The bad news - the pt/pd sensitizer doesn't have the viscosity of silkscreen inks, so unlikely to work. However, the good news is that many people use a "puddle pusher" to spread sensitizer onto paper. It's made of a glass tube with "handle" and is similar to a silkscreen squeegee in terms of operation. No screen necessary, the sensitizer is spread directly on the paper with the puddle pusher.