Changing the paper is finicky, it can take several tries. Just try to roll it tight on the roll and then roll the paper slowly into the printer. You will here a beep and it will grab the paper. It will then take a bit to check it to see if it is straight, if not, it will kick it out and you try again.
Once the paper loads, it will confirm the paper type. If you have put in a different type, make sure to select that paper from the list. It makes a big difference in performance and smearing of your print.
The plotter was moved so that it could be hooked up directly to the Makersmiths desktop computer in Purcellville, hopefully eliminating a lot of the driver installation and setup issues that people were having. A summary of the steps to print from Inkscape, though the same steps can be applied to print from any other application, are available below.
If you are bringing a file from another computer that you want to print, PDF files are recommended.
To plot to the plotter from your own laptop, see the Poster at Purcellville. There are also some helpful files here regarding changing the paper.
https://support.hp.com/us-en/drivers/selfservice/hp-designjet-t610-printer-series/3339415
You will also want the HP Instant Print software. It makes printing Certain files very easy. (PDF or image formats)
Microsoft Products WARNING: I am a big fan of Microsoft Publisher, but when you print from any Microsoft product you will be limited to about 4 feet, sometimes less. I don't know why, but it has always been the case. To get around this Look at the procedure at the bottom of this page.
https://support.hp.com/us-en/product/hp-designjet-t610-printer-series/3339415/how-to
Files:
hpdjt1100serieswx64gl.exe - Driver Software (Yes, the 1100 and 610 use the same driver)
HPInstantPrintingApp.exe - Easy App for printing to the plotter.