Company Filing History:
2 out of 3,106 
2 out of 1,252 
Years Active: 1984-1992
Title: Keisuke Yamaguchi: Innovator in Imaging Technology
Introduction
Keisuke Yamaguchi is a notable inventor based in Hachioji, Japan. He has made significant contributions to the field of imaging technology, holding a total of 4 patents. His work primarily focuses on developing innovative solutions for image recording apparatuses.
Latest Patents
One of his latest patents is a developer container for an image recording apparatus. This toner container is designed to be detachably mounted to a developing unit of a copying apparatus. It contains fresh toner to be supplied to the developing unit while also storing used toner. The container features a partition plate that is slidably provided inside, which partitions the container into two sections: one for fresh toner and another for used toner. The design includes an outlet for fresh toner to exit and an inlet for used toner to enter. A transmission mechanism converts the rotation of a developer roller into a sliding motion of the partition plate, allowing the volume of the first section to decrease while the second section increases during operation.
Another significant patent is for a developer reservoir. This reservoir includes a flexible seal member that is separably bonded to the circumferential surface of an opening in the bottom portion of the reservoir body. The seal member is designed to separate from the reservoir body when a large pulling force is applied, ensuring effective sealing and functionality. Additionally, a sliding cover is included below the seal member, allowing for easy access.
Career Highlights
Throughout his career, Keisuke Yamaguchi has worked with prominent companies in the imaging industry, including Konica Corporation and Konishiroku Photo Industry Co., Ltd. His experience in these organizations has contributed to his expertise and innovative capabilities in developing imaging technologies.
Collaborations
Keisuke has collaborated with notable coworkers such as Masahiro Yoshino and Yoshinaga Mitsuhashi. Their combined efforts have led to advancements in imaging technology and the successful development of various patents.
Conclusion
Keisuke Yamaguchi is a distinguished inventor whose work has significantly impacted the field of imaging technology. His innovative patents and collaborations with industry leaders highlight his contributions to advancing imaging solutions.