In the manufacturing industry, printing information such as production date, batch number, serial number, and barcodes on products is crucial for both product traceability and quality control. One of the most widely preferred coding technologies, especially for high-speed production lines, is the Continuous Inkjet (CIJ) coding system.

CIJ coding technology is an industrial marking method that enables fast, non-contact printing on a wide range of surfaces such as plastic, glass, metal, paper, and foil. These systems allow continuous coding without stopping production lines, making them ideal for modern manufacturing environments.

So, what is a Continuous Inkjet (CIJ) coding machine, how does it work, and in which industries is it used?

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What is a Continuous Inkjet (CIJ) Coding Machine?

Continuous Inkjet (CIJ) coding technology is a non-contact printing system in which ink is continuously sprayed and electrostatically directed onto the product surface.

In this system, ink is pressurized and ejected through a nozzle, where it breaks into microscopic droplets. These droplets are controlled using an electrostatic field and directed onto the product surface. Unused ink droplets are then recovered and returned to the system.

Thanks to this technology, factories operating at high production speeds can perform reliable and uninterrupted coding.

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Technical Features of Continuous Inkjet Coding Machines

Continuous Inkjet coding machines are equipped with advanced features designed to deliver high performance in production environments.

Key technical features include:

• The most commonly used nozzle diameter is 60 microns, with additional nozzle size options available

• Print height ranging from 1 mm to 20 mm

• Non-contact printing distance up to 10 mm

• Ability to print more than 1000 characters per minute

• Compatible with solvent-based, pigmented, and UV inks

• Capable of printing date, batch number, serial number, barcodes, QR codes, logos, and text

• Easy integration into production lines through Ethernet, RS232, USB, and in some models Wi-Fi connectivity

These features make CIJ coding machines a reliable and flexible solution for high-speed production lines.

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Advantages of Continuous Inkjet Coding Machines

Continuous Inkjet technology offers many advantages for industrial production lines.

1. High-Speed Coding

Depending on the model, CIJ coding machines can print more than 1000 characters per minute, making them ideal for high-speed production environments.

2. Continuous 24/7 Operation

Continuous Inkjet systems are designed for 24/7 uninterrupted operation, allowing production lines to continue running without stopping for coding processes.

3. Fast-Drying Ink

Solvent-based inks adhere quickly to surfaces and dry rapidly, reducing the risk of smudging or fading during production.

4. Printing on Various Surfaces

CIJ coding machines can easily print on a wide variety of materials, including:

• Plastic

• Glass

• Metal

• Foil

• Paper

• Rubber

5. Non-Contact Printing Technology

Since CIJ printers operate without direct contact with the product, they can produce clear and accurate prints even on curved or delicate surfaces.

6. Optimized Ink Consumption

In CIJ technology, unused ink is recirculated back into the system, optimizing ink consumption and reducing operating costs.

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Applications of Continuous Inkjet Coding Machines

Continuous Inkjet coding machines are widely used across many industries.

Food and Beverage Industry

Printing production dates, expiration dates, and batch numbers on bottles, cans, and plastic packaging.

Cosmetics and Pharmaceutical Industry

Printing serial numbers and production information on ampoules, vials, cream tubes, and cosmetic packaging.

Electronics and Industrial Manufacturing

CIJ systems are commonly used for durable coding on:

• Cables

• Printed circuit boards (PCB)

• Metal components

Construction and Building Materials

Printing product codes and production information on surfaces such as pipes, profiles, ceramics, and concrete materials.

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Conclusion

Continuous Inkjet (CIJ) coding machines are reliable and flexible marking solutions developed for high-speed production lines. Thanks to their non-contact printing technology, fast-drying inks, and ability to print on various surfaces, they are widely used across many industries.

CIJ coding systems provide one of the most effective solutions for product traceability and high-quality coding in industries such as food, beverage, cosmetics, pharmaceuticals, automotive, and packaging.