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

6       sane-umax_pp  - SANE backend for Umax Astra parallel port flatbed scan‐
7       ners
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DESCRIPTION

10       The sane-umax_pp library implements a SANE (Scanner  Access  Now  Easy)
11       backend  that  provides  access to Umax parallel port flatbed scanners.
12       The following scanners work with this backend:
13
14              Model:
15              --------------------
16              Astra 610P
17              Astra 1220P
18              HP3200C
19              Astra 1600P
20              Astra 2000P
21              Genius ColorPage-Life Pro
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23       This backend handles 75x75, 150x150, 300x300, 600x600 and 600x1200  for
24       1220P/1600P/2000P dpi scan resolutions, and 75x75, 150x150, 300x300 and
25       300x600 for 610P. In color and gray levels, there is a software lineart
26       mode.
27
28       The new generation models share a newer version of the 610P ASIC embed‐
29       ded in an EPAT chip.  Only parts such as CCD and ADC change from one to
30       another.  They  even  all  reports being UMAX Astra 1220P via IEEE1284.
31       There isn't software way to recognize  them  properly.  Under  windows,
32       model is set by the driver installed, regardless of the hardware.
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34       EPP/ECP MODES ONLY
35              The  current version of the backend uses only EPP or ECP mode to
36              communicate with the scanner. PS/2 mode isn't  implemented.  The
37              610P  only use SPP. It is recommended that you set your parallel
38              port to EPP in BIOS with the current version  of  this  backend.
39              You can leave it to ECP or ECP+EPP, but in this case you may not
40              use ppdev but only direct hardware access if  you  have  to  use
41              ECP.   ECPEPP will only work if you use a 2.4 or 2.6 kernel with
42              ppdev character device support.
43
44       This backend does support parport sharing only if  you  have  a  kernel
45       with ppdev support.
46
47       Note  that  if  you  don't  use the ppdev character device, the backend
48       needs to run as root. To allow user access to the scanner run the back‐
49       end  through  the  network interface (See saned(8) and sane-net(5)).  A
50       more relaxed solution (security wise) is to add suid bit to  the  fron‐
51       tend  (See  chmod(1)).  The backend drop root priviledges as soon as it
52       can, right after gaining direct access to IO ports, which lessen  risks
53       when being root.
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55

DEVICE NAMES

57       This backend expects device names of the form:
58
59              port value
60
61       Where value is :
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63
64              auto   autodetect all parallel ports and probe them for scanner
65
66              safe-auto
67                     autodetect all parallel ports and probe them for scanner,
68                     but does not try direct hardware access
69
70              /dev/ppi0
71                     uses *BSD ppi device, depending on the number  of  avail‐
72                     able parallel port, you have to use /dev/ppi1, /dev/ppi2,
73                     ...
74
75              /dev/parport0
76                     uses linux ppdev  device,  depending  on  the  number  of
77                     available  parallel  port, you have to use /dev/parport1,
78                     /dev/parport2, ...
79
80              0x378  does direct hardware access on the given  address.  Usual
81                     values  are 0x378, 0x278, 0x3BC In this case, you have to
82                     run the  scanner  as  root  (*BSD  and  linux),  or  with
83                     'IOPL=yes' on OS/2
84
85       NOTE:  in all cases, you must have sufficient priviledges to get access
86       to the chosen device or address. Depending on  the  security  settings,
87       devices may not be available for all users.  You have to change permis‐
88       sions on the dev/ppi* or /dev/parport* devices.
89
90       You can rename any device using the
91
92              name devname
93              model model
94              vendor vendor
95
96       options. These options apply to the last port option.
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98

