Functional Materials

For example, Toyo Kohan’s aluminum substrates for magnetic disks enjoy a good reputation worldwide.

Magnetic Disk Substrates (MD)

Aluminum substrates

MD is one of the main components for HDD and is made with aluminum or glass substrates coated with a thin film magnetic layer.
The aluminum substrates produced by Toyo Kohan are mainly used for HDD built into desktop computers, servers and video recorders.
These are produced in a highly clean room, with own-developed process conditions, to achieve "contamination/defect free substrates".
Our key technologies are continuously developed and improved, especially in the plating and polishing process.

Cladding Materials (FINE CLAD)

Coils made of cladding materials
(Copper/nickel, nickel/aluminum, aluminum/stainless steel cladding)

FINE CLAD is a highly functional type of metallic cladding material, and Toyo Kohan was the first company in the world to develop it and put it to practical use.
Toyo Kohan has made it possible to manufacture a variety of metal combinations by using our surface activation bonding process, which is a new room temperature bonding technology in vacuum.
FINE CLAD can create some excellent characteristics.
These characteristics are used in a number of various fields in which conventional cladding materials are difficult to be applied.

Functional film for optics (Fine Cast Film)

Films for optical use are being developed based on functional film for container technology. We are working to develop optical films for flat panel display units.