1sane-epson(5)            SANE Scanner Access Now Easy            sane-epson(5)
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NAME

6       sane-epson - SANE backend for EPSON scanners
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DESCRIPTION

9       The  sane-epson  library  implements  a  SANE (Scanner Access Now Easy)
10       backend that provides access to Epson flatbed scanners.  Some functions
11       of  this backend should be considered beta-quality software! Most func‐
12       tions have been stable for a long time, but of course  new  development
13       can  not and often times will not function properly from the very first
14       day. Please report any strange behavior to the maintainer of the  back‐
15       end.
16
17       At present, the following scanners are known to work with this backend:
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19              Model:                       Connection Type
20              ---------------------------  -------------------
21              GT-5000                      SCSI, parallel
22              GT-6000                      parallel
23              GT-6500                      SCSI (use only the line "scsi" in epson.conf)
24              ActionScanner II             SCSI, parallel
25              GT-7000                      SCSI
26              Perfection 636               SCSI
27              Perfection 636U              USB
28              Perfection 610               USB
29              Perfection 640               USB
30              Perfection 1200S             SCSI
31              Perfection 1200U             USB
32              Perfection 1240              USB, SCSI
33              Perfection 1640              USB, SCSI
34              Perfection 1650              USB
35              Perfection 1660              USB
36              Perfection 2400              USB
37              Perfection 2450              USB, IEEE-1394
38              Expression 636 / GT-9500     SCSI
39              Expression 1600              USB, SCSI, IEEE-1394
40              Expression 1680              USB, SCSI, IEEE-1394
41              CX-3200                      USB
42              CX-5200                      USB
43              and many more. The official list is on the Sane web site.
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45       For other scanners the software  may or may not work.  Please send mail
46       to the backend author (khk@khk.net) to report success with scanners not
47       on the list or problems with scanners that are listed.
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OPTIONS

