Topre switch is a keyboard switch made by Topre Corporation, of Japan. Topre switch is famous due to its use in Happy Hacking Keyboard, being famous as a high-end keyboard from about 1996 to 2015.
The electrical switch mechanism in Topre switch is capacitance. This means, there is no contact between electric conductors for the switch to turn on. The key does not need to hit bottom to activate.
Topre switch's key feel came from its rubber dome, not the spring.
The Name Topre
The name Topre, came from Tokyo Press, because the company was named Tokyo Press Kogyo Co Ltd, and got renamed in 1985-10 to Topre Corporation.
Topre switch patent expired in 2004
Topre Switch Review
I don't like topre switch. It has a hit-bottom finger-shock problem. Topre switch, got this rubber dome, you have to hit with certain force, and because it is rubber dome, the dome collapses at some point and sucks you down, thus hit bottom and creates a finger impact shock feel. I don't have this problem with any Cherry MX Switches, nor with Buckling Spring Key Switch , nor Romer-G Switch .
Topre Switch Keyboards
The Idiocy of Happy Hacking Keyboard
CM Storm NovaTouch
Sony BKE-2011 keyboard
Topre key switch is most famously used in Happy Hacking Keyboard.
Keyboard with Topre switch usually costs $200 and more. It's loved by many keyboard nerds.
Here is list of keyboards with Topre switch.