Abstract: A sheet supply apparatus includes: an endless belt which has a plurality of vents penetrating from a front surface to a rear surface and is stretched around a plurality of rollers including a drive roller and driven by the drive roller; a suction section having a suction port which suctions air and faces to a rear surface of the belt, wherein the sheet supply apparatus suctions a sheet to the front surface of the belt through vents of the belt facing to the suction port and carries the sheet, and the sheet supply apparatus further includes a guide member which guides a leading edge of the sheet being conveyed to a down stream side of the suction port in a conveyance direction, in a direction separating from the front surface of the belt.

Abstract: A sheet conveyance apparatus having: a conveyance roller, wherein a surface roughness Ra of a surface layer remains in a range from 8 ?m to 30 ?m, at a stage where a total length of sheets conveyed reaches at 42,000 m.

Abstract: A sheet supply apparatus including: a suction conveyance mechanism which suctions a topmost sheet of a plurality of sheets stacked and conveys the suctioned sheet to a sheet conveyance path; an outlet elevation mechanism which moves an air outlet to and from a first position at which the air outlet faces the side of the stacked sheets and a second position at which the air outlet faces a side of the sheet suctioned onto the suction surface; a suction detection sensor; a sheet supply detection sensor; and a control section which moves the air outlet to the first position or to the second position by controlling the outlet elevation mechanism based on detections by the sensors.

Abstract: An sheet supply apparatus is provided which controls vertical movement of a sheet support tray so that a position of an upper surface of stacked sheets on the support tray is adjusted to a height located below a separation air outlet, wherein adsorption is possible at the height and so that a fall region, in which a pressure difference with respect to a separation region is generated, is formed below the separation region in which the separation air blasted from the separation air outlet is blasted along the sheet adsorbed on the adsorbent surface.

Abstract: A spline shaft that can suppress occurrence of stick slip by measures other than just simply making the surface roughness smaller. The spline shaft includes a first shaft with an outer-peripheral spline formed, and a second shaft with an inner-peripheral spline, which engages with the outer-peripheral spline peripherally and that is made slidable axially, formed. And, at least either one of the outer-peripheral spline and the inner-peripheral spline includes a substrate whose surface is formed to a predetermined surface roughness, and an amorphous carbon-system hard thin film, which coats and forms the surface of substrate.

Abstract: A sheet feeding device, includes a sheet loading table; a sheet feeding member that feeds a sheet from an uppermost portion of sheets stacked on the sheet loading table; a regulating member that regulates a side of sheets, in a transverse direction orthogonal to a sheet feeding direction; an opening and closing mechanism that opens and closes a sheet feeding section; a lowering mechanism that lowers the sheet loading table that holds sheets at a sheet feeding position, to a lower position by opening the opening and closing mechanism; an adjusting mechanism that adjusts a position of the regulating member in the transverse direction; and a holding mechanism that holds a position of the sheet loading table so as to hold the sheets at the sheet feeding position even when the opening and closing mechanism is opened.

Abstract: A sheet feeding device, having: a sheet feeding tray which stacks a paper sheet bundle formed by a plurality of sheets; a first blower which blows air to a side edge of the paper sheet bundle stacked on the sheet feeding tray; a second blower which blows air to a leading edge of the paper sheet bundle in a sheet conveyance direction from a forward side of the paper sheet bundle in the sheet conveyance direction; and an adsorption conveyance section which adsorbs a topmost sheet of the paper sheet bundle stacked on the sheet feeding tray and conveys the topmost sheet, wherein a first area in which the adsorption conveyance section is provided, and a second area in which a ventilation port of the first blower is provided, respectively includes an overlapping area in which the first area and the second area overlap on the sheet conveyance direction.

Abstract: As a guide member provided on a conveyance path through which a sheet is conveyed toward a separation device, a guide member having a sloping guide surface is used, and the aforesaid guide member is arranged so that an uppermost stream point of the sloping guide surface may be positioned at the upstream side of a separation point of the aforesaid separation device and a lowermost stream point of the aforesaid guide surface may be positioned at the downstream side of the aforesaid separation point.

Abstract: A sheet feeding apparatus including a sheet tray for storing a plurality of sheets of paper, the sheet tray capable of being pulled out in a direction perpendicular to a sheet feed direction; a pair of side regulating members for regulating both lateral surfaces of the sheets, the regulating members being provided over the sheet tray and perpendicular to the sheet feed direction; a vacuum type belt to suck a sheet of paper from above and feed the sheets; and a moving mechanism for moving one of the belt and one of the regulating members that is provided on a back side in the direction of pulling out the sheet tray in the vertical directions, in such a way that, when the sheet tray is pulled out, the uppermost end of the regulating member is lower than the lowermost surface of the vacuum type belt.

Abstract: A screw compressor comprising: a low pressure stage compressor body; a high pressure stage compressor body that further compresses a compressed air compressed by the low pressure stage compressor body; pinion gears for example, respectively, provided on, for example, a male rotor of the low pressure stage compressor body and, for example, a male rotor of the high pressure stage compressor body; a motor; a bull gear for example, provided on a rotating shaft of the motor; and an intermediate shaft supported rotatably and provided with a pinion gear, which meshes with the bull gear, and a bull gear, which meshes with the pinion gears. Thereby, it is possible to make the motor relatively low in rotating speed while inhibiting the gears from being increased in diameter, thus enabling achieving reduction in cost.

