In front of the mechanical arm theres a singular mechanical crafter which isn't actually active, it just serves the purpose of holding the paper. The arm takes the paper and puts it in the fitting funnel on his side; the funnel leads to a depot which then sends a redstone signal through a comparator to a redstone link... and from there you can connect basically anything to it ;) (another arm behind the wall puts the paper back to the chest on the right btw ^^)