1. What Is CIJ Ink?
Continuous Inkjet (CIJ) technology is one of the most widely used printing methods in industrial coding and marking. CIJ inks are specifically designed for high-speed, non-contact printing on a wide range of substrates such as plastic, metal, glass, paper, and films.
Key Features of CIJ Ink:
-
Designed for fast-drying
-
Suitable for non-porous surfaces
-
Resistant to heat, moisture, and chemicals
-
Capable of printing at high speeds without smudging
2. Core Ingredients in CIJ Ink
Understanding the composition of CIJ ink helps users choose the right ink for their specific application:
| Component | Function |
|---|---|
| Solvents | Ensure proper fluidity and evaporation (e.g., MEK) |
| Colorants | Provide print visibility — can be dyes or pigments |
| Binders | Improve adhesion to substrates |
| Additives | Modify drying time, conductivity, and jetting quality |
Solvent Base Types:
-
MEK (Methyl Ethyl Ketone): Fast-drying, widely used
-
Ethanol-Based: Lower odor, suitable for certain food packaging
-
Acetone: For specialized applications requiring ultra-fast drying
3. Common CIJ Ink Colors and Applications
-
Black MEK Ink: Most common, used in general packaging
-
White Pigment Ink: For dark substrates like cables and bottles
-
UV-Visible Ink: For security or anti-counterfeit purposes
-
Food-Grade Ink: Meets FDA/EU compliance for direct/indirect contact
Industry Examples:
-
Beverage bottles → High-speed production lines
-
Electronics → Component coding with fine text
-
Automotive → Durable codes on metal/plastic parts
4. Key Ink Properties to Compare
When choosing CIJ ink, consider these measurable properties:
| Property | Relevance |
|---|---|
| Viscosity | Affects ink flow and drop formation |
| Surface Tension | Influences print sharpness |
| Conductivity | Critical for charging droplets |
| Drying Time | Important for high-speed lines |
| Adhesion Strength | Determines durability on substrates |
5. Ink Compatibility and Printer Models
CIJ inks are typically formulated for compatibility with specific printer brands:
| Brand | Compatible Ink Examples |
|---|---|
| Videojet | V420, V423, V705, V411 (Black, MEK) |
| Domino | 2BK118, 6BK111, 2YL912 (Black, Yellow) |
| Linx | 1240, 1210, 1055 (Black, White, UV) |
| Markem-Imaje | 5191, 5195, 5155 (Fast dry, pigment ink) |
Always check the printer model and ink spec sheet before use.
6. CIJ Ink Handling, Storage, and Shelf Life
Best Practices:
-
Store between 5°C and 35°C (41°F–95°F)
-
Keep tightly sealed to prevent solvent evaporation
-
Avoid direct sunlight and high humidity
-
Use within 12–18 months for optimal performance
Signs of Expired Ink:
-
Thicker consistency
-
Irregular droplet formation
-
Print defects such as fading or smudging
7. Cleaning Fluids and Maintenance Tips
CIJ printers require regular flushing and maintenance to avoid blockages and ensure quality prints.
Types of Cleaning Fluids:
-
Compatible solvent-based cleaners (e.g., MEK or ethanol-based)
-
Non-reactive flush solutions for long-term storage
Maintenance Tips:
-
Clean the nozzle after shutdown
-
Run automatic flush cycles regularly
-
Replace ink filters as per manufacturer guidelines
8. MSDS and Safety Handling
Each ink has a Material Safety Data Sheet (MSDS) that provides critical information about:
-
Hazard identification
-
First aid measures
-
Fire-fighting methods
-
Safe storage and transport
-
PPE (Personal Protective Equipment) recommendations
Always ensure your team is trained in handling chemicals safely.
9. Cost Considerations and Consumption Rate
Ink cost isn’t only about price per liter — you should also consider:
| Factor | Impact |
|---|---|
| Ink consumption per code | Depends on font, size, speed |
| Shelf life | Spoiled ink = waste |
| Maintenance frequency | More cleaning = higher solvent usage |
Average consumption:
A typical CIJ printer uses 0.5–2 mL per 1,000 prints, depending on code complexity.
10. How to Choose the Right CIJ Ink Supplier
Checklist:
-
Reliable delivery of compatible ink
-
MSDS and compliance documentation
-
Technical support for trials and maintenance
-
Transparent refund/replacement policy
Conclusion
CIJ ink is the heart of many industrial coding systems — from beverage packaging to wire marking. Choosing the right ink depends on understanding your substrates, printer model, and production environment. At ChinaCIJInk.com, we offer a complete range of high-quality CIJ inks, solvents, and cleaning solutions designed to meet your industry needs.
