目次
Kuon R&D photographs the machines it restores, and publishes those photographs so that other people can use them.
The reason is simple. A tape recorder built in 1967 survives because people keep repairing it, and people keep repairing it because someone before them wrote down what they found. That knowledge has always moved by hand: an engineer in Britain sends a scan to someone in Japan, and asks nothing for it. This page is how we pass the same thing on.
The terms
The photographs published by Kuon R&D in its Revox and tape machine articles may be copied, republished, translated, printed, and used in repair documentation, forum posts, videos and teaching material.
The one condition is that Kuon R&D is named as the source, with the address kuon-rnd.com where a link is possible.
No permission needs to be requested and no fee is due. Commercial use is included. If you are unsure whether your use is covered, it is.
What this covers
- The photographs taken by Kuon R&D of machines under restoration.
- The photographs remain ours; naming the source is what keeps them traceable back to a machine that was actually measured.
What this does not cover
- Factory service manuals, user manuals, schematics and brochures. Those belong to their publishers and we do not redistribute them. Where this site quotes a part number or a measurement from such a document, it quotes a fact, and facts are free to anyone.
- The article text itself, which is a separate matter. If you want to translate an article in full, write to us and the answer will almost certainly be yes.
If you have material of your own
If you are restoring one of these machines and you photograph something this archive is missing, we would like to hear from you. A part number confirmed on a real machine, a variant nobody has recorded, a failure mode that is not in any manual: those are the entries that a factory document cannot contain, because they were discovered afterwards.
Send it and it will be credited to you.
Why it is worth doing
These machines were made in tens of thousands and are now scattered across the world in ones and twos, each with a different owner working alone. The documentation is what connects them. A photograph that stays on one hard drive helps one person. The same photograph, copied freely, helps everyone who finds it afterwards, including people who will be born after all of us have stopped working.
That is the whole of the argument.