[cups.general] multiple usb printers, same device uri

[Michael Sweet]

Alex Chejlyk wrote:
>> I have a situation where we have three Epson 1800R printers. One is for glossy, one for 11x17 and one for 8.5x11. The printers are named epsR1800-1, epsR1800-2, epsR1800-3. What is happening is that print jobs are being randomly distributed between these printers. They are acting like a pool, but we don't want that. Any suggestions?
>>
>> Thanks,
>>
>> A
> 
> 
> I have tried using the DeviceURI?serial=
> 
> lpadmin -p Eps1800R-3 -E -v \ usb://EPSON/Stylus%20Photo%20R1800?serial=HQ0140605221139530
> 
> but the message is the printer cannot connect.
> 
> What am I doing wrong?

Epson doesn't advertise or support serial numbers via USB... :(

About all you can do is attach the printers to a network print
server so they'll have unique URIs.  Even using "file:/dev/usb/lpN"
won't work since Linux randomly assigns device numbers to USB
printers.

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Michael R Sweet                        Senior Printing System Engineer