USB001 Virtual printer port vs USB002 Local port vs USB003 Virtual printer port ????

Windows XP

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    After updating to XP Pro from 2K Pro, I get random printer disconnects from the local printer. The jobs sit in the printer queue with the "error" flag. After I reboot the computer, the jobs print. This never happened in 2K. Is there some new printer setting I need to know about in XP? I have to reboot every day. Just as background, this is an HP R80 connected by a parallel port to a Dell dimension desktop. I disabled all power settings. Thanks.
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USB001 Virtual printer port vs USB002 Local port vs USB003 Virtual printer port ????

Postby BobLeavitt » Sat, 25 Sep 2004 08:24:47 GMT

I have an hp1012 on USB001 and an Epson Stylus Photo 870 on USB003, both of
which are described as virtual printer ports in the printer's Properties.
Both printers print work fine.  I also see an unused USB002 described as
"Local port".  (Don't ask me how I ended up with this arrangement - I can't
really tell you.)

What is the difference between a USB local port and a USB virtual printer
port?  Should the printers be assigned to virtual printer ports?

I am trying to gain some understanding of what is going on because of a
related problem, and that is that my scanning software (Microtek ScanWizard)
tells me that no printer drivers are installed, so I cannot use the copy
function.  Nobody else to be complaining about this problem.  I am running
WinXP SP1 on a plain ol' Dell 4500.

Any guesses as to what the scanning software might be looking at to
determine whether printer drivers are installed?  I have uninstalled and
reinstalled the scanner and printers and related software so many time that
I have lost count.  I am using the latest versions of scanner and printer

Sure will appreciate any help.

Robert Leavitt

Re: USB001 Virtual printer port vs USB002 Local port vs USB003 Virtual printer port ????

Postby Chuck » Mon, 27 Sep 2004 13:12:50 GMT

This might get a bit confusing.
A virtual port is a port that is setup as a link in software to what 
ultimately & usually is a physical (local) port.
The virtual port "virtual0001" might or might not connect to USB Port 1 
It gets interesting when you swap the printers and connect them to different 
physical USB ports.
To confuse things further, just add a powered hub and connect both printers 
to the same USB port via the hub.
After checking  the printer port properties, etc.for each variation, apply 
finger to lower lip, and make appropriate blubbering sounds. Don't be 
suprised to find different and often confusing nomenclature used by 
different printer drivers.

Things can and have been worse! We used to be forced to write our own 
printer drivers in the early days of CPM, Apple dos, MSdos, and dot matrix 
Finally, Microsoft was kind enough to supply a sort of universal graphics 
driver included with DOS that accepted a data file describing the 
characteristics of a graphics and /or color printer.

Outgoing mail is AVG certified Virus Free.
Checked by AVG anti-virus system ( http://www.**--****.com/ ).
Version: 6.0.766 / Virus Database: 513 - Release Date: 9/18/2004 

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