Keizo Kitamura

Title: Keizo Kitamura: Innovator in Electrophotographic Technology

Introduction

Keizo Kitamura is a notable inventor based in Yamatokoriyama, Japan. He has made significant contributions to the field of electrophotography, holding a total of 3 patents. His work focuses on improving the efficiency and functionality of image forming apparatuses.

Latest Patents

One of Kitamura's latest patents is for an electrophotographic developing unit. This invention features a magnetic member positioned downstream in relation to the developing sleeve's rotational direction. The design ensures that the magnetic member's influence does not affect the magnetic field of the developing magnetic pole. When the magnetic member's N pole faces the developing sleeve, it weakens the developer's attraction to the sleeve's surface. Conversely, when the S pole faces the sleeve, the developer is magnetized to repel from the sleeve. This innovative arrangement allows for an unstable adhering state of the developer, facilitating its easy drop-off after passing the developing position.

Another significant patent is for an image forming apparatus that executes discharging exposure after shutdown. This apparatus includes a photosensitive drum that holds an electrostatic latent image, which is rotated by a motor. It features charging means to establish a predetermined polarity and potential on the drum's surface, exposing means to form the latent image, and developing means to develop the image. Notably, after a motor shutdown due to a malfunction, the apparatus utilizes the inertial rotation of the drum to perform discharge exposure on the remaining charge regions.

Career Highlights

Keizo Kitamura is currently employed at Sharp Kabushiki Kaisha Corporation, where he continues to innovate in the field of electrophotography. His work has significantly impacted the efficiency of image forming technologies.

Collaborations

Throughout his career, Kitamura has collaborated with talented individuals such as Takahiro Bito and Syouichi Fujita. These collaborations have contributed to the advancement of technology in their field.

Conclusion

Keizo Kitamura's contributions to electrophotographic technology through his patents and work at Sharp Kabushiki Kaisha Corporation highlight his role as a key innovator in the industry. His inventions continue to influence the development of efficient image forming apparatuses.