Black Plating “SUGO-KURO”


Black plating “SUGO-KURO” will suppress the reflection of light by the complexity of the surface shape. It is a low-reflection plating film to achieve less than 1% reflectance of the visible light region (380 ~ 750nm). It can contribute to reduce the noise in the image and error of the measured value by preventing the optical instrument such as a camera or a spectrophotometer stray light (Incident and scattering of unnecessary light).

Strong points

Less than 1% reflectance (the visible light region)

It will achieve a low reflectivity by suppression of light reflection by the special surface shape.

Reflectivity of SUGO-KURO

The principle of blackening
The principle of blackening

Appearance of SUGO-KURO (left) and electron micrograph (right)

Thin film

Because it is a very thin film of about 3μm, it is ideal for products dimensional accuracy is required.

Heat resistance and UV resistance

Black paint and black anodized aluminum with an organic paint will fade or discolor by heat and ultraviolet rays. Our black plating will have a strong durability, because of its inorganic coating. We confirmed that it can withstand temperature of 300℃.

SUGO-KURO is resistant to heat and ultraviolet rays.

Prevention of outgas

In a vacuum environment, such as outer space, organic paint may generate outgas. Outgas may cause corrosion of the peripheral parts and fogging of lenes. Our black plating will be able to prevent the occurrence of outgas, because it does not use an organic coating.

Outgas does not occur.

RoHS Compliance

We comply with the RoHS directive, because SUGO-KURO does not contain hexavalent chromium unlike conventional blackening. SUGO-KURO can be applied for the European product.


It is perfect measure to prevent stray light of optical equipment. We propose to apply to digital camera, surveillance camera, projector, telescope, observation satellite, etc.

Improvement of camera photo quality

It can be expected to improve the image quality of photos, because it is possible to prevent a flare phenomenon and the ghost phenomenon by applying SUGO-KURO inside of the camera housing. We propose to apply to camera’s in general such as digital camera, surveillance camera, collision avoidance camera for automatic operation vehicles, endoscope, etc.


Improving the resolution of the projector

It is possible to prevent stray light, the projection of high resolution and clear image can be expected.


Improve the accuracy of the optical analysis equipment

In the optical analytical instrument including a spectrophotometer, the improvement of the analytical value can be expected by preventing the scattering of target light.


3 Laser Metalization

MID technology
“3 Laser Metalization”

3 Laser Metalization (3LM)
Sample offer: DAIEI Electronics Co., Ltd.

3 Laser Metalization (3LM) is a 3D wiring formation technology (MID technology) provided by our company. We are working primarily with LDS (Laser Direct Structuring).

Conventional two-dimensional wiring such as board and harness, has the problem of difficulties such as the electronic apparatus’s miniaturization and weight reduction, constraints of the product shape.By replacing the board and harness to “3 Laser Metalization”, we will achieve a substrate-less harnessless. Thereby, we can provide space saving, miniaturization, weight reduction, reduction of assembling steps, and the extension of the design.

We will respond to the request of thinning and weight reduction of products due to the high functionality of electronic equipment such as mobile terminals and automobiles, medical equipment etc.

Strong points

Realization of a substrate-less harnessless

Because we can form a direct line to the chassis of the product, it will be possible to reduce the number of parts by the substrate-less harness less. In addition, by eliminating the need to assemble and mount the substrate or the harness, it will also be possible to reduce the steps.

Sample offer: Gunze Co., Ltd.

Realization of miniaturization, weight reduction and space saving of the electronic apparatus

Since the substrate and the harness are not required, we can realize miniaturization, weight and space reduction of electronic equipment.

Extension of the design property by expansion of the design freedom

This technology enables the design that is not dependent to the shape of the substrate or the harness. It is ideal for design improvement of mobile terminal such as wearable equipment.



The LDS (Laser Direct Structuring) is a technique for forming a 3D wiring. This process is done by irradiating the area you want to achieve a wiring formation with a laser, the resin is a special resin material containing a metal catalyst. Then a 3d wiring formation is achieved after the plating process.

Simple manufacturing process

3D wiring can be formed by 4 simple manufacturing process that 1) injection molding, 2) laser activation, 3) metallization(plating), 4) assembly. We provide the process of 2) laser activation and 3) metallization(plating).

The LDS Process
Sample offer: DAIEI Electronics Co., Ltd.

Design rules

There are specified rules such as L / S and pattern radius, edge radius. Please refer to the details “here“.

