Abstract: This invention provides a photosensitive member with a surface protector layer. The surface protective layer comprises a resin layer and an amorphous carbon layer. The surface protective layer of the invention is effective for a soft photoconductive layer, for example, an inorganic photoconductive layer such as a selenium layer, a selenium-arsenic, selenium-tellurium layer, and an organic photoconductive layer. The surface protective layer does not deteriorate the photosensitive properties. The photosensitive layer of the invention is excellent in durability and resistance to peeling off.

Abstract: The present invention relates to a photosensitive member containing a specific azo compound for a charge generating agent, which is improved in photosensitive properties, in particular, sensitivity. The specific azo compound is represented by the formula (1): ##STR1## wherein A represents an aromatic hydrocarbon or a heterocyclic ring; R.sub.1 and R.sub.2 independently represent a hydrogen, a halogen atom, or an alkyl, aralkyl, aryl, condensed polycyclic ring or condensed heterocyclic ring; or R.sub.1 and R.sub.2 combinedly form a cyclic ring; n represents an integer from 1 to 4.

Abstract: The present invention provides a photosensitive member comprising a butadiene compound represented by the following general formula (I); ##STR1## wherein Z is a residual group forming a five or a six membered ring together with carbon atom, nitrogen atom and a benzene ring; R.sub.1 and R.sub.2 represent hydrogen atom, halogen atom, an alkyl group or an alkoxy group respectively, R.sub.1 and R.sub.2 may form a benzene ring in combination with each other; R.sub.3 is an alkyl group, an aralkyl group, or an aryl group, each of which may have a substituent; R.sub.4 and R.sub.5 represent an alkyl group, an aralkyl group, or an aryl group, each of which may have a substituent, R.sub.4 and R.sub.5 may form a ring in combination with each other, which is excellent in the stability of surface potential, the charge transporting ability, the sensitivity, the resistance to dark decay, the light fatigue resistance, the repetition properties thereof and so on.

Abstract: The present invention relates to a photosensitive member containing a specific azo compound represented by the following general formula (I); ##STR1## wherein A is a bivalent atom-group which forms a hydrocarbon ring or a heterocyclic ring with carbon atom of carbonyl group; A may have a substituent; R.sub.1 and R.sub.2 are independently selected from the group consisting of hydrogen, an alkyl group, an alkoxy group, a halogen atom and a cyano group; Cp is a residual group of a coupler with a phenolic OH group, which is improved in photosensitive properties, in particular, sensitivity.

Abstract: This invention relates to a photosensitive member wherein a photoconductive layer containing a N-cyanoimine compound represented by the following formula [I], [II] or [III] is formed on or over an electroconductive substrate; ##STR1## wherein R.sub.1 -R.sub.13 are respectively a hydrogen atom, an alkyl group, an alkoxy group, a halogen atom, a nitro group, a cyano group, a substituted sulfonyl group or a carboxylate group; n is an integer of 0-4; Z is a residual group which forms a ring with the benzene ring; Z may have a substituent; X is an oxygen atom or N-CN.

Abstract: A high output, multiple cylinder internal combustion engine embodying an improved exhaust system. Each cylinder of the engine discharges into a common expansion chamber through a respective exhaust pipe. Valves are provided for preventing the transmission of exhaust pressure pulses back to the combustion chamber exhaust ports.

Abstract: A high output internal combustion engine embodying an improved exhaust system including a reflective control valve that is positioned so as to prevent the existence of positive pressure at the exhaust port during certain running conditions so as to improve induction efficiency.

Abstract: The present invention relates to a photosensitive member containing a specific styryl compound for a charge transporting material, which is improved in photographic propertied such as photosensitivity and repeating properties.

Abstract: This invention provides photosensitive member with a transparent protective resin layer formed on a photoconductive layer formed over an electrically conductive substrate, wherein the transparent protective resin layer comprises magnesium fluoride of 1 .mu.m or less in maximum particle size and of 0.1 .mu.m or less in mean particle size dispersed in resin at the content of 5-60 % by weight to the resin, and the protective layer of the invention protects a photoconductive layer effectively without the deterioration of the sensitivity of the photoconductive layer.

Abstract: The present invention relates to a photosensitive member containing a specific styryl compound for a charge transporting material, which is improved in photographic propertied such as photosensitivity and repeating properties.

Abstract: The present invention provides a photosensitive medium for electrophotography comprising a styryl compound represented by the following formula (I) or (II): ##STR1## wherein Ar.sub.1 is a substituted aryl group and Ar.sub.2, Ar.sub.3, Ar.sub.4 are each an aryl group which may have a substituent; ##STR2## wherein both Ar.sub.5 and Ar.sub.7 substituted aryl groups and Ar.sub.6 and Ar.sub.8 are each an aryl group which may have a substituent, and n is 0 or 1.The use of the present compound inhibits the light fatigue of the photosensitive medium effectively and renders the medium repeatedly usable with a diminished surface potential reduction, reduced rise of residual potential; and lesser sensitivity variation, enabling the medium to exhibit stable electrophotographic characteristics and high sensitivity to afford sharp copy images.

Abstract: The present invention relates to a photosensitive member containing a specific azo compound for a charge generating agent, which is improved in photosensitive properties, in particular, sensitivity.

Abstract: The present invention relates a photosensitive member which has a charge generating layer comprising specific phthalocyanine as a charge generating material and specific resin as a binder, and/or a charge transporting layer comprising specific hydrazone compounds as a charge transporting material and dyes as an absorbent for undesired lights.

Abstract: An exhaust gas control means for motorcycles or the like wherein an expansion chamber that contains an exhaust control valve is positioned beneath and to the rear of the engine. The individual exhaust pipes extend from the exhaust ports of the engine into the expansion chamber in proximity to the valve for improving the performance throughout the engine speed and load ranges.

Abstract: Two embodiments of induction systems for internal combustion engines that improve mid range performance by providing a reflective device in the air inlet for the induction system that reflects negative pressure pulses back into the induction system so as to balance the pressure and reduce the deleterious effects of pulsations. In one embodiment, the reflective device is a fixed obturating member while in the other embodiment, the reflective device is an adjustably positioned valve member that is positioned in response to engine operating conditions such as engine speed.

Abstract: The present invention provides a photosensitive member having a charge transporting layer containing a new enamine compound which has a specific substituent on the terminal carbon of the enamine bone, which give an excellent charge transportability.

Abstract: The present invention relates to a photo sensitive member containing a specific azo compound for a charge generating agent, which is improved in photosensitive properties, in particular, sensitivity.

Abstract: The present invention relates to a photosensitive member, which comprises enamine compounds having a specific substituent on the nitrogen atom constituting the enamine bone, and has an excellent charge transportability.

Abstract: A laminated-type photosensitive member having an aluminum substrate, and a charge generating layer comprised of an organic pigment dispersed in resin, and a charge transporting layer, the aluminum substrate is anodized to form a alumite layer which has a certain thickness, a certain crystalline/amorphous aluminum oxide molar ratio, and a certain impedance; the anodized aluminum layer is sealed; and/or an undercoat layer is formed on the anodized layer. By such arrangement it is possible to obtain a laminated-type photosensitive member excellent in properties of photosensitive members, in particular, good anti-charge injection and retification characteristics.

Abstract: The present invention relates to a photosensitive member containing a specific hydrazone compound for a charge transporting agent, which is improved in sensitivity, chargeability, resistivity over repeated use and stability.