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4309497 |
Polyester interlayers for electrically activatable recording (ear) elements
In an electrically activatable recording element, such as one comprising an electrically conductive support having thereon, in sequence: (a) a polymeric electrically active conductive (EAC) layer,...
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4307165 |
Plural imaging component microcellular arrays, processes for their fabrication, and electrographic compositions
A planar array of microcells is formed in a support. An electrostatic charge pattern is established on the support differentiating first and second interlaid sets of microcells. An electrographic...
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4292386 |
Photoconductive drum with paper layer attachment
An electronic copying apparatus includes a photosensitive drum having a drum body and a photosensitive layer of (ZnO) formed on the outer periphery of the drum body. Said drum body has a hollow...
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4281055 |
Photosensitive element with water soluble interlayer
Photosensitive element for electrophotography which comprises (a) a photosensitive layer composed of (1) a binder resin and (2) particles of photoconductive material being dispersed in said...
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4279945 |
Process of preparing magnetic recording elements containing transparent recording layer
A process of preparing magnetic recording elements containing substantially transparent magnetic recording layer which exhibit excellent magnetic and reproducing characteristics is as follows: ...
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4265988 |
Self-sticking adhesive tape
A self-sticking adhesive tape is provided which is particularly effective for joining free ends of a photoconductive belt at a side of the belt presenting a photoconductive layer of ZnO dispersed...
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4264696 |
Electrophotographic photoreceptor
An electrophotographic photoreceptor has a photoconductive layer on a substrate. The photoconductive layer comprises a photoconductor and a water-soluble compound which reacts with free anion...
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4258114 |
Electrophotographic recording material and method of manufacturing same
An electrophotographic recording material having a porous layer of photoconductor-binder, particularly with crystalline tetragonal lead monoxide as the photoconductor, is provided between an...
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4232101 |
Photosensitive paper for electrophotography with an electrically conductive coating of a fluorine resin
A photosensitive paper for electrophotography comprising a paper substrate, an electrophotographic photosensitive layer formed on one surface of the substrate and an electrically conductive coating...
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4230785 |
Pressure sensitive adhesive elecrophotographic reproduction sheets
A pressure sensitive adhesive rendered electrically conductive without adversely affecting pressure sensitive adhesiveness by adding thereto electrically conductive material. Where a conductive...
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4224395 |
Electrophotographic recording material with cellulose acyl ester binder
This invention relates to an improvement in an electrophotographic recording material comprising an electrically conductive support, optionally an insulating intermediate layer, and a...
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4221855 |
Electrophotographic plate produced by firing glass binder containing inorganic photoconductor and high melting point inorganic additive in non-reducing atmosphere
A sintered high sensitive electrophotographic plate free of cracks in a photoconductive layer and exfoliation of it from a substrate can be obtained by adding an inorganic material, whose melting...
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4210710 |
Photoconductor of varying light sensitivity from center to edges
A member for electrostatographic reproduction formed of a substrate and having a photoconductive layer characterized by a sensitivity to light which is greater at the outer portions than at the...
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4204865 |
Direct-imaging flexible offset printing plate and method of manufacture
A flexible offset printing plate is formed from a directly imaged electrophotographic member comprising an inorganic coating of a photoconductive material on a polyester substrate. The...
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4203769 |
Radiation-sensitive elements having an antistatic layer containing amorphous vanadium pentoxide
An antistatic layer of a radiation-sensitive element, such as a photographic film or paper, is formed by coating and drying of an antistatic composition comprising an aqueous solution of an...
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4172933 |
Polymers having pendant acceptor groups
Disclosed are monomers of the formula: ##STR1## wherein R is ##STR2## R' is hydrogen or methyl; R" is alkyl of 1-10 carbon atoms; X and Y are independently selected from the group consisting of...
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4156757 |
Electrically conductive perylene derivatives
Electrically conductive organic perylene derivatives and their use. They have the formulae ##STR1## where R is hydrogen, alkyl or oxaalkyl of 1 to 10 carbon atoms, cycloalkyl, alkaryl or aryl which...
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4149887 |
Photography utilizing micro-capsular materials
A micro-capsular material for use as a photographic reproducing medium includes a plurality of micro-capsules distributed over a given surface. Each of the capsules is formed with a mantle of light...
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4148639 |
Water-insensitive electroconductive polymers
Copolymers of a cationic electroconductive monomer and a crosslinkable monomer. These polymers are electroconductive and become water-insensitive after being applied to a substrate.
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4133933 |
Electrosensitive recording sheet with support containing cuprous iodide particles
An electrosensitive recording sheet consists of an electroconductive material of cuprous iodide, an electrosensitive color forming material, a binder and a support. A color forms in the recording...
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4126528 |
Electrophoretic composition and display device
Electrophoretic display device containing a suspension of hollow particles in an insulating medium, wherein the weight density of the particles is equal to, or within five percent of, that of the...
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4125701 |
Organic photoconductive materials
Organic photoconductive materials comprising as an active ingredient a photoconductive copolymer consisting of 3 to 50 mole % of at least one acrylic monomer represented by the formula ##STR1##...
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4123283 |
Setting electrical latent images in migration imaging elements
A migration layer comprising migration material and softenable material, said migration layer having a set electrical latent image. The process of setting the electrical latent image comprises...
