Abstract: In a writing head for forming an electrostatic latent image on a cylindrical image carrier, a plurality of writing electrodes are arranged on a first face of a film substrate in a first direction parallel with an axial direction of the image carrier. The writing electrodes are adapted to be abutted against an outer periphery of the image carrier to provide electric charges thereto. A first wiring member are arranged on the first face of the film substrate to supply signals from a first electrode driver to a first electrode group in the writing electrodes. A second writing member are arranged on a second face of the film substrate to supply signals from a second electrode driver to the second electrode group in the writing electrodes.

Abstract: A head device is for writing an electrostatic latent image on an image carrier of an image forming apparatus which is movable in a first direction. In the head device, a plurality of writing electrodes are arrayed on a substrate in a second direction perpendicular to the first direction to form a plurality of electrode arrays which are arranged in the first direction. The writing electrodes are brought into contact with the image carrier with a flexibility of the substrate. A head driver is disposed on the substrate. A plurality of wirings are extending in the first direction to connect the head driver and the respective writing electrodes to supply writing voltages from the head driver to the writing electrodes. At least one of the wirings extended through one of the writing electrodes in one of the electrode arrays is placed between adjacent ones of the writing electrodes in another one of the electrode arrays.

Abstract: The present invention discloses a thermosetting resin composition which comprises (A) 35 to 75 parts by weight of a thermosetting resin comprising a compound having a hydrobenzoxazine ring as a main component, (B) 10 to 25 parts by weight of a polycondensation product of a phenol, a compound having a triazine ring and an aldehyde, and (C) 10 to 45 parts by weight of an epoxy resin, based on 100 parts by weight of the total amount of organic solid components of Components (A), (B) and (C), and (i) a bisphenol F epoxy resin having a weight-average molecular weight of 1,000 to 3,000, or (ii) a mixed epoxy resin of bisphenol F epoxy resin and bisphenol A epoxy resin having a weight average molecular weight of 1,000 to 3,000, is contained in Component (C) in an amount of 0 to 100% by weight of Component (C); and a prepreg, a laminated board for a wiring board and a wiring board using the same.

Abstract: An image forming apparatus includes a belt member, a secondary transfer member which is abutted against the belt member to secondary transfer a toner image to a recording medium and a contact/separation mechanism which brings the secondary transfer member into contact with a first widthwise end portion in the belt member first.

Abstract: A head device is for writing an electrostatic latent image on an image carrier of an image forming apparatus which is movable in a first direction. In the head device, a plurality of writing electrodes are arrayed on a substrate in a second direction perpendicular to the first direction to form a plurality of electrode arrays which are arranged in the first direction. The writing electrodes are brought into contact with the image carrier with a flexibility of the substrate. A head driver is disposed on the substrate. A plurality of wirings are extending in the first direction to connect the head driver and the respective writing electrodes to supply writing voltages from the head driver to the writing electrodes. At least one of the wirings extended through one of the writing electrodes in one of the electrode arrays is placed between adjacent ones of the writing electrodes in another one of the electrode arrays.

Abstract: A liquid development device has a developer retaining roller having recesses, which are for retaining liquid developer, provided in the surface of the developer retaining roller; and a supplying roller for supplying the liquid developer to the developer retaining roller. The upper edge of the supplying roller is located above the lower edge of the developer retaining roller in the vertical direction, and the supplying roller supplies the liquid developer to the developer retaining roller downwards from above.

Abstract: In a writing head for forming an electrostatic latent image on a cylindrical image carrier, a plurality of writing electrodes are arranged on a first face of a film substrate in a first direction parallel with an axial direction of the image carrier. The writing electrodes are adapted to be abutted against an outer periphery of the image carrier to provide electric charges thereto. A first wiring member are arranged on the first face of the film substrate to supply signals from a first electrode driver to a first electrode group in the writing electrodes. A second writing member are arranged on a second face of the film substrate to supply signals from a second electrode driver to the second electrode group in the writing electrodes.

Abstract: A belt member is seamed to form an endless belt which is stretched by a plurality of roller members and circulated in a first direction. The belt member is provided with an electrode portion at a first end portion thereof in a second direction perpendicular to the first direction. A cleaning member is abutted against the belt member. A seam of the belt member extends obliquely relative to the first direction such that an end of the seam confronting the electrode portion is situated in an upstream side of the first direction.

Abstract: A fixing apparatus, includes a fixing roller which has a middle portion and both end portions in an axis direction thereof, a pressing roller which is brought into press contact with the fixing roller for rotating so that a press contact portion is formed, an exfoliating member which exfoliates a sheet-like record medium from a surface of the fixing roller after the record medium is passed through the press contact portion, and restricting members which is provided at both end portions of the exfoliating member, and is brought into contact with the surface of the fixing roller so that an interval between the surface of the fixing roller and the exfoliating member is restricted. The middle portion of the fixing roller is smaller than the both end portions of the fixing roller in a diameter.

Abstract: In a fixing device incorporated in an image forming apparatus and operable to fix a toner image on a recording medium, a first rotative member and a second rotative member form a nip portion therebetween, at which the toner image is fixed on the recording medium. A separator separates the recording medium, which has been passed through the nip portion, from one of the first rotative member and the second rotative member. The separator is provided with a first guide face extending in a first direction to guide the separated recording medium to an inlet of a subsequent stage of the image forming apparatus. The first guide face is provided with a rib extending in the first direction.

