Yoshihiro Nakashima

This inventor holds 14 USPTO granted patents. Top assignee: Seiko Epson Corporation. Active years: 1996-2007.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Yoshihiro Nakashima. Retrieved from https://idiyas.com/inventor/yoshihiro-nakashima-8a65sm7y

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Calculating rank

USPTO Granted Patents = 14

% Patents Active = 64.3

Average Co-Inventor Count = 3.3

ph-index = 7

Forward Citations = 116(Granted Patents)

Location History:

Nagano, JP (1996 - 2002)
Nagano-Ken, JP (2004 - 2007)

Company Filing History:

14 out of 34,305

Seiko Epson Corporation

patents

Years Active: 1996-2007

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14 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 7260336 - Image forming apparatus and image forming method for performing density control of toner images (2007-08-21),

2. 7072597 - Image forming apparatus and image method for forming toner images with optimized patch image density (2006-07-04),

3. 6821701 - Toner and image forming apparatus (2004-11-23),

4. 6811942 - Toner and image forming apparatus (2004-11-02),

5. 6336022 - Developing unit (2002-01-01),

6. 6295433 - Developing unit having a conveying fin for loading a supply roller with toner (2001-09-25),

7. 6226484 - Developing unit using specific developer composition (2001-05-01),

8. 6198893 - Image forming apparatus having a plurality of developing units (2001-03-06),

9. 6192209 - Developing unit (2001-02-20),

10. 6163674 - Developing unit having developing roller with restraining blade (2000-12-19),

11. 6151474 - Developing unit using elastic supply roller (2000-11-21),

12. 6094554 - Developing unit having developing roller with specific side surface (2000-07-25),

13. 5655197 - Developing device (1997-08-05),

14. 5557060 - Developing device (1996-09-17),

Title: Yoshihiro Nakashima: Image-Forming Inventions

Introduction

Yoshihiro Nakashima is an inventor associated with Nagano, Japan, and Seiko Epson Corporation. His patent work includes technologies for improving density control in image-forming systems. His portfolio includes 14 patents.

Latest Patents

Nakashima’s listed patents focus on controlling toner-image density by forming and measuring patch images. Both describe optimizing a density-control factor based on how patch-image density changes when that factor is varied. They also describe correcting detected density measurements using information about the image carrier acquired before the patches are formed, helping reduce detection errors.

The titles provided are “Image Forming Apparatus and Image Forming Method for Performing Density Control of Toner Images” and “Image Forming Apparatus and Image Method for Forming Toner Images with Optimized Patch Image Density.” Together, these inventions address more reliable density adjustment in image-forming apparatuses.

Career Highlights

Nakashima’s listed inventions concern practical improvements to toner-image density control. The described methods use measured patch images and image-carrier information to support more accurate adjustment of printing conditions.

Collaborations

Nakashima is associated with Seiko Epson Corporation. His listed coworkers include Yukio Takayama and Hidenori Kin.

Conclusion

Yoshihiro Nakashima’s patent work, as represented by the provided information, centers on improving the accuracy of toner-image density control in image-forming technology.

Profile summary based on public USPTO records.

Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]