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3930854 |
Electrostatic copy paper containing manganous salt
Print contrast in zinc oxide-coated electrostatic copy paper is improved by the incorporation of small quantities of manganous chloride or manganous bromide.
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3930852 |
Electrophotographic sensitive member with attaching means
An electrophotographic sensitive member comprises of a flexible web having a photosensitive layer and provided with a longitudinally uni-directionally heat contractible insulating connector sheet...
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3928036 |
Flexible xerographic photoreceptor element
A seamless flexible photoreceptor device which comprises a conductive substrate made up of an elastomeric material formed in the shape of a continuous belt with the elastomer containing a second...
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3915703 |
Photoconductive composition and element employing a sensitizer and a light filtering substance
A photoconductive material comprises a photoconductor, a sensitizer and a light filtering substance such as a dye or pigment which itself displays substantially no sensitizing action, but is...
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3909261 |
Xerographic imaging member having photoconductive material in interlocking continuous paths
A xerographic imaging member is disclosed which includes a photoconductive insulating layer, said layer comprising an electrically insulating organic resin matrix and a photoconductive material in...
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3904292 |
Apparatus for single sheet photographic reproduction
The invention described is a copier that is preferably small, light in weight, easy to use, self powered and portable. It may be used for reproducing a one or two-sided original that is flat or has...
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3901704 |
Bichargeable electrophotograhic light-sensitive materials
An electrophotographic light-sensitive material which comprises a support having thereon a light-sensitive layer comprising an insulating resin containing a photoconductive powder dispersed...
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3894793 |
Liquid crystal imaging system using tributyltin oxide or tributyltin chloride
Nematic liquid crystalline materials are homeotropically aligned by contact with either tributyltin oxide or tributyltin chloride. Electro-optical lifetime of nematic liquid crystalline materials...
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3894794 |
Liquid crystal imaging system using tribulyltin oxide
Electro-optical lifetimes of liquid crystalline compositions comprising a nematic liquid crystalline material and an optically active material are extended by contact with tributyltin oxide.
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3873354 |
Electrostatic printing
Papers for electrostatic reproduction processes which have a surface resistivity of not more than 0.9-3 × 10 11 IPC ohms/square at a relative humidity of 25 percent and a surface resistivity of...
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3861915 |
BLOCK COPOLYESTERS OF POLYSILOXANES AS ADDITIVES TO PHOTOCONDUCTIVE LAYERS
Solvent soluble block copolyesters consisting essentially of units having the formula: ##SPC1## Wherein R is an alkylene radical containing at least 3 carbon atoms; R 1 is an alkyl radical and R 2...
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3861912 |
PRESSURE SENSITIVE ELECTROPHOTOGRAPHIC REPRODUCTION SHEETS
An electrophotographic reproduction sheet or label having adhered to the surface of the backing sheet thereof opposite from the electrophotographic layer, a layer of electrically conductive...
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3861954 |
RECEIVER SHEETS FOR ELECTROSTATIC RECORDING
A receiver sheet for electrostatic recording comprises a dense paper base sheet having a bulk porosity of less than 200 Sheffield units as measured by a Sheffield Porosimeter with a 1 1/2 inch...
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3853553 |
METHOD FOR IMAGE TRANSFER USING PERSISTENT INTERNAL POLARIZATION
1. A photosensitive plate comprising a photoconductive layer having persistent internal polarization characteristics is interposed between an electrically insulating layer and an electrically...
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3849130 |
ORGANIC PHOTOCONDUCTIVE COMPOSITION AND ELECTROPHOTOGRAPHIC MEMBER
There are disclosed photoconductive insulating compositions and electrophotographic members utilizing such composition which are transfer complexes of a Lewis acid, preferably 2, 4,...
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3837906 |
METHOD OF MAKING A XEROGRAPHIC BINDER LAYER, AND LAYER SO PREPARED
A xerographic binder layer which comprises inorganic photoconductive particles contained in an insulating, fused, inorganic glass matrix, the photoconductive particles are present in an amount from...
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3826573 |
METHOD OF RECORDING AND REPRODUCING INFORMATION IN THE FORM OF ELECTRICAL CONDUCTIVITY DIFFERENCES
Information recording material sensitive to the action of activating radiation, at least part of the thickness of which. from the surface thereof, consists of a homogeneous dispersion of...
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3816118 |
ELECTROPHOTOGRAPHIC ELEMENT CONTAINING PHTHALOCYANINE
An electrophotographic plate comprising phthalocyanine pigment dispersed in a binder material is disclosed. Methods of preparing and using said plate in electrophotographic processes are also...
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3811879 |
PHOTOCONDUCTIVE CHARGE-TRANSFER COMPLEX WITH CRYSTALLIZATION PREVENTER
The invention relates to a photoconductive insulating coating composition, which includes a crystallization prevention agent. The photoresponse of a poly N-vinyl carbazole-trinitrofluorenone charge...
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3801315 |
GRAVURE IMAGING SYSTEM
A method of electrostatographic imaging utilizing a gravure member having a conductive backing with a uniform pattern of lands and valleys thereon, with the lands having a surface of a...
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3793021 |
ELECTRONIC RECORDING MATERIAL
An electronic recording material, comprising a support having a recording layer consisting of a highly insulating resin or a photoconductive layer composed of said highly insulating resin and a...
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3776630 |
ELECTROSTATIC PRINTING METHOD AND APPARATUS
Apparatus is disclosed for electrostatically printing, comprising a photosensitive plate composed of a conductive substrate having fine pores distributed uniformly all over the surface thereof and...
