Nao Ishijima

Title: Nao Ishijima: Innovator in Ink Jet Technology

Introduction

Nao Ishijima is a prominent inventor based in Kanagawa, Japan. He is known for his contributions to ink jet technology, particularly in the development of methods and apparatuses that enhance the quality and efficiency of ink jet recording.

Latest Patents

Ishijima holds a patent for an innovative ink jet recording method and apparatus. This invention involves recording images on a medium using an aqueous ink combined with a reaction liquid that contains a reactant. The aqueous ink is formulated with a pigment that is dispersed through the action of a carboxylic acid group, along with resin particles and a water-soluble organic solvent. Notably, the pigment's particle size increases significantly—by 8.0 times or more—when it interacts with the aqueous reaction liquid. Additionally, the recording medium absorbs a limited amount of water, specifically 10 mL/m² or less, within the first 30 milliseconds of contact, as measured by the Bristow method.

Career Highlights

Nao Ishijima is associated with Canon Kabushiki Kaisha, a leading company in imaging and printing technology. His work at Canon has positioned him as a key player in advancing ink jet technology, contributing to the company's reputation for innovation in the field.

Collaborations

Ishijima has collaborated with notable colleagues, including Satoshi Takebayashi and Yoshitaka Torisaka. These partnerships have fostered a collaborative environment that encourages the exchange of ideas and expertise, further enhancing the development of innovative technologies.

Conclusion

Nao Ishijima's contributions to ink jet technology exemplify the impact of innovative thinking in the field of imaging. His patent reflects a significant advancement in recording methods, showcasing his dedication to improving the quality and efficiency of ink jet printing.