Question : Problem printing in Okidata Microdyne 420 Printer using Red Hat Linux 4.5, Fonts changed.

I am having problems printing in an Okidata Microdyne 420 printer using Red Hat Linux 4.5.  Fonts get distorted/changed even when printing from Command line.  We tested printer attached to Windows PC and works fine.  For some reason, Linux is changing fonts.

Answer : Problem printing in Okidata Microdyne 420 Printer using Red Hat Linux 4.5, Fonts changed.

Go into your /etc/cups/whateverprinteryouraremodifying.ppd

open it up in a editor,
go down to the bottom there should be a line called:
DefaultFont: Courier

change that to:
DefaultFont: Times

test, if that doesn't do the result you want try:
DefaultFont: Helvetica