Duplex scanning ScanTWAIN

According to het Knowledge Base and FAQ - Duplex scanning is still not supported. In my case for my HP OfficeJet Pro L7780.

Is there a possibility that HPLIP wil incorportate the ScanTWAIN drivers for HP printers as Kodak did ?

Below is my output of hp-check -t

Thanks in advance,

Paul

HP Linux Imaging and Printing System (ver. 3.9.8)
Dependency/Version Check Utility ver. 14.3

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.

Note: hp-check can be run in three modes:
1. Compile-time check mode (-c or --compile): Use this mode before compiling the
HPLIP supplied tarball (.tar.gz or .run) to determine if the proper dependencies
are installed to successfully compile HPLIP.
2. Run-time check mode (-r or --run): Use this mode to determine if a distro
supplied package (.deb, .rpm, etc) or an already built HPLIP supplied tarball
has the proper dependencies installed to successfully run.
3. Both compile- and run-time check mode (-b or --both) (Default): This mode
will check both of the above cases (both compile- and run-time dependencies).

Saving output in log file: hp-check.log

Initializing. Please wait...

---------------
| SYSTEM INFO |
---------------

Basic system information:
Linux 22065860-1010 2.6.31-16-generic #53-Ubuntu SMP Tue Dec 8 04:02:15 UTC 2009 x86_64 GNU/Linux

Distribution:
ubuntu 9.10

Checking Python version...
OK, version 2.6.4 installed

Checking PyQt 4.x version...
OK, version 4.6 installed.

Checking for CUPS...
Status: taakplanner is actief
error: Version: (Not available. CUPS may not be installed or not running.)

Checking for dbus/python-dbus...
dbus daemon is running.
python-dbus version: 0.83.0

------------------------------------
| COMPILE AND RUNTIME DEPENDENCIES |
------------------------------------

note: To check for compile-time only dependencies, re-run hp-check with the -c parameter (ie, hp-check -c).
note: To check for run-time only dependencies, re-run hp-check with the -r parameter (ie, hp-check -r).

Checking for dependency: CUPS - Common Unix Printing System...
OK, found.

Checking for dependency: CUPS DDK - CUPS driver development kit...
warning: NOT FOUND! This is an OPTIONAL/RUNTIME ONLY dependency. Some HPLIP functionality may not function properly.
To install this dependency, execute this command:
sudo aptitude install --assume-yes cupsddk cupsddk-drivers

Checking for dependency: CUPS devel- Common Unix Printing System development files...
error: NOT FOUND! This is a REQUIRED/COMPILE TIME ONLY dependency. Please make sure that this dependency is installed before installing or running HPLIP.
To install this dependency, execute this command:
sudo aptitude install --assume-yes libcupsys2-dev cupsys-bsd

Checking for dependency: CUPS image - CUPS image development files...
error: NOT FOUND! This is a REQUIRED/COMPILE TIME ONLY dependency. Please make sure that this dependency is installed before installing or running HPLIP.
To install this dependency, execute this command:
sudo aptitude install --assume-yes libcupsimage2-dev

Checking for dependency: DBus - Message bus system...
error: NOT FOUND! This is a REQUIRED dependency. Please make sure that this dependency is installed before installing or running HPLIP.
To install this dependency, execute this command:
sudo aptitude install --assume-yes libdbus-1-dev

Checking for dependency: gcc - GNU Project C and C++ Compiler...
error: NOT FOUND! This is a REQUIRED/COMPILE TIME ONLY dependency. Please make sure that this dependency is installed before installing or running HPLIP.
To install this dependency, execute this command:
sudo aptitude install --assume-yes build-essential

Checking for dependency: GhostScript - PostScript and PDF language interpreter and previewer...
OK, found.

Checking for dependency: libcrypto - OpenSSL cryptographic library...
error: NOT FOUND! This is a REQUIRED dependency. Please make sure that this dependency is installed before installing or running HPLIP.
To install this dependency, execute this command:
sudo aptitude install --assume-yes openssl

Checking for dependency: libjpeg - JPEG library...
OK, found.

