Robert - There's a way to identify the native printer fonts for the Printronix that can be used in a Crystal form. There's a feature for legacy modules called Printer Preferences under Library Master / Setup. Select it then select the Printronix driver. Now uncheck the _Enable Grapahics Printing for this Printer_ then check the _Show Native Printer Fonts Only_ box.
Under the Normal Font heading, click dropdown for Name and you will see the native printer fonts. Note your choices carefully and/or screenshot them (use the 5-second delay feature if you're a SnagIt user). Click Cancel to close Printer Preferences. No need to click Accept as these choices are for legacy modules only.
Now in the Crystal form, you need to format all fields with 1 of these native fonts. Ctrl-A prolly still works to select all (well most) but there will definitely be some manual resizing of fields required. Then test it. You will need to play print around with it. Installing the Generic/Text driver is an option also like @GregStiles said.