If you check the first and last printer, the array will look like this:
outputPrinter: ['monochrome', 'cloner']
You can than use this array to send it via AJAX to a web service or to further build upon it.
Checkboxes in Vue are just regular <input> elements, the only difference being that we don't really need the name attribute used in traditional forms. That's because we won't have a second page to submit our values (the page that normally reads the value using the name attributes).