# Halftone (ハーフトーン（網点）)

> Halftone converts continuous tone into regularly spaced dots of changing size so it can be printed; from a distance they return to tone, while enlargement reveals the screen as material.

- IndexStyle No.584 — https://indexstyle.org/styles/halftone
- Kind: Technique · Family: Print Expression · Era: 1880s–
- Mood: Technique, Nostalgia, Rebellion
- What this family collects: Techniques that turn dots, plates and registration born from reproduction constraints into the material that constructs the image rather than defects to be hidden.

## Defining characteristics

- Large and small dots on one fixed pitch
- Light and shade made by dot area
- Rosettes from differently angled color screens
- An image that changes between normal and magnified viewing

## Best used for

- Printing photographs in newspapers, magazines and packaging with limited inks
- Using enlarged dots to make reproduction and print itself the subject

## Composition recipe

- Typography & lettering: Choose bold type or simple contours that survive conversion into dots.
- Layout & structure: Place normal-scale image and enlarged screen together to exploit changes in viewing distance.
- Material & texture: Set line frequency, dot shape, screen angle and ink color, then translate tone into dot area.

## Colour

Read off the reference works below, so a direction rather than a fixed palette.

- Ground: #F0E9D8
- The colour it is remembered by: #D94036
- Text and outlines: #171513

## What to avoid

Polka dots are not halftone. Dot size must carry continuous tone in relation to printing resolution.

## Application checklist

Work through this before calling a piece an application of this style.

- [ ] Visible in the piece: Large and small dots on one fixed pitch
- [ ] Visible in the piece: Light and shade made by dot area
- [ ] Visible in the piece: Rosettes from differently angled color screens
- [ ] Visible in the piece: An image that changes between normal and magnified viewing
- [ ] The layout follows: Place normal-scale image and enlarged screen together to exploit changes in viewing distance.
- [ ] The lettering follows: Choose bold type or simple contours that survive conversion into dots.
- [ ] The material and surface follow: Set line frequency, dot shape, screen angle and ink color, then translate tone into dot area.
- [ ] The colour relation holds: #F0E9D8 as ground, #D94036 carrying the style, #171513 for text and outlines
- [ ] At least one reference work below has been studied directly
- [ ] The caution above ("What to avoid") has been addressed

## Related styles

- **Screenprint (スクリーンプリント／シルクスクリーン)** — Parts of a mesh screen are blocked and parts left open, and a squeegee forces ink through, printing hard contours and flat, strong color one layer at a time. → https://indexstyle.org/styles/screenprint
- **Dithering (ディザリング)** — Dithering suggests unavailable intermediate colors by spatially mixing pixels from a limited palette; ordered matrices or error diffusion make both tone and a distinctive granular surface. → https://indexstyle.org/styles/dithering

## Compose it with something else

The dictionary can put this entry in a structural role and another in an accent role, and report where the two fight: https://indexstyle.org/compose?ids=halftone+screenprint

## Further study

- AM and FM halftone
- Screen angle and rosette
- Photomechanical reproduction

## Reference works

- Library of Congress — Thesaurus for Graphic Materials: Halftones — https://www.loc.gov/pictures/item/tgm004832/

## AI interpretation

An AI-generated interpretation image exists for browsing convenience only — it is not a reference work: https://indexstyle.org/ai/halftone.jpg

## Source of record

- Library of Congress — Thesaurus for Graphic Materials: Halftones — https://www.loc.gov/pictures/item/tgm004832/

## Machine surfaces

- JSON: https://indexstyle.org/api/styles/halftone
- Image-generation prompt (legally clean): https://indexstyle.org/styles/halftone/prompt.txt
- MCP: https://indexstyle.org/mcp (tools: search_styles, get_style, compare_styles, compose_styles, find_related_styles; prompts: image-prompt, apply-style)