Without a doubt, the Designjet 1050 plotter was a wildly successful model for HP. After all, tens of thousands of them were sold and installed throughout the United States during the early to mid-2000s. Many of those units are still in the field and in use today. But, we are approaching the threshold of their usefulness. If you have one, there is a good chance that you are experiencing the law of diminishing returns firsthand. So, considering an upgrade may make sense. Here are a few things to keep in mind regarding your old HP 1050c plotter.