Editing Mitsumi hybrid switch (section)

==Variants==
The total number of variants manufactured is not known. Listed below are the variants discovered to date.

===Conductive rubber disc===
Found in the [[Commodore 8032-SK]] and related machines, this has a small conductive rubber disc at the bottom of the slider. This has been found in an effectively linear form with a helical spring, and the circuit pathways are on a PCB. The following images are from an 8032-SK:

<gallery widths=250 heights=187>
File:Commodore 8032-SK keyboard -- top assembly, top.jpg    | Top assembly, top view
File:Commodore 8032-SK keyboard -- top assembly, bottom.jpg | Top assembly, bottom view
File:Commodore 8032-SK keyboard -- wide zero keycap.jpg     | Hollow keycap and mount adapter
File:Commodore 8032-SK keyboard -- switch, front view.jpg   | Front view of the switch
File:Commodore 8032-SK keyboard -- PCB.jpg                  | PCB
File:Commodore 8032-SK keyboard -- slider with keycap.jpg   | Slider with keycap attached; the spring does not normally extend that far down
File:Commodore 8032-SK keyboard -- movable parts, 2.jpg     | Movable parts, including keycaps; the sliders use the old toothed cylindrical mount, and the keycap uses an adapter
File:Commodore 8032-SK keyboard -- movable parts, 1.jpg     | Movable parts, including keycaps
File:Commodore 8032-SK keyboard -- slider, side.jpg         | Side view of slider
File:Commodore 8032-SK keyboard -- slider, bottom.jpg       | Bottom view of slider
</gallery>

===Wide foot===
{{main|Mitsumi KSD Type|Mitsumi KSR Type}}

These versions use a tall keystem with a laterally suspended pad. The pressure type (KSD Type) such as that found in the [[Atari 800]] (pictured below) appears to use a pair of membranes over a PCB. These are pressure actuated using small rubber pads, attached to a rubber arc that flexes to provide the overtravel. KSR type covers the version with conductive pads over a plain PCB.

<gallery widths=250 heights=187>
File:Atari 800 -- Mitsumi keyboard, bottom.jpg              | Rear view showing underside of PCB
File:Atari 800 -- Mitsumi keyboard, PCB and membranes.jpg   | PCB with two membrane layers
File:Atari 800 -- Mitsumi keyboard, bottom, PCB removed.jpg | PCB removed, revealing the sliders
File:Atari 800 -- Mitsumi keyboard, slider plate.jpg        | Slider plate
File:Mitsumi hybrid switch, linear -- components.jpg        | Switch components; note the external [[return spring]]s and cruciform sliders
</gallery>

===Conductive foot over membrane===
{{main|Mitsumi KPQ Type|Mitsumi KPR Type}}

This version provides a wide conductive rubber foot, attached to a similar rubber arc as in the pressure version. KPQ Type covers tactile switches and KPR Type covers linear switches; both types use a single membrane layer for the [[keyboard matrix]].

<gallery widths=250 heights=187>
File:Mitsumi hybrid -- tactile -- switches.jpg          | Mitsumi-made [[Apple Keyboard II]]
File:Mitsumi KPQ-E99ZC-12 UK -- switches, top.jpg       | [[Mitsumi KPQ-E99ZC]]
File:Mitsumi KPQ-E99ZC-12 UK -- sliders and sleeves.jpg | Switch components from a KPQ-E99ZC
</gallery>

===Conductive foot over PCB===
{{main|Mitsumi KKQ Type|Mitsumi KKR Type}}

KKQ and KKR types are externally visibly identical to KPQ and KPR types, but internally they use a PCB instead of a membrane sheet for the [[keyboard matrix]].

<gallery widths=250 heights=187>
File:Commodore CDTV - keyboard mechanism bottom.JPG           | [[Commodore CDTV]] keyboard seen from below, showing PCB
File:Commodore CDTV - space bar rubber sleeve and springs.JPG | Commodore CDTV space bar arrangement
File:Commodore CDTV - caps lock spring.JPG                    | Commodore CDTV caps lock spring
</gallery>