Checking for dependency: libnetsnmp-devel - SNMP networking library development files...
error: NOT FOUND! This is a REQUIRED dependency. Please make sure that this dependency is installed before installing or running HPLIP.
To install this dependency, execute this command:
sudo aptitude install --assume-yes libsnmp-dev

Checking for dependency: libpthread - POSIX threads library...
OK, found.

Checking for dependency: libtool - Library building support services...
error: NOT FOUND! This is a REQUIRED/COMPILE TIME ONLY dependency. Please make sure that this dependency is installed before installing or running HPLIP.
To install this dependency, execute this command:
sudo aptitude install --assume-yes libtool

Checking for dependency: libusb - USB library...
error: NOT FOUND! This is a REQUIRED dependency. Please make sure that this dependency is installed before installing or running HPLIP.
To install this dependency, execute this command:
sudo aptitude install --assume-yes libusb-dev

Checking for dependency: make - GNU make utility to maintain groups of programs...
OK, found.

Checking for dependency: PIL - Python Imaging Library (required for commandline scanning with hp-scan)...
OK, found.

Checking for dependency: PolicyKit - Administrative policy framework...
OK, found.

Checking for dependency: PyQt 4 DBus - DBus Support for PyQt4...
OK, found.

Checking for dependency: Python DBus - Python bindings for DBus...
OK, found.

Checking for dependency: Python devel - Python development files...
error: NOT FOUND! This is a REQUIRED/COMPILE TIME ONLY dependency. Please make sure that this dependency is installed before installing or running HPLIP.
To install this dependency, execute this command:
sudo aptitude install --assume-yes python-dev

Checking for dependency: Python libnotify - Python bindings for the libnotify Desktop notifications...
OK, found.

Checking for dependency: Python XML libraries...
OK, found.

Checking for dependency: Python 2.3 or greater - Required for fax functionality...
OK, found.

Checking for dependency: Python 2.2 or greater - Python programming language...
OK, found.

Checking for dependency: Reportlab - PDF library for Python...
OK, found.

Checking for dependency: SANE - Scanning library...
OK, found.

Checking for dependency: SANE - Scanning library development files...
error: NOT FOUND! This is a REQUIRED/COMPILE TIME ONLY dependency. Please make sure that this dependency is installed before installing or running HPLIP.
To install this dependency, execute this command:
sudo aptitude install --assume-yes libsane-dev

Checking for dependency: scanimage - Shell scanning program...
OK, found.

Checking for dependency: xsane - Graphical scanner frontend for SANE...
OK, found.

----------------------
| HPLIP INSTALLATION |
----------------------

Currently installed HPLIP version...
HPLIP 3.9.8 currently installed in '/usr/share/hplip'.

Current contents of '/etc/hp/hplip.conf' file:
# hplip.conf. Generated from hplip.conf.in by configure.

[hplip]
version=3.9.8

[dirs]
home=/usr/share/hplip
run=/var/run
ppd=/usr/share/ppd/hplip/HP
ppdbase=/usr/share/ppd/hplip
doc=/usr/share/doc/hplip-doc/HTML
icon=no
cupsbackend=/usr/lib/cups/backend
cupsfilter=/usr/lib/cups/filter
drv=/usr/share/cups/drv

# Following values are determined at configure time and cannot be changed.
[configure]
network-build=yes
pp-build=yes
gui-build=yes
scanner-build=yes
fax-build=yes
dbus-build=yes
cups11-build=no
doc-build=yes
shadow-build=no
hpijs-install=yes
foomatic-drv-install=yes
foomatic-ppd-install=yes
foomatic-rip-hplip-install=no
hpcups-install=yes
cups-drv-install=yes
cups-ppd-install=no
internal-tag=3.9.8.36
restricted-build=no
ui-toolkit=qt4
qt3=no
qt4=yes
policy-kit=yes
hpijs-only-build=no
lite-build=no
udev-acl-rules=yes

Current contents of '/var/lib/hp/hplip.state' file:
# hplip.state - HPLIP runtime persistent variables.

