A clear explanation of the protrusion reduction test that solved issues such as poor molding and reduced shot count.
"Troubleshooting for Optical Disc Stampers" introduces a series of tests aimed at reducing "protrusions" in optical disc stampers while maintaining productivity. When polishing the back surface of optical discs, "protrusions" are cited as a cause of molding defects, signal surface bulging, and reduced shot counts. Through various processes such as finishing electroforming, reviewing filters, and selecting pit prevention agents, a long-term test over six months under final conditions resulted in a significant reduction in the occurrence of "protrusions," making it possible to address them with coarse polishing. [Contents] ■ Stampers made by nickel electroforming ■ Manufacturing process of stampers ■ Back surface protrusion defects ■ Protrusion reduction tests *For more details, please refer to the PDF document or feel free to contact us.
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Overview of Projection Reduction Testing ■ Finishing Electroforming Conditions / Results ■ Ammonia Concentration Management ■ Gloss Agent Addition Test ■ Review of Filters ■ Analysis of Plating Solution Before and After Filter Installation ■ Selection of Pit Preventive Agents ■ Long-Run Test Under Final Conditions *For more details, please refer to the PDF document or feel free to contact us.
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For more details, please refer to the PDF document or feel free to contact us.
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GDLAB LLC will contribute to society by inducing innovation using surface modification technologies that do not yet exist in the world. GD Coating is a heat-resistant fluorine coating characterized by four features, achieved by the fusion of composite processes that form a chemical reaction layer, resulting in strong adhesion and coating power. ■ Heat resistance ■ Thin film ■ Transparent film ■ Durability and performance exceeding fluorine Currently, it is being utilized for processing mirror finishes, precision molds, the interiors of fine tubes, and materials such as resin, rubber, and glass. Additionally, we provide high-aspect electroformed components used in semiconductor-related parts, medical device components, and micro molds. We have achieved thick electroforming of precious metals other than conventional Ni, Ni alloys, and copper using electroforming technology. We also offer ultra-functional coatings and wafer plating equipment, so please feel free to contact us.