Abstract: Lamination and trimming of discrete sections of a supported photosensitive layer employs reversal of the direction of travel of a photosensitive layer while such layer is not laminated to the same or a different substrate.

Abstract: Improved resolution of magnetic toner image on a substrate is obtained by removing excess toner from a recording member containing parallel lines of flux by passing an air flow substantially parallel to the premagnetization line pattern to remove excess toner prior to toner transfer to the substrate.

Abstract: Method of preparing 2,2'-dithiodianiline by the steps of (A) obtaining an agitated mixture of a water solution of a salt of o-aminothiophenol and an unstable dispersion therein of a liquid hydrocarbon, (B) oxidizing said salt by the slow addition of a water soluble peroxide, (C) discontinuing the agitation to allow the formation of a sharply defined lower aqueous phase and upper hydrocarbon phase, (D) drawing off said lower aqueous phase and (E) distilling the hydrocarbon phase therefrom and recovering said 2,2'-dithiodianiline as a distilland.