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Latest update: 22/01/2020 10:12:35

Midori Precisions Co., Ltd.

Our company develops and manufactures potentiometers and displacement sensors.

Our company has remained a pioneer in the development of analog displacement sensors since its inception 60 years ago, and has developed conductive plastic potentiometers (Green Pot), contactless potentiometers using a magnetoresistive element (Blue Pot), and contactless potentiometers using a Hall IC (Orange Pot). We are currently undertaking development of new “digital sensors (encoders),” and continue our history of being a proactive pioneer who always aspires to come up with innovative sensors ahead of the competition, be it in Japan or abroad.

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Sales Pitch

Potentiometers [windings products (W-w Pot)]
Overview
Our winding-type potentiometers combine a resistor element where copper-nickel or nickel-chromium resistance wires wound around the core or card with homogeneous tension are combined with the contact of a precious metal alloy to maintain precise and stable performance. They have thus been widely used not only in measuring instruments, but in various other applications as well.
Features
1. Small resistance temperature coefficient 
This is ±20 ppm/K with a resistance wire having a small temperature coefficient.
2. Flexible resistance design
Distances between windings and resistance wire diameters can be varied to produce a wide range of resistance values from several to hundreds of ohms.
3. Low contact resistance
Lower contact resistance than other resistor elements.
4. Intermediate tap
The intermediate tap can be pulled out from the desired location.
Encoder products (magnetic)
Overview
Magnetic encoders refer generically to encoders containing magnets and magneto-electric converting devices in the sensor. At Midori Precisions, as a rough classification, analog output products are referred to as potentiometers, while digital output products are called encoders. Magnetic encoders are non-contact, which makes them highly environmentally resistant and enables position detection with high precision and high reliability.
Features
- Resolution can be raised to very high levels with relatively smaller, inexpensive models because our products entail few physical constraints and lower rises in the numbers of constituent parts. 
- Unless the magnetic field is disturbed, these models can be used even in dusty or dirty environments
- These models incorporate fewer electronics parts than optical models, which makes it easy to reduce power consumption.

Other presentation

[Company strength]
As a pioneer in the development of analog displacement sensors since its inception 60 years ago, our company has developed a conductive plastic potentiometer (Green Pot), a contactless potentiometer using a magnetoresistive element (Blue Pot), and a contactless potentiometer using a Hall IC (Orange Pot). We are currently undertaking development of new “digital sensors (encoders)”, and continue our history of being a proactive pioneer who always aspires to come up with innovative sensors ahead of the competition, be it in Japan or abroad.


[Business description]
We develop and manufacture potentiometers, which are analog sensors that act as variable resistors. We produce both contact-type and contactless-type potentiometers. We also supply sensors and encoders based on digital circuit technology to such industrial sectors as industrial equipment, construction equipment, ship construction, and medical equipment, etc.


[Industry]
Industrial equipment manufacturing


[Representative's message]
Our company has remained a pioneer in the development of analog displacement sensors since its inception 60 years ago, and has always brought high-functionality and high-quality products to the market. Our product lineups include “Green Pot”, “Blue Pot”, and our current flagship product group, “Orange Pot”. Following up on these, we are currently undertaking development of a new product family of “digital encoders”. We will continue to spur technological innovation so as to be able to meet an even broader range of needs in the area of industrial machinery.



[Company structure for market development/overseas expansion]
Following up on “Orange Pot”, which is our current flagship product group of contactless potentiometers, which consist of a combination of a Hall IC and a magnet, we are undertaking development work for next-generation “digital encoders.” When these digital encoders are launched around 2020, the market will find a broadened scope of possible applications in our product lineups.


[Awards and media coverage]
[Media]
Newspapers: Nihon Keizai Shimbun, Nikkei Sangyo Shimbun, and Nishi Tama Shimbun
Magazines: Our company was written up as an enterprise contributing to the space industry in an article in NIKKEI BUSINESS.


[Authorization/Certification]
Our company holds ISO 9001:2000 and ISO 14001 (JQA-EM5045) certification


[Intellectual property]
A total of six patents have been either registered or published: Linear Displacement Sensor; Biaxial inclinometer; Device for Equalizing Magnetic Line of Force; Linear Displacement Sensor; Non-contact Linear Displacement Sensor; and Float Pendulum Type Inclination Angle Sensor.


This company is recommended by the following support organizations.

Kanto Head Office, SMRJ
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