Abstract: A paper sheet take-out apparatus comprises a paper feed table on which paper sheets are placed as a stack, a take-out rotor which absorbs and takes out the uppermost paper sheet placed on the paper feed table, and a positioning mechanism which positions the uppermost paper sheet with respect to the take-out rotor by causing an absorption block to absorb the paper sheet before taking out the uppermost paper sheet.

Abstract: A sheet cutting apparatus is provided with a conveying device which conveys sheets along a conveying path, a counting device which counts the sheets conveyed by the conveying device, a cutting device which receives and cuts the sheets counted by the counting device and carried out of the conveying path, and a bending device which bends a portion of the conveying path located downstream of the counting device at a predetermined angle, and is located to lie between the counting device and the cutting device.

Abstract: A sheet material processing apparatus comprises a second sorting section configured to allow the sheet which is processed by the processing section to be sorted in a third or a fourth direction based on processing information of a processing section, a stacking section configured to allow the sheet which is sorted by a second sorting section to be stacked thereon, a second conveying path configured to allow the sheet which is sorted by a second sorting section in the fourth direction to be conveyed, a meeting site where the first and second conveying paths meet, and a “discharge” stacking section configured to allow the sheet which is conveyed along the first or second conveying path and passed through the meeting site to be stacked thereon.

Abstract: The present invention refers to a mixture comprising alpha CaSO4×½ H2O, CaSO4×2 H2O, a combination of a hardening accelerator, a hardening retarder and a setting expansion inhibitor, and optionally a surfactant. The mixture can be used to prepare a die having an extremely high setting expansion.

Abstract: Sheet take-out apparatus 2 includes sheet-feeding member 22 on which sheets P are placed, air spout unit 26 that spouts out air toward a side of the sheets depressed by depression unit 27, take-out unit 30 that takes out a sheet from the sheets P toward which air spouts out the air and depression unit 27 that depress the sheets against sheet-feeding member 22 on a rear edge side located behind a central portion of the sheets P with respect to a taking-out direction of take-out unit 30. Further, a method of taking-out sheets by means of sheet take-out apparatus 2 is disclosed. Sheet take-out apparatus 2 and a method of taking out sheets are capable of taking out one necessary sheet at a time regardless of surface conditions of the sheets.

Abstract: A paper sheet take-out apparatus comprises a paper feed table on which paper sheets are placed as a stack, a take-out rotor which absorbs and takes out the uppermost paper sheet placed on the paper feed table, and a positioning mechanism which positions the uppermost paper sheet with respect to the take-out rotor by causing an absorption block to absorb the paper sheet before taking out the uppermost paper sheet.

Abstract: The present invention refers to a mixture comprising alpha CaSO4×½H2O, CaSO4×2H2O, a combination of a hardening accelerator, a hardening retarder and a setting expansion inhibitor, and optionally a surfactant.

Abstract: A dental gypsum bonded investment composition comprising 100 parts by weight of a mixture comprising (a) .alpha.-hemihydrate gypsum as a binder and (b) quartz and/or cristobalite as a refractory material, and optionally, (c) one or more aggregates selected from the group consisting of metallic oxides, metallic carbides, and metallic nitrides, which can substitute a part of the refractory material, having from 0.01 to 1.0 part by weight of a poly-tetrafluoroethylene resin and optionally, from 0.001 to 0.05 part by weight of one or more anionic surfactants selected from the group consisting of alkylbenzenesulfonates and alkylsulfates mixed therewith, is disclosed. The dental gypsum bonded investment composition of the invention keeps the fine particles to have a stable performance without being removed by the pneumatic transportation at the time of production, has superior heat resistance, and can be used for casting of alloys having a high melting point such as casting alloys for metalceramic restorations.