sudo pacman -S hplip
sudo pacman -S cups dbus-python sane python-imaging python-notify rpcbind python2-qt pygobject hplip-plugin
sudo pacman -S python qt gnomesu gksu pyqt3 python2-pyqt xsane
sudo gedit /etc/sane.d/dll.conf
hpaio
sudo gedit /etc/modprobe.d/modprobe.conf
blacklist usblp
sudo ln -s /usr/bin/python2.7 /usr/local/bin/python
sudo hp-setup -i
sudo sane-find-scanner
sudo gedit /etc/sane.d/hpaio.conf
usb 0x03f0 0x4e17
sudo gedit /etc/udev/rules.d/53-sane.rules
#HP Color LaserJet CM1312 MFP
SUBSYSTEM=="usb", ATTRS{idVendor}=="03f0", ATTRS{idProduct}=="4e17", MODE="0666", GROUP="scanner"
sudo gedit /etc/udev/rules.d/10-usbprinter.rules
ATTR{idVendor}=="03f0", ATTR{idProduct}=="4e17", MODE:="0666", GROUP:="lp"
sudo gedit /etc/rc.conf
DAEMONS=(hwclock syslog-ng network netfs crond dbus gdm @cupsd)

Scan job failed-Required plug-in not found... Please run hp-plugin (as root) to install the required plug-in

[root@myhost archie]# hp-plugin
HP Linux Imaging and Printing System (ver. 3.11.7)
Plugin Download and Install Utility ver. 2.1
Copyright (c) 2001-9 Hewlett-Packard Development Company, LP
This software comes with ABSOLUTELY NO WARRANTY.
This is free software, and you are welcome to distribute it
under certain conditions. See COPYING file for more details.
/Checking for network connection...
Downloading configuration file from: http://hplip.sf.net/plugin.conf
Checking for network connection...
Downloading plug-in from: http://www.openprinting.org/download/printdriver/auxfiles/HP/plugins/hplip-3.11.7-plugin.run
Receiving digital keys: /usr/bin/gpg --no-permission-warning --keyserver pgp.mit.edu --recv-keys 0xA59047B9
error:  ERROR: Plug-in file does not match its digital signature.  File may have been corrupted or altered.  Error code: 2 

[archie@myhost ~]$ pacman -Ss pyqt
extra/eric 5.1.5-1
    A full-featured Python 3.x and Ruby IDE in PyQt4
extra/eric4 4.4.17-1
    A full-featured Python 2.x and Ruby IDE in PyQt4
extra/pyqt 4.8.5-1 [установлен]
    A set of Python bindings for the Qt toolkit
extra/python2-pyqt 4.8.5-1
    PyQt: A set of Python2 bindings for the Qt toolkit
community/pyqt3 3.18.1-9
    A set of Python bindings for the Qt3 toolkit
[archie@myhost ~]$ sudo pacman -S pyqt3 python2-pyqt

Checking for dependency: Python libnotify - Python bindings for the libnotify Desktop notifications...
warning: NOT FOUND! This is an OPTIONAL/RUNTIME ONLY dependency. Some HPLIP functionality may not function properly.
Checking for dependency: Reportlab - PDF library for Python...
warning: NOT FOUND! This is an OPTIONAL/RUNTIME ONLY dependency. Some HPLIP functionality may not function properly.
Printer status: printer HP_Color_LaserJet_CM1312_MFP is idle.  enabled since Вт. 13 сент. 2011 09:38:01
error: Required plug-in status: Not installed
Communication status: Good