Abstract: Provided is a sheet feeding apparatus capable of reliably feeding thin sheets in a separated state and an image forming apparatus including the same. A floating preventing member which regulates an upward movement of an uppermost sheet floated by air is provided so as to be lifted and lowered between a tail end regulating plate regulating the position of the sheet above a tray and an adsorbing and conveying portion which conveys the uppermost sheet floated by the air blowing from a downstream air blowing portion. The adsorbing and conveying portion is moved to a predetermined regulating position higher than the height position of the uppermost sheet and lower than the feeding surface of the adsorbing and conveying portion before the sheet is floated, which suppresses the movement of the sheet toward the tail end side caused by the curling of the sheet due to the air.

Abstract: Provided are a high-quality sheet feeding apparatus which can detect multifeeding of sheets in a wide range of the sheet conveying direction and realize a stable conveying state, and an image forming apparatus therewith. A CPU controls a multifeeding detection sensor to detect multifeeding of sheets at a plurality of transmission points P1 to P5 of the multifeeding detection sensor. This CPU sets a plurality of transmission points across the front end and rear end of a sheet moving in the sheet conveying direction, based on size information of the sheet read from a storage portion and the timing of detection passing of the sheet in a horizontal path first sensor. This enables detection of multifeeding across the front end and rear end of a preceding sheet in the sheet conveying direction, and also enables detection of unseparated multifeeding that a subsequent sheet follows overlapping the preceding sheet.

Abstract: A sheet feeding device includes drawing and conveying a sheet, applying negative pressure for sheet suction via a suction opening, moving a shutter member between a closing position where the suction opening in an upstream side in a sheet feeding direction is partially closed and an open position where the suction opening is opened, and controlling the shutter member to follow a preceding sheet that is drawn onto the suction conveyance member to move to the downstream side in the feeding direction to close the suction opening, and return to an open position at a predetermined timing to draw the sheets onto the suction conveyance member in a state where an upstream edge of the preceding sheet in the feeding direction and a downstream edge of the subsequent sheet in the feeding direction are overlaid by a predetermined amount.

Abstract: A sheet feeding apparatus and an image forming apparatus are provided. When sheets are adsorbed to an adsorption conveyance belt, a suction shutter is switched from a block position to block a negative pressure to an adsorption position to adsorb the sheets by the negative pressure. When the sheets conveyed in an overlapping manner reaches a predetermined number and the next sheet is adsorbed, the timing to switch the suction shutter to the adsorption position is delayed compared to the timing at which a preceding sheet adsorbed in advance and a subsequent sheet overlap.

Abstract: A network management system (NMS) maintains topology information of a network allowing coexistence of PDH network and SDH network. The network management system (NMS) generates a topology data for path calculation in a path calculation device in accordance with the topology information of the network after converting topology information of the PDH network into topology information of an SDH network. The path calculation device calculates the optimum path in answer to a path calculation request from the network management system (NMS) on the basis of the topology data for path calculation generated therein, and returns the calculation result. The network management system (NMS) reverts the SDH network topology information generated through conversion from the PDH network topology information among the SDH network topology information included in the calculation result received from the path calculation device to the PDH network topology information before the conversion.

Abstract: A sheet feeding apparatus and an image forming apparatus are provided. Timing when a subsequent sheet is adsorbed by an adsorbing and conveying mechanism of a sheet feeding device which adsorbs and conveys sheets blown up by air blowing is controlled, and the subsequent sheet is conveyed while being overlapped partially at an overlapping amount with a preceding sheet Sa adsorbed by the adsorbing and conveying mechanism earlier regardless of the size, basis weight, and kind of sheets.

Abstract: An image forming system controls a handover timing of sheets between an image forming apparatus and a sheet feeding apparatus with high precision. A transmission path transmits information between the image forming apparatus and the sheet feeding apparatus. A signal line transmits a handover signal output from the image forming apparatus to the sheet feeding apparatus. A first control unit transmits the handover signal to the sheet feeding apparatus after transmitting a feeding start request to the sheet feeding apparatus. A second control unit controls the sheet feeding apparatus to convey the sheet to a predetermined position in the sheet feeding apparatus in accordance with a reception of the feeding start request and of conveying the sheet at the predetermined position to the image forming apparatus in accordance with a reception of the handover signal.

Abstract: Provided is a sheet feeding apparatus capable of reliably feeding thin sheets in a separated state and an image forming apparatus including the same. A floating preventing member which regulates an upward movement of an uppermost sheet floated by air is provided so as to be lifted and lowered between a tail end regulating plate regulating the position of the sheet above a tray and an adsorbing and conveying portion which conveys the uppermost sheet floated by the air blowing from a downstream air blowing portion. The adsorbing and conveying portion is moved to a predetermined regulating position higher than the height position of the uppermost sheet and lower than the feeding surface of the adsorbing and conveying portion before the sheet is floated, which suppresses the movement of the sheet toward the tail end side caused by the curling of the sheet due to the air.

Abstract: A sheet feeding apparatus and an image forming apparatus are provided which can reduce the variability of overlapped portions when feeding sheets in an overlapping manner. When sheets are adsorbed to an adsorption conveyance belt, a suction shutter is switched from a block position to block a negative pressure to an adsorption position to adsorb the sheets by the negative pressure. When the sheets conveyed in an overlapping manner reaches a predetermined number and the next sheet is adsorbed, the timing to switch the suction shutter to the adsorption position is delayed compared to the timing at which a preceding sheet adsorbed in advance and a subsequent sheet overlap.

