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Overview of Coding and Marking Printers


Coding and marking printers are vital to correctly labeling and coding since they allow us to imprint important information like batch numbers, barcodes, expiry dates, and production dates on different items. This data is vital for monitoring, quality control, and meeting regulatory standards.


A wide range of materials, including cardboard, plastic, glass, and metal, may be printed using these coding and marking printers. They are so adaptable that they find homes in many different sectors, including the cosmetics, electronics, pharmaceutical, and food and beverage industries. Material, manufacturing line conditions, and code durability requirements all play a role in determining the best printer and technology to use.

Types of Coding and Marking Printers

Coding and marking printers come in various styles, each with advantages and disadvantages that make them ideal for certain tasks. Continuous Inkjet (CIJ), Thermal Inkjet (TIJ), Drop on Demand (DOD), and Laser Marking are the most popular kinds of inkjet printers.

Continuous Inkjet Printers

Continuous inkjet printers (CIJs) are dependable and flexible, making them ideal for high-speed printing. They guide electrically charged ink droplets ejected from a printer onto the product surface, which is how they function. With its high-speed printing capabilities, this technology is perfect for printing on surfaces that are not flat or round. The food and beverage sector extensively uses CIJ printers because of their versatility in printing on diverse surfaces and in various environments.

Thermal Inkjet Printers

Like regular office printers, TIJ printers need cartridges. Due to their minimal maintenance requirements, good print quality, and user-friendliness, they are highly respected. Applications necessitating high-resolution printing with little odor and volatile organic compound emissions are ideal for TIJ technology. When printing on flat surfaces, such as cartons or labels, these printers find widespread application in the cosmetics and pharmaceutical sectors.

Laser Marking Systems

Laser printers create permanent, high-quality codes by eliminating material or modifying the surface of items. They can mark on metals, polymers, and even certain kinds of paper, and they are quite effective and need little in the way of upkeep. The electronics and automotive components industries heavily use laser marking devices due to their accuracy and durability.

Thermal Transfer Overprinting

One kind of digital printing is thermal transfer overprinting (TTO), which involves pressing a ribbon of ink onto a substrate using heat and pressure. Films, foils, and labels—examples of flexible packaging materials—are ideal candidates. High-resolution printing and the capacity to create long-lasting, durable codes are two reasons why TTO printers are praised.

Drop on Demand (DOD) Inkjet Printers

DOD technique can print on both porous and non-porous surfaces, and it is often used for printing huge characters. A cost-effective method, it operates by pushing ink droplets into the substrate just when needed. Industries that need big, legible codes, such as the timber industry, often use DOD printers.

Ink and Substrate Compatibility

The compatibility of the ink with the substrate is crucial for coding and marking printers to work well. To guarantee adherence, durability, and readability, the particular features of each substrate influence the choice of ink. This includes paper, glass, metal, and plastic.


● Glass, metal, and certain plastics are examples of non-porous surfaces. Therefore, you'll need an ink that dries fast and sticks well to print on them. For these substrates, CIJ printers typically employ inks that are solvent-based. The pigment or dye bonds to the surface as the solvent evaporates, causing the ink to dry quickly.


● Cardboard and paper are porous materials that absorb ink differently than other materials. DOD and TIJ printers, which employ water-based inks, work well with these materials. The inks can soak into the surface and dry without smearing because of this.


● Some inks have specific uses, such as thermochromic inks that change color as the temperature changes or UV-curable inks that cure when exposed to ultraviolet light. Security printing and food packaging are two examples of the niche markets that employ these inks.

Applications in Different Industries

Food and Beverage Industry

Printing out codes and markings is an important part of the food and drink industry's process for compliance with regulations and protecting consumers. Products may have lot numbers, expiry dates, and other traceability information printed using these. Inks that dry quickly are necessary to prevent smearing on assembly lines and must also meet food safety standards.


The pharmaceutical sector requires pinpoint accuracy to stay on the right side of the law. TIJ technology is commonly used by coding and marking printers in this field for the high-resolution printing of batch numbers, expiry dates, and barcodes. Sterilization is a common technique for pharmaceutical items. Thus, the ink has to be chemically resistant and long-lasting.

Electrical Devices

Due to its accuracy and durability, laser marking is widely used in the electronics sector. The purpose of coding and labeling is to facilitate component tracing, provide quality control, and forestall counterfeiting. The codes must be durable enough to resist extreme heat and rough treatment.

Automobile Market

Automotive marks must be tough and withstand high temperatures, lubricants, and fuels. The long-lasting nature of laser marking and CIJ printing makes them popular choices. These printers are essential for quality control and traceability since they stamp components with production data and serial numbers.

Packaging Sector

Coding and marking printers deal with various materials and forms in their work. TTO is a common choice for flexible packaging, whereas CIJ and DOD printers are preferred for their efficiency and adaptability in marking various kinds of packaging.

Common Problems and Their Solutions

Even with routine servicing, coding, and marking, printers could develop problems. Toner jams, sloppy prints, and computer glitches are typical issues.

Ink Clogs

Dried ink in the nozzles is a common cause of ink clogging. You may avoid this problem by cleaning your printer regularly and using the correct ink.

Poor Print Quality

The use of mismatched inks or substrates and faulty printer settings may lead to poor print quality. You can fix the issue using the printer's suggested inks and adjusting the alignment and calibration.

System Errors

Software problems or hardware failures may both lead to system errors. These issues may often be fixed by simply resetting the printer or installing the latest software. You should seek advice from the manufacturer or a skilled technician for more intricate problems.

Bottom Line

Finally, to keep coding and marking printers running well, it is essential to maintain them often and fix any problems that may arise. To save money and time and keep production running smoothly, it helps to know typical issues and how to fix them.


Made with top-notch materials and advanced tech, coding and marking printers from Arojet boast a reasonable design, high-quality performance, consistent quality, and enduring durability.


Among consumers, industrial coding and marking printers have a stellar reputation for dependability and quality. The products and the after-sale services Arojet offers are of the highest quality, so why not check it out?

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