CONFIGURATION

100       Please make sure to edit umax_pp.conf before you use the backend.
101
102       The contents of the umax_pp.conf file is a list of options  and  device
103       names that correspond to Umax scanners.  Empty lines and lines starting
104       with a hash mark (#) are ignored.
105
106       The  eight  options  supported  are  red-gain,  green-gain,  blue-gain,
107       red-offset, green-offset, blue-offset, astra, and buffer.
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109       Options  red-gain  ,  green-gain  and blue-gain allow you to adjust the
110       sensitivity of your scanner for the given color. Values  range  from  0
111       (lowest  gain)  to  15  (highest).  If the advanced option "Gain" isn't
112       checked in the frontend, the backend does automatic  gain  calibration,
113       and do not use user provided values.
114
115
116       Options  red-offset  , green-offset and blue-offset allow you to adjust
117       the offset of your scanner for the given color.  Values  range  from  0
118       (lowest offset) to 15 (highest).
119
120       Option  astra  allows  you to change the model of your scanner. Current
121       auto detection is based on side effects on scanning  when  using  1220P
122       command  set on other models, so it may fail on unknown hardware combi‐
123       nation. Valid values are 610, 1220, 1600 and 2000. It  is  useful  only
124       when autodetection fails to detect properly your scanner model. If your
125       scanner work properly but is reported wrongly, let it be that way.  The
126       only  valid  case  to  change  the  model is when your scanner produces
127       "black" or "inverted" scans. In this case you can  put  the  model.  Be
128       aware that it will prevent scanner model autodetection.
129
130       Option  buffer  allows  you  to change the size of the scan buffer. The
131       size must be specified in bytes. The  default  value  is  2  megabytes.
132       Decreasing  this  value  will improve the smoothness of progress bar in
133       the frontend, but will stall the scan more often.
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135

FILES

137       /etc/sane.d/umax_pp.conf
138              The  backend  configuration  file  (see  also   description   of
139              SANE_CONFIG_DIR below).
140
141       /usr/lib64/sane/libsane-umax_pp.a
142              The static library implementing this backend.
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144       /usr/lib64/sane/libsane-umax_pp.so
145              The shared library implementing this backend (present on systems
146              that support dynamic loading).
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148

ENVIRONMENT

150       SANE_CONFIG_DIR
151              This environment variable specifies the list of directories that
152              may contain the configuration file.  Under UNIX, the directories
153              are separated by a colon (`:'), under OS/2, they  are  separated
154              by a semi-colon (`;').  If this variable is not set, the config‐
155              uration file is searched in two default directories: first,  the
156              current working directory (".") and then in /etc/sane.d.  If the
157              value of the environment variable ends with the directory  sepa‐
158              rator character, then the default directories are searched after
159              the explicitly  specified  directories.   For  example,  setting
160              SANE_CONFIG_DIR  to  "/tmp/config:"  would result in directories
161              "tmp/config", ".", and "/etc/sane.d"  being  searched  (in  this
162              order).
163
164       SANE_DEBUG_UMAX_PP
165              If  the  library  was  compiled with debug support enabled, this
166              environment variable controls the debug level for this  backend.
167              E.g.,  a  value  of 128 requests all debug output to be printed.
168              Smaller levels reduce verbosity.
169
170
171              level   debug output
172              ------- ------------------------------
173               0       nothing
174               1       errors
175               2       warnings & minor errors
176               3       additional information
177               4       debug information
178               5       code flow (not supported yet)
179               6       special debug information
180
181       SANE_DEBUG_UMAX_PP_LOW
182              This variable sets the debug level for the  SANE  interface  for
183              the  Umax  ASIC. Note that enabling this will spam your terminal
184              with some million lines of debug output.
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186
187              level   debug output
188              ------- -------------------------------
189               0       nothing
190               1       errors
191               8       command blocks
192               16      detailed code flow
193               32      dump datafiles
194               255     everything
195

SEE ALSO

197       sane(7), sane-net(5), saned(8)
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199
200       For latest bug fixes and information see
201              http://umax1220p.sourceforge.net/
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203

AUTHOR

205       Stéphane Voltz <stef.dev@free.fr>
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207

CREDITS

209       Support for the 610P has been made possible thank to an hardware  dona‐
210       tion by William Stuart.
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212

BUG REPORTS

214       If  something doesn't work, please contact me. But I need some informa‐
215       tion about your scanner to be able to help you...
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217
218       SANE version
219              run "scanimage -V" to determine this
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221       the backend version and your scanner hardware
222              run "SANE_DEBUG_UMAX_PP=255 scanimage -L 2>log" as root. If  you
223              don't  get any output from the umax_pp backend, make sure a line
224              "umax_pp" is included into your /etc/sane.d/dll.conf.   If  your
225              scanner  isn't detected, make sure you've defined the right port
226              address, or the correct device in your umax_pp.conf.
227
228       the name of your scanner/vendor
229              also a worthy information. Please also include the optical reso‐
230              lution  and  lamp type of your scanner, both can be found in the
231              manual of your scanner.
232
233       any further comments
234              if you have comments about the documentation (what could be done
235              better),  or  you  think I should know something, please include
236              it.
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240                                  14 Jul 2008                  sane-umax_pp(5)
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