Abstract: A sheet feeding device, having: a sheet feeding tray which stacks a paper sheet bundle formed by a plurality of sheets; a first blower which blows air to a side edge of the paper sheet bundle stacked on the sheet feeding tray; a second blower which blows air to a leading edge of the paper sheet bundle in a sheet conveyance direction from a forward side of the paper sheet bundle in the sheet conveyance direction; and an adsorption conveyance section which adsorbs a topmost sheet of the paper sheet bundle stacked on the sheet feeding tray and conveys the topmost sheet, wherein a first area in which the adsorption conveyance section is provided, and a second area in which a ventilation port of the first blower is provided, respectively includes an overlapping area in which the first area and the second area overlap on the sheet conveyance direction.

Abstract: An image forming apparatus includes: a common conveyance path through which a sheet fed from a sheet feed tray is conveyed from a registration roller to a transfer section; a direct conveyance path through which the sheet is directly fed from the sheet feed tray to the common conveyance path; a delay conveyance path in which the sheet after being branched from the direct conveyance path is joined to the common conveyance path, and is caused to delay in being fed from the sheet feed tray to the common sheet conveyance path; a conveyance section which conveys the sheet fed from the sheet feed tray to the transfer section; and a controller which controls the conveyance section to convey once the sheet fed from the sheet feed tray from the direct conveyance path to the delay conveyance path, and thereafter to convey to the common conveyance path.

Abstract: A sheet supplying device which supplies a sheet, including: a sheet supplying tray which stacks a bundle of sheets; a first air blowing section which blows air against a side of the bundle of sheets stacked on the sheet supplying tray; a second air blowing section which blows air from downstream of the bundle of sheets in a sheet conveyance direction, onto a leading section of the sheets; a vacuum conveyance section which vacuums an uppermost sheet of the bundle of sheets and conveys the sheets one by one; a shielding member which shields air blown from the first air blowing section; a vacuum detection sensor which detects that a sheet has been vacuumed by the vacuum conveyance section; and a control section which controls the shielding member to open so that air generated by the first air blowing section is blown to the bundle of sheets.

Abstract: A sheet conveyance apparatus having; a conveyance roller, wherein a surface roughness Ra of a surface layer remains in a range from 8 ?m to 30 ?m, at a stage where a total length of sheets conveyed reaches at 42,000 m.

Abstract: Disclosed is a sheet transport device having: a registration roller to transport a sheet after correcting a skew of the sheet; a drive source to drive the registration roller; a frame body; and a rotation resisting body which is connected to the registration roller on one side and is connected to the frame body on the other side, to create a resisting force against a rotation of the registration roller in a sheet transport direction.

Abstract: The present invention relates to a novel reactive medical substance having the bone restoration function, comprising a particular methacrylic acid ester, polymer and osteogenic factor. The reactive medical substance of the present invention has a mechanical strength which is increased by a reaction and is used in a living body for a long period of time. The osteoinduction-assistance composition having the bone restoration function of the present invention is characterized in that the composition maintains suitable elasticity, and can be easily formed with scissors or a sharp blade upon use. The reactive medical substance of the present invention comprises a mixture of a methacrylic acid ester, a polymer and a biological absorbing material, and can regenerate a mocosa, form a regenerated epithelium, and stabilize a transplanted piece.

Abstract: In an image forming apparatus having a registration roller that aligns the leading edge of the sheet and feeds it to the image forming section, a plurality of loop forming rollers that convey the sheet, and a loop forming space for forming a loop in the sheet are placed on the upstream side of the registration roller, and a plurality of loop amount detecting sensors that detect the amount of loop are provided, and the image forming apparatus has the feature that it is provided with a mechanism and a control device for varying the rotational speeds of said plurality of loop forming rollers individually and separately, wherein the loop amounts in a cross-section of the sheet along the sub-scanning direction are adjusted to be at a prescribed value.

Abstract: A sheet feeding device, includes a sheet loading table; a sheet feeding member that feeds a sheet from an uppermost portion of sheets stacked on the sheet loading table; a regulating member that regulates a side of sheets, in a transverse direction orthogonal to a sheet feeding direction; an opening and closing mechanism that opens and closes a sheet feeding section; a lowering mechanism that lowers the sheet loading table that holds sheets at a sheet feeding position, to a lower position by opening the opening and closing mechanism; an adjusting mechanism that adjusts a position of the regulating member in the transverse direction; and a holding mechanism that holds a position of the sheet loading table so as to hold the sheets at the sheet feeding position even when the opening and closing mechanism is opened.

Abstract: A screw compressor comprising: a low pressure stage compressor body; a high pressure stage compressor body that further compresses a compressed air compressed by the low pressure stage compressor body; pinion gears for example, respectively, provided on, for example, a male rotor of the low pressure stage compressor body and, for example, a male rotor of the high pressure stage compressor body; a motor; a bull gear for example, provided on a rotating shaft of the motor; and an intermediate shaft supported rotatably and provided with a pinion gear, which meshes with the bull gear, and a bull gear, which meshes with the pinion gears. Thereby, it is possible to make the motor relatively low in rotating speed while inhibiting the gears from being increased in diameter, thus enabling achieving reduction in cost.

Abstract: A sheet supplying device, including a sheet stacking member which can stack various sized sheets, a side edge alignment member which moves perpendicular to a sheet supplying direction and aligns at least one of side edges of the stacked sheets placed on the sheet stacking member, and an auxiliary side edge alignment member which is provided on the side edge alignment member and ejects in a moving direction of the side edge alignment member and which aligns stacked sheets whose width is narrower than that of the stacked sheets which are to be aligned by the side edge alignment member.