APPARATUS FOR APPLYING A CONVERSION LIQUID TO ELECTROSTATIC COPY MATERIAL

A length of developed electrostatic copy material is advanced to a conversion zone with the image side facing downwardly and is received in a gap defined by adjacent peripheral surfaces of upper and lower rollers, the lower roller being partially immersed in a conversion liquid contained in a trough. This lower roller is driven such that its linear peripheral speed is approximately three times the speed of the copy material whereupon such roller develops a film of the conversion liquid on its peripheral surface and applies such film as a metered layer to the underside of the copy material as the same passes through said gap. The copy material is then fed to the nip of a pair of upper and lower squeegee rollers, the lower squeegee roller being partially immersed in the conversion liquid. When the apparatus is not in use, the conversion liquid is drained into a closed storage tank.