Kasuga is Japan’s leading company of static and corona treaters. Kasuga provide various kind of static electricity eliminator (ionizer) and corona surface treatment.

Gun type ionizer (GH-03X/GH-04X)



  • This ionizer consists of an integrated high-voltage power supply and electrode (gun), meaning that its high-voltage cable is not exposed, resulting in outstanding safety and compact dimensions.
  • Installation of the ionizer is simple: Simply connect it with power supply by using a dedicated AC adapter and connect a coil hose to the unit.
  • An ultra-small, high-voltage power supply and an air gun are integrated as a single resin piece, resulting in compact dimensions and light weight. The user will not be fatigued even after continuous usage.
  • The main unit of the air gun is made of a silicon-free material, meaning the ionizer can be used in a clean-room environment. (GH-03X only)


Model GH-03X GH-04X
Ion generation method High-frequency corona discharge method
Discharging electrode needle Special alloy with low dust emission
Air pressure to be used 0.1 – 0.4MPa(effective range of ionization)
Recommended air pressure 0.2 – 0.4MPa
Amount of air consumption 140 – 235L/min
Flow volume adjusting function No Yes
Air inlet Upper side Under side
Amount of ozone production 0.02 ppm or less(150mm)
Operating environment Temperature: 0°C-40°C, Humidity: 80% RH or below (no condensation)
Input condition AC100 – 240V 50/60Hz
Power consumption Approx.2.5VA(DC24V)
Mass Main unit: Approx. 280 g (not including AC adapter and coil hose)

Ionization performance



Intended use

  • Static and dust elimination from resin-molded parts and optical components
  • Static and dust elimination prior to painting
  • Static and dust elimination from resin products while they are being molded or processed
  • Anti-dust measure in various assembly processes

Bar type static eliminator (APKF)

  • The cleaning lamp lets you know when the unit needs cleaning, enabling performance of maintenance at the appropriate time. (APKF-0000-H only)
  • A high-voltage generator circuit is incorporated in the static eliminating electrode, which enhances safety since high-voltage wiring is not used.
  • The DC static eliminator features grounding electrodes, which stabilize corona discharge (patent pending). This enables higher stability of the electric field shield effect and ion balance and less frequent cleaning of the discharging electrodes.
  • Static-eliminating electrode needles made of a special alloy with low dust emission come as standard equipment, which allows the unit to be used in a clean-room environment. The needles can easily be replaced.
  • Use of the unit with clean air permits high-speed static elimination.
  • A DC-type unit, the static eliminator generates far more ions than other units, resulting in high-speed static elimination.
  • The ion balance can be fine-tuned to maintain 0-volt potential of the static elimination area.


Main Unit

Model APKF
Ion generation method DC corona discharge
Electrode coupling method High-resistance coupling
Input condition DC24V
Power consumption See below
Operating environment Temperature: 0°C-40°C, Humidity: 80% RH or below (no condensation)
Mass See below



Dedicated AC adapter (Power specifications 1)

Model AC adapter for APKF
Input conditions AC100 – 240V 50/60Hz
Output voltage DC24V
Operating environment Temperature: 0°C-40°C, Humidity: 80% RH or below (no condensation)
Mass 280g

Static elimination performance for fast-moving films



Static elimination performance of the static eliminator installed on a clean bench with down flow



Intended use

  • Static elimination of films, etc. conveyed at high speed
  • Static elimination of flat panels conveyed
  • Mounting on a clean bench or clean unit for creation of an ion-rich area

For other models of Kasuga Static Ionizer please go to this link.

Human body static meter (KSD-4000/NK-3002)

Each electronic device and metal tool that workers handle has its own ground electrostatic capacity and is charged with human body static. When a charged electronic device touches the ground or a metal tool touches an electronic device, a transient current with high peak current will flow at a high speed, resulting in a failure. Use of a human body static meter ensures accurate measurement of static on the body, making it possible to immediately judge whether the static will harm an electronic device. It also informs of how effective conductive floors, static mats, static shoes, wrist straps or other countermeasures are in lowering human body static.

