Kaoru Hamada

Title: Kaoru Hamada: Innovator in Inkjet and Thermally Sensitive Technologies

Introduction

Kaoru Hamada, based in Tokyo, Japan, is a notable inventor recognized for his significant contributions to the fields of inkjet and thermally sensitive recording mediums. With a total of 28 patents to his name, Hamada's innovations demonstrate a blend of creativity and technical expertise, influencing the development of advanced recording technologies.

Latest Patents

Among his recent patents, Hamada has developed an innovative inkjet recording medium that features a specialized coating layer. This layer, containing a pigment and a binder, is applied to the surface of a base material. The process includes pressing the coating layer onto a heated mirror-finished surface to dry, creating an ink-absorbing layer through a cast coating method. Notably, the pigment used contains colloidal silica, with a primary particle diameter ranging from 10 nm to 100 nm, and a secondary particle diameter to primary particle diameter ratio between 1.5 and 3.0.

Another significant invention is his thermally sensitive recording medium. This patent involves an undercoating layer composed of a pigment and binder, alongside a thermally sensitive color-developing layer. The latter features a colorless or pale-colored basic leuco dye and a color-developing agent that reacts with the dye. The undercoating layer is enhanced with a water-retention agent and a pigment with specific oil-absorbing capacity, while the coating’s solids concentration ranges from 25% to 45%.

Career Highlights

Hamada has held positions at prominent companies, including Nippon Paper Industries Co., Ltd. and Kao Corporation. His comprehensive experience in these leading firms has significantly influenced his invention journey, allowing him to contribute effectively to technological advancements in his field.

Collaborations

Throughout his career, Hamada has collaborated with talented professionals such as Tomoaki Nagai and Yoshihide Kimura. These partnerships have facilitated the fusion of ideas and expertise, leading to the successful development of his innovative patents.

Conclusion

Kaoru Hamada stands out as a prominent figure in innovation within the recording medium industry. His impressive portfolio of 28 patents not only reflects his dedication to advancing technology but also underscores the potential impact of his work in everyday applications. As he continues to contribute to the field, his inventions pave the way for future developments in recording technology.