angle.; Wrong angles between screens produce moiré.; Rule of thumb — ppi ≈ 2 × lpi; Coated stock — 150-175 lpi; Scanning an already-printed image re-screens it and makes moiré; descreen at the scan…. Stochastic screening uses equal dots at random positions rather than a ruled grid, which removes moiré and holds more detail.
- Who is the Halftone & Screening poster for?
- Halftone & Screening belongs to the Art & Design section rather than to a school year, because design is not something one grade owns. Anyone learning digital design can pin it up — a beginner, a student mid-course, or someone revising years later.
- When should you use the Halftone & Screening poster?
- Use it when a printer asks about line screen, or when a scan comes out patterned. A wall chart earns its place by being glanceable from where the work is happening, so Halftone & Screening belongs on the wall where that design work actually happens, within glancing distance, rather than filed away.
- What other posters go with Halftone & Screening?
- Bezier Curves, Bleed & Trim and Colour Profiles sit alongside Halftone & Screening in the Art & Design section. Printed together they make a wall rather than a single sheet, which is how a reference set actually gets used.Bezier CurvesBleed & TrimColour Profiles
- Is the Halftone & Screening poster free to download and print?
- Yes. Halftone & Screening downloads as a free PDF with no account, no email and no watermark, like everything else in the Art & Design section. Print as many copies as you like for a home, a classroom, a library or a tutoring group; reselling the file is the only thing the licence rules out.Read the licence
- What size does the Halftone & Screening poster print at?
- Halftone & Screening is a vector PDF laid out for US Letter, and prints on A4 with Fit to page — the same file, no separate download. Because every mark on it is drawn rather than photographed, it stays sharp enlarged to A3, A2 or A1 at a copy shop. Colour carries emphasis only, so a greyscale print of Halftone & Screening loses nothing.Printing guide
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