12.02.2023, 19:58
Thank you for the really extensive reply!
But I don't know the exact processes regarding particle absorption, when Cobalt and Magnetite are contained in the tape in what way, I haven't had the opportunity to study such materials, I always just speculate who it's from, and what's in the tape.
Maxell has always boasted about their Magnetite since the 90's, other companies I knew of were Agfa and Taiyo Yuden, who explained it in their 1985 catalog.
http://pureanalogue.su/index.php/en/cata...-brochures
http://pureanalogue.su/media/com_mtree/i...o/1714.jpg
TDK is inaccurate and misleading in their infromation, yet it is obvious that they changed fundamentally the composition of the magnetic layer in the early 90s.
Sony can't clearly state anything about their audio tape composition, so it's hard to tell if it contains other ingredients outside of FeCo, especially UX-pro was once speculated to be Metal Type II, but this hasn't been confirmed.
Denon used to be able to list interesting particle names for the Japanese market, for the European they wrote more precise compositions without complicated names.
As I was going through those That's materials, I learned that for Suono cartridges they use a material they call composite resin
Oh, and I still picked out pictures of the tapes from my UX-S audiotape tests for darkness comparison.
Pictures: UX-S 1986, 1988, 1990, 1996, 1997, 1998.
But I don't know the exact processes regarding particle absorption, when Cobalt and Magnetite are contained in the tape in what way, I haven't had the opportunity to study such materials, I always just speculate who it's from, and what's in the tape.
Maxell has always boasted about their Magnetite since the 90's, other companies I knew of were Agfa and Taiyo Yuden, who explained it in their 1985 catalog.
http://pureanalogue.su/index.php/en/cata...-brochures
http://pureanalogue.su/media/com_mtree/i...o/1714.jpg
TDK is inaccurate and misleading in their infromation, yet it is obvious that they changed fundamentally the composition of the magnetic layer in the early 90s.
Sony can't clearly state anything about their audio tape composition, so it's hard to tell if it contains other ingredients outside of FeCo, especially UX-pro was once speculated to be Metal Type II, but this hasn't been confirmed.
Denon used to be able to list interesting particle names for the Japanese market, for the European they wrote more precise compositions without complicated names.
As I was going through those That's materials, I learned that for Suono cartridges they use a material they call composite resin
Oh, and I still picked out pictures of the tapes from my UX-S audiotape tests for darkness comparison.
Pictures: UX-S 1986, 1988, 1990, 1996, 1997, 1998.