A:Answer --It has a regular paper tray, so if you have 8 1/2" x 11" laser checks you can put the check stock in there.
--The printer also has a single-sheet manual/alternate feed; you can feed check stock there, as well.
--Printing a partial page (e.g., 3-check sheet with 1 or 2 already used) will depend a bit on your check writing software (e.g., Quicken).
--Unlike some HP laser printers, the Brother printer does not have a multi-sheet alternate feed; so you would have to feed check stock one sheet at a time.