/etc/sane.d/plustek_pp.conf is in libsane-common 1.0.25+git20150528-1ubuntu2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 | # Plustek-PP SANE Backend configuration file
# For use with Plustek parallel-port scanners
#
#
# user either [direct] or [kernel] to access the scanner
# when using [kernel], device specifies the device-node, which is created
# by the kernel-module loader (applies only to Linux)
# when using [direct], device is used to set the parallel-port base address
# or a device-name suitable for libieee1284, i.e. parport0
#
#[direct]
#device 0x378
#
# example for accessing the scanner via libieee1284
#
[direct]
device parport0
#
# leave the default values as specified in /etc/modules.conf
#
option warmup -1
option lOffOnEnd -1
option lampOff -1
# model override switch, mostly for cosmetic changes, if the autodetection
# does not work or could not work correctly
#option mov 7
#
# example for accessing the scanner via the kernel module
#
#[kernel]
#device /dev/pt_drv
#
#option warmup -1
#option lOffOnEnd -1
#option lampOff -1
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