Abstract: To provide an inexpensive wastewater treatment method which facilitates downsizing of tanks and requires less withdrawal of an excessive sludge, the use is made of an aeration tank 1 in which wastewater is contacted with a particulate carrier under an aerobic condition, and a total oxidization tank 3 in which the volume of a sludge generated in the aeration tank 1 is reduced under an aerobic condition, a coefficient of self-oxidization of the sludge flowing into the total oxidization tank 3 is set to 0.05 (per day), and the method includes a step of adding a coagulant to the total oxidization tank 3 for the purpose of improving the solid-liquid separating characteristic of the sludge within the total oxidization tank.

Abstract: To provide an inexpensive wastewater treatment method which facilitates downsizing of tanks and requires less withdrawal of an excessive sludge, the use is made of an aeration tank 1 in which wastewater is contacted with a particulate carrier under an aerobic condition, and a total oxidization tank 3 in which the volume of a sludge generated in the aeration tank 1 is reduced under an aerobic condition, a coefficient of self-oxidization of the sludge flowing into the total oxidization tank 3 is set to 0.05 (per day), and the method includes a step of adding a coagulant to the total oxidization tank 3 for the purpose of improving the solid-liquid separating characteristic of the sludge within the total oxidization tank.

Abstract: A plate-shaped vapor deposition mask for use with an OLED substrate, the mask is provided with through holes corresponding to a plurality of organic light-emitting elements formed on the substrate, used in vapor deposition fabrication of these organic light-emitting elements stacked on the substrate comprising the mask having engagement sections provided over a wide range on the surface facing the substrate corresponding to the distribution of the through holes, the substrate formed with corresponding structures to prevent positional slip of the vapor deposition mask in an in-plane direction by engaging the engagement sections of the mask.

Abstract: A method of treatment of waste water includes a sludge flocculating step of obtaining a supernatant liquid by flocculating within a flocculation tank 4 the sludge having been treated within an activated sludge aeration tank 3 where the waste water and an activated sludge are brought into contact with each other in an aerobic condition, a sludge concentration retaining step of retaining a concentration of a sludge within the activated sludge aeration tank 3 at a predetermined value by returning portion of a sludge within the flocculation tank 4 to the activated sludge aeration tank 3, an excessive sludge complete oxidation step of maintaining an excessive sludge, which is the sludge supplied from the flocculation tank 4, but exclusive of that portion of the sludge returned from the flocculation tank 4, in a complete oxidation state in which a speed of propagation of the sludge and a speed of self-oxidation of the sludge within the complete oxidation tank 5 are held in equilibrium with each other; and an excess

Abstract: A fuser apparatus having a pair of rollers in nip relation to transport a receiver member therebetween to permanently fix a marking particle image to such receiver member, and a skive mechanism for stripping a receiver member adhering to a fuser apparatus roller from the said roller. The skive mechanism includes a frame located in spaced relation with one of the rollers of the pair of fuser apparatus rollers. A plurality of skive assemblies, mounted on the frame, each include a skive finger and a support body for supporting such skive finger in operative relation to such one of the rollers. The skive fingers are elongated, thin, flexible members to substantially prevent damage to such associated fuser apparatus roller. Further, an air plenum is provided in operative relation to the other of the pair of rollers of the fuser apparatus rollers.

Abstract: Provided are an apparatus and a method for waste water treatment not generating excessive sludge, for which down-sized tanks are usable. The apparatus comprises an aeration tank where waste water to be treated is kept in contact with carrier particles in an aerobic condition, and a complete oxidation tank. In this, the liquid in the complete oxidation tank is filtered through a separation membrane and the resulting filtrate is discharged out of the system. The s-BOD sludge load to the complete oxidation tank is preferably at most 0.1 kg-BOD/kg-MLSS·day.

Abstract: A fuser apparatus having a pair of rollers in nip relation to transport a receiver member therebetween to permanently fix a marking particle image to such receiver member, and a dual function air skive assembly for stripping a receiver member adhering to a fuser apparatus roller from the said roller. The dual function air skive assembly includes a frame engageable with a roller of the pair of rollers of the fuser apparatus. An air plenum is supported by the frame in operative relation to the fuser roller nip. The air plenum has a first nozzle arrangement directed at an angle to the roller so as to provide a positive air flow to strip a receiver member adhering to the roller therefrom, and a second nozzle arrangement directed substantially normal to the first nozzle arrangement to provide a positive air flow to cool a stripped receiver member and keep such receiver member from contacting the plenum.

Abstract: An image marking device adapted to reduce an exterior envelope thereof. The image marking device comprises a housing having an exterior surface and a slot formed through the exterior surface. An image forming location, such as a print head, is disposed in the housing for printing an image on a recorder medium supplied from a supply tray received in the slot. The tray and the housing define the exterior envelope. The tray is inwardly slidable in the slot from an extended position to an inserted position. A guide ramp is disposed in the housing for guiding the recorder medium from the supply tray to the print head and extends from near the tray to near the print head. The guide ramp has a hinged end portion disposed adjacent the tray in a first position as the tray is extended and inwardly movable to a second position to allow the tray to be fully inserted into the slot.

