MATERIALS AND SUPPLIES FOR A DUPLICATING PROCESS WHEREIN COPY SHEETS ARE WETTED ON THE SURFACE WITH A FLUID PRIOR TO CONTACT WITH AN IMAGED MASTER FOR TRANSFER OF COMPONENTS FROM THE IMAGED MASTER TO THE COPY SHEETS TO PRODUCE COPY-NAMELY, CARBON SHEETS AND CARBON SHEETS HAVING A PROTECTIVE COATING, AND MASTER UNITS CONSISTING OF SUCH COATED AND UNCOATED CARBON SHEETS