Abstract: A pulp concentration adjusting technology for realizing a used paper recycling apparatus of furniture size that can be installed in a small shop or general household. The used paper recycling apparatus having a pulp making unit and a paper making unit includes a beating concentration adjusting unit for adjusting the beating concentration of the used paper pulp in the pulp making unit, and a paper making concentration adjusting unit for adjusting the paper making concentration of the used paper pulp in the paper making unit, in which the beating concentration adjusted in the beating concentration adjusting unit is set at a high concentration capable of beating in the pulp making unit, and the paper making concentration adjusted in the paper making concentration adjusting unit is set at a low concentration capable of making paper in the paper making unit.

Abstract: A semiconductor light receiving device includes: a first semiconductor light receiving element that is provided on a semiconductor substrate and has a mesa structure having an upper electrode to be coupled to an electrode wiring of a mounting carrier and a lower electrode; a first mesa that is provided on the semiconductor substrate and has an upper electrode coupled electrically to a lower electrode of the first semiconductor light receiving element with a wiring provided on the semiconductor substrate; and a second mesa that is provided on the semiconductor substrate and has an upper electrode that has a same electrical potential as the upper electrode of the first semiconductor light receiving element when coupled to the electrode wiring on the mounting carrier.

Abstract: The present invention presents a cleaning technology in a used paper recycling apparatus capable of assuring a stable used paper recycling operation all the time, by removing and cleaning securely the used paper pulp remaining in the parts of the apparatus components of a used paper recycling apparatus of furniture size. The cleaning method of the cleaning system includes a white water cleaning process of circulating white water dewatered and collected in the paper making unit for manufacturing regenerated paper from used paper pulp in a pulp making unit and a pulp concentration adjusting unit of apparatus components for composing the used paper recycling apparatus by a white water cleaning unit, and cleaning the pulp making unit and the pulp concentration adjusting unit, and clean water cleaning processes of cleaning the paper making unit by clean water by a clean water cleaning unit.

Abstract: In a very narrow used paper processing space of a used paper recycling apparatus of furniture size, the present invention presents a recycled paper smoothing technology for manufacturing securely into a wrinkle-free and smooth recycled paper from wet paper made and formed in a paper making processing unit of a paper making unit.

Abstract: In a used paper recycling apparatus of furniture size that can be installed in a small shop or room, this is a belt meandering preventive device of a simple structure for executing the paper making process for manufacturing used paper pulp at low trouble rate and high reliability. A rolling roller rolls on a mesh belt of a paper making net conveyor unit for processing and conveying used paper pulp while applying a tension a, roller oscillating unit oscillates this rolling roller in a direction intersecting with the running direction of the mesh belt, and the rolling roller is maintained at the neutral position so as to be perpendicular to the running direction of the mesh belt when the running position of the mesh belt is in an appropriate running range, and the rolling roller is directed to a meandering correcting direction for moving the running position of the mesh belt into the appropriate running range when the running position of the mesh belt is out of the appropriate running range.

Abstract: In a used paper recycling apparatus of furniture size that can be installed not only in a big office, but also in a small shop or general household room, this is a paper making device for making and producing recycled paper that is hardly lowered in strength if re-used repeatedly. The running condition of the mesh belt which runs while filtering and dewatering the pulp suspension is set in a range of maintaining the pulp fibers in the pulp suspension supplied on the mesh belt in a non-directional and disorderly array state, and therefore the manufactured recycled paper is free from so-called “texture of paper,” and the paper quality is uniform in anisotropy not different in longitudinal and lateral directions, and is sufficiently high in strength.

Abstract: In a narrow used paper processing space of a used paper recycling apparatus of furniture size, this is a dewatering device for executing smoothly and efficiently a dewatering process as a principal component of a paper making process for manufacturing used paper pulp. Being disposed in a linkage location between a mesh belt and a smooth surface belt, and configured to roll and squeeze the mesh belt and the smooth surface belt from the upper and lower sides in a compressed state, the apparatus includes a preliminary dewatering roll unit for squeezing and dewatering preliminarily the wet paper on the mesh belt, and a final dewatering roll unit for squeezing and dewatering the wet paper on the mesh belt preliminarily dewatered in the preliminary dewatering roll unit to obtain dry paper of specified water content.

