Continuous Inkjet Printers / Case Coder
Coding on Plastic Parts in Modern Manufacturing
Coding on plastic parts ensures traceability, authentication, and quality control, but traditional methods, such as stamping and laser engraving, often come with hidden maintenance costs, downtime, and smudging. However, inkjet technology has transformed the process, making coding on plastic parts more efficient and cost-effective.
The KEYENCE MK-G Series stands out as the world’s first continuous inkjet printer with self-troubleshooting capabilities, eliminating complex maintenance requirements. With advanced sensor technology, it performs autonomous maintenance, reducing downtime and streamlining operations for manufacturers.
Challenges in Coding and Marking on Plastic Parts
Coding and marking on plastic parts are essential in industrial manufacturing, particularly in packaging, automotive, aerospace, and electronics. However, factors such as high temperatures, ink consistency, and production conditions present unique challenges in marking plastic surfaces.
- Temperature-Related Printing Challenges: High-temperature manufacturing environments can make it difficult for traditional inkjet printers to ensure proper ink adhesions, causing smudged or illegible codes and traceability issues.
- Ink Clogging Issues: Pigmented ink provides sharp, high-contrast markings on plastics but is prone to clogging printer nozzles, causing print inconsistencies and downtime.
- Device Vibrations: Vibrations in plastic manufacturing can disrupt printing accuracy and consistency, leading to misaligned or unreadable codes on plastic surfaces, a common issue with traditional printers.
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Why Choose the MK-G Series CIJ for Plastic Parts Coding
The MK-G Series continuous inkjet printer addresses these challenges by delivering high-quality, uninterrupted lot coding through advanced self-monitoring technology and automation.
Self-Troubleshooting Capabilities
The MK-G Series CIJ automatically detects and resolves issues, eliminating the need for complex manual maintenance. Its self-cleaning system prevents clogs, ensuring consistent printing, reducing downtime, and boosting productivity.
Using the MK Dock enables self-diagnosis and cleaning to ensure stable startup.
Particle state:
If the optimum ink state is not maintained, the inside of the head may become dirty, and print quality may deteriorate.
Ink Sensing for Extreme Conditions
The printer monitors ink particles 10 times per second, ensuring proper adhesion even in extreme temperatures, guaranteeing high-quality, reliable printing, and avoiding disruptions.
Less-than-optimal state of particles
Optimal particle state
Smart Startup and Sleep Mode
These features reduce the risk of clogs and maintain high-quality prints by automatically managing the printer's activity, minimizing downtime during production.
Durable Solvent-Based Ink
The ink is specially designed for plastic materials, offering resistance to chemicals, extreme temperatures, and tough conditions, ensuring reliable codes that last.
Precision on Various Surfaces
The MK-G Series can print on curved, uneven, or smooth plastic surfaces, making it adaptable for a wide range of lot coding applications.
Intuitive Touch Panel
An intuitive interface simplifies setup and operation, allowing for hassle-free lot coding and minimizing operator errors.
Compact, Space-Saving Design
Optimized for production lines with limited space, offering high-performance printing in a small footprint.
Versatile Customization
Supports adjustable print height, font sizes, styles, and barcodes, ensuring precise branding and compliance with regulatory standards.
5-12 dots
14-32 dots
Four-line printing
Logotypes
Unique-character languages
Barcode
2D codes
Streamline production with the MK-G Series CIJ printer. Contact us to learn more!
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FAQs About Coding on Plastic Parts
How Does Coding and Marking on Plastic Parts Improve Traceability and Compliance in Automotive Manufacturing?
Coding on plastic parts acts as a unique identifier for each component. This coding on automotive and aerospace parts allows for efficient tracking, tracing, and quality control throughout the supply chain while ensuring industry standards are met.
How Does the MK-G Series Printer Ensure High-Quality Coding on Uneven Plastic Surfaces?
The MK-G Series uses advanced CIJ technology for efficient, non-contact printing on plastic components. Its micro-nozzle ensures precise, high-quality prints, perfect for small characters and 2D codes, even on uneven surfaces.
How Does the MK-G Series Printer Simplify CIJ Maintenance to Improve Efficiency and Reduce Downtime in Coding Plastic Parts?
The MK-G Series printer boosts efficiency and reduces downtime with its automatic cleaning function. Whenever the printer shuts down—intentionally or due to a power outage—it runs a cleaning cycle. This eliminates the need for manual cleaning, prevents clogs, and ensures smooth operation.
How Does the MK-G CIJ Printer Support Consistent Code Printing on Plastic Parts Under Varying Temperature and Humidity Conditions?
The MK-G Series CIJ printer performs reliably in diverse conditions with an IP55 rating for dust and water protection, which is ideal for manufacturing environments with varying temperatures and humidity. Its advanced sensor technology ensures precise, consistent code printing on plastic parts, even in fluctuating conditions.
How Does the MK-G Series Handle High-Speed Production Lines Without Compromising Print Quality on Plastic Parts?
The MK-G Series delivers high-speed production, printing up to 2,525 characters per second. Advanced CIJ technology ensures precise, consistent marking at rapid speeds without sacrificing quality or clarity.
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Related Downloads

This guide explains continuous inkjet (CIJ) printer applications together with pictures and illustrations. It contains many installation examples in various industries divided into food, medicine, and cosmetics; electrical machinery and electronics; and automotive, metal, and others. These examples show printing on targets specific to each industry.