Company Filing History:
7 out of 75 
6 out of 5,232 
1 out of 30 Years Active: 1992-2000
Title: Takao Yorifuji: Innovator in Electronic Copying Technology
Introduction
Takao Yorifuji is a notable inventor based in Higashiyamato, Japan. He has made significant contributions to the field of electronic copying technology, holding a total of seven patents. His work primarily focuses on developing devices that enhance the functionality and efficiency of image forming apparatuses.
Latest Patents
One of his latest patents includes a photosensitive drum casing for an electronic copying machine. This innovative developing device features an image forming unit and a color image forming apparatus. The design incorporates a developing roller positioned at the lower opening of a toner hopper, which contacts a photosensitive drum to create a developing portion. The hopper is designed to store nonmagnetic toner and is equipped with a toner stirring member and a toner feed roller that maintains press-contact with the developing roller. Additionally, a doctor blade interacts with the developing roller's circumferential surface, while a conductive scooping sheet aids in managing residual toner. The application of a sheet bias voltage ranging from 0V to -250V effectively weakens the attaching force of residual toner, facilitating its removal by the feed roller.
Career Highlights
Throughout his career, Takao Yorifuji has worked with prominent companies such as Casio Electronics Manufacturing Co., Ltd. and Casio Computer Co., Ltd. His experience in these organizations has allowed him to refine his skills and contribute to advancements in electronic copying technology.
Collaborations
Takao has collaborated with notable coworkers, including Noriki Ono and Moriyuki Kouroku. Their combined expertise has played a crucial role in the development of innovative solutions in the field.
Conclusion
Takao Yorifuji's contributions to electronic copying technology through his patents and collaborations highlight his role as a significant innovator in the industry. His work continues to influence advancements in image forming apparatuses, showcasing the importance of innovation in technology.