1sane-rts8891(5) SANE Scanner Access Now Easy sane-rts8891(5)
2
6 sane-rts8891 - SANE backend for rts8891 based scanners
7
9 The sane-rts8891 library implements a SANE (Scanner Access Now Easy)
10 backend that provides access to scanners based on the rts8891 ASIC.
11 The scanners that work with this backend are:
13 Vendor Model status
15 ---------------------- -----------
16 Umax Astra 4400 untested
17 Umax Astra 4450 untested
18 HP scanjet 4000c good
19 HP scanjet 4470c good
20 The options the backend supports can either be selected through command
22 line options to programs like scanimage(1) or through GUI elements in
23 xscanimage(1) or xsane(1).
24 If you notice any strange behavior, please report to the backend main‐
26 tainer or to the SANE mailing list.
27 Valid command line options and their syntax can be listed by using
29 scanimage --help -d rts8891
31 Scan Mode Options
34 --mode selects the basic mode of operation of the scanner valid choices
37 are R Color, Gray and Lineart The default mode is Color. The
38 Lineart mode is black and white only (1 bit). Grayscale will
39 produce 256 levels of gray (8 bits). Color mode allows for over
40 16 million different colors produced from 24 bits of color
41 information.
42 --resolution
45 selects the resolution for a scan. The horizontal and vertical
46 resolutions are set by the value of this option. The scanner is
47 capable of the following resolutions for the specified option
48 value:
49 Value Hor. Resolution Vert. Resolution
51 ----- --------------- -------------------
52 75 75dpi 75dpi
53 150 150dpi 150dpi
54 300 300dpi 300dpi
55 600 600dpi 600dpi
56 1200 1200dpi 1200dpi
57 --preview
60 requests a preview scan. The resolution used for that scan is 75
61 dpi and the scan area and the scan mode are as specified through
62 their options, or the default if not specified. The default
63 value for preview mode is "no".
64 --threshold
67 selects the minimum-brightness to get a white point. The
68 threshold is only used with Lineart mode scans. It is specified
69 as a percentage in the range 0..100% (in steps of 1). The
70 default value of the threshold option is 50.
71
75 The configuration file /etc/sane.d/rts8891.conf contains the usb device
76 ids of supported scanners (eg usb 0x043d 0x007c) and scanner configura‐
77 tion options. Empty lines and lines starting with a hash mark (#) are
78 ignored.
79 The options supported are allowsharing, modelnumber
81 Option
83 allowsharing
85 enables or not the sharing of the scanner between multiple fron‐
86 tends at the same time.
87 modelnumber
89 is used to force the reported model by the backend and is only
90 useful in the case of a scanner which NVRAM has been erased.
91 0 to report a HP4470c.
93 1 to report a HP4400c.
94 2 to report an Astra 4400.
95
98 /usr/lib64/sane/libsane-rts8891.a
99 The static library implementing this backend.
100 /usr/lib64/sane/libsane-rts8891.so
102 The shared library implementing this backend (present on systems
103 that support dynamic loading).
104
107 SANE_DEBUG_RTS8891 SANE_DEBUG_RTS8891_LOW SANE_DEBUG_RTS88XX_LIB
108 If the library was compiled with debug support enabled, these
109 environment variables control the debug level for this backend.
110 E.g., a value of 255 requests all debug output to be printed.
111 Smaller levels reduce verbosity.
112
115 Scanners of the same model exist with different sensors, due to lack of
116 data (ie USB logs) some sensors are better supported than others. At
117 least 75 dpi mode is working for any model. Sharing the scanner between
118 several frontends at the same time (allowsharing option) may not work
119 on some USB controllers.
120 XPA is not (yet) supported.
122
124 No bugs currently known.
125
128 sane-scsi(5), scanimage(1), xscanimage(1), xsane(1), sane(7)
129
132 This backend has been developed by Stéphane Voltz.
133 http://stef.dev.free.fr/sane/rts8891
134
137 Many thanks go to:
138 Laurent Fournier who donated me a HP4470c. Vladimir Sysoev and
139 "TheUnruly Squash" for the time they spent recording USB activ‐
140 ity and testing the experimental version on HP4400 models.
141 8 Dec 2008 sane-rts8891(5)