Hiromichi Yamada

Title: The Innovative Journey of Hiromichi Yamada

Introduction

Hiromichi Yamada, an accomplished inventor based in Ibaraki-ken, Japan, has made significant contributions to the field of printing technology. With a total of three patents under his name, Yamada's work showcases his dedication to innovation and improvement in emulsion inks for stencil printing.

Latest Patents

Yamada's latest patents focus on developing water-in-oil (W/O) emulsion inks specifically designed for stencil printing. The first patent emphasizes an emulsion ink that prevents pigment aggregation, providing excellent ink fixability and maintaining high printing density even after numerous prints. The ink's formulation includes a carefully calibrated ratio of the water phase to liquid components of the oil phase, optimizing its performance at 23°C. This innovation allows for the inclusion of organic pigments with irregular shapes and larger average sizes, such as copper phthalocyanine blue and diaxazine violet.

In another related patent, Yamada introduces an emulsion ink that exhibits minimal viscosity changes over time, ensuring stable prints throughout its use. This formulation incorporates a resinous component with free carboxylic acid groups or higher fatty acids, paired with divalent or trivalent metal salts to enhance the emulsion's stability. By leveraging these materials, Yamada has contributed to the reliability and efficiency of printing processes.

Career Highlights

Yamada currently works at Riso Kagaku Corporation, a company renowned for its dedication to innovation in printing solutions. His expertise in developing advanced emulsion inks has positioned him as a key player within the organization. Throughout his career, Yamada has demonstrated a commitment to enhancing the quality and performance of printing materials, making a lasting impact on the industry.

Collaborations

In his journey as an inventor, Yamada has collaborated with notable coworkers, including Sadanao Okuda and Hiroyuki Ogawa. These partnerships have fostered a creative environment, allowing for the exploration and execution of groundbreaking ideas in ink technology.

Conclusion

Hiromichi Yamada's innovative contributions to the realm of stencil printing are evident through his patents and collaborations. His work not only advances the technology used in the printing industry but also sets a benchmark for quality and efficiency. As an inventor, Yamada continues to inspire and lead the way towards new horizons in printing innovation.