160 results about "Organic photoconductor" patented technology

An improved overcoat layer for an organic photoconductor drum of an electrophotographic image forming device is provided. The overcoat layer is prepared from a curable composition including a triphenylamine charge transport containing two ethyl acrylate functional groups and a urethane resin containing six radical polymerizable functional groups. The amount of the triphenylamine charge transport containing two ethyl acrylate functional groups in the curable composition is about 20 to about 80 percent by weight. The amount of the urethane resin containing six radical polymerizable functional groups in the curable composition is about 20 to about 80 percent by weight. This overcoat layer improves wear resistance of the organic photoconductor drum without negatively altering the electrophotographic properties, thus protecting the organic photoconductor drum from damage and ultimately providing a photoconductor with a longer useful life when compared to other organic photoconductors commercially available.

A substituted oligofluorene for organic light-emitting diode (OLED) and organic photoconductor (OPC) has a chemical structure of: wherein X and Y are an integer of 0 or 1, G1 and G2 are independently of either CnH2n+1 or CnH2n+1O; and n is an integer of 0 to 16.

The object of the invention is to provide a novel aromatic polyester resin useful as a binder resin or charge transporting polymer for an organic photoconductor and an electrophotographic photoconductor having high sensitivity and high durability produced using the above-noted novel aromatic polyester resin. For this object, the invention provides an aromatic polyester resin which has a recurring unit represented by the following Formula (I) and an electrophotographic photoconductor produced using the above-noted aromatic polyester resin. wherein R1 represents any one of a hydrogen atom, an unsubstituted or substituted alkyl group and an unsubstituted or substituted aryl group; Ar1 represents an unsubstituted or substituted aryl group; Ar2 and Ar3 may be the same as or different from each other and represent respectively an unsubstituted or substituted arylene group; and W represents an unsubstituted or substituted divalent aromatic group.

An image forming apparatus is disclosed that is able to improve transfer efficiency and image quality. The image forming apparatus includes an organic photo-conductor with latent images formed thereon, and a developing unit for developing the latent images. The organic photo-conductor has surface friction coefficient less than or equal to 0.3. The developing unit develops the latent images while transporting a two-composition developing agent including a toner T and a carrier C by a traveling wave electric field.

An embodiment may be an organic photoreceptor, which comprises a conductive support; a photosensitive layer provided on the conductive support; and a surface layer containing a binder and a fluorine-containing resin fine particle having a number average primary particle diameter between about 0.02 μm and about 0.20 μm and a crystallinity of less than 90% and a binder resin; wherein a contact angle of the surface layer for water is 90° or more and a dispersion of the contact angle is within ±2.0°.

An image forming method comprising: the steps of developing an electronic latent image formed on an organic photoreceptor with a developer containing a toner; transferring a toner image formed by the developing on the photoreceptor onto a transfer material; and then removing toner which remains on the organic photoconductor employing a toner cleaner device comprising a cleaning blade, a supporting member of the cleaning blade, and a damping material. The cleaning blade and the supporting member are partially joined in parallel to each other, and the damping material is adhered onto either the cleaning blade or the supporting member.

The invention discloses a modeling based on a piecewise-linear system of a hybrid system theory and a control method, and belongs to the field of automatic control. All segmented models of the piecewise linear system can be integrated in an uniform frame so as to accurately describe the interaction of a model switch event and a continuous dynamic process, thereby being beneficial to eliminating vibration caused by the model switch; and a linetype performance index is adopted to replace traditional quadratic performance index to forecast controller design, and an OPC (organic photoconductor) client end program independently developed by Matlab is utilized to realize the integration of mixed prediction control algorithm and a DCS (data communication system) control system.

The invention relates to fullerene derivative acceptor materials, in particular to indene-containing fullerene derivative acceptor materials with good solubility property, and a preparation method and application of the indene-containing fullerene derivative acceptor materials. The indene-containing fullerene derivative acceptor materials have a structure shown in the description, and have good solubility property; in addition, because fullerene has higher electron mobility, the indene-containing fullerene derivative acceptor materials have higher electron mobility. The indene-containing fullerene derivative acceptor materials can be applied to the fields such as organic field-effect transistors, polymer solar cells, organic photoconductors and the like.

