Types of Thermal Transfer Printers

Introduction

Thermal transfer printers play a crucial role in various industries, and it’s essential to comprehend the distinctions among different printing technologies. Let’s delve into the characteristics of flat-head printers, near-edge printers, and Thermal Transfer Overprint (TTO) printers.

Flat-Head Printers

Flat-head printers are equipped with traditional printheads, offering image resolutions typically ranging from 200 to 600 DPI, with some models reaching up to 1200 DPI. These printers use ribbons coupled with labels for a brief distance before the peel point, achieving up to 12 IPS speeds. Certain models can even reach 20 IPS with the right ribbon. These printers are known for their reliability and are suitable for various applications.

Near-Edge Printers

In contrast, near-edge printers utilize floating printheads, allowing them to operate at speeds exceeding 26 IPS, with some combinations reaching up to 55 IPS. The ribbons are joined with labels only briefly before the peel point, requiring a special formulation for rapid ink release. The floating printhead eliminates the need for adjustments based on media thickness. However, the image resolution is slightly lower, ranging from 200 to 300 DPI. Near-edge printers are favored for their high-speed capabilities.

Thermal Transfer Overprint (TTO) Printers

TTO is a method where heat transfers ink from a Thermal Transfer Ribbon to a flexible substrate like food, beverage, and medication packaging. This technology is designed for flexible packaging and is commonly used for barcodes and variable information. TTO printers operate in-line at high speeds of 20 IPS, demanding specific Thermal Transfer Ribbons to ensure optimal performance. Choosing the right ribbon is critical for quality printing on flexible materials.

Extending Printhead Life

To prolong the life of the printhead, it’s crucial to use quality ribbons properly. Factors contributing to printhead wear include excessive heat, direct contact with a rough substrate, and pollution. Using a ribbon with high print sensitivity at the lowest necessary heat settings, ensuring the ribbon is wider than the substrate, and employing an anti-static ribbon can mitigate printhead issues. Maintaining the printhead’s health is essential for preserving print quality and barcode scannability.

Selecting the Right Thermal Transfer Ribbons

Thermal Transfer Ribbon selection is critical based on the printhead type. Different ribbons are needed for flat-head and near-edge printers, and TTO printers have their specific requirements. The DNP ribbon finder can assist in choosing the appropriate ribbon based on printer type and printing speed. Additionally, printers may specify whether the ink should be on the outside or inside of the ribbon, providing customization options.

Thermal Transfer vs. Direct Thermal

Two common printing systems are Thermal Transfer and Direct Thermal. While many printers support both systems using the same thermal printhead, they have distinct applications. Direct Thermal is suitable for using heat-sensitive paper for short-lived variable information, like receipts. In contrast, Thermal Transfer is preferred for information requiring longevity. Understanding the differences and advantages of these systems is crucial for selecting the right technology for specific printing needs.

Conclusion

In conclusion, each printing technology serves specific purposes, and understanding their characteristics is essential for making informed decisions in various printing applications.