Company Filing History:

14 out of 28,584

Ricoh Company, Ltd.

patents

1 out of 25,577

Sharp Kabushiki Kaisha Corporation

patents

Years Active: 2007-2016

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15 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 9298127 - Developing device and image forming apparatus including same (2016-03-29),

2. 8977150 - Image forming apparatus including a controller configured to regulate a potential difference between a photoconductor and a developing member (2015-03-10),

3. 7907871 - Image forming apparatus (2011-03-15),

4. 7903993 - Image forming apparatus (2011-03-08),

5. 7822356 - Image forming apparatus (2010-10-26),

6. 7796912 - Image forming method and apparatus which uses alternating voltage to form an electric field for moving toner (2010-09-14),

7. 7792463 - Image forming apparatus including a brush member to temporarily capture toner (2010-09-07),

8. 7751753 - Cleanerless image forming apparatus (2010-07-06),

9. 7738803 - Image forming method and apparatus for effectively charging an image carrier (2010-06-15),

10. 7725054 - Electrifying apparatus, a processing unit, and an image formation apparatus (2010-05-25),

11. 7697875 - Development device for developing an electrostatic latent image formed on an image carrying member into a visible image (2010-04-13),

12. 7693459 - Charging device for charging a surface of a latent image bearing member and an image forming apparatus including the charging device (2010-04-06),

13. 7684732 - Process unit and image forming apparatus including the same (2010-03-23),

14. 7664433 - Cleaning of a charging member in an image forming apparatus (2010-02-16),

15. 7263317 - Particle discharge apparatus and image forming apparatus (2007-08-28),

Title: The Innovative Contributions of Yoshio Sakagawa

Introduction

Yoshio Sakagawa is a prominent inventor based in Hyogo, Japan, known for his significant contributions to the field of imaging technology. With a total of 15 patents to his name, he has made remarkable advancements that have influenced the development of various imaging devices.

Latest Patents

Sakagawa's latest patents include a developing device and an image forming apparatus. The developing device features a developer bearer that bears developer on its surface and is rotatable in both forward and reverse directions. A regulation member is positioned to control the amount of developer on the bearer. During non-development periods, the developer bearer rotates in reverse after completing a forward rotation, ensuring that the total forward rotation exceeds the total reverse rotation. The image forming apparatus includes a rotatable photoconductor and a controller that regulates the potential difference between the photoconductor and a developing member. This apparatus utilizes a charging unit and an exposure unit to manage the electrical potential at the photoconductor, enhancing the efficiency of toner application.

Career Highlights

Throughout his career, Sakagawa has worked with notable companies such as Ricoh Company, Ltd. and Sharp Kabushiki Kaisha Corporation. His experience in these organizations has allowed him to refine his skills and contribute to cutting-edge technologies in imaging.

Collaborations

Sakagawa has collaborated with talented individuals in the field, including Yuji Nagatomo and Tetsumaru Fujita. These partnerships have fostered innovation and have led to the successful development of various projects.

Conclusion

Yoshio Sakagawa's work in imaging technology has left a lasting impact on the industry. His innovative patents and collaborations highlight his dedication to advancing technology and improving imaging devices.

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