Photoelectrographic imaging with near-infrared sensitizing pigments
AssigneeEastman Kodak Company
InventorsDouglas E. Bugner, William Mey, G. Gary Fulmer
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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.
Claims16
A photoelectrographic element for electrostatic imaging comprising a conductive layer in electrical contact with an acid photogenerating layer which is free of photopolymerizable materials and comprises an electrically insulating binder and an acid photogenerator, wherein the improvement comprises:
- a phthalocyanine pigment, thereby making said photoelectrographic element capable of being imaged with near-infrared radiation.
A photoelectrographic element for electrostatic imaging comprising a conductive layer in electrical contact with an acid photogenerating layer which is free of photopolymerizable materials and comprises:
- an acid photogenerator which is an aromatic onium salt selected from the group consisting of aryl halonium salts, aryl phosphonium salts, aryl arsenonium salts, aryl sulfonium salts, triaryl selenonium salts, aryl diazonium salts, and mixtures thereof;
- an electrically insulating binder selected from the group consisting of polycarbonates, polyesters, polyolefins, phenolic resins, paraffins, and mineral waxes;
- a phthalocyanine pigment, thereby making said photoelectrographic element capable of being imaged with near-infrared radiation;
- a copper (II) salt;
- and
- a compound containing secondary hydroxyl groups.
Dependencies are inferred from the claim text.