This kind of band is knitted with stockinette stitch so it's done without using a ribber. It can be knitted with any machine and will lay flat. You should always use less stitches than your main piece to tighten the edge a bit.
The top of this picture shows a simple stockinette band. To knit, start off with waste yarn and ravel cord. Set your row counter to 000. With your tension less one number than the main tension of your garment (MT-1), knit 7 rows. Then knit one folding row with the tension 2 numbers higher than the main garment tension (MT+2). Then knit another 7 rows with MT-1. Your row counter will be at 15. Make your hem by picking up the first row you knit in the main yarn above the ravel cord and place onto the same needles. With MT-1, knit one row to the hem band. RC016. Now pick up the stitches from your garment piece and rehang with the wrong side facing you, gathering sts to fit. Put the band sts behind the latches and the garment sts in the hooks, close the latches and push back on the needle butts to knit through. Knit one row at a loose tension (approximately MT+3) and cast off with latch tool.

The bottom of the picture shows a band knitted with fairisle. The process is the same but after you have knitted waste yarn and ravel cord, knit MT-1 for 2 rows in plain stockinette and 6 rows in fairisle, then 2 more rows plain. RC10. With MT+2, knit a folding row. RC011. Then knit 11 rows plain with a MT-1. RC022. Make your hem by picking up the first row above the ravel cord and remove the waste yarn. Knit another row MT-1. RC123. Continue with re-hanging the main garment as above, gathering in stitches to fit. Cast off as above.