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Mitsumi standard mechanical Type 1 Two Fingers switches
Posted: 09 Jan 2018, 01:13
by 2ter
Posted: 09 Jan 2018, 03:25
by codemonkeymike
I don't think this variation has been documented,
wiki/Marquardt_Two_Fingers_Typewriter_switch . Seems like a higher quality version of the documented 2 finger switch.
Posted: 09 Jan 2018, 09:20
by Daniel Beardsmore
Wow, what a find! What date codes are there on the typewriter? If Mitsumi made the PCB, it should have a date label on it. Also, what codes are there on the PCB? I am hoping that there is something resembling known [wiki]Mitsumi model numbers[/wiki] that would give us the series name of the switches. If existing patterns are anything to go by, the model should begin KC_-.
Also, being a typewriter, you're also likely to have a double-action switch in there somewhere. Mechanical shift lock is also possible.
codemonkeymike: it's this series — [wiki]Mitsumi standard mechanical[/wiki]
Posted: 09 Jan 2018, 23:46
by codemonkeymike
Daniel Beardsmore wrote: Wow, what a find! What date codes are there on the typewriter? If Mitsumi made the PCB, it should have a date label on it. Also, what codes are there on the PCB? I am hoping that there is something resembling known [wiki]Mitsumi model numbers[/wiki] that would give us the series name of the switches. If existing patterns are anything to go by, the model should begin KC_-.
Also, being a typewriter, you're also likely to have a double-action switch in there somewhere. Mechanical shift lock is also possible.
codemonkeymike: it's this series — [wiki]Mitsumi standard mechanical[/wiki]
Ah, my bad
Posted: 10 Jan 2018, 12:01
by 2ter
Daniel Beardsmore wrote: Wow, what a find! What date codes are there on the typewriter? If Mitsumi made the PCB, it should have a date label on it. Also, what codes are there on the PCB? I am hoping that there is something resembling known [wiki]Mitsumi model numbers[/wiki] that would give us the series name of the switches. If existing patterns are anything to go by, the model should begin KC_-.
Also, being a typewriter, you're also likely to have a double-action switch in there somewhere. Mechanical shift lock is also possible.
codemonkeymike: it's this series — [wiki]Mitsumi standard mechanical[/wiki]
Unfortunately i got rid of the typewriter, but i guess it was made sometimes in 85, since there is a 84 on the PCB and a sticker with 1985 on the display Part that i kept:

- IMG_20180110_004959.jpg (662.62 KiB) Viewed 2353 times

- IMG_20180104_122351.jpg (525.13 KiB) Viewed 2353 times

- IMG_20180110_005027.jpg (650.55 KiB) Viewed 2353 times

- IMG_20180110_005032.jpg (631.42 KiB) Viewed 2353 times

- IMG_20180110_005037.jpg (594.03 KiB) Viewed 2353 times
The switches are all the same, no special ones in this typewriter.
They feel a little wobbly, dirty and slightly tactile.
Posted: 10 Jan 2018, 19:16
by Daniel Beardsmore
So close and yet so far … it seems that all Mitsumi supplied was the switches.
Posted: 13 Jan 2018, 10:04
by Elrick
2ter wrote: I found this switches in an Olympia Startype typewriter:
mitsumistandardmechanicaltype1_twofinger.jpg
Please someone create a moving GIF of this switch, going up and down

.
Much Respect to a simple switch showing the World how it cares, onya.