Masato Ishikawa, an innovative inventor based in Inashiki-gun, Japan, has made significant contributions to the field of stencil printing through his pioneering work in emulsion inks. With a portfolio of five patents, he continually seeks to advance printing technology and improve the quality of printed materials.

Latest Patents

Among Masato Ishikawa's latest patents is the development of a water-in-oil (W/O) emulsion ink specifically designed for stencil printing. This innovative ink boasts impressive emulsion stability, rapid drying times, high printing density, and minimal blurring and seepage. The formulation features an oil phase and a water phase, with a water-soluble polymer and water-insoluble colorant integrated into the water phase. Notably, the water-soluble polymer is typically an acid anhydride containing olefin copolymer or vinyl copolymer, such as isobutylene-maleic anhydride copolymer or styrene-maleic anhydride copolymer. The oil phase includes essential solvents and emulsifiers, while the water phase can consist of a resin emulsion and/or a water-soluble resin.

In addition, he has developed a process and apparatus for preparing this emulsion ink. This method involves creating an aqueous dispersion of the water-insoluble colorant separately, which is then added to the oil phase for emulsification. This approach is particularly effective in producing emulsion inks of various colors, including mixed colors with multiple colorants, while maintaining a consistent formulation for the oil phase.

Career Highlights

Masato Ishikawa currently works for Riso Kagaku Corporation, a notable company in the printing technology industry. His innovative work has positioned him as an influential figure within the sector, with his patents paving the way for advanced stencil printing solutions.

Collaborations

Throughout his career, Ishikawa has collaborated with notable colleagues, including Sadanao Okuda and Takashi Suzuki. Together, they have worked on various projects that have contributed to enhancing the quality and efficiency of stencil printing technologies.

Conclusion

Masato Ishikawa's dedication to innovation in emulsion ink technology demonstrates his commitment to advancing the printing industry. His patents and collaborative efforts have led to significant improvements in the efficiency and quality of stencil printing. As he continues to develop new technologies, Ishikawa remains a key player in shaping the future of printing.

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