title: Printing without print service preview
body: <p>I want to press button in my app and send pdf document to printer for printing directly (without showing system android preview from printing-framework Android 4.4). How can I do it?
  I tried to connect to printer via Socket. It was Ok, without exceptions, but my printer didn`t respond and nothing printed. </p>
  
  <p>Maybe need I setup driver on my phone for concrete printer? But how to do it and where can i get so driver?</p>
  
  <p><strong>EDITED</strong> </p>
  
  <p><a href="https://i.stack.imgur.com/OKWyg.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/OKWyg.png" alt="enter image description here"></a></p>