While this is not one of the 7200 scanners claimed by VueScan[1], it might be worth talking to those folks. With their experience they might be able to reverse-engineer the protocol.
If not (and I'm sure this is not an acceptable idea to a purist like OP) I would consider using a good consumer-grade scanner and post-process with Topaz AI[2], which produces absolutely astonishing results in my experience. Yes, maybe it is inventing the pixels it adds, but they look like the right pixels nonetheless.
If not (and I'm sure this is not an acceptable idea to a purist like OP) I would consider using a good consumer-grade scanner and post-process with Topaz AI[2], which produces absolutely astonishing results in my experience. Yes, maybe it is inventing the pixels it adds, but they look like the right pixels nonetheless.
[1] https://www.hamrick.com/vuescan/supported-scanners.html
[2] https://www.topazlabs.com/topaz-photo-ai