First I use a horse hair brush and gently brush the paper surface to remove any loose particles just before printing, the brush I use is a beekeeping brush.
Haven't used compressed air and probably wouldn't as there are components inside that can be disturbed such as the CR index scale, I've used a vacuum cleaner with a long handled artist brush taped to a length of 8mm clear plastic tubing and attached to a thin vacuum cleaner crevice tool, works for me.
Brian.