#!/bin/bash
set -e

usage() {
    echo "USAGE: $0 FILE.pdf"
    exit
}

if [ "$1" != *.pdf ]; then
    usage
fi

DEVICE='pixma:04A9178A_31A16C'
FORMAT='png'
RES=300

scanimage -d "$DEVICE" --format="$FORMAT" --resolution "$RES" | convert - "$1"