Abstract: An electrophotographic photosensitive member is constituted by disposing a photosensitive layer on a support. The photosensitive layer is characterized by containing a specific triphenylamine compound having at least two phenyl groups each substituted with two alkyl groups including one alkyl group located in meta-position in conjunction with nitrogen atom or each substituted with three alkyl groups. The photosensitive member is suitable for providing an electrophotographic apparatus showing excellent electrophotographic characteristics such as a high photosensitivity, a good potential stability in repetitive use, a decreased transfer memory, no crack in the photosensitive layer and no crystallization of a charge-transporting material.

Abstract: A picture display device which displays either of two pictures having different aspect ratios on the same screen thereof includes two screening units and a filter member which is disposed ahead of the screening units. Each screening unit has a rotatable reel and a screening sheet which is wound around the reel. The screening sheet is movable by the rotation of the reel so as to fully expose a screen of the picture display device and to screen a remaining or no-signal portion of the screen.

Abstract: An electrophotographic photosensitive member is constituted by disposing a photosensitive layer on an electroconductive support. The photosensitive layer is characterized by containing an arylamine compound having specific two fluorenyl groups. The photosensitive member is suitable for providing an electrophotographic apparatus showing excellent electrophotographic characteristics such as a high photosensitivity, a good potential stability in repetitive use, a decreased pause memory, and no crack in the photosensitive layer.

Abstract: An electrophotographic photosensitive member is constituted by disposing a photosensitive layer on an electroconductive support. The photosensitive layer is characterized by containing a specific polycarbonate having a side chain comprising a charge-transporting group formed by nitrogen atom and benzene ring. The charge-transporting group may preferably has a specific triphenylamine structure, hydrazone structure or biphenyldiamine structure. The photosensitive layer is suitable for providing an electrophotographic apparatus showing excellent electrophotographic characteristics such as a high photosensitivity, a good potential stability in repetitive use.

Abstract: An electrophotographic photosensitive member of the present invention has a photosensitive lazer containing a compound represented by the formula (1): ##STR1## The electrophotographic photosensitive member has a high sensitivity and can maintain stable and excellent electrophotographic characteristics even when repeatedly used.

Abstract: A method of recovering and reproducing a tinning liquid containing Fe ions and other detrimental cations by the steps of removing cations from the tinning liquid by passing the tinning liquid or a diluted liquid of the tinning liquid through a strong-acid cation exchange resin to obtain a recovered acid, thereafter reproducing the strong-acid cation exchange resin and desorbing adsorbed cations into a solution containing an acid by passing the acid through the exchange resin to which the cations have been adsorbed, precipitating and separating Sn ions in the form of a precipitate of an Sn compound from the solution into which the cations have been desorbed while maintaining Fe ions as ions in this solution, mixing and dissolving the precipitate of the Sn compound or a compound reduced from the same in the recovered acid to reproduce and reuse the mixture of the Sn compound and the recovered acid as a tinning liquid, and discharging the solution containing Fe ions out of the system of the tinning liquid.

Abstract: An electrophotographic photosensitive member is constituted by disposing a photosensitive layer on an electroconductive support. The photosensitive layer is characterized by containing a specific fluorene compound or by containing another specific fluorene compound and a specific triphenylamine compound. The photosensitive layer is suitable for providing an electrophotographic apparatus showing excellent electrophotographic characteristics such as a high photosensitivity, a good potential stability in repetitive use, a decreased transfer memory, no crack in the photosensitive layer and no crystallization of a charge-transporting material.

Abstract: A drug delivery system including a drug container containing a dose of a dry drug and having a mouth portion sealed by a sealing member including a packing, a spherical closing member and a holding member; a solvent container containing a solvent and having at either ends first and second openings also sealed by a sealing member at least one sealing member for the first opening of the solvent container including a packing, a spherical closing member and a holding member; and a fluid-communication member arranged between the mouth portion of the drug container and the first opening of the solvent container.

Abstract: A medical solution delivery system comprises a cylindrical container having an opening at one end and a port for a medical solution at the opposite end; a plunger slidably arranged in the container; a plunger-driving device for forcing the plunger to move towards the port of the container to deliver a medical solution therethrough; a capsule for holding the container, the plunger and the plunger-driving device; and a flow control device connected to the port of the container to control a flow rate of the solution delivered therefrom. The solution in the container is delivered through a flow control device connected to the port of the container.

