STATUS : Under development | Preparing for production | Ready for production | In production
Ag/AgCl bioelectrodesAg/AgCl biological electrode


Biological electrode made by P-Flex™
Biological electrode made by P-Flex™

Ag/AgCl biological electrode made with P-Flex™ boasts an overwhelmingly low resistance to electrodes due to its copper wiring and has an advantage in that parts mounting is possible. In addition, our inkjet technology has more advantages in the following;

  • Can be manufactured at a reasonable price in a short period of time because the mold is only for Ag/AgCl paste applying.
  • Can be produced in medium and small batches.
  • You may choose between PET film or polyimide film substrates.
  • Available for material ratio adjustment of Ag/AgCl paste and prototyping for iontophoresis.
Example of Layer constitution

What is a biological electrode

The biological electrode detects the electric the bioelectric potential such as ECG(electrocardiogram), EEG(electroencephalogram) or EMG(electromyogram).
In addition, "Generally, nickel silver or silver electrodes are used for electrode derivation of ECG or EEG though, it is recommended for monitoring to use Ag/AgCl electrodes used stably over a long time, and having low polarizing potential between the skin and the electrodes."1.

*1 Yoji Ishiyama, The Performance required for the sensor for biomedical signal measurements, The Japanese journal of medical instrumentation, Vol.80,No.1(2010), p.21.

Myoelectric potential measurement by
biomedical electrodes using silver/silver chloride electrodes

What we have prepared here is a set of sensors connected to our P-Flex™ biomedical electrodes.

Biomedical electrodes are used to measure EMG, ECG, and EEG.
Here are ones we have coated with silver/silver chloride.

This is currently connected here, forming a + (plus), - (minus), and N electrode combination.

Let's go ahead and take an EMG measurement.
If you take a look at the screen, you can see that it is in a relaxed state with no movements. When you move, you can see that there is a repetition of contraction and relaxation.

This is how our P-Flex™ biomedical electrodes can be used to take EMG measurements.


ECG(electrocardiogram), EEG(electroencephalogram), EMG(electromyogram)

Medical devices, human-computer interfaces, robots

For general and technical inquiries, please contact us from the form below;

About P-Flex™


When compared to conventional manufacturing processes of flexible substrates, the unique manufacturing method (*) of "printing metal only on the necessary parts by inkjet and using plating technology to grow the metal" has shortened the production process and succeeded in reducing both manufacturing cost and lead time as well as handling prototyping and mass production more flexibly.
(* Patent No. 6300213 acquired)

P-Flex™️ manufacturing specifications
Substrate Transparent heat-resistant PET film: 50 µm thick, 125 µm thick
PI (Polyimide) film: 25 µm thick
Line width / interval 200/200 μm min., 200/150 μm min. (option)
Temperature during continuous use Between -20°C and +105°C
Copper foil thickness 3μm / 6µm (option)
Panel size 180 × 270 mm max.
Legend printing Single-sided
Soldermask application UV inkjet printing (green)
Legend printing UV inkjet printing (black)
SMT process Metal mask, manual pick and place and reflow compatibility
Minimum size of part for assembly 1005M(0402), 0.4mm pitch IC
Stiffeners alignment Available (Connector part thickness alignment, mount part stiffener)
Inspection Optical inspection + opens/shorts test
For general and technical inquiries, please contact us from the form below;

Company information and contact

Name Elephantech Inc.
Representative Shinya Shimizu, CEO
Establishment January 2014
Capital JPY 458,390,000 (including capital reserve)
No.of employees 23
Address 4-3-8 Hatchobori, Chuo-ku,
Tokyo 104-0032, Japan