Editing Mitsumi KDM

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{{infobox dswitch
| image name        = Mitsumi simplified.jpg
| manufacturer      = [[Mitsumi]]
| product code      = 
| contact mechanism = [[Metal contact]]
| switch type       = Linear
| actuation force   = 
| introduced        = 
| discontinued      = 
| family            = 
| keycap mount      = Cruciform, round
| switch mount      = [[Plate mount]]
| travel            = ca. 3.8 mm
| patents           = 
}}

'''Mitsumi simplified''' is a linear, metal contact switch from [[Mitsumi]].

==Nomenclature==
The moniker "Mitsumi simplified" follows a tradition of using the appellation "simplified" for switches that appear to be a cost-effective design compared to a brand's more complex offerings. However a Nakajima All typewriter with these switches has a PCB inscribed "KDM-A70YU", implies that the correct designation is "KDM Type".<ref name="Nakajima-All">https://imgur.com/a/ZLBFd</ref> "Mitsumi simplified" is the historically used designation for these switches but given the observed designations, "KDM" is more accurate. "KDM" would fit with the existing designation patterns for Mitsumi switches where "KCx" indicated type 2 [[Mitsumi standard mechanical]], and the implication of "linear" or "momentary" for "KxM" per [[Mitsumi miniature mechanical]].

==Description==
It shares keycap mount with the switches used in the [[Commodore 64]]; the cross mount type accepts C64 keycaps, and the round mount type fits the keystem adapter for the alternate action switch.

The switch uses bare metal contacts, which are also the terminals; the terminals can be seen running down the outside of the switch.

The switch is clearly branded on the base with the older (Kana) Mitsumi logo.

No other details are known to exist.

==Variants==
{| class="wikitable variants-table"
! !! Mount
|-
| [[File:Mitsumi simplified -- round mount.jpg|175px]] || Round
|-
| [[File:Mitsumi simplified -- cross mount.jpg|175px]] || Cross
|}

Cyan sliders also exist.<ref>Reddit — [https://www.reddit.com/r/MechanicalKeyboards/comments/4zx47s/keyboard_science_found_some_uncommon_round/?st=j9ert6vf&sh=f4d1787e {{sq|keyboard_science}} Found some uncommon round plunger Mitsumi switches : MechanicalKeyboards]</ref>

==Keyboards==
* Nakajima All typewriter (unconfirmed)<ref name="Nakajima-All" />
* [https://deskthority.net/keyboards-f2/tono-theta-o-9000e-t17360.html Tono THETA O-9000E / Round mount]

==Gallery==
===Cross mount===
The depicted switch is [[NOS]] from STRONIC in France. The part number is not known.

<gallery widths=250 heights=187>
File:Mitsumi simplified -- top.jpg          | Top
File:Mitsumi simplified -- side.jpg         | Side
File:Mitsumi simplified -- base.jpg         | Base
File:Mitsumi simplified -- keycap mount.jpg | Keycap mount
</gallery>

==References==
<references />

[[Category:Mitsumi switches]]
[[Category:Metal contact switches]]
[[Category:Linear switches]]
[[Category:List of all keyboard switches]]