$ lsmod | grep usblp
usblp                  15136  0

$ ls -l /dev/usb/lp* /dev/bus/usb/*/*
crw-rw-r-- 1 root root 189,   0 2009-10-14 11:05 /dev/bus/usb/001/001
crw-rw-r-- 1 root root 189,   5 2009-10-14 18:55 /dev/bus/usb/001/006
crw-rw-r-- 1 root root 189, 128 2009-10-14 11:05 /dev/bus/usb/002/001
crw-rw-r-- 1 root root 189, 129 2009-10-14 11:05 /dev/bus/usb/002/002
crw-rw-r-- 1 root root 189, 130 2009-10-14 11:05 /dev/bus/usb/002/003
crw-rw---- 1 root lp   189, 135 2009-10-14 18:59 /dev/bus/usb/002/008
crw-rw-rw- 1 root lp   180,   0 2009-10-14 18:59 /dev/usb/lp0

$ sudo /usr/lib/cups/backend/usb
DEBUG: list_devices_libusb
DEBUG: usb_find_busses=2
DEBUG: usb_find_devices=6
direct usb://HP/LaserJet%201000 "HP LaserJet 1000" "HP LaserJet 1000" 
"MFG:Hewlett-Packard;MDL:hp LaserJet 1000;CMD:ZJS;CLS:PRINTER;DES:hp LaserJet 
1000;FWVER:20011207;" ""

$ /usr/lib/cups/backend/hp
bash: /usr/lib/cups/backend/hp: No such file or directory

$ lpstat -v
device for HP_LaserJet_1000: usb://HP/hp%20LaserJet%201000?serial=?

$ lpstat -p
printer HP_LaserJet_1000 is idle.  enabled since Wed 14 Oct 2009 06:59:50 PM 
CEST
        If you have more than one HP LaserJet 1000 printer connected to this 
machine, please unload (and blacklist) the "usblp" kernel module as otherwise 
CUPS will not be able to distinguish your printers.

$ lsusb
Bus 001 Device 006: ID 05ac:1301 Apple, Inc. iPod Shuffle 2.Gen
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 003: ID 046a:0011 Cherry GmbH G83 (RS 6000) Keyboard
Bus 002 Device 002: ID 045e:0047 Microsoft Corp. IntelliMouse Explorer 3.0
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub

** Attachment added: "lpinfo -l -v (doesn't exit)"
   http://launchpadlibrarian.net/33666385/lpinfo.txt

-- 
HP LaserJet 1000 still doesn't print
https://bugs.launchpad.net/bugs/450513
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