Abstract: A flexible and extensible architecture allows for secure searching across an enterprise. Such an architecture can provide a simple Internet-like search experience to users searching secure content inside (and outside) the enterprise. The architecture allows for the crawling and searching of a variety or of sources across an enterprise, regardless of whether any of these sources conform to a conventional user role model. The architecture further allows for security attributes to be submitted at query time, for example, in order to provide real-time secure access to enterprise resources. The user query also can be transformed to provide for dynamic querying that provides for a more current result list than can be obtained for static queries.

Abstract: A flexible and extensible architecture allows for secure searching across an enterprise. Such an architecture can provide a simple Internet-like search experience to users searching secure content inside (and outside) the enterprise. The architecture allows for the crawling and searching of a variety or sources across an enterprise, regardless of whether any of these sources conform to a conventional user role model. The architecture further allows for security attributes to be submitted at query time, for example, in order to provide real-time secure access to enterprise resources. The user query also can be transformed to provide for dynamic querying that provides for a more current result list than can be obtained for static queries.

Abstract: A flexible and extensible architecture allows for secure searching across an enterprise. Such an architecture can provide a simple Internet-like search experience to users searching secure content inside (and outside) the enterprise. The architecture allows for the crawling and searching of a variety of sources across an enterprise, regardless of whether any of these sources conform to a conventional user role model. The architecture further allows for security attributes to be submitted at query time, for example, in order to provide real-time secure access to enterprise resources. The user query also can be transformed to provide for dynamic querying that provides for a more current result list than can be obtained for static queries.

Abstract: An impulse response measurement with high precision is made possible with a simple device or signal processing, even if sampling clocks on the transmitting side and the receiving side are asynchronous at the time of measuring an impulse response of a measured system. An impulse response measuring method includes an input signal generating step of generating an input signal of an arbitrary waveform to be input to a measured system by using a synchronization signal having a first sampling clock frequency, a signal converting step of performing conversion on a measured signal output from the measured system into a discrete value system by using a synchronization signal having a second sampling clock frequency, and an inverse filter correcting step of correcting at least a phase of an inverse filter which is an inverse function of a function showing a frequency characteristic of the input signal according to a frequency ratio of the first sampling clock frequency and the second sampling clock frequency.

Abstract: A belt drive controller for controlling each belt stopping position with high accuracy during intermittent movement of a belt. This belt drive controller controls driving of a belt to intermittently move a belt wrapped around a plurality of supporting rollers including a driven roller and a drive roller. This controller detects a rotation angular displacement or a rotation angular velocity of two supporting rollers having mutually different diameters, and controls driving of the drive roller based on the detected rotation data so that the position of the belt in the direction of movement becomes a predetermined target position.

Abstract: An end plate is joined to a fuel cell stack. A first piping unit and a second piping unit are attached to the end plate. The first piping unit has a first attachment base, to which a fuel gas supply pipe, a first oxidation off-gas discharge pipe, and a coolant discharge pipe are coupled. The second piping unit has a second attachment base, to which an oxidation gas supply pipe, a coolant supply pipe, and a discharge pipe are coupled. The discharge pipe is joined to a discharge cylinder coupled to the first oxidation off-gas discharge pipe. The oxidation gas supply pipe and the coolant supply pipe are integrated with each other. Also, the first oxidation off-gas discharge pipe and the coolant discharge pipe are integrated with each other.

Abstract: A device of a motor with a rotation control means that decreases the fluctuation of its rotation period. The control is carried out based on the amplitude and the phase generated by amplitude-and-phase generating devices, detecting passage time of detected portions (13) in different zones. And a color image forming apparatus of tandem type with such motors.

Abstract: An imprinting unit is disclosed where a driving current provided to a driving motor is temporarily increased from normal operations in sync with a shock generated when a recording medium enters and leaves a nip.

Abstract: A belt drive controlling device for controlling drive of an endless belt supported and driven by plural support rollers including a driving roller configured to drive the endless belt to rotate; and a driven roller which is rotated by the endless belt. The device performs arithmetic processing to extract one of two pieces of rotation variation information on two rollers of the support rollers, and perform controlling drive of the belt on the basis of the rotation variation information. A belt device including a belt, plural support rollers, a driving source, the belt drive controlling device, and a detector configured to detect rotation angular displacement or rotation angular velocity of two of the support rollers. An image forming apparatus including an image bearing member, a developing device and a transfer device, wherein the image bearing member and/or the transfer device includes the belt device.

