Rinse composition for use in electro-photographic printing

Claim 1

IN THE ELECTROPHOTOGRAPHIC PREPARATION OF ETCHABLE PHOTOENGRAVING PLATES INCLUDING: (A) PROVING A PHOTOCONDUCTIVE COMPOSITION COMPRISING, A PHOTOCONDUCTIVE ZINC OXIDE SUSPENDED IN A CROSS-LINKING RESINOUS INSULATING BINDER COATED ON A METAL PLATE, (B) ELECTROSTATICALLY CHARGING SAID COATED PLATE, (C) EXPOSING THE CHARGED PLATE TO AN ILLUMINTATED IMAGE TO FORM A LATENT ELECTROSTATIC IMAGE, (D) CONTACTING SAID LATENT IMAGE WITH A CROSS-LINKING PROMOTING CATALYST MATERIAL, (E) RINSING THE PLATE SOCONTACTED IN A RINSING LIQUID, (F) CURING THE PLATE AT AN ELEVATED TEMPERATURE, (G) REMOVING THE NON-IMAGE AREAS, AND (H) CONTACTING THE SO-TREATED PLATE WITH A POWDERLESS ETCHING BATH; THE IMPROVEMENT COMPRISING, RINSING THE CATALYST-CONTACTED PLATE WITH A RINSE COMPOSITION COMPRISING: (1) FROM ABOUT 48.5 TO ABOUT 49.5 PARTS BY VOLUME OF A STABLE, LOW TOXICITY, NON-FLAMMABLE FLUORINATED HYDROCARBON LIQUID CHARACTERIZED BY A KAURI-BUTANOL VALUE OF ABOUT 31, AND EVAPORATION RATE OF 170 SECONDS (BASED ON CCL4 BEING 100), A BOILING POINT OF ABOUT 117.63*F. AND A MOLECULAR WEIGHT OF ABOUT 187.39; (2) FROM ABOUT 48.5 TO ABOUT 49.5 PARTS BY VOLUME OF A HIGH PURITY, LOW TOXICITY, ISOPARAFFINIC SOLVENT, HAVING A KAURIBUTANOL VALUE OF ABOUT 29, AN EVAPORATION RATE OF ABOUT 353 SECONDS, AND A FLASH POINT (TCC) OF ABOUT 50*F., AND (3) FROM ABOUT 1.0 TO ABOUT 3 PARTS BY VOLUME OF AN ALIPHATIC NAPHTHA SOLVENT CHARACTERIZED BY A KAURIBUTANOL VALUE OF ABOUT 30, AN EVAPORATION RATE OF ABOUT 3480 SECONDS, A FLASH POINT OF ABOUT 147*F. (TCC), AND A BOILING RANGE OF FROM 364* TO 402*F.