Abstract: The present invention relates to a method for regenerating tetraalkylammonium hydroxide used as developer solution for positive type resist from waste developer solution. Waste solution from developer solution for positive type resist, which contains tetraalkylammonium hydroxide as principal component, is neutralized, and after depositing and removing alkali-soluble organic substances dissolved in it, it is electrolyzed in an anode chamber of an electrolytic cell partitioned by cation exchange membranes, and it is anodized in the anode chamber. Aqueous solution of tetraalkylammonium hydroxide obtained from the cathode chamber is further introduced to an anode chamber of the other electrolytic cell to perform multi-stage electrolysis or it is introduced into an anode chamber of an electrolytic cell partitioned into 3 chambers or more by two or more cation exchange membranes to perform multi-chamber electrolysis.

Abstract: An organic electroluminescent device comprises a cathode, an emitting layer of organic compound including a quinoline derivative, a positive-hole transport layer of organic compound and an anode which are laminated in sequence, further comprising a metal film having a work function equal to or lower than that of the anode and partially disposed between the anode and the positive-hole transport layer. This device achieves a high luminance efficiency per se. The existence of the metal film reduces resistance values of whole anodes. The entering efficiency of the positive-hole carrier is partially decreased due to the metal film line. This metal film line decreases the waste electric current that does not contribute the emission of the emitting layer.

Abstract: A plasma torch for cutting use comprises a torch body, a water-cooled electrode arranged in the torch body, a nozzle arranged outside the electrode so as to cover the electrode through a plasma gas passage formed therebetween, a nozzle cap covering the nozzle, a nozzle protection cap having, on its front end side, an opening opposing to an orifice of the nozzle and being disposed outside the nozzle cap through an annular secondary gas passage communicating with the opening, the nozzle protection cap being arranged in the secondary gas passage in an electrically insulated state from the electrode and the nozzle, and an insulator disposed in the secondary gas passage and formed of an electrically insulating material, the insulator having a rectifying passage for rectifying a gas flow passing the secondary gas passage.

Abstract: Waste solution of developer, used as developer for a positive type photo resist and containing tetraalkylammonium hydroxide is neutralized with carbon dioxide, and it is filtered through a separation membrane. After removing precipitates of insoluble organic substances, it is sent to an anode chamber of an electrolytic cell divided by a cation exchange membrane, and electrolysis is performed. Low grade organic compounds in aqueous solution of tetraalkylammonium hydroxide obtained from a cathode chamber of a first stage electrolytic cell are oxidized and decomposed and are then supplied to an anode chamber of the next stage electrolytic cell, and high purity tetraalkylammonium hydroxide aqueous solution is obtained from the cathode chamber.

Abstract: An apparatus for processing a vibratory surface in which a processed object is hung on a hook, the hook is supported by the supporting frame having an air spring, the object is immersed in a surface treating liquid. The height of the air spring is automatically adjusted to the most suitable standard height in response to a weight of the processed object and then the surface treatment is carried out while the hook is being vibrated. An apparatus for performing this vibratory surface treatment method is provided.

Abstract: A method for processing a vibratory surface in which a processed object is hung on a hook, the hook is supported by the supporting frame having an air spring, the object is immersed in a surface treating liquid. The height of the air spring is automatically adjusted to the most suitable standard height in response to a weight of the processed object and then the surface treatment is carried out while the hook is being vibrated. An apparatus for performing this vibratory surface treatment method is provided.

Abstract: A CRT controller can be included in a device for driving a dot array recorder. Image processed data output by the CRT controller is stored in a buffer memory. This data stored in the buffer memory is shifted by one raster in response to a vertical sync signal from the CRT controller. The period of the vertical sync signal is set through a command input device to correspond to the paper feed speed and the printing line density. A data display timing signal is output by the CRT controller to a data holding circuit. The raster of data shifted out of the buffer memory is held by the holding circuit and printed on a recording surface by a recording head.

Abstract: In a method for electrolyzing hydrochloric acid in an electrolysis apparatus, the improvement which comprises the electrolysis apparatus comprising at least two electrolysis cells, each electrolysis cell having at least one anode, at least one cathode and at least one cation exchange membrane therebetween to define an anode compartment and a cathode compartment therein, and the method comprising the steps of(a) feeding hydrochloric acid aqueous solution as a starting material into the anode compartment of a first electrolysis cell and electrolyzing the hydrochloric acid aqueous solution therein,(b) feeding hydrochloric acid aqueous solution discharged from the anode compartment of the first electrolysis cell into the anode compartment of a second electrolysis cell and electrolyzing the hydrochloric acid aqueous solution therein,(c) feeding hydrochloric acid aqueous solution discharged from the anode compartment of the last electrolysis cell of the electrolysis apparatus into the cathode compartment of each of