  • Static on the user’s body is easily measured by holding the probe in one’s hand.
  • High-resolution measurement at ±0.1V is possible. (KSD-4000)
  • Permits measurement over a wide range.
  • Allows switching between peak hold measurement and continuous measurement.
  • Use with a recorder provides a continuous record of changes in human body static caused by the worker’s movements.
  • Permits easy evaluation or education of workers concerning countermeasures against static.
  • Equipped with a built-in circuit that detects and informs of failure of the detection sensor. (Patented) (KSD-4000)
  • The Sleep mode saves battery power when forgetting to turn the unit off. (KSD-4000)


Model KSD-4000 NK-3002
Detection method Vibration-type static sensor
Measuring ranges ±0.1 – ±999.9V ±0.01 – ±10kV
Analog output 0 – ±999.9mV 0 – ±1000mV
Measurement precision Within ±5%
Measurement mode Continuous/ Peak hold
Operating environment Temperature: 0°C-40°C,Humidity: 65% RH or below (no condensation)
Power supply 2 AA alkaline batteries (10 hours or more of continuous operation) 2 AAA alkaline batteries (4 hours or more of continuous operation)
Dimensions Main unit: 121×70×22mm
Probe: 125mm×25φ
Main unit: 117×70×25mm
Probe: 141mm×40φ
Mass Approx. 270g
(including probe and batteries)
Approx. 390g
(including probe and batteries)
Options AC adapter
(AC100 – 240V)
AC power supply adapter
(AC100 – 240V)
Analog output cable(length: 1,000 mm)

For other models of Kasuga Static Meter please click this link.

Corona Treatment

What is corona treatment?

Corona treatment is a surface treatment technique. It modifies the surface of the base material to treat – such as plastic film, paper or metallic foil – by applying corona discharge.

Corona discharge is generated when high-frequency, high-voltage electricity from a corona generator is applied between the electrode and treating roller of the treating station.

A base material that passes through this corona discharge field is corona treated. This treatment generally improves wettability (wetting tension), and at the same time significantly improves the printing property, coating property, laminating property, etc.

Applications of corona treatment

Generally, the surfaces of plastics have low energy and are chemically inert. Because of these properties, the surfaces have poor coatability with coatings, printing inks, etc. Secondary processing of plastic films therefore requires their surface modification.
Corona treatment applies a polar functional group to the material surface to improve its hydrophilic property, thereby preventing coating and printing failures.
Recent years have seen the emergence of many functional films with small surface energy, making it more important to apply corona treatment in the converting process. This has led to the expansion of corona treatment into new technologies, a typical example of which is gas plasma treatment.
Properties of corona discharge treatment have also been applied for other purposes, including oil film removal from metallic foils, anti-fog treatment of plastic boards, etc., and facilitation of surface bleeding of additives.

Typical applications of corona treatment

  • Pre-treatment before printing
  • Pre-treatment before adhesion (lamination) (See “Usage examples”)
  • Pre-treatment before coating (See “Usage examples”)
  • Oil film removal (from aluminum foil, etc.)
  • Antifogging
  • Facilitation of surface bleeding of additives, etc.

Insulating base material treating station


This unit is a standard treating station for insulating base materials such as plastic films.
It is widely used for pretreatment before a converting process such as printing, coating, or laminating.
The metal electrode comes with a swinging gate. (A gate that opens and closes vertically can also be produced.) This is available with treatment widths up to 3,000 mm.

Equivalent circuit (insulating base material)


Conductive base material treating station


This treating station is capable of treating conductive base materials such as aluminum foil and copper foil.
It is also compatible with insulating base materials such as plastic films, so we recommend it to users engaging in processing treatment of a wide variety of base material films.
This station is essentially used as a combination of a dielectric coated electrode (such as a ceramic or quartz electrode) and a metal roll.

Equivalent circuit (conductive base material)


Station for molded products

construction_01 This station is used for treating plastic-molded products and thick base materials such as foamed sheets.
It mainly uses a wire electrode to treat base materials in special shapes or ultra-thick base materials.
Conveyors, turntables, and other carrier devices are used to suggestion stations that are suitable for individual customers and that will improve production efficiency.

Gas plasma treatment station


This treating station is used to perform corona discharge treatment in gas.
When corona treatment in gas (gas plasma treatment) is applied, selectivity is given to the functional group to be introduced to the base material by the type, etc. of the rare gas or inert gas used. The result is surface modification that cannot generally be obtained with corona treatments.

For more products detail of Kasuga Corona Treatment System please go to this website.