Third-party ribbons for Imagewriters are still in production. Probably there are enough old dot-matrix printers still in use for carbon-copy purposes to make it worth it… likely in industrial settings where upgrading one aspect necessitates unacceptable downtime and maybe having to expensively upgrade the whole rest of the process as well. Ghostscript drivers for them exist (no color support but whatever,) as do USB-serial adapters.