Abstract: A network management device includes a topology information generation unit which generates topology information of multi-layer network, a link identification information setting unit which sets identification information to identify links of the multi-layer network, a topology information transmission unit which transmits, to a route calculation engine, the topology information of the multi-layer network generated by the topology information generation unit, a shortest route calculation request transmission unit which transmits, to the route calculation engine, a calculation request of a shortest route, a multi-layer restriction checking unit which checks a restriction condition to the shortest route information received from the route calculation engine, based on the identification information of each link set by the link identification information setting unit, and an exception link selection unit which selects an exception link when the shortest route information transmitted from the route calculation eng

Abstract: There is provided a sheet feeding device in which a sheet is discriminated at preliminary loosening before feeding, and is set to be controlled according to the type of the sheet by a simple configuration without requiring a special configuration. In the sheet feeding device in which air is blown onto a sheet stack, and a sheet floating at the uppermost level by the blowing is absorbed and conveyed, a sheet type is discriminated, based on a moving amount of the tray, at preliminary loosening before sheet feeding after setting the sheet in a tray.

Abstract: A sheet feeding apparatus includes a back end detecting sensor which detects a back end side in a conveying direction of the topmost sheet stacked on the sheet tray, a front end detecting sensor which detects a front end side in the conveying direction of the topmost sheet, and a CPU. The CPU disables start of a sheet feeding operation of a feeding unit in a case where the back end detecting sensor and the front end detecting sensor do not detect the sheet when the sheet tray is lifted toward the feeding unit and then stopped in a predetermined position. Accordingly, a state that a feeding failure is possibly caused is detected before feeding the sheets so as to eliminate the wasteful feeding operation.

Abstract: An upper air blowing portion that blows air from above a sheet held by a tray is provided above the portion between a trailing end restricting plate and an absorption conveyance portion. A controlling portion drives the upper air blowing portion so as to restrict the movement of the sheet in the direction reverse to the sheet feeding direction, when the sheet held on the tray moves in the direction reverse to the sheet feeding direction with the air blown by the air blowing portion.

Abstract: In order to reduce the stack failure of a sheet bundle, there is provided a sheet stacking/aligning apparatus comprising: a stack tray for stacking sheets thereon; and a rear end aligning member for pushing and aligning the rear end of a sheet conveyed onto the stack tray. The rear end aligning member includes sheet holding paddle for holding the sheets stacked on the stack tray.

Abstract: A sheet feeding device is provided to separate a sheet from a plurality of stacked sheets and feed the sheet. The sheet feeding device includes a sheet stacking portion on which the sheets are stacked, a suction conveyance belt which separates the sheets stacked on the sheet stacking portion, one by one and feeds the sheet, and a separation rotating roller which is rotatable upon abutting on a rear portion, in a feeding direction, of the sheets stacked on the sheet stacking portion. The separation rotating roller rotates in a direction which returns the sheet in synchronization with sheet feeding operation performed by the suction conveyance belt.

Abstract: A sheet feeding apparatus and an image forming apparatus which can certainly feed sheets without being influenced by an aging change of fan characteristics are provided. An air is blown to sheets stacked on a tray by an air blowing mechanism having a plurality of fans which are independently rotated, thereby loosening the sheets. Prior to starting the feeding of the sheet, rotational speeds of the fans of the air blowing mechanism are controlled so as to be set to target rotational speeds which have been preset every plural fans so that a wind pressure which can loosen the sheets in the driving state of all fans is obtained.

Abstract: The present invention provides a sheet feeding apparatus and an image forming apparatus enabling high-accuracy and stable sheet overlapping conveyance regardless of the size, basis weight, and kind of sheets. Timing when a subsequent sheet Sb is adsorbed by an adsorbing and conveying mechanism 151 of a sheet feeding device 312 which adsorbs and conveys sheets blown up by air blowing is controlled, and the subsequent sheet Sb is conveyed while being overlapped partially at an overlapping amount with a preceding sheet Sa adsorbed by the adsorbing and conveying mechanism 151 earlier regardless of the size, basis weight, and kind of sheets.

Abstract: An upper air blowing portion that blows air from above a sheet held by a tray is provided above the portion between a trailing end restricting plate and an absorption conveyance portion. A controlling portion drives the upper air blowing portion so as to restrict the movement of the sheet in the direction reverse to the sheet feeding direction, when the sheet held on the tray moves in the direction reverse to the sheet feeding direction with the air blown by the air blowing portion.

Abstract: Provided are a high-quality sheet feeding apparatus which can detect multifeeding of sheets in a wide range of the sheet conveying direction and realize a stable conveying state, and an image forming apparatus therewith. A CPU controls a multifeeding detection sensor to detect multifeeding of sheets at a plurality of transmission points P1 to P5 of the multifeeding detection sensor. This CPU sets a plurality of transmission points across the front end and rear end of a sheet moving in the sheet conveying direction, based on size information of the sheet read from a storage portion and the timing of detection passing of the sheet in a horizontal path first sensor. This enables detection of multifeeding across the front end and rear end of a preceding sheet in the sheet conveying direction, and also enables detection of unseparated multifeeding that a subsequent sheet follows overlapping the preceding sheet.

Abstract: To provide a compound which has an anticoagulation action based upon inhibition of activated blood coagulation factor X and is useful as an anticoagulant or an agent for prevention and treatment of diseases caused by thrombus or embolus. A diazepan derivative such as 4-[(3-carbamimidoylphenylamino)methyl]-3-[4-(4-methyl-1,4-diazepan-1-yl)benzoylamino]benzoic acid and 3-hydroxy-4?-methoxy-2-{[4-(4-methyl-1,4-diazepan-1-yl)benzoyl]amino}benzanilide or a salt thereof is an effective ingredient.