Mitsumi spring over membrane

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This article requires additional photographic illustration — membranes, and Mitsumi mount

Mitsumi spring over membrane

Manufacturer	Mitsumi
Switch type	Linear

Mitsumi spring over membrane is a linear spring-over-membrane switch from Mitsumi that uses discrete slider modules over a two-layer membrane over a PCB.

The type name has yet to be determined.

The custom-mount version is depicted below. There is also a similar switch with Mitsumi mount, found in a typewriter, that is similar, but is not confirmed to be the same type of switch.

Keyboards

• Commodore SX-64 (custom mount)
• Unspecified typewriter (Mitsumi mount; unconfirmed)<ref>Reddit — What switches are these? Electric typewriter.</ref>
• Cardinal Professional Message Center

Gallery

Custom mount

The example below is a Commodore SX-64.

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  Switches
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  Switch and keycap
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  Side view of keycap mount
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  Switch modules removed
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  Switch modules and keycaps
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  Switch module, side view
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  Lock position viewed from below, with the switch module removed
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  Bottom of a normal switch module
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  Bottom of the reduced size switch module for illuminated positions

References

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