77kW 350mm Roller Hearth Furnace for Thermal Print Head TPH Sintering Copper Annealing

Ultimate Purity and Precision for Unmatched Print Consistency and Longevity

At the heart of every high-resolution thermal print head lies a meticulously patterned gold conductor, which serves as the vital pathway for electrical current to energize the heating resistors. The integrity of this circuit directly dictates print quality, speed, and operational life. Tailord's High-Cleanliness Roller Hearth Furnaces are engineered to the highest standards of purity and thermal control, providing the pristine environment required to sinter gold paste into a flawless, low-resistance, and highly adhesive electrode, ensuring razor-sharp print definition and reliability over millions of cycles.

Key Applications & Process Advantages for TPH Gold Paste Sintering:

1. Zero-Contact Processing for Pristine Surfaces: The roller hearth design transports substrates without physical contact on the top surface, eliminating the risk of particulate generation or pattern damage from a mesh belt. This is paramount for preserving the integrity of the fine-line gold circuitry and preventing micro-scratches that could become failure points.

2. Ultra-Clean Chamber with Class 1000 (or better) Standards: The furnace is constructed with materials and a sealing system that minimizes particle shedding. Coupled with a positive-pressure, high-purity nitrogen atmosphere, it maintains an ultra-clean environment throughout the process, preventing any contamination that could cause electrical shorts or degraded performance.

3. Optimized for Fine-Line Geometry Preservation: The uniform heating and stable transport of the roller hearth prevent any distortion or sagging of large, thin glass or ceramic substrates. This is critical for maintaining the exact geometry of micron-scale gold traces, which directly impacts current density distribution and print uniformity.

4. Superior Electrical Conductivity and Low Contact Resistance: The precise thermal profile ensures the gold sinters to near-theoretical density, maximizing conductivity. This minimizes energy loss as heat and ensures uniform power delivery to each individual heating resistor, which is fundamental for consistent dot density and grayscale reproduction.

5. Exceptional Adhesion to Glazed Ceramic/Alumina Substrates: The firing profile is meticulously developed to promote strong chemical bonding between the gold and the specialized glazed surface of the TPH substrate. This prevents delamination under the constant thermal stress of heating and cooling cycles during printing.

6. High-Volume Manufacturing for Demanding Industries: Designed for seamless integration into automated production lines, our Roller Hearth Furnaces support the massive output required for the POS, medical graphing, and logistics labeling industries, ensuring every print head meets exacting performance standards.

7. Precise Atmosphere Control for a Bright, Oxide-Free Finish: A tightly controlled nitrogen atmosphere with optional hydrogen purifier integration ensures the gold sinters to a perfectly bright, oxide-free surface. This is essential for achieving excellent wire bonding capability and long-term corrosion resistance.

8. Unmatched Temperature Uniformity for Print Consistency (±2°C): With superior temperature uniformity across the entire roller width, we guarantee that every heating resistor on the substrate is serviced by an electrode with identical electrical properties. This eliminates banding and is the foundation for flawless, consistent print quality across the full page width.

9. Minimized Substrate Warpage for Precision Alignment: The combination of uniform top and bottom heating and full substrate support prevents warping of large-format TPH substrates. This is crucial for maintaining precise alignment between the heating elements and the platen roller in the final assembly.

10. Enabling High-Speed, High-Resolution Printing: A perfectly sintered gold electrode structure ensures fast electrical response and efficient heat transfer to the resistor. This technology is a key enabler for the next generation of high-speed, high-resolution thermal printers used in industrial and medical imaging.

Partner with Tailord to define the standard of print perfection. Our high-cleanliness sintering solutions provide the flawless electrical foundation for thermal print heads that deliver unparalleled reliability, clarity, and speed.

• Settters
• Profiling test thermocouple
• Exhaust gas treatment system
• UPS Power Supply