Introduction
Industrial inkjet inks — whether for CIJ, TIJ, DOD, or high-resolution systems — must be stored and used within their specified shelf life to ensure consistent print quality, chemical stability, and safety.
Each ink bottle or cartridge comes with a batch number and expiration label. Knowing how to interpret this information allows you to:
- Verify product freshness before use
- Track manufacturing origin and lot consistency
- Comply with audits or customer traceability requirements
This article explains how to read and use batch codes and shelf-life indicators effectively.
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1. What Is a Batch Number?
A batch number (or lot code) is a unique identifier assigned by the manufacturer at the time of production. It usually includes:
- Factory ID or location code
- Date of manufacture (in coded or readable form)
- Batch sequence for that production day
For example, a Cheef ink might show:
Batch No: CJ23A3105
This could be decoded as:
- CJ – CIJ-compatible ink
- 23A – Year 2023, Batch Code A
- 3105 – Day 105 of the year (mid-April)
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2. Where to Find Batch and Shelf Life Info?
You’ll typically find it printed on:
- Ink bottle or cartridge label
- Outer box packaging
- Product COA (Certificate of Analysis), if provided
Label Example:
Ink Type: Solvent Black Part No: CJ-SP302A Batch No: CJ24B0127 MFG Date: 2024-05-06 EXP Date: 2025-05-05
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3. Understanding Shelf Life
- Standard shelf life for CIJ and DOD inks: 12–18 months
- TIJ cartridges: 6–12 months, depending on brand
- MEK-based inks degrade faster than water-based inks
- Shelf life is valid only under correct storage conditions (10–30°C)
Tips:
- Always rotate inventory: FIFO – First In, First Out
- Discard expired ink unless explicitly tested and verified
- Use ink before the EXP Date to ensure performance and warranty coverage
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4. Barcode and QR Integration
Many Cheef ink products now include a QR code on the label that links to:
- Lot-specific COA (Certificate of Analysis)
- Storage and handling instructions
- MSDS/SDS download links
This feature supports traceability for ISO 9001, GMP, or other quality standards.
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5. What Happens If You Use Expired Ink?
| Risk | Impact |
|——|——–|
| Viscosity Drift | Poor print quality, nozzle clogging |
| Solvent Evaporation | Adhesion failure, smudging |
| Color Degradation | Weak or inconsistent prints |
| Chemical Separation | Ink unusable or unstable |
| Legal Issues | Audit failure (especially in food/pharma sectors) |
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6. Cheef Ink Traceability System
All Cheef ink batches are traceable via internal systems:
- Every bottle is linked to raw material lot codes
- Batch test results are stored for 24 months
- Export shipments include batch-level packing lists
If a customer reports a quality issue, we can trace the entire production history within 48 hours.
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Conclusion
Batch codes and shelf-life labels are not just labels — they are your first line of quality control. By verifying dates, rotating stock, and properly storing ink, you protect your printer, your production output, and your brand reputation.
At ChinaCIJInk.com, every bottle of ink we supply includes clear batch markings, shelf-life guidance, and technical support. Contact us anytime to verify your product information or request a COA.
