```ruby
require "a2_printer"

class PrintProcessor::A2Raw
  def width
    384
  end

  def process(data)
    bytes = []
    rotate_180(data["pixels"]).each_slice(8) { |s| bytes << ("0" + s.join).to_i(2) }
    
    printer_commands = StringIO.new
    printer = A2Printer.new(printer_commands)
    printer.begin
    printer.print_bitmap(data["width"], data["height"], bytes)
    printer.feed(3)
    printer_commands.rewind
    printer_commands.read
  end

  private

  def rotate_180(pixels)
    pixels.reverse
  end
end```

Use a heat time that's better for v4 printers.
user
```ruby
require "a2_printer"

class PrintProcessor::A2Raw
  def width
    384
  end

  def process(data)
    bytes = []
    rotate_180(data["pixels"]).each_slice(8) { |s| bytes << ("0" + s.join).to_i(2) }
    
    printer_commands = StringIO.new
    printer = A2Printer.new(printer_commands)
    printer.begin(240)
    printer.print_bitmap(data["width"], data["height"], bytes)
    printer.feed(3)
    printer_commands.rewind
    printer_commands.read
  end

  private

  def rotate_180(pixels)
    pixels.reverse
  end
end```
assistant