Toshihiko Yasui

Title: Toshihiko Yasui: Inventor in Laser Marking and Label Printing

Introduction

Toshihiko Yasui is an inventor associated with Yokohama, Japan. His work includes technologies for laser-based label printing and marking, with a focus on producing clear images while controlling printing errors and unwanted background coloration. He is credited with 3 patents.

Latest Patents

One of Yasui’s listed patents, “Label Printing Apparatus for Laser Printing a Heat-Sensitive Color,” describes a system that feeds labels to designated printing positions and uses a sensor to detect whether a label is present. When the sensor confirms a label, a laser prints information and the apparatus generates a shot signal. A controller monitors the intervals between shot signals and issues an error signal if an interval falls outside a specified period. The design aims to simplify control, avoid unnecessary operation, and reduce defective prints.

Another listed patent, “Laser Marking and Printing Ink Therefor,” concerns a non-destructive method for marking a thermosensitive color-forming layer. The ink contains a leuco dye, an acidic color developer, and at least one background-color formation inhibitor, such as a water-soluble amino acid, an inorganic-acid ammonium salt, a pH buffer, or water. The method is intended to produce high-contrast color images at low laser energy and high speed while minimizing unwanted background coloration.

Career Highlights

Yasui’s listed professional affiliations include Dainippon Ink and Chemicals, Incorporated, and Kirin Beer Kabushiki Kaisha. His patent work reflects applications of laser technology to printing and marking processes.

Collaborations

Yasui’s listed coworkers include Yoshio Takimoto and Norio Endo.

Conclusion

Toshihiko Yasui’s inventions address practical challenges in laser printing and marking, including reliable label detection, print-error control, and high-contrast image formation.