If you haven't already, I would encourage you to check out lcd2eink. A quick search on this forum should bring up links to it.
It basically allows you to capture anything you see on the tablet side to the reader. You can then save the resultant images.
It is actually a pretty awesome app. Take a look at the options. You can even set it up to control the tablet side from strokes on the reader side. I've sat in full sunlight surfing the NY Times by opening the browser on the tablet then using the pen on the eink to click on links, scroll through articles, etc.
Welcome to the Edge community!