NewDeal Technical Support Document 272
Believe it or not, the bug is in the version of the PostScript interpreter (it is non-Adobe) that is in ROM in the printer. The interpreter chokes on a bit of PostScript code that the Adobe reference guide says should be just fine, and which works fine on real Adobe printers.
Our PostScript driver allows for PostScript patch files to fix problems that crop up after we ship the driver. Users that have this printer should create a file called DEVPATCH.PS in their SYSTEM directory. This file should contain the following piece of ASCII text:
GWDict begin /CFN {dup 64 string cvs length dup 1 add string /ts xdef string cvs 1 exch ts 3 1 roll putinterval ts 0 (_) putinterval ts cvn} bdef end