An overcoat layer for an organic photoconductor drum of an electrophotographic image forming device is provided. The overcoat layer is prepared from a curable composition including a hexyl-based urethane resin having six radical polymerizable functional groups and a charge transport molecule having at least one radical polymerizable functional group. The amount of the hexyl-based urethane resin having six radical polymerizable functional groups in the curable composition is about 20 percent to about 80 percent by weight. The amount of the charge transport molecules having at least one radical polymerizable functional group in the curable composition is about 20 percent to about 80 percent by weight. This overcoat layer improves wear resistance of the organic photoconductor drum without negatively altering the electrophotographic properties, thus protecting the organic photoconductor drum from damage and extending its service life.

An organic photoconductor containing a conductive support having thereon a photoconductor layer, wherein the creep ratio of the surface of the photoconductor layer is not less than 1% and less than 3.5%, and the surface roughness Ra is not less than 0.02 μm and less than 0.1 μm.

The invention is a self-cross-linked polyvinyl butyral (PVB) binder for organic photoconductors (OPC's) used in electrophotography. The no cross-linked form of the binder is available from Monsanto Co. in the U.S.A. a Butvar TM , and from Sekisui Chemical Co. in Japan as Slek TM . I discovered that the PVB may be self-cross-linked by subjecting it to a thermal cure at between about 150 DEG -300 DEG C. for about 2 hours. I think other ways of cross-linking, for example, e-beam, UV or X-ray radiation, will achieve results similar to those I obtained with heat. No cross-linker, nor cross-linkable copolymer nor catalyst is required to accomplish the cross-linking. After self-cross-linking, the PV has good mechanical durability and good anti-solvent characteristics. In addition, he self-cross-linked PVB's glass transition temperature (Tg) increases from about 65 DEG C. to about 170 DEG C. Also, when conventional photoconductor pigments are dispersed in the self-cross-linked PVB, they are well dispersed, and the resulting OPC's have good charge acceptance, low dark decay, and, in general, good photodischarge characteristics. Also, OPC's with the self-cross-linked PVB exhibited improved adhesion, so multi-layered OPC's made according to this invention will hav improved inter-layer bonding and longer economic lives.

Provided is an apparatus and method for supplying a charge voltage to an organic photoconductor (OPC) drum. The apparatus includes a storage unit for storing first service life information of the OPC drum according to a first supplying method, and second service life information of the OPC drum according to a second supplying method, a sensor unit for measuring information about conditions surrounding the apparatus, a control unit for selecting one of the first and second supplying methods according to the measured information and determining a charge voltage corresponding to the service life information according to the selected method, and a voltage supplying unit using the selected method to supply the determined charge voltage to the OPC drum.

This invention is a wide-frequency vibration and high light sensitive azo or phthalocyanine compound single layer organic photoelectricity conductor and its process method, which belongs to organic photoelectricity conductor technique field. The material mainly adopts charge carrier generation material and charge carrier transmission material and resin and conductive base material with certain proportion to form organic photoelectricity coating liquid and adopts the dipping and coating method. And the charge carrier generation material is the compound material of oxazolyl bisazo or metal phthalocyanine and the charge carrier transmission material adopts compounds of triaryl amine and hydrazone compound, and pyrazoline compound.

An improved overcoat layer for an organic photoconductor drum of an electrophotographic image forming device is provided. The overcoat layer is prepared from a curable composition including a charge transport molecule containing four radical polymerizable functional groups of the general structure exemplified below:where R1 and R2 contain a spacer group and a radical polymerizable functional group, R3 and R4 are selected from the group consisting of a radical polymerizable functional group, a non-radical polymerizable functional group, and one each of a radical polymerizable functional group and a non-radial polymerizable functional group, and R5 and R6 contain a spacer group and a radical polymerizable functional group. The curable composition also contains at least one curing agent. The curing agent comprises a urethane resin containing six radical polymerizable functional groups. This overcoat layer improves wear resistance of the organic photoconductor drum without negatively altering the electrophotographic properties, thus protecting the organic photoconductor drum from damage and extending its service life.

Composites comprising polymeric binders and phthalocyanine pigments to form a single layer positive organic photoconductor are provided for use in electrophotography. The polymeric binders comprise an aliphatic polymer or copolymer having a saturated ring for each repeat unit either included in the polymer chain or pendant therefrom and about 4 to 35% of functional groups such as -OH, -SH, -N<, >NH, and -NH2 per repeat unit. The saturated ring portion, being essentially non-polar, or at least less polar than an unsaturated ring, maintains the specific morphology of the phthalo-cyanine pigments commonly employed in positive charge organic photoconductors (OPCs) and results in a stable dispersion required for the stable performance of the OPC. Keeping the functional groups listed above to less than about 35% ensures that the photoresponse is not reduced to an unacceptable level. Heating of the composite is used to control the concentration of the functional groups. One or more separate thermal carrier generation control agents comprising compounds containing the functional group(s) may be used to provide part or all of the functional groups in the composite. The resulting composite evidences thermal stability of electronic properties, such as dark decay, at elevated temperatures in the range of about 35 DEG to 75 DEG C.