[plugin]
installed=0
eula=0

Current contents of '~/.hplip/hplip.conf' file:
[last_used]
printer_name =
working_dir = .
device_uri = "hp:/net/Officejet_Pro_L7700?zc=RS22065860-2010"

[commands]
scan = /usr/bin/xsane -V %SANE_URI%

[installation]
date_time = 15-12-09 13:10:39
version = 3.9.8.36

[settings]
systray_messages = 2
systray_visible = 0

[fax]
email_address =
voice_phone =

[refresh]
rate = 30
enable = false
type = 1

[polling]
enable = false
device_list =
interval = 5

--------------------------
| DISCOVERED USB DEVICES |
--------------------------

No devices found.

---------------------------------
| INSTALLED CUPS PRINTER QUEUES |
---------------------------------

Officejet_Pro_L7700
-------------------
Type: Printer
Device URI: hp:/net/Officejet_Pro_L7700?zc=RS22065860-2010
PPD: /etc/cups/ppd/Officejet_Pro_L7700.ppd
PPD Description: HP Officejet Pro l7700 hpijs, 3.9.8
Printer status: printer Officejet_Pro_L7700 is niet in gebruik. ingeschakeld sinds di 15 dec 2009 09:22:21 CET
Communication status: Good

Photosmart_C6300
----------------
Type: Printer
Device URI: hp:/net/Photosmart_C6300_series?zc=RS22065860-2020
PPD: /etc/cups/ppd/Photosmart_C6300.ppd
PPD Description: HP Photosmart c6300 Series hpijs, 3.9.8
Printer status: printer Photosmart_C6300 is niet in gebruik. ingeschakeld sinds di 15 dec 2009 11:48:51 CET
Communication status: Good

----------------------
| SANE CONFIGURATION |
----------------------

'hpaio' in '/etc/sane.d/dll.conf'...
'hpaio' in '/etc/sane.d/dll.d/hplip'...
OK, found. SANE backend 'hpaio' is properly set up.

Checking output of 'scanimage -L'...
WARNING: Unhandled message: interface=org.freedesktop.DBus.Introspectable, path=/, member=Introspect
device `hpaio:/net/Officejet_Pro_L7700?zc=RS22065860-2010' is a Hewlett-Packard Officejet_Pro_L7700 all-in-one
device `hpaio:/net/Photosmart_C6300_series?zc=RS22065860-2020' is a Hewlett-Packard Photosmart_C6300_series all-in-one

---------------------
| PYTHON EXTENSIONS |
---------------------

Checking 'cupsext' CUPS extension...
OK, found.

Checking 'pcardext' Photocard extension...
OK, found.

Checking 'hpmudext' I/O extension...
OK, found.

Checking 'scanext' SANE scanning extension...
OK, found.

---------------
| USER GROUPS |
---------------

pasizo adm dialout cdrom floppy audio dip video plugdev fuse lpadmin admin sambashare

-----------
| SUMMARY |
-----------

error: 12 errors and/or warnings.

Summary of needed commands to run to satisfy missing dependencies:
sudo aptitude install --assume-yes cupsddk cupsddk-drivers
sudo aptitude install --assume-yes libcupsys2-dev cupsys-bsd
sudo aptitude install --assume-yes libcupsimage2-dev
sudo aptitude install --assume-yes libdbus-1-dev
sudo aptitude install --assume-yes build-essential
sudo aptitude install --assume-yes openssl
sudo aptitude install --assume-yes libsnmp-dev
sudo aptitude install --assume-yes libtool
sudo aptitude install --assume-yes libusb-dev
sudo aptitude install --assume-yes python-dev
sudo aptitude install --assume-yes libsane-dev

Please refer to the installation instructions at:
http://hplip.sourceforge.net/install/index.html