Provided by: libsane-common_1.2.1-1_all 
NAME
sane-hp3900 - SANE backend for RTS8822 chipset based scanners
DESCRIPTION
The sane-hp3900 library implements a SANE (Scanner Access Now Easy) backend that provides
access at least to the following USB flatbed scanners:
Model: Chipset:
------ --------
HP ScanJet 3800 RTS8822BL-03A
HP ScanJet 3970 RTS8822L-01H
HP ScanJet 4070 Photosmart RTS8822L-01H
HP ScanJet 4370 RTS8822L-02A
HP ScanJet G2710 RTS8822BL-03A
HP ScanJet G3010 RTS8822L-02A
HP ScanJet G3110 RTS8822L-02A
UMAX Astra 4900/4950 RTS8822L-01H *
BenQ 5550 RTS8823L-01E *
More details can be found on the sane-hp3900(5) backend homepage
http://sourceforge.net/projects/hp3900-series/.
This is ALPHA software. Keep your hand at the scanner's plug and unplug it, if scanner
does not start to scan. See also the BUGS section.
If you own a scanner other than the ones listed above that works with this backend, please
let us know this by sending the scanner's exact model name and the USB vendor and device
ids (e.g. from /proc/bus/usb/devices, sane-find-scanner(1) or syslog) to us. Even if the
scanner's name is only slightly different from the models mentioned above, please let us
know.
CONFIGURATION
The contents of the hp3900.conf file is a list of usb lines containing vendor and product
ids that correspond to USB scanners. The file can also contain the names of device files
that correspond to an HP 39XX scanner. Empty lines and lines starting with a hash mark
(#) are ignored. The scanners are autodetected by usb vendor_id product_id statements
which are already included into hp3900.conf. "vendor_id" and "product_id" are hexadecimal
numbers that identify the scanner. If autodetection does not work, add the device name of
your scanner to the configuration file,
FILES
/etc/sane.d/hp3900.conf
The backend configuration file (see also description of SANE_CONFIG_DIR below).
/usr/lib/x86_64-linux-gnu/sane/libsane-hp3900.a
The static library implementing this backend.
/usr/lib/x86_64-linux-gnu/sane/libsane-hp3900.so
The shared library implementing this backend (present on systems that support
dynamic loading).
ENVIRONMENT
SANE_CONFIG_DIR
This environment variable specifies the list of directories that may contain the
configuration file. On *NIX systems, the directories are separated by a colon
(`:'), under OS/2, they are separated by a semi-colon (`;'). If this variable is
not set, the configuration file is searched in two default directories: first, the
current working directory (.) and then in /etc/sane.d. If the value of the
environment variable ends with the directory separator character, then the default
directories are searched after the explicitly specified directories. For example,
setting SANE_CONFIG_DIR to "/tmp/config:" would result in directories tmp/config,
., and /etc/sane.d being searched (in this order).
SANE_DEBUG_HP3900
If the library was compiled with debug support enabled, this environment variable
controls the debug level for this backend. Higher debug levels increase the
verbosity of the output.
Example: export SANE_DEBUG_HP3900=4
SEE ALSO
sane(7), sane-usb(5), sane-find-scanner(1),
http://sourceforge.net/projects/hp3900-series/
http://jkdsoftware.dyndns.org/drupal/?q=es/books/151
AUTHOR
Jonathan Bravo Lopez <jkdsoft@gmail.com>
BUGS
Scanning is only tested with Linux/ix86/gcc. Be careful when testing on other operating
systems and especially on big-endian platforms. The scanner may get wrong data.
06 Jan 2009 sane-hp3900(5)