Abstract: In an image forming apparatus of the present invention, the voltage of a chargeable layer 2b of an image carrier 2 at the portion to be in contact with writing electrodes 3b is adjusted by a surface potential adjusting member 8 which is disposed to be in contact with the chargeable layer 2b between the writing electrodes 3b and a transfer roller 6a. That is, even if the reverse charge injection occurs because the transfer voltage is applied to the transfer roller 6a and the transfer roller 6a is in contact with the chargeable layer 2b of the image carrier 2 at an interval between a printed paper 5 and the next paper 5, the potential of the chargeable layer 2b at the portion to be in contact with the writing electrodes 3b is adjusted not to exceed the withstand voltage of IC drivers 7 of the writing electrodes 3b by the surface potential adjusting member 8.

Abstract: The present invention discloses a thermosetting resin composition which comprises (A) 35 to 75 parts by weight of a thermosetting resin comprising a compound having a dihydrobenzoxazine ring as a main component, (B) 10 to 25 parts by weight of a polycondensation product of a phenol, a compound having a triazine ring and an aldehyde, and (C) 10 to 45 parts by weight of an epoxy resin, based on 100 parts by weight of the total amount of organic solid components of Components (A), (B) and (C), and (i) a bisphenol F epoxy resin having a weight average molecular weight of 1,000 to 3,000, or (ii) a mixed epoxy resin of bisphenol F epoxy resin and bisphenol A epoxy resin having a weight average molecular weight of 1,000 to 3,000, is contained in Component (C) in an amount of 0 to 100% by weight of Component (C); and a prepreg, a laminated board for a wiring board and a wiring board using the same.

Abstract: The present invention relates to a resin composition containing an epoxy resin, an amine-type curing agent, an organophosphorus compound having a structure represented by formula 1 and an organic solvent, wherein the epoxy resin and the organophosphorus compound has been compounded at a temperature of 50° C. or lower. The resin composition has enough flame retardancy without containing any halogen-containing flame retarder, has good heat resistance and good chemical resistance, and causes no problems with respect to reaction stability or curability caused by consumption of an epoxy resin through a reaction occurring during compounding of the resin composition.

Abstract: The object of the invention is to provide an image carrier which is capable of securely preventing the leakage of charge in lateral direction so as to stably conduct the application or removal of charge and which can be easily manufactured. An image carrier comprises a dielectric layer, wherein charge is transferred between the dielectric layer and a charge-transfer controlling means so as to apply charge to or remove charge from the dielectric layer, wherein the dielectric layer is formed in such a structure that a large number of conductive portions are formed to be separately dispersed in its outer surface. Charge is transferred between the conductive portions and the charge-transfer controlling means so as to apply charge to or remove charge from the conductive portions.

Abstract: In order to obtain image with high resolution and eliminate the nonuniformity of written latent images and toner images by achieving the formation of electrostatic latent images corresponding to the widths of driven writing electrodes, a writing head 3 has a plurality of writing electrodes 3b which are arranged along the axial direction of an image carrier 2 such that the writing electrodes 3b are in contact with the image carrier, wherein the writing electrodes 3b are aligned in the axial direction Y and the circumferential direction X of the image carrier 2 such that the writing electrodes 3b which are most adjacent to each other in the axial direction Y are not overlapped with each other as seen in the circumferential direction of the image carrier. (FIG.

Abstract: In an image forming apparatus, a resistant layer of each writing electrode is formed substantially in a semi-circular convex shape projecting upwardly. The top of the resistant layer is a spherical surface so that the resistant layer is in point contact with the charged layer of the latent image carrier. Because of point contacts, foreign matters adhering to the surface of the latent image carrier are easily allowed to pass, thereby preventing the occurrence of filming on the surface of the latent image carrier.

Abstract: A stainless steel separator, which is good of corrosion-resistance and low of contact-resistance, is proposed for a fuel cell. Its surface faced to a fuel electrode is pickled, which the other surface faced to an oxidizing electrode is roughened by electrolytic etching or the like. The roughening treatment may be performed before or after pickling and passivation. The roughened surface of the stainless steel separator without pickling or passivation may be faced to the oxidizing electrode.

Abstract: Writing electrodes of a writing device are kept in contact with a latent image carrier with a small pressing force by a weak restoring force of a substrate. An electrostatic latent image is written on the latent image carrier by applying or removing charge relative to the latent image carrier which is already uniformly charged by a charge control device. The application or removal of charge is conducted via charge-transfer between the latent image carrier and the writing electrodes which are in contact with each other. The electrostatic latent image is developed by a developing device to form a developing powder image and this developing powder image is transferred to a receiving medium such as a paper by a transferring device. Since the writing electrodes are employed as the writing device, the apparatus can be manufactured smaller and simply and can steadily write an image.

Abstract: The object of the invention is to provide an image carrier which is capable of securely preventing the leakage of charge in lateral direction so as to stably conduct the application or removal of charge and which can be easily manufactured. An image carrier comprises a dielectric layer, wherein charge is transferred between the dielectric layer and a charge-transfer controlling means so as to apply charge to or remove charge from the dielectric layer, wherein the dielectric layer is formed in such a structure that a large number of conductive portions are formed to be separately dispersed in its outer surface. Charge is transferred between the conductive portions and the charge-transfer controlling means so as to apply charge to or remove charge from the conductive portions.

Abstract: A stainless steel sheet useful as a separator for a low-temperature fuel cell has the surface state that a lot of fine projections (p) stand close together around many fine pits (d) formed over a whole surface. The surface state is realized by alternating electrolytic etching in a ferric chloride solution. When the stainless steel separator is built in a fuel cell, contact resistance between the separator and a graphite electrode is kept at a lower level even in a corrosive atmosphere. Consequently, the fuel cell can be driven with high power-generating efficiency over a long term even under severely corrosive conditions without generation of massive Joule heat.