Abstract: To provide an add-in material to be added to a porous molded body base, the add-in material being capable of developing a pore of appropriate size efficiently without degrading the formability and productivity of a porous molded body, particularly a porous fired body when producing the porous molded body. A shrinkable fiber composed of a thermoplastic resin and to be dispersed in a base of a porous molded body, particularly a porous fired body, wherein the shrinkable fiber has a fiber diameter of 10 to 40 ?m, a fiber length of 1 to 20 mm, and a dry-heat shrinkage percentage of at least 8% when subjected to heat treatment at 80° C. for 5 minutes.

Abstract: The invention presents a pulp manufacturing technology for realizing a used paper recycling apparatus of furniture size that can be installed not only in a large office, but also in a small shop or general household. In the beating process of the pulp making process for fragmenting and beating the used paper for manufacturing used paper pulp, a grinder having a pair of beating disks rotated relatively, beating action surfaces of the beating disks are disposed oppositely across a tiny beating gap, thereby a used paper pulp circulation route is formed, in which the used paper pulp beaten by the grinder is processed in the beating process while being circulated in the used paper pulp circulation route, and the beating gap of the beating action surfaces is adjusted to be narrower gradually from the beginning till the end of the beating process. As a result, in a limited narrow working space, a smooth and efficient beating operation is realized from the beginning till the end of the beating process.

Abstract: The invention presents a beating technology of used paper processing apparatus of furniture size, capable of preventing leak or disclosure of confidential information, personal information or any other information securely and capable of holding a high confidentiality, that can be installed not only in a large office, but also in a small shop or general household. In the beating process of the beating unit in the used paper processing apparatus of furniture size, by using at least one grinder having beating action surfaces disposed oppositely across a tiny beating gap, and a pair of beating disks rotating relatively, the beating gap of the beating action surfaces is controlled or adjusted to be narrower gradually from the beginning till the end of the beating process. As a result, a smooth and efficient beating operation is realized from the beginning till the end of the beating process.

Abstract: The invention presents a paper machine for a used paper recycling apparatus being installed in a room of a small shop or the like, friendly to the environment, low in running cost, and capable of maintaining a high confidentiality. The paper machine includes a paper making process unit for manufacturing wet paper from slurry pulp suspension sent from the pulp making section of a preceding process, and a drying process unit for drying the wet paper manufactured in the paper making process unit and making recycled paper, in which a processing conveyor is disposed between the paper making process unit and the drying process unit extending in the overall length of the paper making process and the drying process, and this processing conveyor is manufactured in a form of net belt conveyor having a running mesh belt of mesh structure composed of innumerable mesh cells for filtering and dewatering the pulp suspension.

Abstract: To present a paper manufacturing apparatus for used paper recycling apparatus small enough to be installed in a room of small shop or the like, friendly to the environment, low in running cost, and high in confidentiality. The paper manufacturing apparatus includes a paper making process unit for manufacturing wet paper from pulp suspension sent from a pulp making section in preceding process, the paper making process unit includes a paper making conveyor for manufacturing and conveying the pulp suspension, the paper making conveyor is composed of a mesh belt of paper making mesh structure of numerous mesh cells for filtering and dewatering the pulp suspension disposed so as to run straightly toward its running direction, and the paper making process length in the mesh belt is set in a range of straight running direction length of the mesh belt in the apparatus case of furniture size. As a result, a used paper recycling apparatus of small size and simple structure is realized.

Abstract: A pulp feeder for used paper recycling apparatus being installed in a room of a small shop or the like, friendly to the environment, low in running cost, and capable of maintaining a high confidentiality is presented. The pulp feeder includes a partition member disposed slidably on the downside of a running endless mesh belt, and a paper making frame body disposed slidably on the upside of the mesh belt, and an overflow gate is provided in the paper making frame body for keeping constant the water level of the collected pulp suspension, and the pulp suspension supplied in the paper making frame body is collected up to a specific water level defined by the overflow gate, and is uniformly diffused and supplied on the upside of the running mesh belt. Accordingly, if the supply water volume of pulp suspension fluctuates, the water level of pulp suspension staying in the paper making frame body is always kept constant, and the weight of the wet paper manufactured on the mesh belt is stabilized.

