sane-hpsj5s - SANE backend for HP ScanJet 5S sheet-fed scanner
library implements a SANE (Scanner Access Now Easy)
backend that provides access to a parallel port Hewlett-Packard ScanJet 5S
IMPORTANT: this is alpha code. Don't expect this to work correctly. Many
functions are missing, others contain errors. In some cases, your computer
might even hang. It cannot be excluded (although I consider it extremely
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 library. If your system supports libieee1284
too, this backend should work. If you ported libieee1284 for your platform,
please let me know. Your system should support EPP
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. Support for multiple scanners could be implemented
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
This backend expects device names of the form:
is the parallel port name in form, libieee1284 expects. It
seems to be system dependent. Under Linux it's parport0, parport1, etc.
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
for this moment. Future versions will support daisy chain
It seems that HP ScanJet 5S scanner uses software noise correction. This feature
is not implemented for now. So does gamma correction and calibration. I'll
handle it in future versions. Native resolution for this scanner is 300 DPI.
Other modes could be jagged in some ways.
- The backend configuration file (see also description of
- The static library implementing this backend.
- The shared library implementing this backend (present on
systems that support dynamic loading).
- This environment variable specifies the list of directories
that may contain the configuration file. Under UNIX, 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).
Man page mostly based on canon.man