Location History:
- Nara, JP (2000)
- Ikoma, JP (2005 - 2006)
Company Filing History:
Years Active: 2000-2006
Title: Hiroko Ishibashi: Innovator in Electrophotographic Technology
Introduction
Hiroko Ishibashi is a prominent inventor based in Ikoma, Japan. She has made significant contributions to the field of electrophotographic technology, holding a total of 4 patents. Her innovative work focuses on improving the performance and durability of photoreceptors used in color image forming apparatuses.
Latest Patents
One of her latest patents is for a color image forming apparatus that features multiple image forming stations for various development colors, including black. Each station is equipped with a photoreceptor that contains a charge transport layer made from a blend of at least two types of resins. The unique aspect of this invention is that the blended ratio of binder resins for the black photoreceptor differs from that of the other colors, resulting in enhanced abrasion resistance for the black photoreceptor. This design allows for the simultaneous use of all photoreceptors for both black and color images.
Another notable patent is for an electrophotographic photoreceptor and its production method. This invention controls the increase of voltage (VL) to below 15 V by adjusting the content ratio of charge transporting materials within a specific range. The photoreceptor is designed to maintain image concentration while minimizing the reduction in quality. The production method involves using a dip coating liquid that ensures the ionization potential difference between materials remains below 0.25 eV, further enhancing the photoreceptor's performance.
Career Highlights
Hiroko Ishibashi is currently employed at Sharp Kabushiki Kaisha Corporation, where she continues to develop innovative technologies in the field of electrophotography. Her work has significantly impacted the efficiency and quality of image forming technologies.
Collaborations
Throughout her career, Ishibashi has collaborated with notable colleagues, including Yoshihide Shimoda and Kazushige Morita. These collaborations have contributed to the advancement of her research and the successful development of her patents.
Conclusion
Hiroko Ishibashi is a trailblazer in the field of electrophotographic technology, with a focus on enhancing the performance of photoreceptors. Her innovative patents reflect her commitment to advancing imaging technology and improving the quality of color image formation.