Abstract: Herein disclosed is a pressurized slip casting apparatus which includes an upper mold carried vertically movably on a replacer which is made horizontally movably on a horizontal rail; and a lower mold for receiving the upper mold in alignment, when the upper mold descends, to cast a slip under pressure inbetween thereby to prepare a green body of a sanitation fixture or the like. Dehydrating assembly is carried vertically movably on the replacer. A spongy member is attached to the lower end of the dehydrating assembly for absorbing the water from the inside of the lower mold. A push plate is arranged at the side of the lower mold for pushing the spongy member to dehydrate the same.

Abstract: A casting mold for sanitary earthenware which has vertically dividable mold units having abutting surfaces with a porous portion of the same quality as a filter medium layer in the mold units and at a region between the porous portion and the exterior of the mold is disposed a sealing member, thereby preventing air leakage and slurry leakage from each mold unit.

Abstract: A pressure casting mold used to mold sanitary earthenware, including a porous layer composed mainly of resin material, a filler, a curing agent and water, the filler being formed of fibers and particulates of glass material, an average diameter of the fiber filler being 1 through 10 .mu.m, and an average length of the fibers being 20 through 100 .mu.m, and the diameter of the particulate filler being 10 through 50 .mu.m, thereby obtaining a porous layer which in use is hard to clog and is high in durability.

Abstract: A divisible slip-casting mold has filter layers which incorporate a combination of different types of fluid-flow conduits to achieve improved fluid-flow properties. The conduits include major portions of porous ropes arranged in curved lines and minor portions of blind holes installed in straight lines. The porous ropes are essentially installed in those portions of the filter layer where the ropes are readily or uniformly arranged, and the blind holes are essentially installed in those portions of the filter layer which exhibit poor fluid-flow properties and in which installation of porous ropes is difficult. Thus, substantially uniform fluid-flow properties are provided in the filter layers of the mold to enhance mold casting performance.

Abstract: An apparatus which includes a feeding device for feeding a document onto a document platen on which the document is irradiated by a light source to obtain a copy image and a discharging device for discharging the irradiated document from the document platen. The apparatus includes a housing unit shaped in the form of a plate for covering the document platen; a hinge for pivotally mounting the housing unit on the document platen, and first, second and third sub-housings made to protrude upwards from the top surface of the housing unit. The first sub-housing is disposed on one side of the housing unit and incorporates the feeding device. The second sub-housing is disposed on the opposite side to the one side and incorporates the discharging device. The third sub-housing is disposed on a side between the one side and the opposite side and incorporates both the hinge and driving mechanism for both the feeding device and the discharging device.

Abstract: A divisible slip-casting mold has filter layers which incorporate a combination of different types of fluid-flow conduits to improve the mechanical strength of the mold while providing the filter layers with substantially uniform fluid-flow properties. The conduits include major portions of blind holes installed in straight lines and minor portions of porous ropes arranged in curved lines. The porous ropes are essentially installed in those portions of the filter layer having a mechanical strength which is inferior to the predominant portions of the filter layer, and the blind holes are essentially installed in the predominant portions of the filter layer. Thus, improved mechanical strength and substantially uniform fluid-flow properties are provided substantially throughout the filter layers of the mold.

Abstract: A document conveyer for conveying a document to a predetermined position on platen glass of a copying machine, including; a document feeder for feeding the document from the outside of the document conveyer to a conveyance roller, located on the platen glass the conveyance roller, for conveying the document onto the platen glass by rotating in the forward direction, and also for subsequently bringing the trailing edge of the document into contact with an edge setting member, located adjacent to the platen glass, by rotating in the reverse direction so that the document is set at the predetermined position on the platen glass, an auxiliary conveyance roller, located on the platen glass, for conveying the document onto the platen glass by functioning with the conveyance roller when the document is longer than a predetermined size, and a roller retractor for retracting the auxiliary conveyance roller from the platen glass so that the auxiliary conveyance roller does not convey the document, in which the auxiliar

Abstract: A document feeding apparatus having a document feed unit adapted to feed documents, which are placed on a stacked document feed tray, sheet by sheet toward a document glass plate in an exposure unit. An auxiliary document feed tray is turnably housed in the document feed tray. The auxiliary document feed tray is turned so as to project over the stacked document feed tray when the documents are fed sheet by sheet by hand so that the front end portion of the auxiliary document feed tray narrows a document feed port of the document feed unit to render the stacked documents difficult to be inserted thereinto.

Abstract: The invention provides a sheet conveyance apparatus for conveying an original document sheet onto a platen glass through which the sheet is irradiated by light. The sheet conveyance apparatus having a driving means capable of moving conveyor belt in both directions so that, by moving the conveyor belt to the first-moving direction, the sheet is fed onto through the first side and carried away from through the second side of the platen glass. A delivery tray is mounted above the platen glass so that the sheet is delivered through first turning passage from the second side of the platen glass to the delivery tray. Between the conveyor belt and the delivery tray is provided a second turning passage so that the sheet is returned through the second turning passage from the first turning passage to the second side of the platen glass.

Abstract: A document feeder installed on an electrophotographic copying machine, and this document feeder having transport rollers driven by a drive unit to carry a document sheet. The document feeder comprises a flexible sheet having holes, and being installed over a platen glass. The document feeder also comprises document transport rollers which come into contact with a document sheet on the platen glass through the holes in the flexible sheet in order to carry the document sheet on the platen glass.

Abstract: A method for drain-casting a slip to obtain a substantially hollow molded article 42 is provided, by the use of an apparatus including a divisible mold 21 including an upper mold portion 22, a lower mold portion 23, and at least two side mold portions 24, 25 to form a mold cavity 38, each mold portion containing a filter member and a water-drainage means, and the lower portion having a slip supply duct 40.

Abstract: A mold (1) for cast-molding a slip is provided, which comprises a divsible casting mold including a plurality of mold portions to form a mold cavity (4) when mated together; each mold portion including an air-tight housing (2), an intermediate layer (5) of coarsely porous structure adjacent to the air-tight housing (2), and a solid synthetic resin filter layer (3) of fine open-cell structure; a slip supply duct (8) being connected with said mold cavity (4) and communicated with the outside of the air-tight housing (2); a fluid-flowing duct (9) being connected with said coarse intermediate layer (5) and communicated with the outside of the air-tight housing (2); said filter layer (3) being permeably joined to the coarse intermediate layer (5), and having substantially precise shape and dimension of substantially uniform fine open-cell structure.

Abstract: An apparatus for drain-casting a slip comprises a mold including at least two divisible mating mold portions to form a mold cavity, a slip tank, a pump, air compressors, suction pumps, valves and tubings to connect them accordingly, supporting means of the mold portions, and a moving stand to receive the molded article thereon. The mold portion includes an air-tight vessel and a filter member inside the vessel, the filter member contains a water-drainage means, and the drainage means is communicated with the outside of the vessel. One of the mold portions has a slip supply duct and one other mold portion has an overflow duct, which ducts are communicated with the outsides of the vessels.

Abstract: An apparatus for drain-casting a slip comprises a mold including at least two divisible mating mold portions to form a mold cavity, a slip tank, a pump, air compressors, suction pumps, valves and tubings to connect them accordingly, supporting means of the mold portions, and a moving stand to receive the molded article thereon. The mold portion includes an air-tight vessel and a filter member inside the vessel, the filter member contains a water-drainage means, and the drainage means is communicated with the outside of the vessel. One of the mold portions has a slip supply duct and one other mold portion has an overflow duct, which ducts are communicated with the outsides of the vessels.