sane-hpsj5s(5) SANE Scanner Access Now Easy sane-hpsj5s(5)
NAME
sane-hpsj5s - SANE backend for HP ScanJet 5S sheet-fed scanner
DESCRIPTION
The sane-hpsj5s library implements a SANE (Scanner Access Now Easy)
backend that provides access to a parallel port Hewlett-Packard ScanJet
5S scanner.
IMPORTANT: this is alpha code. Don't expect this to work correctly. Many
functions are missing, others contain errors. In some cases, your com-
puter might even hang. It cannot be excluded (although I consider it ex-
tremely improbable) that your scanner will be damaged.
LIMITATIONS: For now this backend works only on Linux. This limitation
is due to dependence on the libieee1284(3) library. If your system sup-
ports libieee1284(3) too, this backend should work. If you ported li-
bieee1284(3) for your platform, please let me know. Your system should
support EPP (or EPP+ECP) mode to operate this scanner. Future versions
will support ECP and SPP (Nibble and Byte) modes also. It's planned to
support scanners not only at daisy-chain position 0, but anywhere. Sup-
port for multiple scanners could be implemented too.
Current version implements only gray scale scanning. True Color and B/W
modes are not supported for now.
That said, TESTERS ARE WELCOME. Send your bug reports and comments to
Max Vorobiev <pcwizard@yandex.ru>.
DEVICE NAMES
This backend expects device names of the form:
special
Where special is the parallel port name in form, libieee1284(3) expects.
It seems to be system dependent. Under Linux it's parport0, parport1,
etc.
CONFIGURATION
The contents of the hpsj5s.conf file is a list of parport names that
correspond to HP ScanJet 5S scanners. Empty lines and lines starting
with a hash mark (#) are ignored. Only one device name can be listed in
hpsj5s.conf for this moment. Future versions will support daisy chain
selection.
TIPS
It seems that HP ScanJet 5S scanner uses software noise correction. This
feature, along with gamma correction and calibration, are not imple-
mented for now. They will be handled in future versions. Native reso-
lution for this scanner is 300 DPI. Other modes may present aliasing
artifacts.
FILES
/etc/sane.d/hpsj5s.conf
The backend configuration file (see also description of SANE_CON-
FIG_DIR below).
/usr/lib/x86_64-linux-gnu/sane/libsane-hpsj5s.a
The static library implementing this backend.
/usr/lib/x86_64-linux-gnu/sane/libsane-hpsj5s.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 direc-
tories are separated by a colon (`:'), under OS/2, they are sepa-
rated 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_HPSJ5S
If the library was compiled with debug support enabled, this en-
vironment variable controls the debug level for this backend.
Higher debug levels increase the verbosity of the output.
SEE ALSO
sane(7), libieee1284(3)
http://hpsj5s.sourceforge.net
http://cyberelk.net/tim/libieee1284
AUTHOR
Max Vorobiev
Man page mostly based on canon.man.
13 Jul 2008 sane-hpsj5s(5)
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