Abstract: A photoelectric conversion device is composed of a first electrode and a second electrode, at least one of the electrodes being transparent; and a first organic material layer and a second organic material layer, which are overlaid between the first electrode and the second electrode in such a junction relationship that the first organic material layer and the second organic material layer constitute a rectifying junction, the first electrode and the first organic material layer constitute an ohmic junction, and when the first electrode comes into contact with the second organic material layer, the first electrode and the second organic material layer constitutes a rectifying junction, and the second electrode and the second organic material layer constitute an ohmic junction, and when the second electrode comes into contact with the first organic material layer, the second electrode and the first organic material layer constitute a rectifying junction.

Abstract: The present invention discloses a photovoltaic device comprising a portion containing three layers disposed between two electrodes, at least one of which is light transmittable; wherein said three layers consist of a first layer of organic electron acceptor material, a second layer of organic electron donor material and a third layer of organic electron donor material different from the material of the second layer; or a first layer of organic electron donor material, a second layer of organic electron acceptor material and a third layer of organic electron acceptor material different from the acceptor material of the second layer, the sequence of the three layers being counted from a light incident side; and the device having a high photoelectric conversion efficiency.

Abstract: An electric device comprises a portion comprising an electrode, an n-type inorganic semiconductor layer formed on the electrode, and an electron-conductive organic layer formed on the n-type inorganic semiconductor layer, and a photoelectric conversion device utilizes the above electric device by using the electron-conductive organic layer as an electron acceptor, with addition of an electron donor layer and another electrode thereto.

Abstract: The present invention relates to a paper releasing guide-claw for a copying machine and a method for producing the same including molding a material containing from about 50-90% by weight of a polyimide consisting essentially of recurring units of the formula: ##STR1## from about 5 to about 40% by weight of a fibrous reinforcing material, and from about 5 to about 30% by weight of a solid lubricant, wherein the sum of the content of the fibrous reinforcing material and the solid lubricant is from about 10 to about 50% by weight, heat treating the molded guide-claw at a temperature of from about 250.degree. C. to about 340.degree. C. for a time sufficient to increase the density of the polyimide component by 1.5%.

Abstract: Corrosion-resistant rare earth magnets and a method for their manufacture, said magnets containing at least one rare earth element in an amount of 5 to 40 weight %, Fe in an amount of 50 to 90 weight %, Co in an amount of 0 to 15 wt %, B in an amount of 0.2 to 8 weight %, and at least one additive selected from Ni, Nb, Al, Ti, Zr, Cr, V, Mn, Mo, Si, Sn, Ga, Cu, and Zn in an amount of 0 to 8 weight %. The method comprises the steps of: (i) pretreating the surfaces of the magnet after sintering it; (ii) activating the surfaces thereof; and (iii) coating the surfaces thereof with at least one layer of Ni-containing film by electroplating. The activating may be carried out by treating the surfaces with a soap or a surface active agent. The activated surfaces may be subjected to ultrasonic vibrations in water to remove foreign substances before electroplating.

Abstract: An electric device comprises a portion comprising an electrode, an n-type inorganic semiconductor layer formed on the electrode, and an electron-conductive organic layer formed on the n-type inorganic semiconductor layer, and a photoelectric conversion device utilizes the above electric device by using the electron-conductive organic layer as an electron acceptor, with addition of an electron donor layer and another electrode thereto.

Abstract: A photoelectric conversion element has a front electrode, a rear electrode and a photo-activatable layer sandwiched between these electrodes. The photo-activatable layer contains a compound selected from a group consisting of a triphenylamine compound, a diaminocarbazole compound, an oxazole compound, a thiazole compound, and 1,3-dithiol compound. The compound contained in the photo-activatable layer improves photoelectric conversion efficiency.

Abstract: An image forming apparatus employs a non-magnetic developing agent and a magnetic developing agent which have been charged to opposite polarities to develop at least first and second latent images formed on an image carrier in response to image information, thus forming first and second developed images. The first and second developed images are charged to the same polarity as that of the magetic developing agent, prior to the transfer onto a transfer medium so as to provide a vivid transferred image.

Abstract: An image forming apparatus usable with a process cartridge detachably mountable thereto. The process cartridge includes a main cartridge containing a photosensitive member and process means as a unit. A subordinate process cartridge is detachably mountable to the main cartridge. The subordinate cartridge includes at least a developing device which is different from the developing device contained in the main cartridge so that a multi-color image can be formed if desired. The photosensitive member is used both for the main process cartridge and the subordinate cartridge.

Abstract: An image forming apparatus includes a first developing device for forming a first toner image and a second developing device for forming a second toner image including a developer carrying member spaced apart from the image bearing member by a distance and a device for applying a developing bias voltage to form an electric field having a maximum voltage Vmax and a minimum voltage Vmin, such that when the first developer is positively charged,.vertline.Vmin-V.sub.T .vertline./d.ltoreq.2.25, or when the first developer is negatively charged,.vertline.Vmax-V.sub.T .vertline./d.ltoreq.2.25,where V.sub.T (V) is a potential of a first toner image immediately before formation of the second toner image after the first latent image is subjected to the charger, the potential of the first toner image being a surface potential of the first toner image under existence of the first latent image.

Abstract: An N,N'-diphenylbenzidine polymer and a method of producing the N,N'-diphenylbenzidine polymer by electrochemical polymerization of N,N'-diphenylbenzidine having the formula are disclosed: ##STR1##

Abstract: A magnet roll, comprising a main body portion of a soft material and having a surface portion which is permanently magnetized, and a supporting portion integrally formed with the main body portion by the same soft material as of the main body portion for mounting the main body portion to a member to which the main body is to be mounted.

Abstract: An electrophotographic apparatus includes a movable electrophotographic photosensitive member, a charger for uniformly charging the photosensitive member, a first device for forming a first electrostatic latent image by exposing the photosensitive member charged by the charger to negative image light corresponding to first image information, a first developing device for developing through a reversal development the first electrostatic latent image into a first visualized image, a second device for exposing the photosensitive member having the first visualized image to positive image light corresponding to second image information to form a second electrostatic latent image, a second developing device for developing through a regular development the second electrostatic latent image into a second visualized image, wherein a potential level in an area of the photosensitive member exposed to the light by the second device is between a potential level in an area of the photosensitive member exposed to the light

Abstract: An image forming apparatus includes a movable image bearing member; a device for forming a first latent image and a second latent image; a first developing device for developing the first latent image using a first developer containing magnetic particles and toner particles to form a first developed image; a second developing device, disposed downstream of the first developing means with respect to movement direction of the image bearing member, for developing the second latent image on the image bearing member bearing the first developed image and the second latent image, using a second developer which is different from the first developer, the second developing device including a developer containing portion and developer carrying sleeve for carrying from the developer containing portion the second developer to a developing zone where the developer carrying sleeve is opposed to the image bearing member; and a magnetic field generating pole, in the second developing device, for providing an attracting surfac

Abstract: Improved all-aromatic polyester resin compositions are proposed which comprise an all-aromatic polyester resin and a polyether oil. They have excellent moldability and shock resistance while retaining good heat resistance.

Abstract: The present invention relates to a photoelectric transducer element comprising a light-transmissive front electrode, a photo-active layer and a back electrode, characterized in that said photo-active layer contains an azo compound expressed by the general formula (I), ##STR1## wherein A represents a coupler residue.