50       The options the backend supports can either be selected through command
51       line options to programs like scanimage or through GUI elements in pro‐
52       grams like xscanimage or xsane.
53
54       Valid command line options and their syntax can be listed by using
55              scanimage --help -d epson
56       Not all devices support all options.
57
58       Scan Mode
59              The  --mode  switch  selects  the basic mode of operation of the
60              scanner. Valid choices are Binary, Gray and Color.   The  Binary
61              mode  is  black  and white only, Gray will produce 256 levels of
62              gray or more depending on the scanner and  Color  means  24  bit
63              color mode or more depending on the scanner.  Some scanners will
64              internally use 36 bit color, their  external  interface  however
65              may only support 24 bits.
66
67              The  --depth  option selects the bit depth the scanner is using.
68              This option is only available for  scanners  that  support  more
69              than  one  bit  depth.  Older  scanners will always transfer the
70              image in 8bit mode. Newer scanners  allow  to  select  either  8
71              bits,  12  or  14  bits per color channel. For a color scan this
72              means an effective color depth of 36 or 42 bits over  all  three
73              channels. The valid choices depend on the scanner model.
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75              The  --halftoning switch selects the mode that is used in Binary
76              mode. Valid  options  are  "None",  "Halftone  A  (Hard  Tone)",
77              "Halftone  B  (Soft Tone)", "Halftone C (Net Screen)", "Dither A
78              (4x4 Bayer)", "Dither  B  (4x4  Spiral)",  "Dither  C  (4x4  Net
79              Screen)",  "Dither  D (8x4 Net Screen)", "Text Enhanced Technol‐
80              ogy", "Download pattern A", and "Download pattern B".
81
82              The --dropout switch selects the so called dropout  color.  Vald
83              options  are None, Red, Green and Blue. The default is None. The
84              dropout color is used for monochrome scanning  and  selects  the
85              color  that  is  not  scanned.  This can be used to e.g. scan an
86              original with a colored background.
87
88              The --brightness switch controls the  brightness  of  the  scan.
89              Valid options are integer values from -3 to 3. The default is 0.
90              The larger the brightness value, the brighter the image gets. If
91              a  user  defined table for the gamma correction is selected, the
92              brightness parameter is not available.
93
94              The --sharpness switch sets the sharpness  of  the  image  data.
95              Valid  options  are integer values from -2 to 2, with -2 meaning
96              "Defocus",  -1  "Defocus  slightly",  0  "Normal",  1   "Sharpen
97              slightly" and 2 "Sharpen".
98
99              The  --gamma-correction  switch  controls the scanner's internal
100              gamma correction. Valid options are "Default",  "User  defined",
101              "High  density  printing"  "Low density printing" and "High con‐
102              trast printing".
103
104              The --color-correction switch controls  the  scanner's  internal
105              color  correction  function.  Valid options are "No Correction",
106              "Impact-dot printers", "Thermal  printers",  "Ink-jet  printers"
107              and "CRT monitors". The default is "CRT monitors".
108
109              The  --resolution switch selects the resolution for a scan. Some
110              EPSON scanners will scan in any resolution  between  the  lowest
111              and highest possible value. The list reported by the scanner can
112              be displayed using the "--help -d epson" parameters  to  scanim‐
113              age.
114
115              The  --mirror  option  controls the way the image is scanned. By
116              reading the image data from right to left the image is mirrored.
117              Valid options are "yes" and "no". The default is "no".
118
119              The  --speed  option  can  improve  the scan speed in monochrome
120              mode. Valid options are "yes" or "no",  the  "yes"  option  will
121              speed up the scan if this option is supported.
122
123              The --auto-area-segmentation switch activates the automatic area
124              segmentation for monochrome  scans.  The  scanner  will  try  to
125              determine  which  areas  are  text and which contain images. The
126              image areas will be halftoned, and the text  will  be  improved.
127              Valid options are "yes" and "no". The default is "yes".
128
129              The  --gamma-table  parameter  can  be  used  to download a user
130              defined gamma table. The option takes 256 values from the  range
131              0-255. In color mode this option equally affects the red, green,
132              and blue channel.
133
134              The --red-gamma-table parameter can be used to download  a  user
135              defined  gamma  table for the red channel. The valid options are
136              the same as for --gamma-table.
137
138              The --green-gamma-table parameter can be used to download a user
139              defined gamma table for the green channel. The valid options are
140              the same as for --gamma-table.
141
142              The --blue-gamma-table parameter can be used to download a  user
143              defined  gamma table for the blue channel. The valid options are
144              the same as for --gamma-table.
145
146              The color correction coefficients --cct-1  --cct-2  --cct-3  ...
147              --cct-9  will install color correction coefficients for the user
148              defined color correction. Values are specified  as  integers  in
149              the range -127..127.
150
151              The --preview option requests a preview scan. The frontend soft‐
152              ware automatically selects a low resolution. Valid  options  are
153              "yes" and "no". The default is "no".
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155              The --preview-speed options will increase the scan speed if this
156              is supported by the scanner. Valid options are "yes"  and  "no",
157              the default is "no".
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159
160              The  geometry options -l -t -x -y control the scan area: -l sets
161              the top left x coordinate, -t the  top  left  y  coordinate,  -x
162              selects the width and -y the height of the scan area. All param‐
163              eters are specified in millimeters.
164
165              The --quick-format option lets the user select a scan area  with
166              predefined  sizes. Valid parameters are "CD", "A5 portrait", "A5
167              landscape", "Letter", "A4" and  "max".  The  default  is  "max",
168              which selects the largest possible area.
169
170              The  --source  option  selects  the  scan  source. Valid options
171              depend on the installed options. The default is "Flatbed".
172
173              The --auto-eject option will eject a page  after  scanning  from
174              the document feeder.
175
176              The  --film-type option will select the film type for scans with
177              the transparency unit. This option is only activated if the  TPU
178              is  selected  as  scan source. Valid options are "Negative Film"
179              and "Positive Film".
180
181              The --focus-position option selects the focus position  for  all
182              scans. Valid options are "Focus 2.5mm above glass" and "Focus on
183              glass". The focus on the 2.5mm point above the glass  is  neces‐
184              sary  for  scans with the transparency unit, so that the scanner
185              can focus on the film if one of the film holders is used.   This
186              option is only functional for selected scanners, all other scan‐
187              ners will ignore this option.
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190