LDS corresponding resin

For your application, we will propose the most suitable material such as polycarbonate (PC), PC / ABS, nylon, liquid crystal polymer (LCP) etc.


We propose to apply plating onto automotive parts, medical devices, wearable devices, portable terminal parts, digital camera etc.

Downsizing and weight reduction of wearable terminal

In the small-sized electronic products such as wearable terminals it is difficult to incorporate the board and harness. 3LM enables the wiring formation on the chassis itself. Therefore, it certainly can contribute to smaller and thinner, and also extend the freedom of design.

Wearable watch

Application to medical equipment

By applications such as miniaturization of medical camera etc, patient pain relief can be expected.

Weight reduction of automotive parts

It can be applied to the wiring formation of the electronic circuit of lighting such as automotive headlight, tail lamp etc. Therefore, it can contribute to the reduction in size and weight.

Electroless nickel plating

Electroless nickel plating

Electroless nickel plating sample
Sample of electroless nickel plating onto aluminum

Electroless nickel plating can give high corrosion resistance, high hardness, high wear resistance, solderability by incorporating phosphorus or boron into the plating film.

Electroless nickel plating is classified into two types of electroless nickel – phosphorus plating and electroless nickel – boron plating. EElectroless nickel – phosphorus plating is classified into three types, of low phosphorus, medium phosphorus, high phosphorus. And each ones characteristic is different.

We will suggest the best type according to the feature of the customer’s request.

Strong points

Application of feature properties

It is possible to confer high corrosion resistance, high hardness, high wear resistance, solderability etc.

Improvement of corrosion resistance

Electroless nickel – phosphorus plating can improve the corrosion resistance by incorporating phosphorus into the plating film, and becoming an amorphous structure. It is ideal for improving the corrosion resistance of the steel and aluminum material. It is expected to be applied to such as shaft and piston etc. As a result, it is possible to improve the wear resistance.

Improvement of hardness and wear resistance

Electroless nickel plating is able to confer a hardness of about 500Hv. Further, crystallization will proceed by a heat treatment of 300 ~ 400 ℃, hardness is possible to raise up to about 1000Hv.

Application of solderability

Electroless nickel plating is able to confer solderability. A type of low phosphorus electroless nickel – phosphorus plating that a passive film is not easily formed and an electroless nickel – boron plating has excellent solderability.


We will suggest application to electronic parts and automobile parts etc.

Application to the automobile industry sector

By applying it to pistons and cylinders and bearings, gears, the axis of rotation, it can be expected to achieve high corrosion resistance, high hardness, high wear resistance.

Application to the electronic industry

By applying it to contact parts and shafts, package parts, spring, bolt, nut, resistor, it can be expected to achieve high corrosion resistance, high hardness, solderability, brazability.

EMI shielding plating

Electromagnetic shielding plating

Electromagnetic shielding plating for the semiconductor module
Semiconductor module (left) and the plating sample (right)

By reflecting and attenuating electromagnetic waves with the plating film it is possible to prevent the malfunction of electronic equipment.

Strong points

Applicable to samples of complex shape.

We can plate electromagnetic wave shielding film uniformly onto the base material of complex shape.

Ideal for prevention of “Intrasystem EMI”

In recent years, due to the high density of electronic components, the issue of mutual electromagnetic noise interference, or so-called “Intrasystem EMI” has arisen. Our electromagnetic shielding plating prevents Intrasystem EMI at the component level.

Enables devices to become smaller and lighter

Because of the shield characteristics can be obtained with a thin film (about 10μm), It can be expected to reduce the size and weight of electronic products.


Application to the mobile terminal

It can be expected smaller and lighter mobile devices such as wearable terminals, smart phones, tablet etc.

mobile devices

PTFE composite Ni plating

PTFE composite nickel plating

The principle of PTFE composite nickel plating
The principle of PTFE composite nickel plating

By incorporating PTFE particles into the plating film, it can give the characteristics of the PTFE to the substrate surface. It can give lubricity and sliding properties, releasability, non-viscosity, wear resistance, water repellency.

Strong points

Application of lubricity

It is possible to confer lubricity to the substrate surface. In the case of PTFE-rich type (30 ~ 35 vol%), the friction coefficient will be about from 0.07 to 0.08.

Electron micrograph of PTFE composite electroless nickel - phosphorus plating
Electron micrograph of PTFE composite electroless nickel – phosphorus plating

Improvement of releasability

It is possible to improve the release properties of the mold.

Application of water repellency

It is possible to confer water repellency (About 110 ° contact angle) equivalent to the teflon coating.


