kopia lustrzana https://gitlab.com/sane-project/backends
rodzic
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@ -1,3 +1,9 @@
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2003-01-07 Stéphane Voltz <svoltz@wanadoo.fr>
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* doc/sane-umax_pp.man: updates and fixes
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* doc/descriptions/umax_pp.desc: change model form HP3200C to
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Scanjet 3200C
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2003-01-07 Matthew Duggan <stauff1@users.sourceforge.net>
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* backend/canon_pp-dev.c: Improve/fix detection logic.
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@ -46,7 +46,7 @@
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:mfg "Hewlett-Packard"
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:model "HP 3200C"
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:model "Scanjet 3200C"
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:interface "Parport (EPP)"
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:comment "works (relabelled 1220P and 2000P)"
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@ -25,12 +25,12 @@ Astra 2000P
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.RE
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.PP
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This backend handles 75x75, 150x150, 300x300, 600x600 and 600x1200 dpi scan
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resolutions, in color and gray levels. There is no lineart mode.
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resolutions, in color and gray levels. There is a software lineart mode.
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.PP
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These scanners share the same ASIC. Only parts such as CCD and ADC change from
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one to another. They even all reports being UMAX Astra 1220P via IEEE1284.
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There isn't direct way to recognize them properly. Under windows, model is
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set by the driver, regardless of the hardware.
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There isn't software way to recognize them properly. Under windows, model is
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set by the driver installed, regardless of the hardware.
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.PP
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.TP
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.B EPP MODE ONLY
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@ -50,7 +50,7 @@ run the backend through the network interface (See saned(1) and sane\-net(5)).
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A more relaxed solution (security wise) is to add suid bit to the frontend
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(See chmod(1)).
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The backend drop root priviledges as soon as it can, right after gaining direct
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access to IO ports.
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access to IO ports, which lessen risks when being root.
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.SH "DEVICE NAMES"
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This backend expects device names of the form:
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@ -74,7 +74,19 @@ this backend requires the base address of your port. If you are not sure which
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port your scanner is connected to, have a look at your /etc/modules.conf.
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.PP
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If you are using the linux ppdev character device, you will have to specify
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the device name, which is /dev/parport0 for the first parallel port.
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the device name, which is /dev/parport0 for the first parallel port. Check
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the permissions on /dev/paraport0, many linux distributions restrict them
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for root only access. Get sure they are like:
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.br
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crw-rw-rw- 1 root root 99, 0 mai 20 2002 /dev/parport0
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.br
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crw-rw-rw- 1 root root 99, 1 mai 20 2002 /dev/parport1
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.br
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crw-rw-rw- 1 root root 99, 2 mai 20 2002 /dev/parport2
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.br
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crw-rw-rw- 1 root root 99, 3 mai 20 2002 /dev/parport3
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.br
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You can rename any device using the
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.PP
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@ -139,14 +151,16 @@ it may fail on unkown hardware combination. Valid values are 1220, 1600
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and 2000. It is usefull only autodetection fails to detect properly your scanner
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model. If your scanner work properly but is reported wrongly, let it be that way.
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The only valid case to change the model is when your scanner produces 'black' or
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'inverted' scans. In this case you can put the model. Be aware that it will
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'inverted' scans. In this case you can put the model. Be aware that it will
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prevent autodetection.
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.PP
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Option
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.B buffer
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allows you to change the size of the scan buffer. The size must be specified in
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bytes. The default value is 2 megabytes.
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bytes. The default value is 2 megabytes. Decreasing this value will improve the
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progress status reporting in the frontend, but will stall the scan more often.
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.PP
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