Abstract: Provided is a sheet processing apparatus, including: a placement portion to which a sheet conveyed by a conveyance portion in a conveyance direction is placed; a processing portion configured to perform predetermined processing on a sheet placed on the placement portion, and to be movable in a predetermined moving range; and a control portion configured to control the processing portion to position, at a timing at which a sheet conveyed by the conveyance portion passes through the moving range, from a first position of preventing from interfering with the sheet to a second position of performing the predetermined processing on a preceding sheet having been conveyed by the conveyance portion and placed on the placement portion before the sheet.

Abstract: A sheet stacking apparatus including a control portion is configured to execute: a first mode in which the control portion causes a bundle forming portion to form a bundle of sheets including a sheet supported by a first placement portion and a sheet placed on a second placement portion; and a second mode in which a downstream end portion of a bundle of sheets formed in the second mode is positioned upstream of a downstream end portion of a bundle of sheets to be formed in the first mode, and wherein the control portion sets a maximum number of sheets constituting a bundle of sheets which the control portion causes the bundle forming portion to form in the second mode to be smaller than a maximum number of sheets constituting a bundle of sheets which the control portion causes the bundle forming portion to form in the first mode.

Abstract: In an air-cooled heat exchanger system, the stress in the pipe connecting the upstream main pipe of the upstream manifold and each heat exchanger is minimized by using a simple structure. The air-cooled heat exchanger system (1) comprises an upstream manifold (6) including a plurality of upstream branch pipes (18) extending therefrom, a heat exchanger (4) connected to the downstream end of each branch pipe, and including an inlet header (31) placed on a base frame in a moveable manner, an outlet header and a plurality of heat transfer tubes (34) connecting the two headers, and a connecting member (41, 75) connecting each adjacent pair of the inlet headers.

Abstract: A sheet stacking apparatus includes a movable stack portion on which sheets are to be stacked; a detection portion configured to detect whether or not a topmost sheet of sheets stacked on the stack portion is positioned at a predetermined position; and a control portion configured to position the topmost sheet at the predetermined position based on a detection result of the detection portion. In a case where the control portion moves the stack portion at a first speed so that a topmost sheet on the stack portion deviates from the predetermined position, the control portion moves the stack portion at a second speed lower than the first speed to position the topmost sheet at the predetermined position.

Abstract: A switching power supply device that switches setting of an output voltage based on an external signal according to one or more embodiments includes: a transformer including a primary winding and n secondary windings; n synchronous rectification elements provided, corresponding to the n secondary windings; and n?1 switch elements that switch the secondary windings. Each of the n?1 switch elements is kept on or off according to a high or low voltage value out of set voltages of the output voltage, and all or any of the n synchronous rectification elements are selected to synchronously rectify pulse voltage of the secondary windings, and when operation with a high set value of the output voltage stops, a synchronous rectification element used to output the high set value performs switching operation until the output voltage goes down to the low voltage value of the set voltages of the output voltage.

Abstract: A switching power supply device that switches setting of an output voltage based on an external signal according to one or more embodiments includes: a transformer including a primary winding and n secondary windings; n synchronous rectification elements provided, corresponding to the n secondary windings; and n?1 switch elements that switch the secondary windings. Each of the n?1 switch elements is kept on or off according to a high or low voltage value out of set voltages of the output voltage, and all or any of the n synchronous rectification elements are selected to synchronously rectify pulse voltage of the secondary windings, and when operation with a high set value of the output voltage stops, a synchronous rectification element used to output the high set value performs switching operation until the output voltage goes down to the low voltage value of the set voltages of the output voltage.

Abstract: A sheet stacking apparatus including a control portion is configured to execute: a first mode in which the control portion causes a bundle forming portion to form a bundle of sheets including a sheet supported by a first placement portion and a sheet placed on a second placement portion; and a second mode in which a downstream end portion of a bundle of sheets formed in the second mode is positioned upstream of a downstream end portion of a bundle of sheets to be formed in the first mode, and wherein the control portion sets a maximum number of sheets constituting a bundle of sheets which the control portion causes the bundle forming portion to form in the second mode to be smaller than a maximum number of sheets constituting a bundle of sheets which the control portion causes the bundle forming portion to form in the first mode.