Abstract: An electroluminescent device is constituted by disposing an organic compound layer between a pair of electrodes. An improved output is given by including in the organic compound layer a compound having a skeleton of the following formula (II) and having a carbonyl group: ##STR1## wherein R.sub.3, R.sub.4 and R.sub.5 independently denote an alkyl group, an aromatic ring group, a heterocyclic group, an alkoxy group, an aryloxy group, a halogen atom, nitro, cyano, hydroxyl, or amino, and m, n and p independently denote 0 or an integer of up to 5.

Abstract: A solvent container to be used in combination with a drug container or vial, which comprises a flexible container body containing a solvent therein and having a mouth covered with a self-sealing member, a guide capsule having an open end sealed by a sealing member and being removably mounted on the mouth of the container body; and a double-pointed hollow needle having a sharp piercing edge at each end and being slidably arranged in the guide capsule to constitute a means for communicating the container body with the drug vial in cooperation with the guide capsule.

Abstract: A drug vessel includes a vessel body with a narrow neck extending to an open end of a mouth portion thereof, and a stopper fitted in the open end. The stopper includes a stopper body of an elastomeric material with a through-hole passing through a central portion thereof along its center axis, and a closing body fitted into the through-hole of stopper body to block the through-hole.

Abstract: A drug vessel suitable for aseptic mixing of a drug with a solvent or diluent and for parenteral administration of the resultant solution, which includes a cylindrical vessel body reduced in diameter at both sides thereof to form a narrow mouth portion at each end, and a seal member to be attached to each mouth portion of the vessel body for sealing the same.

Abstract: A drug container is sealed by an annular packing arranged on an open end of a container body, a spherical closing member held on the annular packing, and a cap-like holder fitted on the mouth portion of the container body. In use, the drug container is screwed to a solvent container assembly having a partition wall with a pushing rod. The spherical closing member is pushed out from the packing by the pushing rod and then the partition wall is broken out by the holder of the drug container to communicate the container body with the solvent container.

Abstract: A fluid container comprises a drug container, a deformable solvent container, a double-pointed hollow needle having a sharp piercing edge at each end and being arranged between the drug container and the solvent container, a guide capsule with a cap rotatably mounted thereon, and a means for converting rotary motion of the cap to a linear motion of the drug container to push the drug container toward the solvent container in cooperation with the cap and the guide capsule so that a fluid communication is made between two containers through the needle.

Abstract: A photosensitive member for electrophotography, including an electroconductive substrate and a photosensitive layer disposed thereon, wherein the photosensitive layer comprises a triarylamine compound represented by the following general formula (I): wherein Ar.sub.4 and Ar.sub.5 respectively denote a benzene ring or aromatic fused-ring hydrocarbon group capable of having a substituent; R.sub.1 and R.sub.2 respectively denote a hydrogen atom, alkyl, alkoxyl or halogen atom; and at least one of Ar.sub.4 and Ar.sub.5 is an aromatic fused-ring hydrocarbon group.

Abstract: An electrophotographic photosensitive member comprises an electroconductive support and a photosensitive layer formed thereon. The photosensitive layer contains a compound represented by the general formula: ##STR1## The compound provide an electrophotographic photosensitive member which has excellent sensitivity and potential stability.

Abstract: An electrophotographic photosensitive member, comprising: an electroconductive support and a photosensitive layer disposed on the electroconductive support, wherein the photosensitive layer comprises (i) oxytitanium phthalocyanine having a crystal form characterized by main peaks specified by Bragg angles (2.theta..+-.0.2 degree) of 9.0 degrees, 14.2 degrees, 23.9 degrees and 27.1 degrees in X-ray diffraction pattern based on CuK.alpha. characteristic X-rays, and (ii) a fluorene compound represented by the following formula (I): ##STR1## wherein Ar.sup.1 and Ar.sup.2 independently denote aryl group optionally having a substituent; R.sup.1 and R.sup.2 independently denote alkyl group optionally having a substituent, aralkyl group optionally having a substituent or aryl group optionally having a substituent; and R.sup.3 denotes hydrogen atom, alkyl group optionally having a substituent, alkoxy group optionally having a substituent, hydroxyl group or halogen atom.

Abstract: An electrophotographic photosensitive member has an electroconductive support and a photosensitive layer. The photosensitive layer contains a compound represented by the general formula (1) below:Ar--(--N.dbd.N--Cp).sub.i (1).

Abstract: An organic electronic material comprises a compound represented by the following formula (I). ##STR1## The compounds transport electrons and is excellent in durability when used in a photosensitive layer of an electrophotographic photosensitive member.