ps2write outputs Type 1 fonts in the binary pfb format, then ASCII85 encodes the binary data. There are printers "out there" that can only cope with the ASCII pfa Type 1 format, see: https://bugs.launchpad.net/ubuntu/+source/ghostscript/+bug/1025061 Attached PDF, converted through ps2write illustrates the issue.
Created attachment 8772 [details] Example file
Created attachment 8773 [details] tentatively proposed patch
Fixed in commit 01dc18e8418fc44a993840f0aeaf741929c1921a by adopting the patch (mostly).