CONFIGURATION FILE

192       The configuration file /etc/sane.d/epson.conf specifies  the  device(s)
193       that the backend will use. Possible connection types are:
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195       SCSI   This  is the default, and if nothing else is specified the back‐
196              end software will open a given path as SCSI device. More  infor‐
197              mation about valid syntax for SCSI devices can be found in sane-
198              scsi(5).
199              Usually SCSI scanners are configured with a line "scsi EPSON" in
200              this  file.  In  some  cases it may be necessary to only use the
201              string "scsi" (e.g. for the GT-6500).
202
203       PIO - Parallel Interface
204              The parallel interface can be configured in two ways: An integer
205              value starting at the beginning of a line will be interpreted as
206              the IO address of the parallel port. To make it clearer  that  a
207              configured IO address is a parallel port the port address can be
208              preceded by the string "PIO". The PIO connection does not use  a
209              special device file in the /dev directory. The IO address can be
210              specified in hex mode (prefixed with "0x").
211
212       USB    A device file that is preceded by the string "USB" is treated as
213              a  scanner  connected  via the Universal Serial Bus. The correct
214              special device file has to be created prior  to  using  it  with
215              Sane.  See  the USB documentation for more information about how
216              to set up the USB subsystem and the required device files.
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FILES

219       /usr/lib*/sane/libsane-epson.a
220              The static library implementing this backend.
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222       /usr/lib*/sane/libsane-epson.so
223              The shared library implementing this backend (present on systems
224              that support dynamic loading).
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ENVIRONMENT

227       SANE_DEBUG_EPSON
228              If  the  library  was  compiled with debug support enabled, this
229              environment variable controls the debug level for this  backend.
230              E.g.,  a  value  of 128 requests all debug output to be printed.
231              Smaller levels reduce verbosity.
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233
234       SANE_EPSON_CMD_LVL
235              This allows to override the function or command level  that  the
236              backend uses to communicate with the scanner. The function level
237              a scanner supports is determined during  the  initialization  of
238              the device. If the backend does not recognize the function level
239              reported by the scanner it will default to  function  level  B3.
240              Valid  function  levels  are A1, A2, B1, B2, B3, B4, B5, B6, B7,
241              B8, D1 and F5. Use this feature only if you know  what  you  are
242              doing!
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244

SEE ALSO

246       sane-scsi(5), scanimage(1), xscanimage(1), xsane(1)
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BUGS

250       None :-) At least none are currently known.
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252

UNSUPPORTED DEVICES

254       The  backend  may  be  used with Epson scanners that are not yet listed
255       under the list of supported devices. A scanner that is  not  recognized
256       may  default  to  the function level B3, which means that not all func‐
257       tions that the scanner may be capable of are accessible.
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259       If the scanner is not even recognized as an Epson scanner this is prob‐
260       ably because the device name reported by the scanner is not in the cor‐
261       rect format. Please send this information  to  the  backend  maintainer
262       (email  address  is  in  the  AUTHOR section of this man page or in the
263       AUTHORS file of the SANE distribution).
264
265       The Perfection 600, Perfection 650, Perfection 660, Perfection 1250 and
266       Perfection 1260 are not supported by this backend.
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AUTHOR

270       The  package is actively maintained by Karl Heinz Kremer (khk@khk.net).
271       The software is based on work by Christian Bucher and Kazuhiro Sasayama
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275sane-backends 1.0.18              27-Dec-2000                    sane-epson(5)
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