Abstract: An ink composition for use in jet printing comprising an aqueous solution of a water-soluble dye and a humectant consisting of ethylene oxide adducts of at least one acetylenic diol in the absence of any glycol or glycol ether.

Abstract: Electrophotographic toner compositions, particularly concentrates, are emulsified in water; then subject to pigment and associated charged body material extraction by a mineral spirit liquid which is rich in charge control agent; after which separation the emulsified composition and the extracted pigment material are individually recovered for re-use or other desired disposition.

Abstract: A compact electrophotographic camera for use in conjunction with an electrophotographic print having an electrically charged electrophotoconductive surface with the charged surface being covered with a sheet of dielectric material. As the print is advanced in the camera, the dielectric protective cover is stripped away by reverse passage over a roll. The electrophotographic print is then located on a support in the field of vision of the lens and is exposed. The sheet is then advanced to a toner applicator and is subsequently advanced out of the camera.