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 numerous variables such as the 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,
- It brings with it problems such as color inconsistency
Electrojet ink formulationsare specifically developed 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.
Professional tip: When choosing ink , consider not only color but also viscosity and solvent ratio . These values directly affect nozzle performance and print resolution
2-Nozzle (Print Head) Cleaning and Maintenance Frequency
The "heart" of an inkjet machine is the print head. Over time, nozzles are affected by dust, ink residue, or solvent vapors. This can lead to dot loss , line distortion , or smudging of text
Benefits of regular maintenance:
- It ensures that the ink flow remains constant.
- Prevents drop routing errors.
- It extends machine life and increases printing stability.
Electrojet inkjet systems provide maximum print stability with minimum human intervention thanks to automatic printhead cleaning and optimized solvent flow.
Expert tip: Run the automatic "flush" (cleaning) cycle before the daily production line shutdown. This process takes only 30 seconds, but in the long run, it improves print quality by up to 30%.
3-Print Distance and Surface Type
During coding, the distance between the print head and the surface determines the dispersion angle of the print dots. Generally, the optimum distance is in the range of 2–4 mm. However, variables such as the shape of the packaging, surface inclination, 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 located in the print head of Electrojet devices ensures consistent print quality even with surface changes.
4-Ambient Conditions: Temperature, Humidity and Air Flow
Inkjet print quality is greatly affected by the microclimate conditions on the production line. High humidity causes the ink to dry slowly, while excessive heat leads to rapid evaporation of the solvent
Recommended environmental conditions:
- Temperature: 20–30 °C
- Humidity: %40–60
- Airflow: No direct wind should blow on the press line.
Electrojet engineers suggest: Integrating an air filtration and stable humidity control system into the production area will significantly improve print consistency
5-Software Calibration and Data Transmission
In modern inkjet systems, printing is not only a mechanical process but also digitally controlled process. Settings in the coding software (dpi, drop size, speed synchronization, font type) are the final link in determining print quality.
Electrojet control software automatically synchronizes print density with production speed, ensuring the same level of readability on every product.
Data integration suggestion: Automatically transfer date, lot, and barcode information by connecting to your ERP or production tracking system . This reduces human error and ensures data integrity.
Quality Printing, Reliable Brand
Date coding is not just a necessity, but an indicator of the brand's production discipline. High print quality in inkjet machines the right ink, well-maintained nozzles, appropriate spacing, controlled environmental conditions , and correct software calibration .
At Electrojet, we provide industry-specific inkjet solutions, enabling you to achieve crisp, durable, and high-contrast prints on your production lines
Looking to improve print quality on your production line? Contact Electrojet experts and let's plan together the best inkjet coding solution for your line.
