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.

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 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.

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.

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.

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.

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.

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.

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.