As Roland doesn't appear to have an exploded view document for this printer, I can't find a part number, so I don't know how you will be able to find the actual part. You can fabricate something, as it's probably just a 90 degree angle piece. As both the previous suggestions are more of a permanent solution, another possibility is to make a removable plug you can place in the switch bracket, retaining normal switch functionality. It is useful to be able be able to open the cover while printing.