Abstract: A sheet transport apparatus capable of applying a predetermined force for transporting any kind of paper, including a sheet of thin paper, without forming transport wrinkles in the paper caused by a nipping pressure. The apparatus includes a hard roller 114 and a soft roller 112 for nipping a sheet of paper 10 therebetween. The soft roller is driven to transport the sheet using a frictional force generated from the nipping pressure applied by the soft and hard rollers. The hard roller is in a barrel-shape having a predetermined radial curvature "R", such that the nipping pressure decreases gradually along its axis from the center toward the periphery of a nipping face between two rollers. This causes a compressive stress against the sheet to shift smoothly from a portion of the sheet nipped by the soft and hard rollers to a portion free from the nipping pressure. Thus, the formation of transport wrinkles in the sheet can be prevented.

Abstract: A sorting conveyor apparatus of the present invention is structured such that when objects to be conveyed are respectively positioned in outlet sides of upstream sorting conveyors under a condition that the objects are positioned on each of downstream sorting conveyors, driving of the upstream sorting conveyors is stopped, such that when the objects are carried out from outlet sides of the downstream sorting conveyors, the driving of the upstream sorting conveyors are respectively restarted, such that when the objects are respectively positioned in the outlet side of each of the downstream sorting conveyors, the driving of each of the downstream sorting conveyors is stopped, and such that the driving of all the downstream sorting conveyors is synchronously restarted under a predetermined carry out condition.

Abstract: A paper transport apparatus that can reliably transport sheets of paper without the sheets overlapping or skewing, regardless of the type, size, thickness or condition of the sheets of paper. The paper transport apparatus includes a feed roller for feeding a sheet of paper along a transport path in a transport direction, and a retard roller for moving sheets of paper, other than a sheet to be transported by said feed roller, in a direction opposite to that of the transport direction. The feed roller and the retard roller are arranged in contact and in mutual opposition relative to the transport path. A rotational member is rotatably supported in opposition to the feed roller relative to the transport path. The rotational member is urged against the feed roller such that the rotational member can be moved away from the feed roller, at a location upstream of the position of contact between the retard roller and the feed roller, relative to the transport direction.

Abstract: A paper transport apparatus has an inclinable feed-in tray. Documents are drawn from the feed-in tray with a feed roller operating in conjunction with a retard roller. The rollers and the feed-in tray are supported on a pivotable frame. Pivoting of the frame permits the feed-in tray to be inclined to a desired angle to facilitate feeding of documents that do not readily slide while resulting in the documents being fed to the rollers at a constant entry angle irrespective of the angle of inclination of the feed-in tray.

Abstract: A rotational speed switcher which employs a synchronous motor which is low-cost, long-lasting and quiet, and when applied to a printer or document scanning apparatus or the like enables documents to be transported at either of two speeds selected by switching the motor between forward and reverse operating modes without changing the direction of rotation of the drive shafts.

Abstract: A color printer according to the present invention includes a clutch means, an urging member and a positional alignment mechanism. The clutch means is used for engaging and disengaging a driving force used to move a paper holder means. The urging member (e.g., a spring) is used to urge the paper holder means in a direction opposite to the printing direction. The positional alignment mechanism is used for mechanically determining the position at which printing is to start on the paper when the paper holder means is disengaged from the driving force by the clutch means and is urged by the urging member in the direction opposite to the printing direction.

Abstract: Provided are 2-hydroxyphenylbenzotriazol compounds with excellent ultraviolet absorbability and high thermal stability. They can be used as ultraviolet absorber for any polymer.

Abstract: A thermal recording apparatus is provided with a recording head and a sheet of recording paper shiftable relative to each other in a direction parallel to a row of heating elements through a distance which is smaller than the pitch of the heating elements, whereby the transfer process which has in the past been completed in one step is carried out in a multiplicity of steps. Accordingly, it is possible to obtain an image of higher density than can be obtained in the prior art.

Abstract: A drive device for relatively moving a fixing roller and a pressing roller of a copier employs a one-way clutch to brake the rotation of a cam shaft in moving the pressing roller from the fixing roller so as to avoid abrupt rotation of the cam shaft and the attendant noise and possible damage.

Abstract: A magnification changing device for a copying machine has a cam receiver which rides in a cam groove of a driving cam groove cylinder. A cam member is coupled to a bell crank which is, in turn, coupled through a connecting rod to a carriage supporting a main lens. The cam groove has a perpendicular portion, which is in a plane perpendicular to the axis of rotation of the cam groove cylinder, over a predetermined distance in a circumferential direction of the cam groove at a preset magnification setting position. As the cam groove cylinder is rotated, the cam receiver follows the cam groove until the cam receiver reaches the perpendicular portion of the cam groove, which accurately positions the lens.