Company Filing History:

13 out of 28,605

Ricoh Company, Ltd.

Years Active: 1986-2017

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14 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 9608410 - Surface-emitting light source and laser apparatus (2017-03-28),

2. 9228825 - Positional change measurement device, positional change measurement method, and image forming apparatus (2016-01-05),

3. 8965244 - Image forming apparatus, optical print head, and process cartridge with plates for positioning image bearing member and developing member (2015-02-24),

4. 8508808 - Optical scanning and image forming apparatus with a free-sliding unit for thermal expansion (2013-08-13),

5. 5521679 - Image forming apparatus having clamp for conveying a recording medium (1996-05-28),

6. 5315323 - Color image forming apparatus with means for biasing a recording head (1994-05-24),

7. 5264273 - Structure of a recording medium for an electrostatic recorder (1993-11-23),

8. 5245396 - Color image forming apparatus for use with a recording medium having a (1993-09-14),

9. 5202534 - Developing apparatus using a liquid developer and having a system for (1993-04-13),

10. 5172180 - Image forming equipment with variable stepwise drive means operation (1992-12-15),

11. 4968134 - Overhead projector (1990-11-06),

12. 4924260 - Exposure system of image forming apparatus (1990-05-08),

13. 4640611 - Copying method for bookbinding (1987-02-03),

14. 4592651 - Copier with bookbinding function (1986-06-03),

Title: Kenichi Shimizu: Innovator in Light Source Technology

Introduction

Kenichi Shimizu is a prominent inventor based in Kawasaki, Japan. He has made significant contributions to the field of optical technology, holding a total of 14 patents. His work primarily focuses on surface-emitting light sources and advanced measurement devices.

Latest Patents

One of his latest patents is for a surface-emitting light source and laser apparatus. This invention includes a substrate with a light-emitting region containing multiple light-emitting points, surrounded by a non-light-emitting region. It also features a lens array with several lenses and a non-lens region. The substrate and lens array are bonded at the non-light-emitting and non-lens regions, ensuring that the light-emitting points align with the lenses. The lens array is designed to have a linear expansion coefficient that does not exceed that of the substrate.

Another notable patent is for a positional change measurement device, method, and image-forming apparatus. This device aims to measure the positional change of a dynamic surface using speckle patterns while minimizing the impact of temperature fluctuations in the measurement environment. It consists of a light source, an illuminating optical system, an imaging optical system, and an image pickup device that captures speckle patterns. The device also includes compensation means to adjust for length fluctuations caused by temperature changes.

Career Highlights

Throughout his career, Kenichi Shimizu has worked with notable companies such as Ricoh Company, Ltd. and Polaroid Corporation. His experience in these organizations has contributed to his expertise in optical technologies and innovations.

Collaborations

Some of his coworkers include Shigeru Suzuki and Kazuaki Iizuka. Their collaboration has likely played a role in advancing the projects they have worked on together.

Conclusion

Kenichi Shimizu is a distinguished inventor whose work in light source technology and measurement devices has made a significant impact in the field. His innovative patents reflect his dedication to advancing optical technology and improving measurement accuracy.

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