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This technology dates back to 1959 but the idea of coating paper in magnetic materials like ferric oxide and recording on them wasn't new at the time. Some of the first open reel recorders used paper reels of tape with special coating.
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on a rotating disc is spirally moved from outside to inside while the recording material (paper) stays still. Up to four minutes can be recorded per sheet. Microphone, headphones and monitor jacks are 3.5mm plugs.
99:, Sakae Fujimoto, Nihon Denki Bunka Kogyo Kabush, Riken Kogaku Kogyo Kabushiki K, "Apparatus for positioning recording and recorded sheets on a magnetic recorder and reproducer", published 1960-09-14
118:, Sakae Fujimoto, Nihon Denki Bunka Kogyo Kabush, Riken Kogaku Kogyo Kabushiki K, "Magnetic recording and reproducing machine", published 1960-09-07
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The device produced by Ricoh uses bottom side magnetic coated paper, positioned by three perforations on three pins on device. A
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The device is 12 lb 9 oz or 5.7 kg, has 11 transistors and dimensions of 10.6×5.5×14.8 inch, which equal 270×140×375 mm.
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In 1973, the 3M device for schools cost US$ 299, which would be around $ 2100 today.
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39:. Inventor Sakae Fujimoto filed the patents US3074724A and US3046357A in 1959.
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is a
Japanese dictating machine from 1959, reissued in 1974 as the
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167:RetroTech: Recordable Paper - The 3M Sound Page
135:RetroTech: Recordable Paper - The 3M Sound Page
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149:at the Radio Museum, retrieved 22 April 2018
86:, Popular Science, Ausgabe Mai 1973, S. 94
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83:For teachers – pictures that talk
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232:Products introduced in 1974
227:Products introduced in 1959
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197:Sound recording technology
192:Discontinued media formats
137:, YouTube, 12 April 2018
207:Educational technology
35:. It is also known as
222:1959 in technology
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17:Ricoh Synchrofax
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21:3M Sound Page
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37:sound paper
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116:US 3046357
97:US 3074724
66:References
43:Technology
49:tape head
163:Techmoan
33:Oklahoma
171:YouTube
23:(model
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29:627AG
25:627AA
27:and
217:3M
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74:^
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