Print Quality, the Unseen Power of Coding
The small date code on a package on the production line represents the brand's reliability, legal compliance, and consumer value. However, the quality of that small print reflects the professionalism of the entire process.
In inkjet date coding systems, print quality depends not only on the brand of the device but also on many variables such as correct ink selection, surface type, printing distance, environmental conditions and regular maintenance
As Electrojet, our experiences over the years in production lines in different sectors show that these 5 critical factors directly determine print quality.
1-Ink Type and Quality: The Foundation of Printing
Ink is one of the most important factors determining print quality in inkjet systems. Incorrectly selected or low-quality ink, especially in high-speed production lines, can:
- Dispersion and blurring,
- Inadequate drying,
- color inconsistency
.
Electrojet ink formulations have been developed specifically for each surface type:
- Low odor and solvent resistance in food packaging,
- High adhesion strength on metal and glass surfaces,
- Provides fast drying time on paper and cardboard.
Pro tip: , consider not only color but viscosity and solvent ratio
2-Nozzle (Print Head) Cleaning and Maintenance Frequency
The "heart" of an inkjet machine is the print head. Over time, the nozzles become affected by dust, ink residue, or solvent vapors, causing dot loss , line distortion , or text erasure
Benefits of regular maintenance:
- It ensures that the ink flow remains constant.
- Prevents drop routing errors.
- It extends machine life and increases printing stability.
In Electrojet Inkjet systems, automatic head cleaning feature and optimized solvent flow ensure maximum printing stability with minimum human intervention.
Expert tip: Run the automatic "flush" cycle before the production line shuts down for the day. This is a 30-second process, but it can improve print quality by up to 30% in the long run.
3-Print Distance and Surface Type
During coding, the distance determines the dot dispersion angle. The optimal distance is generally between 2–4 mm. However, variables such as packaging shape, surface curvature, or vibration can affect this distance.
Ink behavior varies depending on the surface type:
| Surface Type | Possible Problem | Solution |
| Plastic (PE, PP) | The hold is weak | Surface pretreatment or solvent-based ink |
| Metal | Ink dispersion | Fast drying pigment ink |
| Pine | Late drying | UV resistant formula |
| Cardboard | No disintegration but porous | Low viscosity ink |
Pro Tip: The automatic distance calibration sensor in the print head of Electrojet devices ensures constant print quality even with surface changes.
4-Ambient Conditions: Temperature, Humidity and Air Flow
Inkjet print quality is significantly affected by the microclimate
Recommended environmental conditions:
- Temperature: 20–30 °C
- Humidity: %40–60
- Airflow: No direct wind should blow on the press line.
Suggestion from Electrojet engineers: air filtration and a stable humidity control system into the line area significantly increases print consistency.
5-Software Calibration and Data Transmission
In modern inkjet systems, printing is not merely mechanical but also digitally controlled process. The settings in the encoding software (dpi, drop size, speed synchronization, font type) are the final determining factor in print quality.
Electrojet control software automatically synchronizes print density with production speed, ensuring the same level of readability on every product.
Data integration recommendation: Connect with your ERP or production tracking system to automatically transfer . This reduces human error and ensures data integrity.
Quality Printing, Reliable Brand
Date coding isn't just a necessity; it's a testament to a brand's production discipline. High print quality on inkjet machines the right ink , well-maintained nozzles , appropriate spacing , controlled environmental conditions , and accurate software calibration .
we provide you with clear, durable and high-contrast prints in your production lines with inkjet solutions specific to each sector
Do you want to improve print quality on your production line? Contact Electrojet's experts, and together we can plan the most suitable inkjet coding solution for your line.