An overcoat layer for an organic photoconductor drum of an electrophotographic image forming device is provided. The overcoat layer is prepared from a curable composition including a urethane resin having at least six radical polymerizable functional groups. The at least six radical polymerizable functional groups may include acrylate group, methacrylate group, styrenic group, allylic group, vinylic group, glycidyl ether group, epoxy group, or combinations thereof. This overcoat layer has an improved wear resistance, thus protecting the organic photoconductor drum from damage and extending its useful life.

The invention discloses a data collection system (DCS) and an information processing method of a computer production simulation model. According to the information processing method of the computer production simulation model, communication modes of different protocols such as an industrial Ethernet communication technology, a process filed bus (PROFIBUS) communication technology, a multi point injection communication mode and an organic photoconductor (OPC) communication technology, wherein the industrial Ethernet communication technology is responsible for an engineer station and an operating personnel station of the DCS system and data exchange between a data server and a controller of the DCS system, the MPI communication technology is responsible for data exchange between each subsidiary controller of the DOS system and a corresponding OPC server, and the OPC communication technology is responsible for data exchange between the OPC servers and the corresponding computer production simulation models. By means of the information processing method of the computer production simulation model, the DCS system is directly or indirectly connected with the computer production simulation model through different communication protocols, and therefore the purposes that process data in the computer production simulation model is accurately and quickly acquired and instruction of the controller is transmitted to the computer production simulation model can be achieved.

A cooling unit for use with an image forming apparatus including an image development part, with an Organic photoconductor, which is installed inside the housing and which forms an image, a laser scanning unit which scans the surface of the Organic photoconductor, and a fuser assembly which fixes the image transmitted from the image development part at a high temperature and a high pressure. The cooling unit cools the laser scanning unit and image development part, and includes a fan, which generates airflow at the time of operation, a support frame to support the laser scanning unit, and a guide member, disposed on the support frame, which guides the airflow towards the laser scanning unit and the image development part.

This invention is a conductive elastic roller (1) comprising a shaft member (2) and one or more elastic layers (3) disposed on an outside of the shaft member (2) in a radial direction, wherein at least one of the elastic layers (3) is composed of an ultraviolet-curing type resin formed by curing a raw material for the elastic layer comprising a urethane acrylate oligomer (A), a photo-polymerization initiator (B) and a conductive agent (C) through ultraviolet irradiation, and the urethane acrylate oligomer (A) is a urethane acrylate oligomer synthesized by using as a polyol a polyether polyol (a1) having a proportion of primary hydroxyl groups in hydroxyl groups located at molecular ends of not less than 40% obtained by an addition polymerization of propylene oxide to a polyhydric alcohol alone, or the polyether polyol (a1) and another polyol (a2), and provides a conductive elastic roller (1) provided with an elastic layer having a low hardness, a small compression residual strain and an improved stain resistance to an adjoining member such as Organic Photoconductors or the like.

A method to make an improved organic photoconductor drum of an electrophotographic image forming device is provided. The improved organic photoconductor drum is prepared using a curable composition including a charge transport molecule containing four radical polymerizable functional groups of the general structure exemplified below:where R1 and R2 contain a spacer group and a radical polymerizable functional group, R3 and R4 are selected from the group consisting of a radical polymerizable functional group, a non-radical polymerizable functional group, and one each of a radical polymerizable functional group and a non-radial polymerizable functional group, and R5 and R6 contain a spacer group and a radical polymerizable functional group.

An overcoat layer for an organic photoconductor drum of an electrophotographic image forming device is provided. The overcoat layer is prepared from an (UV) ultraviolet curable composition including a urethane resin having at least six radical polymerizable functional groups and a charge transport molecule having at least one radical polymerizable functional group. The amount of the urethane resin having at least six radical polymerizable functional groups in the curable composition is about 35 percent to about 65 percent by weight. The amount of the charge transport molecules having at least one radical polymerizable functional group in the curable composition is about 35 percent to about 65 percent by weight. This overcoat layer improves wear resistance of the organic photoconductor drum without negatively altering the electrophotographic properties, thus protecting the organic photoconductor drum from damage and extending its useful life.

