Uinkit overhead projector film for inkjet

This is the overhead projector film I use for my cyanotype negatives: https://www.amazon.com/dp/B09WRJ2HNF?ref_=ppx_hzsearch_conn_dt_b_fed_asin_title_4&th=1.

To find the printing side, orient the paper so the rounded corner is in the bottom right. The side you are looking at is the side to be printed on.

My printer cannot print directly on the transparency. It needs an opaque backing in order to print properly. I usually tape a piece of paper to the film.