Naoki Tanaka

Title: Naoki Tanaka: Patents in Ink and Recording-Sheet Technology.

Introduction

Naoki Tanaka is an inventor associated with Suwa, Japan. His patent work includes ink compositions and recording sheets designed to improve print quality and durability. He holds 4 patents.

Latest Patents

Tanaka’s listed patents address ink fixation and the performance of recording sheets.

Ink Composition Capable of Realizing Print with Improved Fixation

This invention describes an ink composition designed to produce well-fixed prints, including on smooth coated paper. It also aims to prevent clogging and precipitate formation during inkjet printing. The composition includes a copolymer of butyl acrylate, methyl methacrylate, and acrylic acid.

Recording Sheet and Method of Recording Image Using Such Recording Sheet

This invention describes a recording sheet with a base and a receptive layer on at least one surface. The layer combines a water-absorbent copolymer, which takes up ink, with a water-resistant graft copolymer whose main chain is polyvinyl alcohol. The design aims to reduce discoloration, blurring, and irregularities in gloss or luster. The patent describes a water-absorbent copolymer of acrylic acid and vinyl alcohol, and specifies a weight ratio of 20/80 to 80/20 for the two copolymers, with 30/70 to 70/30 preferred.

Career Highlights

The supplied information associates Tanaka with Matsumoto Dental College and Injex Corporation. These affiliations provide context for his professional background, while his listed patents focus on printing materials and recording media.

Collaborations

Hiroshi Ohtsubo and Michio Ito are identified as Tanaka’s coworkers.

Conclusion

Naoki Tanaka’s patent portfolio highlights technical approaches to improving ink fixation and the durability and appearance of printed images.