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4120720 |
Combined means for accurately positioning electrostatographic recording members during imaging and means for establishing electrical connection with the intermediate conductive layer thereof
In an electrostatographic recording member comprising at least: (1) an electrically-insulating substrate; (2) an electrically-conductive intermediate layer overlying a first surface of said...
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4117072 |
Process for enhancement of mechanical properties of photoconductive polymers
Process for enhancement in the mechanical properties of polymeric films prepared from photoconductive polymers, such as poly(N-vinylcarbazole), its homologues and/or its analogues. In this process,...
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4116894 |
Compositions and method for enhancing electrical life of copolymers
Butadiene copolymers having controlled electrical life and controlled resistivity are described. A method is disclosed for enhancing the electrical life of butadiene copolymers having solubilized...
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4111692 |
Electrostatic printing plate
An electrostatic printing plate is obtained by forming a permanent electroconductive pattern on its exposed portion, which is effected by irradiation of light to expose a light image on a...
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4110112 |
Photosensitive material containing 2,3-di(2,3-diiodopropoxy)-propyl cellulose and uses thereof
A photosensitive material is provided in which at least one surface portion of a substrate contains 2,3-di-(2,3-diiodopropoxy)-propyl cellulose uniformly distributed therethrough. A photosensitive...
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4106933 |
Piezoelectric method and medium for producing electrostatic charge patterns
A radiation sensitive piezoelectric copy method and medium for producing positive or negative latent electrostatic charge patterns. In a first embodiment the copy medium includes a poled, radiation...
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4105445 |
Resilient arcuate surface containing photoconductor
A novel liquid developing system is disclosed which employs a rigid member adapted so that it is resilient when employed in operating contact with another rigid member. The resilient member is...
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4101321 |
Imaging system
An imaging system wherein an imaged migration-type imaging member is provided and either the background of image areas of said image are selectively reduced to a more transparent condition. The...
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4097417 |
Photocurable electroconductive coating composition
A photocurable electroconductive coating composition adapted to be crosslinked and insolubilized by actinic radiation comprises an acrylic monomer, a photoactivatable free radical polymerization...
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4085455 |
Electrical information storage system
An electrical information or latent image storage system using a storage element which comprises a layer of substantially electrically insulating material having a layer of electrically...
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4076564 |
Roughened imaging surface for cleaning
Cleaning imaging material from a xerographic imaging surface with a cleaning blade with reduced friction between the blade and the surface is provided without image degredation by an appropriately...
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4075013 |
Electrophotochemical preparation of selenium photoconductive members
A method for forming an electrophotographic imaging member comprising electrochemically depositing amorphous selenium on a conductive substrate while simultaneously illuminating the substrate with...
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4038545 |
Electrostatic recording process and ionizing radiation image recording method employing the same
Disclosed is an electrostatic recording method for forming an electrostatic latent image on a dielectric electrostatic recording layer provided on a conductive support. The relationship between the...
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4033768 |
Method for the preparation of an electrostatographic photosensitive device
Disclosed is a method for the preparation of a seamless belt useful as the photosensitive element in an electrostatographic copying device. The method comprises: A. applying a film or soluble...
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4023898 |
Electrostatic developing apparatus
This apparatus is disclosed for developing electrostatic latent images, comprising a developer supply unit having a first liquid repellent layer with a thickness in the range of 3 -...
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4014697 |
Electrostatographic imaging member
A process for image reproduction comprises the steps of contacting a charge blocking surface on a photoreceptive body with a developer material containing charged toner particles, providing an...
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4014728 |
Method of making an imaging member
A method of forming an imaging member consisting essentially of (a) preparing a photoconductive layer comprising a block copolymer which exhibits a lamellar morphology, said copolymer having...
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4007045 |
Electrophotographic color process and electrophotographic light-sensitive material for use in the electrophotographic color process
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...
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4000944 |
Photoreceptor for electrostatic reproduction machines with built-in electrode
An electrostatic type copying or reproduction machine incorporating, as an integral, part of the machine photoconductive member, a signal generating electrode for use in controlling one or more of...
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3989860 |
Repair technique for photoreceptors
Disclosed is a method for repairing an electrostatographic photoreceptor comprised of a conductive substrate with a uniform layer of selenium on its surface. Scratches in the selenium layer of a...
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3979495 |
Method of making a photoreceptor
A photoconductive layer comprising a block copolymer which exhibits a lamellar morphology, said copolymer having lamellae of at least 2 phases, one phase comprising a photoconductive material and...
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3972718 |
Electrostatographic gravure member
Disclosed is a photosensitive device for use in electrostatographic copying. The device comprises: A. an endless, arcuate substrate; and B. a thin, conductive filament having a layer on its surface...
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3966468 |
Organic photoconductors with triamino benzene additives
In organic, photoconductive insulating compositions including one or more organic photoconductors, the image contrast characteristics obtained when using such compositions can be modified or...
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3950167 |
Imaging system
A system for "capturing" charge within the structure of an electrophotographic imaging member in the imagewise exposed areas and thereby creating an electrostatic latent image in the imagewise...
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3941472 |
Photosensitive drum for electrophotographic copying machines
An electrically insulated minor portion is provided on the periphery of a photosensitive drum comprising a cylindrical supporter, a photoconductive strip wound in roll form on a supply reel...
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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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