Abstract: The present invention relates to a photoelectrographic element having a conductive layer in electrical contact with a acid photogenerating layer which is free of photopolymerizable materials and contains an acid photogenerator, a pigment which absorbs near-infrared radiation, and, preferably, an electrically insulating binder. Contiguous with the acid photogenerating layer is a charge transport layer formed from a polymeric binder and one or more charge transport materials. A process for forming images with this element is also disclosed.

Abstract: The present invention relates to laser-induced thermal dye transfer using heat-transferable dyes, bleachable and heat-transferable near-infrared absorbing sensitizers, acid-photogenerating compounds, and optional near-ultraviolet absorbing sensitizers. The combination of the near-infrared absorbing sensitizer and acid-photogenerating compounds effects transfer of the heat-transferable dyes and bleaching of the near-infrared absorbing sensitizer to eliminate unwanted visible light absorption. The acid-photogenerating compound may be present in either the dye-donor or dye-receiver element. If the acid-photogenerator is in the dye-donor, bleaching will occur upon initial exposure of the dye-donor to near-infrared or near-ultraviolet radiation. If present in the dye-receiver element, bleaching will occur upon subsequent exposure of the dye receiver to near-infrared or near-ultraviolet radiation.

Abstract: A photoelectrographic element comprising a conductive layer in electrical contact with an acid photogenerating layer which is (a) free of photopolymerizable materials and (b) comprises an electrically insulating binder and an acid photogenerator is disclosed in which the binder comprises a polymer having as a repeating unit thereof a moiety selected from the group consisting of: ##STR1## wherein R represents an alkylene group having 2, 4 or 6 carbon atoms and X represents an aromatic radical. A method of forming images with the element also is disclosed.

Abstract: The present invention relates to a photoelectrographic element having a conductive layer in electrical contact with an acid photogenerating layer which is free of photopolymerizable materials and contains an electrically insulating binder and a nonionic sulfonic acid photogenerator. A method of forming images with this element is also disclosed.

Abstract: The present invention relates to a photoelectrographic element having a conductive layer in electrical contact with an acid photogenerating layer which is free of photopolymerizable materials and contains an electrically insulating binder and acid photogenerator. A pigment which absorbs near-infrared radiation is included in the photoelectrographic element so that the element, when used in electrostatic copying, can be exposed with near-infrared radiation. A method for forming images with this element is also disclosed.

Abstract: A photoelectrographic element comprising a conductive layer in electrical contact with an acid photogenerating layer which is (a) free of photopolymerizable materials and (b) comprises an electrically insulating binder and an acid photogenerator is disclosed in which the binder comprises a polymer having as a repeating unit thereof a moiety selected from the group consisting of: ##STR1## wherein R represents an alkylene group having 2, 4 or 6 carbon atoms and X represents an aromatic radical. A method of forming images with the element also is disclosed.

Abstract: A process is provided for increasing the electrostatic transfer efficiency of toner powder from an element to a receiver sheet. The method involves conducting such transfer in the presence of at least one fluorinated onium salt wherein either one or both of the cationic portion and the anionic portion thereof contain a fluorinated hydrocarbon group. Further included are novel toner powders, a novel coated element, and certain new fluorinated onium salt compounds.

Abstract: New electrophotographic elements contain electron-transport agents comprising certain new chemical compounds, which are sulfonyl derivatives of dicyanomethylenefluorene.

Abstract: New chemical compounds are derivatives of fluorenones and are useful as electron-transport agents in electrophotographic elements.

Abstract: New quaternary ammonium salts are provided having advantageous utility as charge agents in electrostatographic toners and developers. The salts have the structure ##STR1## wherein R is alkyl having 12 to 18 carbon atoms.

Abstract: New electrostatographic toners and developers are provided containing new charge-control agents comprising quaternary ammonium salts having the structure ##STR1## wherein R is alkyl having 12 to 18 carbon atoms.

Abstract: New electrostatographic developers are provided, containing dual function polymeric binder/charge agents. The new developers contain toner particles comprising a vinyl addition binder polymer containing a quaternary phosphonium salt, wherein the phosphonium salt has a cationic portion comprising a phosphorus atom covalently bonded to the binder polymer.

Abstract: New electrostatographic developers are provided, containing dual function polymeric binder/charge agents. The new developers contain toner particles comprising a vinyl addition binder polymer containing a quaternary phosphonium salt, wherein the phosphonium salt has an anionic portion covalently bonded to the binder polymer.

Abstract: New quaternary ammonium salts are provided having advantageous utility as charge agents in electrostatographic toners and developers. The salts have the structure ##STR1## wherein R is alkyl having 12 to 18 carbon atoms.

Abstract: New electrostatographic toners and developers are provided containing new charge-control agents comprising quaternary ammonium salts having the structure ##STR1## wherein R is alkyl having 12 to 18 carbon atoms.

Abstract: New electrostatographic toners and developers are provided containing new charge-control agents comprising quaternary ammonium salts having the structure ##STR1## wherein R is alkyl having 12 to 18 carbon atoms.

Abstract: New electrostatographic toners and developers are provided containing new charge-control agents comprising quaternary ammonium salts having the structure ##STR1## wherein R is alkyl having 12 to 18 carbon atoms.

Abstract: New electrostatographic toners and developers are provided containing new charge-control agents comprising quaternary ammonium salts having the structure ##STR1## wherein R is alkyl having 12 to 18 carbon atoms.

Abstract: New quaternary ammonium salts are provided having advantageous utility as charge agents in electrostatographic toners and developers. The salts have the structure. ##STR1## wherein R is alkyl having 12 to 18 carbon atoms.

Abstract: New quaternary ammonium salts are provided having advantageous utility as charge agents in electrostatographic toners and developers. The salts have the structure ##STR1## wherein R is alkyl having 12 to 18 carbon atoms.