Improvement of the robot joint parts sliding properties

By conferring the sliding property in joints, it can be expected to reduce or free of the lubricating oil.


Improvement of mold releasability

By conferring lubricity, it can be expected to improve releasability of mold such as rubber etc.

Sheet fusing sagging adhesion reduction of heat sealer

By conferring non-viscosity, it can be expected to reduce sheet fusing sagging adhesion of heat sealer.

Clogging prevention of electric saw blades

By applying to the blade of an electric saw, it has the effect of preventing clogging, delaying the deterioration of the sharpness.

Anodic oxidation of titanium

Anodic oxidation of titanium

Anodic oxidation sample of titanium
Anodic oxidation sample of titanium

Because it is the light metal that excellent corrosion resistance and heat resistance, titanium has been utilized aerospace and building sector, in the sports field etc.

Not only to use the color texture of titanium itself, it enables a variety of color by Anodic oxidation processing. It can be utilized in order to improve the decorative and design.

Strong points

A variety of colors

It is possible to reproduce various colors by the thickness of the oxide film to be generated in the titanium surface.

The cross section photograph of the anodic oxidation of titanium by an electron microscope
The cross section photograph of the anodic oxidation of titanium by an electron microscope

Coloring principle
Coloring principle


Improving the visibility of the medical equipment

Titanium is known as a highly bio-compatible metal. It has been used as a medical device such as implant medical screws and medical forceps, needle holder, etc.

Because it is easy to identify the instrument by Anodic oxidation, It can make the prevention of medical errors.

Medical appliance
Tweezers or needle holder for medical

Bright silver plating

Bright silver plating

Bright silver-plated sample
Bright silver-plated sample

Silver is known to have a high spectral reflectance. By applying bright silver plating, It is possible to confer about 95 percent reflectance (blue to red region 450-750nm). In addition, by applying the anti-tarnishing method at our company, it has a strong durability to sulfide discoloration.

Strong points

About 95% reflectance (blue to red region)

By using the high reflectivity, it will be able to be used for LED reflector etc.

Reflectance data of bright silver plating
Reflectance data of bright silver plating

Excellent sulfidation resistance

By the anti-tarnishing method after plating, we will provide excellent sulfidation resistance products.


We propose the use for reflective mirror of LED and copier etc.


Antimicrobial plating “AGXX”


Antimicrobial plating “AGXX” is a contact catalyst that applies silver plating technology. Under water environment, it is effective against all bacteria. Unlike the conventional silver film, it is strongly against sulfurization, maintain a long-term antimicrobial effect.

Strong points

Effective against all bacteria

It can inhibit the growth of bacteria and fungi (molds). For example, we confirmed the antimicrobial effect on E. coli and staphylococcus aureus, pseudomonas aeruginosa, legionella, aspergillus, penicillium, yeast, candida.

AGXX effectiveness

Chemicals, power supply, and light source are unnecessary

It is possible to solve the problems of existing technologies. For example, silver has disadvantages. such as reduction of the antibacterial effect by sulfurization, and the lack of immediate effect by antimicrobial that is dependent on the elution of silver. Further, chlorine corrodes peripheral equipment. And it produces waste. Ultraviolet light has the problem that power is necessary. AGXX will be able to overcome these disadvantages.

Long-term effect

AGXX has long-term antimicrobial effect. The main reason is because the antimicrobial effect of the potential difference in the surface layer, therefore silver elution is extremely small.

Antimicrobial effect of AGXX


We will be able to use AGXX in a wide range of fields from industries to homes. It can reduce the turbidity of the water in the vase. By putting in a filtration device, it can also inhibit the growth of bacteria in water. In addition, there is also performance record with water server.

Utilized in maintaining the quality of drinking water

By introducing AGXX into the water storage tank of the water server, it can suppress the mold and slime.

Application to water server

Prevention of infectious diseases in the medical care

It is possible to inhibit the growth of bacteria by applying to dental treatment equipment and such.

Application to medical equipment

It provides the added value of antimicrobial effect in consumer electronics products and toiletry.

It suppresses the bacteria breeding of air conditioners, humidifiers, dehumidifiers, shower heads, washing toilet seats, washing machines, kitchens etc.

Application of AGXX to home appliances and toiletry

Application to hydroponics and cut flowers

By applying AGXX, it can contribute to the long life of the hydroponics vegetables and cut flowers.

Application of AGXX to hydroponic cultivation and cut flowers