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3772011 |
PRINT-OUT ELEMENTS AND METHODS USING PHOTOCONDUCTORS AND POLYGNES
Print-out elements and methods are described which involve a crystalline polyacetylenic compound in, or in contact with a photoconductive layer. Visible images are obtained with these layers in...
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3762944 |
ELECTROTHERMOGRAPHIC DUPLICATING SHEET AND PROCESS
Electrothermographic reproduction sheet and process in which the latent image is both electrostatic and tacky to achieve more uniform and higher image densities, lower background densities and...
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3719486 |
PHOTOCONDUCTIVE ELEMENTS CONTAINING ORGANO-METALLIC PHOTOCONDUCTORS
Photoconductive compositions and elements containing a Group Va organo-metallic photoconductive compound.
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3671467 |
SELENIUM CONTAINING POLYMERS
This invention relates to organic diselenides and polyselenides among which are cyclic compounds represented by the formula: wherein R is selected from divalent hydrocarbylene radicals of five to...
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3661587 |
PHOTOGRAPHIC MEDIA
In photographic elements comprising a reversibly activated photoconductor and incorporating a photographic reducing agent, increased shelf life results from using an N-(carboxy-substituted alkyl)...
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3658523 |
PHOTOCONDUCTIVE RECORDING MEMBER UTILIZING A MIXTURE OF ZINC OXIDE AND CADMIUM SULPHIDE-CADMIUM SELENIDE
A photoconductive recording material is superadditively sensitized to visible light by a mixture of 95-50 percent of photoconductive zinc oxide and 5-50 percent of photoconductive crystalline mixed...
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3652438 |
PHOTOELECTROPHORETIC IMAGING PROCESS USING DIVALENT HEAVY METAL SALTS OF 1(1'-SULFO-2-NAPHTHYLAZO)-Z-NAPHTHOLS AS IMAGING MATERIAL
New compositions consisting of a group of metal salts of 1(1' -sulfo-20' -naphthalazo)-2-naphthols. Also, photoelectrophoretic imaging processes using these compositions are described.
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3647429 |
PHOTOCONDUCTIVE COMPOSITIONS AND ELECTROPHOTOGRAPHIC ELEMENTS CONTAINING GROUP IVA OR GROUP VA ORGANOMETALLIC PHOTOCONDUCTORS
Photoconductive compositions and electrophotographic elements containing as photoconductors organometallic compounds having at least one aminoaryl group attached to a Group IVa or Group Va metal...
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3634134 |
METHOD OF MAKING A PHOTOCONDUCTIVE COMPOSITION AND DEVICE
A method of making a photoconductive layer which includes forming a coating on the surface of a supporting substrate, said coating having at least a major portion of a vitreous selenium alloy in...
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3607259 |
PACKAGE OF CHARGED PHOTOCONDUCTIVE RECORDING ELEMENTS FOR ELECTROPHOTOGRAPHY
An electrophotographic recording element which is precharged and held in charged condition for subsequent reuse, utilizing a backing member of a resistivity sufficient to prevent leakage away of...
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3597082 |
UNCOPYABLE PHOTOCHROMIC PAPER
A photochromic paper having visible data thereon which, in response to radiation impinging on its surface, temporarily changes color to substantially match the color of the data thereby preventing...
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3542545 |
FROST OR RELIEF WRINKLING OF AN IMAGING ARTICLE COMPRISING AN ELECTRICALLY PHOTOSENSITIVE LAYER AND A DEFORMABLE LAYER
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3536485 |
XEROGRAPHIC PLATE SUPPORTED BY A MANDREL
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3515648 |
ANIONIC RESIN FOR ELECTROCONDUCTIVE PAPER
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3512969 |
PHOTOGRAPHIC PROCESS BASED ON THE QUENCHING OF COLOR CENTERS
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3513021 |
ELECTROMAGNETIC-SENSITIVE RECORDING MEDIUM
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3496063 |
ELECTROGRAPHIC REPRODUCTION ARTICLE AND METHOD
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3493427 |
RECORDING BODY FOR ELECTROSTATIC RECORDING
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3485633 |
ELECTROPHORETIC IMAGING PROCESS EMPLOYING METALLIC LAKES OF FLUORESCEIN DERIVATIVES AS THE ELECTRICALLY PHOTOSENSITIVE MATERIAL
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3481734 |
PHOTOELECTROSTATIC RECORDING MEMBER USEFUL FOR CONTACT PHOTOPRINTING
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3453106 |
COMPOSITIONS EXHIBITING PERSISTENT INTERNAL POLARIZATION WHERE A PHOTOCONDUCTIVE MATERIAL IS DISPERSED IN A POLYSILOXANE RESIN DERIVED FROM TRIFUNCTIONAL MONOMERS
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3441410 |
DEFORMATION IMAGING PROCESSES USING ELECTRICALLY PHOTOSENSITIVE PHOTOCHROMIC MATERIALS
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3441947 |
THERMOPLASTIC RECORDING PROCESS
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3438773 |
FLEXIBLE TRANSPARENT ELECTROPHOTOGRAPHIC FILM AND METHOD OF DEVELOPMENT OF SAID FILM
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3437408 |
MULTIPLE COPY ELECTROSTATIC IMAGING APPARATUS
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3415681 |
Thermoplastic film recording media
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3411903 |
Xerographic method and plate comprising photoconductive insulating fibers
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3408188 |
Electrophotographic plate and process comprising photoconductive charge transfer complexes
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