Abstract: Provided is a sheet processing apparatus, including: a placement portion to which a sheet conveyed by a conveyance portion in a conveyance direction is placed; a processing portion configured to perform predetermined processing on a sheet placed on the placement portion, and to be movable in a predetermined moving range; and a control portion configured to control the processing portion to position, at a timing at which a sheet conveyed by the conveyance portion passes through the moving range, from a first position of preventing from interfering with the sheet to a second position of performing the predetermined processing on a preceding sheet having been conveyed by the conveyance portion and placed on the placement portion before the sheet.

Abstract: A sheet stacking apparatus, including: a movable stack portion on which sheets are to be stacked; a detection portion configured to detect whether or not a topmost sheet of sheets stacked on the stack portion is positioned at a predetermined position; and a control portion configured to position the topmost sheet at the predetermined position based on a detection result of the detection portion, wherein in a case where the control portion moves the stack portion at a first speed so that a topmost sheet on the stack portion deviates from the predetermined position, the control portion moves the stack portion at a second speed lower than the first speed to position the topmost sheet at the predetermined position.

Abstract: A switching power-supply device comprises: a transformer; a switching element connected in series with a primary coil; an output voltage generation circuit to generate an output voltage from a voltage generated in a secondary coil; a control circuit power-supply-voltage generation circuit to generate a power-supply voltage from a voltage generated in an auxiliary coil; a feedback control circuit to control an ON width of the switching element by using the voltage generated in the auxiliary coil; a voltage reduction detection circuit to output a pulse signal to the secondary coil when a reduction of the output voltage is detected; a voltage-reduction-signal detection circuit to detect the voltage reduction signal transmitted to the primary coil from the secondary coil; and a trigger circuit to output a trigger signal to turn on the switching element when the voltage reduction signal is detected by the voltage-reduction-signal detection circuit.

Abstract: In an air-cooled heat exchanger system, the stress in the pipe connecting the upstream main pipe of the upstream manifold and each heat exchanger is minimized by using a simple structure. The air-cooled heat exchanger system (1) comprises an upstream manifold (6) including a plurality of upstream branch pipes (18) extending therefrom, a heat exchanger (4) connected to the downstream end of each branch pipe, and including an inlet header (31) placed on a base frame in a moveable manner, an outlet header and a plurality of heat transfer tubes (34) connecting the two headers, and a connecting member (41, 75) connecting each adjacent pair of the inlet headers.

Abstract: A switching power supply is provided to supply an AC input voltage. The supply includes a control circuit configured to detect a voltage of the AC power source in a voltage waveform, and switch elements in a synchronous rectification switching mode in synchronization with polarities of the voltage waveform when the AC input voltage is equal to or greater than a predetermined voltage value. The control unit also operates the switching without synchronization with the polarities when the AC input voltage is smaller than the predetermined voltage value.

Abstract: A switching power supply is provided to supply an AC input voltage. The supply includes a control circuit configured to detect a voltage of the AC power source in a voltage waveform, and switch elements in a synchronous rectification switching mode in synchronization with polarities of the voltage waveform when the AC input voltage is equal to or greater than a predetermined voltage value. The control unit also operates the switching without synchronization with the polarities when the AC input voltage is smaller than the predetermined voltage value.

Abstract: A switching power-supply device comprises: a transformer; a switching element connected in series with a primary coil; an output voltage generation circuit to generate an output voltage from a voltage generated in a secondary coil; a control circuit power-supply-voltage generation circuit to generate a power-supply voltage from a voltage generated in an auxiliary coil; a feedback control circuit to control an ON width of the switching element by using the voltage generated in the auxiliary coil; a voltage reduction detection circuit to output a pulse signal to the secondary coil when a reduction of the output voltage is detected; a voltage-reduction-signal detection circuit to detect the voltage reduction signal transmitted to the primary coil from the secondary coil; and a trigger circuit to output a trigger signal to turn on the switching element when the voltage reduction signal is detected by the voltage-reduction-signal detection circuit.

