摘要:
Disclosed is an electrophotographic imaging member that includes a substrate, a unitary electrophotographic insulating layer and a continuous phase having a transparent film forming polymer, the polymer phase having a surface facing away from the substrate, the surface facing away from the substrate contains imbibed dye molecules. The electrophotographic imaging member is prepared by subliming or vaporizing at least one sublimable or vaporizable dye on and into the surface of the layer facing away from the substrate. The invention also includes methods of forming multicolored or other images with this electrophotographic imaging member.
摘要:
A photoreceptor for use in a two color electrostatic imaging process is disclosed which comprises a conductive substrate layer; a first photogenerating layer overlaying the substrate layer which is sensitive to a first wavelength; a unipolar hole transporting layer overlaying the first photogenerating layer; and a second photogenerating layer overlaying the hole transporting layer which is sensitive to a second wavelength and at least partially transmits the first wavelength; wherein the transporting layer is substantially transparent to the first wavelength.An apparatus for forming multi-color images of an object employing the photoreceptor of the invention, wherein the color images are properly registered with respect to each other, is also disclosed.
摘要:
Herein disclosed are method of and apparatus for forming a multicolor image by repeating such whole-surface exposure and development of a multicolor image forming photosensitive member (4), which has: a photoconductive layer (1) sandwiched vertically between an insulating layer (2) and a conductive layer (3), at least one of said insulating layer (2) and said conductive layer (3) being light transmissive and being composed of a plurality of kinds of filters, as will produce a potential pattern in a portion of a specific kind one of said filters, after said photosensitive member (4) has been charged and subjected to an image exposure, thus adjusting the light quantity and wavelength distribution of said whole-surface exposure, the developing conditions or the developing electric field.
摘要:
An electrophotographic process of forming a dye image comprising the steps of:(1) charging a photosensitive element formed on an electroconductive support by electrical charging, said photosensitive element consisting essentially of photoconductive particles and sublimable dyes, (2) exposing the charged photosensitive element to a light image, (3) developing the photosensitive element with acidic toners, (4) heating the photosensitive element to sublime the sublimable dyes, and (5) transferring the dye images to a dye-image accepting substrate with the aid of solvents.An electrophotographic material comprising an electroconductive support and a photosensitive element (i.e., photoconductive layer) formed thereon, said photosensitive element consisting essentially of photoconductive powders and sublimable dyes.
摘要:
The present invention relates to an electrophotographic color process comprising the steps of: (a) charging an electrophotographic light-sensitive material by corona discharge, said material having at least two kinds of color-producing photoconductive particles disposed at random on an electroconductive support, said color-producing photoconductive particles consisting essentially of a photoconductive particle, a sensitizer and a leuco dye, (b) exposing said charged material to light, (c) developing said material by toner containing acid substance, and producing color in the leuco dye by the interaction of the leuco dye with the acid substance, and forming a color image by carrying out once the procedure of charging, exposing and developing.An electrophotographic light-sensitive material comprising an electroconductive support and a photoconductive layer consisting of at least two kinds of color-producing photoconductive particles disposed at random on the support, said color-producing photoconductive particles consisting essentially of a photoconductive particle, a sensitizer and a leuco dye.
摘要:
Conversion of selected image portions of a black and white xerographic copy into color portions is accomplished by applying a donor sheet, having a colorant in a resin binder coated thereon, to the image portions and thereafter heating the donor. Upon stripping the donor from the xerographic copy, the toner in the image portions of the xerographic copy acquire a surface layer of the colored composition from the donor sheet thereby resulting in a color highlighting of the image. The use of a nonthermoplastic binder resin material having a melting point of above 250.degree. F is necessary to insure the nontransfer of the color composition to background areas of the xerographic copy.
摘要:
A novel electrophotographic imaging system employing persistent conductivity materials is disclosed. Laser radiation is utilized with subsequent charging and developing to provide sharp clear reproductions of an original. A two color process employing one developer is also disclosed.
摘要:
Method for obtaining a colored copied image by repeating a cycle consisting of the process of forming an electrostatic latent image on an electrophotographic copying material having a photoconductive layer, the process of transferring said electrostatic latent image onto a transfer sheet having a dielectric layer and the process of developing the thus transferred electrostatic latent image for each primary color of the colored original image, an improved method of forming a colored copied image free of fog which method comprises employing a transfer sheet having a dielectric layer containing a photoconductive substance and interposing an additional process of applying active radiant rays to the whole surface of said dielectric layer upon which the image is developed between said cycles, and a transfer sheet useful in the method.
摘要:
A light-transparent photoconductive material for use in electrophotography is the reaction product obtained by condensing A. AN ORGANIC PHOTOCONDUCTIVE COMPOUND CONTAINING AN AMINO AND/OR HYDROXYL GROUP AND B. A REACTIVE COLORED COMPOUND CONTAINING AN ACTIVE HALOGEN ATOM; OR BY CONDENSING A. AN ORGANIC PHOTOCONDUCTIVE COMPOUND CONTAINING AN ACTIVE HALOGEN ATOM AND B. A REACTIVE COLORED COMPOUND CONTAINING AN AMINO AND/OR HYDROXYL GROUP.
摘要:
THE PHOTOSENSITIVE MEMBER CONSISTS BASICALLY OF A SUPPORTING BASE, A PHOTOCONDUCTIVE LAYER AND INSULATING LAYER DYED IN A DESIRED COLOR FOR PROVIDING A COLOR FILTER EFFECT. SUCH PHOTOSENSITIVE MEMBERS HAVING DIFFERENT COLOR FILTET EFFECTS ARE PROVIDED FOR POLYCHROMATIC REPRODUCTION ON A SINGLE TRANSFERABLE MATERIAL.