Interesting typewriter

Good Morning, Today, I saw an interesting typewriter from the late '70s/early '80s called a Hermes 51 Level 4. It's an enormous 135-column daisy wheel with erasing tape. What is interesting about it is that it has an external disk drive, connected to it with an extremely thick cable. The drive is called a 'microdisk' according to the reference card. It allows storage of text. Looks like a scaled-down VHS tape rewinder. I have never seen any disk that might fit it. Does anyone know anything about this machine? This might be one of the first 'word processor' typewriters. It also has a green LED display and a light-and-mirror system to make sure the operator can easily read the paper as it is being printed. BTW: I also saw a Rainbow 100. Anything distinguishing it from any other CPM/MS-DOS machine? --Max Eskin (max82(a)surfree.com)