Humidity-resistant proofing toners with low molecular weight polystyrene

摘要: This invention concerns a method for color development of surface having imagewise tacky and nontacky image areas which comprises (a) applying dry nonelectroscopic toner to the image-bearing surface; (b) distributing particles over whereby distributed become embedded solely in areas; (c) physically removing form non-tacky are left substantially free particles, improvement wherein high resolution images higher toned optical density with improved purity obtained using humidity resistant size distribution within range from about 0.2 micron 10 microns, not more than % being below 0.5 above 5 consists essentially colorant dispersed an organic resin is single homogeneous polymer selected group consisting homopolymers styrene or homologs, interpolymers thereof, said number average molecular weight 500 2,000, softening temperature 75°C 175°C. In another embodiment, this dry, toners producing purity.