A multi-layered electrophotographic positively charged organic photoconductor includes a conductive substrate, a charge transport layer formed on the conductive substrate, and a charge generating layer formed on the charge transport layer. A composition to form the charge transport layer includes at least one hole transport material, a binder resin and an organic solvent, and a composition to form the charge generating layer includes a charge generating material, a binder resin, an organic solvent and a hole transport material. An organic photoconductor has improved static electrical properties by controlling interfacial conditions of the charge transport layer and the charge generating layer. The charge generating layer may be readily coated on the charge transport layer. In addition, the organic photoconductor has excellent electric properties such as an improved sensitivity and a low discharge voltage.

An image forming apparatus has an organic photoconductor having a surface layer containing fluorine-containing resin particles whose number average primary particle size is not less than 0.02 μm and is less than 0.20 μm; a charging device to charge by bring an charging member in contact with the organic photoconductor; a latent image forming device to for a latent image on the organic photoconductor; a developing device to visualize the latent image with toner and to form a toner image on the organic photoconductor; and a transferring device to transfer the toner onto a transfer material.

A method for preparing organic photoconductor drum with positive charge characteristic includes dissolving Merlon in organic solvent to prepare film forming agent solution, mixing said agent solution and metal phthalocyanine as well as biphenyl quinine together as mass ratio of 1: 40: 4000-1:100 :8000, scattering mixed material to be coat liquid, coating said coat liquid on aluminium drum base being oxidized by anode, drying coated alminium drum to form organic photoconductor drum with positive charging characteristic.

The invention discloses an energy management system and an energy management method. The energy management system comprises an on-site supervision system, a client and a data base server. The on-site supervision system comprises an organic photoconductor (OPC) server, a programmable logic controller, a sensor and a data transmission unit, where the sensor and the programmable logic controller is connected with each other, the programmable logic controller is connected with the OPC server, the OPC server is connected with the data transmission unit, the data transmission unit is connected with a real-time data receiving server, and the real-time data receiving server is connected with the data base server. The client comprises a Web client and a Web server, wherein the Web client is connected with the Web server, and the Web server is connected with the data base server. The energy management system and the energy management method can achieve functions of remote supervision based on a Web method, automatic collection, check, accounting and analyzing of data, automatic alarm and the like and effectively solve the problems that remote information interaction of an energy management is difficult and configuration information needs to be set repeatedly and complicatedly.

A process including: providing a cylindrical substrate rotating about the long axis; applying at least one coating layer with a direct writing applicator on the outer surface of the rotating substrate; and curing the resulting coated layer or layers. The use of a direct writing applicator provides precision in the dispensing of organic photoconductor coating layers with respect to line width and line thickness.

The invention discloses a fullerene derivative containing double-benzene nucleus and a preparation method and an application thereof. The fullerene derivative containing double-benzene nucleus has structure shown as follows, has good solubility, high lowest unoccupied molecular orbital (LUMO) energy level, and high electron mobility. The fullerene derivative containing double-benzene nucleus can be applied to fields of organic solar batteries, organic field-effect transistors and organic photoconductor and the like.

Devices and methods for remanufacturing a printer cartridge component are provided. The printer cartridge component is a drum gear assembly configured for attachment to an organic photoconductor (OPC) drum configured for use in a printer cartridge. The drum gear assembly has a drum drive gear and a drive axle attached to the drum drive gear. The drive axle has a first end with teeth portions. The device has a first portion having a drive axle engagement end configured to engage the drive axle. The device further has a second portion coupled to the first portion. The second portion has a teeth engagement portion to engage one or more of the teeth portions of the drive axle. The first portion and the second portion are configured for assembling and disassembling the drum gear assembly.

This invention provides an organic photoconductor which does not experience end-seal wear in normal use. This invention provides charge transport formulation that is easily prepared and coated by standard, dip-coating methods. This is realized by addition of a small amount of poly(methyl methacrylate-co-ethylene glycol dimethacrylate). Commercially available, 8μ spherical particles are used. These microspheres are insoluble in common organic solvents, but are readily dispersed into polycarbonate-based charge transport formulations. A photoconductor roller is mounted in pressure engagement with two end seals, each on opposite side of the roller.