Editing Fujitsu Leaf Spring (section)

==1st Generation==
Individually housed leaf spring with corresponding button spring for actuation in each switch. Could be used individually. It used a cruciform slider with part of the leaf spring mechanism embedded into the slider, going through it and poking of the top of the cross.

The keycap mount dimensions are a fraction of a millimetre too large to fit Cherry keycaps; keycap insertion is very stiff. Testing with a modern Signature Keycaps novelty keycap yielded borderline success, while testing with a 2009 Filco keycap resulted in what appeared to be whitening of the plastic from stretching. Attempting to use Cherry MX mount keycaps is liable to lead to split keycap stems.

===Key feel===
The linear version is extremely smooth (even when dirty). Much heavier than the later generation switches. One of the best examples of well designed linear switches.

===Keycaps===
All known keycaps are [[Spherical keycap|spherical]] [[double-shot]], some nearly solid plastic. It uses a cruciform slider, as do many of the switches from the late 1970's through the 1980's.

<gallery widths="250px" heights="187px">
File:1st Generation switch..jpg    | 1st Generation clicky switch; note the tiny metal tip at the top of the stem
File:1st Generation switch top.jpg | 1st Generation clicky switch top; note the letter "F" at the base
File:1st Generation switches.JPG   | 1st Generation clicky switches
File:1st Generation keycaps.JPG    | 1st Generation keycaps
File:1st Generation keycaps..JPG   | 1st Generation keycaps
File:1st Generation keycaps...JPG  | 1st Generation keycaps
File:FLS-1stGen-Keycaps.jpg        | 1st Generation keycaps; the rightmost keycap is actually from a [[Fujitsu]] [[Fujitsu Magnetic Reed#Vertical Reed|vertical reed switch]], the other two could possibly be from a 1st generation or vertical reed switch, as the keycaps are compatible.{{citation needed}}
</gallery>

===Linear switch module===
The following switch is NOS purchased through AliExpress.

<gallery widths="250px" heights="187px">
File:Fujitsu 1GL -- top.jpg                        | Top, with Fujitsu branding
File:Fujitsu 1GL -- bottom.jpg                     | Bottom
File:Fujitsu 1GL -- base.jpg                       | Base, showing interesting cutout pattern in the plastic
File:Fujitsu 1GL -- opened.jpg                     | Opened; unlike the patent image, the contact assembly is a flat discrete module
File:Fujitsu 1GL -- partial disassembly.jpg        | Partial disassembly
File:Fujitsu 1GL -- slider.jpg                     | Slider with moulded-in actuator
File:Fujitsu 1GL -- slider, rear.jpg               | Slider rear
File:Fujitsu 1GL -- slider, metal insert point.jpg | Slider, showing where actuator leaf enters into the stem
</gallery>