Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!rutgers!att!chinet!mcdchg!ddsw1!ddsw1!point!wek
From: wek@point.UUCP (Bill Kuykendall)
Newsgroups: comp.sys.ibm.pc
Subject: HP Thinkjet brain-damaged?
Keywords: printer, RS-232C, serial
Message-ID: <[993.1]comp.ibmpc;1@point.UUCP>
Date: 13 Jul 89 17:00:05 GMT
References: <586@holin.ATT.COM>
Lines: 7

The Thinkjet has 2 graphics modes, one of which emulates an IBM printer. 
To use GRAPHICS.COM and print border characters, etc, you need to set the
printer for this mode.

It's been a long time, but I think switch #6 controls this.  One caveat --
all of the Thinkjets I've seen were parallel interface models.  Yours may
have a second switch block that I don't know about.