🖨 Inkjet DTS

Inkjet Drop density – Throughput – Spread

Inkjet DTS is a minimal design model for understanding
how print quality, throughput, and dot spread
are causally coupled in inkjet printing systems.

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🔗 Links

Language	GitHub Pages 🌐	GitHub 💻
🇺🇸 English

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🧭 Overview

This page presents a minimal educational model for understanding the
fundamental trade-off in inkjet printing between:

• 🖨 Print quality
• ⚡ Printing speed

The model is intentionally simplified.
Its purpose is to clarify design causality, not to reproduce the behavior
of real printers or specific products.

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🗂 Directory Structure

This repository is organized to clearly separate
theoretical modeling, simulation code, and visual outputs.

inkjet-dts/
├─ _config.yml
├─ index.md
├─ README.md
│
├─ _layouts/
│  └─ default.html
│
├─ _includes/
│  └─ head.html
│
├─ assets/
│  └─ css/
│     └─ style.css
|
├─ demo/
│  ├─ index.html     
│  └─ demo.js
│
├─ code/
│  ├─ main.py
│  ├─ model.py
│  └─ render.py
│
└─ images/
   ├─ print_fast.png
   ├─ print_high_quality.png
   ├─ print_large_dot.png
   └─ print_small_dot.png

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🎯 Design Intent

• 📁 code/ contains a minimal but explicit Python model of inkjet trade-offs
• 🖼 images/ visualizes how parameter choices affect dot spread and print quality
• 🌐 GitHub Pages is used to document the model, not to execute it

This separation keeps the system easy to understand, extend, and reuse
for educational purposes.

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🧮 Dominant axes (D–T–S)

Inkjet printing behavior can be reduced to three dominant axes:

• D — Drop density
  Number of ink drops per unit area
  → governs graininess and perceived image quality

• T — Throughput
  Ink ejection capability per unit time
  → limits achievable printing speed

• S — Spread
  Dot spread on the medium (ink–paper interaction)
  → determines sharpness versus bleeding

Most practical parameters
(dpi, passes, drop size, color count, nozzle count)
can be expressed as combinations of these three axes.

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🖼 Visualization examples

Graininess vs. quality

Lower drop density (FAST mode)

Higher drop density (HIGH QUALITY mode)

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Dot spread effect

Small dot (sharper edges)

Large dot (increased bleeding)

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▶ Interactive Animation Demo

Inkjet DTS (Drop Density – Throughput – Spread)

This interactive demo provides a conceptual visualization of the
fundamental trade-off in inkjet printing:

• 💧 Drop Density (D) — number of ink droplets per unit area
• ⚡ Throughput (T) — printing speed / firing frequency
• 🌊 Spread (S) — dot expansion caused by fluid dynamics and substrate interaction

By adjusting these three parameters, the demo illustrates how
print quality and printing speed inherently compete with each other.

The visualization is based on a synthetic, educational model intended
to build intuition — it does not represent measured data or a
device-specific simulation.

👉 Launch Demo

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📝 Notes

• 🧪 The images shown above are synthetic visualizations, not measured print data
• 👀 They are designed to make qualitative differences immediately visible
• 🎯 Numerical accuracy and product-specific tuning are intentionally out of scope

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🎓 Purpose

This project is intended to support:

• engineering education
• early-stage design discussions
• clear explanation of inkjet trade-offs

by keeping the model simple, executable, and visual.

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👤 Author

📌 Item	Details
Name	Shinichi Samizo
Expertise	Semiconductor devices (logic, memory, high-voltage mixed-signal) Thin-film piezo actuators for inkjet systems Printhead productization, BOM management, ISO training
GitHub

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📄 License

📌 Item	License	Description
Source Code	MIT License	Free to use, modify, and redistribute
Text Materials	CC BY 4.0 or CC BY-SA 4.0	Attribution required; share-alike applies for BY-SA
Figures & Diagrams	CC BY-NC 4.0	Non-commercial use only
External References	Follow the original license	Cite the original source properly

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💬　Feedback

Suggestions, improvements, and discussions are welcome via GitHub Discussions.