Abstract: To present a paper machine for a used paper recycling apparatus small enough to be installed in a room of small shop or the like, friendly to the environment, low in running cost, and high in confidentiality. The paper machine includes a paper making process unit for manufacturing wet paper from slurry pulp suspension sent from the pulp making section in preceding process, a drying process unit for drying and regenerating the wet paper manufactured in the paper making process unit, and a calender roll unit for calendering the dry paper dried in the drying process unit, in which the calender roll unit is disposed adjacently to the downstream side position of the drying process unit, and calenders the dry paper discharged from the drying process unit by rolling and pressing from both face and back sides.

Abstract: The invention presents a cleaning method and a cleaning method for realizing a used paper recycling apparatus of furniture size, being installed in a room of a small shop or general household, friendly to the environment, and low in running cost. In the cleaning system, the white water dewatered and collected in the paper making section is used as cleaning water, and circulated in the pulp making section and pulp concentration adjusting section, so that the pulp making section and pulp concentration adjusting section may be cleaned. As a result, used paper pulp remaining in the parts of apparatus sections can effective cleaned and removed, troubles due to drying of remaining used paper pulp can be avoided, such as sticking of valves and failure of pumps due to dried used paper pulp, and occurrence of error in concentration adjustment due to residual pulp may be prevented.

Abstract: The invention presents a pulp concentration adjusting method and its device for realizing a used paper recycling apparatus being installed in a room of a small shop or the like, friendly to the environment, low in running cost, and capable of maintaining a high confidentiality. The pulp concentration adjusting section is characterized by dividing a specified portion from the whole volume of used paper pulp manufactured in pulp making section in preceding process, adding water for adjusting concentration to the divided portion of used paper pulp, and adjusting the total volume of the divided portion of used paper pulp and water to a specified value, thereby preparing a pulp suspension of specified concentration. In this manner, by adjusting the concentration of used paper pulp in dividing portions (small portions), the water consumption can be saved substantially and the apparatus size is reduced, while enhancing the processing capacity.

Abstract: In a method for anodizing an aluminum alloy to form an anodic oxide film on a surface of the aluminum alloy using pulsed electric power, a short circuit is formed, after application of a positive pulse voltage, between an anode for anodic oxidation and a cathode for anodic oxidation for a short-circuit duration of not longer than 15 ?s during non application of the pulse voltage. The pulsed electric power has a waveform having a cycle composed, in the order, of a pulse voltage application duration (T+), a dead time (Td) and a short-circuit duration (Ts). Then, no or almost no negative current is allowed to flow, and the film formation rate can be increased to improve productivity.

Abstract: A used paper recycling apparatus being installed in a room of a small shop or the like, friendly to the environment, low in running cost, and capable of maintaining a high confidentiality.

Abstract: A semiconductor light-receiving device includes: a first conduction layer of a first conduction type; a light absorption layer provided on the first conduction layer; a multiplication layer provided on the light absorption layer; a window layer provided on the multiplication layer, the window layer being undoped or having the first conduction type; and a second conduction region provided in the window layer by impurity diffusion, the second conduction region having a band gap wider than that of the light absorption layer and having a second conduction type different from the first conduction type. The following condition is satisfied: X/W?(M?1)2/(2M) where W is a film thickness from a lower surface of the light absorption layer and an upper surface of the multiplication layer, X is a film thickness of the second conduction region, and M is a multiplication factor.

Abstract: A used paper recycling apparatus capable to be installed in small office or general household, friendly to environment and low in running cost, and assuring high confidentiality. A used paper recycling apparatus comprising a pulp making section for crushing and beating used paper and making into pulp, a paper making section for recycling paper by making used paper pulp from the pulp making section, and a control section for driving and controlling by interlocking the pulp making section and paper making section, which are incorporated in a furniture size apparatus case, in which the pulp making section includes a crushing unit for stirring and grinding the used paper, and a beating unit for beating the crushed used paper from the crushing unit, and the crushing unit and beating unit are circulating the used paper pulp.