Abstract: A switching power supply is provided to supply an AC input voltage. The supply includes a control circuit configured to detect a voltage of the AC power source in a voltage waveform, and switch elements in a synchronous rectification switching mode in synchronization with polarities of the voltage waveform when the AC input voltage is equal to or greater than a predetermined voltage value. The control unit also operates the switching without synchronization with the polarities when the AC input voltage is smaller than the predetermined voltage value.

Abstract: A method is proposed for manufacturing a pipe-lining material comprising a tubular resin absorbent material covered with a tube comprised of an airtight plastic film. The tubular resin absorbent material is inserted into the tube, expanded in a columnar shape, and brought into close contact with the internal peripheral surface of the tube. A heater is wound in close contact with the external peripheral surface of the tube thus expanded. The tube and the tubular resin absorbent material are heated by energizing the heater, and the tube is thereby heat-fused to the tubular resin absorbent material. With such a method, a mechanism for moving the tube and the tubular resin absorbent material is not required. In addition, since heat non-uniformities are not generated, the tube can be uniformly heat-fused to the tubular resin absorbent material, thereby enabling a high-quality pipe-lining material to be manufactured.

Abstract: A main pipe is lined using a pipe lining material that blocks the opening of a lateral pipe branching from the main pipe. An in-pipe work robot is provided with a cutting nozzle for spraying a pressurized fluid material or pressurized granular material onto the pipe lining material of the main pipe. The cutting nozzle is moved to a predetermined position inside the main pipe and rotated about a vertical axis by a rotary mechanism to cut the lining material between the first and second pipes by the pressurized fluid material or pressurized granular material sprayed from the cutting nozzle in order to form an opening for communicating the main pipe with the lateral pipe. The cutting nozzle can be moved in desired positions to drill holes accurately without damaging the internal peripheral surface of the lateral pipe.

Abstract: A gate drive circuit including dead time control circuits delaying on periods of switching elements S1, S2 based on a control signal; driving circuits; and monitor circuits. Each of the monitor circuits includes a current source and an N-type FET in which the source is connected to the gate of one of the switching elements; the drain is connected to the current source; and a predetermined voltage is applied to the gate. When an off state of one of the switching elements is detected, the N-type FET Qn outputs an off signal to the dead time control circuit on the other switching element side. Based on the off signal, the dead time control circuit on the other switching element side terminates an operation of delaying the on period of the other switching element.

Abstract: The present invention provides a retainer for a pipe connecting device, capable of being disengaged from a pipe without using any special disconnecting tool when disconnecting the pipe from the connector housing, and of remaining on a connector housing without being separated together with the pipe from the connector housing when the pipe is disconnected from the connector. A retainer (17) of an elastic material is interposed between a pipe (14) and a connector housing (15) in a known manner. When the pipe connecting device is in a connecting state, first catching edges (26a) of a pair of flexible catching parts (26) formed in a middle part of the retainer (17) are in engagement with a stopping protrusion (18) formed on the pipe (14), second catching parts (26b) lie in openings (20) formed in the connector housing (15) and are in engagement with support bars (19). Parts near the pair of second catching edges (26b) are connected integrally by fixed walls (28) serving as a spacing means.

Abstract: The use of isoquinoline derivatives for the treatment of glaucoma or ocular hypertension. The isoquinoline derivatives are of formula I ##STR1## wherein R.sub.1 is a hydrogen atom or a C.sub.1 -C.sub.6 alkyl group and R.sub.2 is a C.sub.1 -C.sub.6 alkyl group. The stability of the isoquinoline derivatives when used in the form of a solution is improved by incorporating therein compounds having a phenolic hydroxyl group and/or glycols serving as a stabilizer.