1. What Are Solvents in Inkjet Ink?
In inkjet printing, solvents serve as the carrier fluid for dyes or pigments. They dissolve other ink components and evaporate after printing, allowing the ink to adhere and dry on the substrate.
Key Functions of Solvents:
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Control ink viscosity and jetting behavior
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Facilitate fast drying on non-porous surfaces
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Maintain chemical stability in the ink system
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Influence adhesion and durability of the printed code
2. Types of Solvents Used in Industrial Inks
| Solvent Type | Characteristics | Typical Use Cases |
|---|---|---|
| MEK (Methyl Ethyl Ketone) | Very fast drying, aggressive dissolving power | General-purpose CIJ inks |
| Ethanol | Moderate drying, lower odor | Food, pharma, electronics (low-VOC use) |
| Acetone | Ultra-fast drying, highly volatile | High-speed production lines, cable marking |
| Water | Non-volatile, eco-friendly | TIJ inks for porous materials (e.g., paper) |
| IPA (Isopropyl Alcohol) | Fast drying, intermediate evaporation rate | Cleaner or blended solvent component |
3. Solvent Compatibility by Printer Type
| Printer Type | Common Solvent Base | Notes |
|---|---|---|
| CIJ | MEK, Ethanol, Acetone | Most solvent-intensive; requires regular make-up |
| TIJ | Water, Ethanol | Lower solvent load; cartridge-based |
| DOD | Oil, MEK | High-viscosity inks may use non-volatile bases |
| Laser Printers (non-ink) | N/A | Do not require solvent-based ink |
4. What Is Make-Up Fluid?
Make-up is a diluted solvent added to CIJ ink systems to:
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Compensate for solvent evaporation
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Maintain proper viscosity and conductivity
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Ensure stable ink drop formation during printing
Example:
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Videojet V420 (Black MEK ink) uses M513 make-up fluid
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Domino 2BK118 ink uses 4006 make-up fluid
Make-up is consumed continuously and must be monitored closely in CIJ printers.
5. Safe Storage and Handling of Solvents
Storage Guidelines:
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Keep in tightly sealed, original containers
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Store at 10–30°C (50–86°F) in a well-ventilated area
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Keep away from open flames, sparks, or heat sources
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Do not store in direct sunlight
Personal Protective Equipment (PPE):
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Nitrile gloves
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Eye protection (goggles)
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Respirators for prolonged exposure in enclosed areas
6. Transportation and Labeling Requirements
Solvents are classified as dangerous goods under international transport regulations.
| Classification System | Required Label/Symbol |
|---|---|
| GHS |  |
| IMDG (sea) | UN1263 (Ink/solvent) |
| IATA (air) | UN1219 (IPA), UN1993 (MEK) |
| DOT (US) | Class 3 flammable liquid |
Always request or provide an MSDS and UN code when shipping or importing solvents.
7. Shelf Life and Expiration Signs
| Solvent Type | Typical Shelf Life | Signs of Expiration |
|---|---|---|
| MEK/Ethanol | 12–24 months | Cloudiness, reduced volatility |
| Acetone | 18 months | Loss of strength, phase separation |
| Water-Based | 9–18 months | Mold growth, odor, color change |
Tip: Label containers with “Date Opened” for inventory tracking.
8. Environmental and Health Considerations
Risks:
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Inhalation of fumes can cause dizziness, headaches
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Long-term exposure may affect liver/kidneys (MEK, acetone)
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Spills can contaminate groundwater or surfaces
Mitigation:
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Use in ventilated areas or fume hoods
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Train staff with MSDS and emergency procedures
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Dispose of solvents according to local hazardous waste laws
9. How to Choose the Right Solvent for Your Ink
Ask these questions:
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What is the base of the ink (MEK, ethanol, water)?
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What substrate are you printing on (plastic, glass, paper)?
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How fast is the production line (drying speed needed)?
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Is low odor or food-safe ink required?
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Does your printer brand recommend a specific make-up fluid?
Note: Using an incompatible solvent can cause:
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Nozzle clogging
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Print defects
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Ink instability
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Voided printer warranties
10. Solvents from ChinaCIJInk.com
We supply a full range of compatible solvents and make-up fluids:
| Cheef Code | For OEM Ink | Base Type | Use |
|---|---|---|---|
| C-M513 | Videojet V420/V423 | MEK | Fast-drying ink maintenance |
| C-M355 | Videojet Pigment Ink | MEK | For white/yellow inks |
| C-4006 | Domino 2BK118 | MEK | Standard solvent make-up |
| C-M411 | Food-grade inks | Ethanol | Low odor, safe print zones |
All products include:
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MSDS
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UN labeling for shipping
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GHS compliance
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Bulk and OEM/private-label options
Conclusion
Solvents are a vital but often overlooked part of the inkjet printing process. From ensuring ink performance to enabling safe handling and compliance, understanding solvents is essential for any serious buyer, distributor, or print technician. At ChinaCIJInk.com, we deliver high-quality, compliant solvents and make-up fluids for all major ink types — backed by technical support and global shipping.