Abstract: An image fixing apparatus controls temperature of a rotating member for fixing with compensation for delay by using a Smith predictor with a controlled object model to reduce temperature ripple effectively. In one example, the image fixing apparatus includes a pair of rotating members to form a nip portion, a heater to heat the rotating member, a temperature sensor to detect temperature of the rotating member, a calculator to calculate a heat value to attain a target temperature of the rotating member, a controller to control the heater based on a calculation result of the heat value with compensation for delay using a model according to the calculation result, and a selector to select a control in which an output of the compensation is input into the calculator or a control in which the output of the compensation is not input into the calculator.

Abstract: A fixing device includes a pair of rotating members, a heater, a detector, a calculator, a pulse width modulation circuit, and a controller. In at least one embodiment, the pair of rotating members is configured to fix a toner image on a recording medium. The heater is configured to heat at least one of the pair of rotating members to a process temperature when driven with an alternating current. The detector is configured to detect the process temperature. The calculator is configured to calculate an amount of heat to adjust the process temperature to a reference temperature. The pulse width modulation circuit is configured to generate a drive signal having a pulse width modulation cycle divided into first and second off times and an on time inserted therebetween. The controller is configured to control operation of the heater according to the drive signal.

Abstract: A belt driving controller is disclosed. The belt driving controller executes driving control of a belt that is wound around plural sustaining rollers by controlling a driving sustaining roller that transmits driving force to the belt. The belt driving controller executes the driving control of the belt by controlling the driving sustaining roller so that a moving velocity fluctuation of the belt caused by a PLD (pitch line distance) fluctuation in the belt circumference direction becomes small, based on rotation information of rotation angle displacement or rotation angle velocities of two sustaining rollers in the plural sustaining rollers, in which two sustaining rollers, the diameters thereof are different from each other and/or the degrees to which the PLDs of parts of the belt which wind around the two sustaining rollers influence the belt moving velocity and the rotation angle velocities of the two sustaining rollers are different from each other.

Abstract: An image forming apparatus includes a latent image carrier having a moving surface on which a latent image is formed, a drive control mechanism to control a drive of the latent image carrier so as to match a rotation angular speed of the latent image carrier with a target rotation angular speed thereof, a surface moving member having a moving surface on which an adjustment pattern for use in controlling the drive of the latent image carrier is formed, an image forming mechanism to develop the latent image with toner and transfer a resultant toner image on the surface moving member so as to form the adjustment pattern along a surface moving direction thereof, a pattern sensor to detect the adjustment pattern, a correction mechanism to correct the target rotation angular speed of the latent image carrier based on an amplitude and a phase of a variable component in a pattern interval of the adjustment pattern detected with the pattern sensor.

Abstract: A drive control device for a brushless motor having a rotor and a plurality of coils with different phases can be included in an image reading apparatus or an image forming apparatus. The drive control device may include a detection target configured to rotate in synchronization with rotation of the rotor and having formed thereon a pattern representing modulation information, a detector configured to read the pattern and to output modulated output signals, a demodulator configured to demodulate the modulated output signals and to obtain demodulated information, and a controller configured to control rotation of the rotor on the basis of at least the demodulated information obtained by the demodulator.

Abstract: A fixing apparatus and an image formation apparatus are disclosed. The fixing apparatus includes two or more heaters with temperature detecting function that generate heat with electric current and detect temperature; a heating unit that includes the heater with the temperature detecting function; a film, a surface of which slides on the heating unit; a thermal fixing unit that is heated by the heating unit through the film for fusing a toner image that is yet-to-be fixed on a recording paper at a predetermined fixing temperature; a pressurization roller for pressing the recording paper to the thermal fixing unit; and a temperature control unit for controlling the temperature of the heater to be a predetermined temperature based on the temperature of the heater detected by the heater with the temperature detecting function.

Abstract: A belt drive controlling device for controlling drive of an endless belt supported and driven by plural support rollers including a driving roller configured to drive the endless belt to rotate; and a driven roller which is rotated by the endless belt. The device performs arithmetic processing to extract one of two pieces of rotation variation information on two rollers of the support rollers, and perform controlling drive of the belt on the basis of the rotation variation information. A belt device including a belt, plural support rollers, a driving source, the belt drive controlling device, and a detector configured to detect rotation angular displacement or rotation angular velocity of two of the support rollers. An image forming apparatus including an image bearing member, a developing device and a transfer device, wherein the image bearing member and/or the transfer device includes the belt device.

Abstract: A device of a motor with a rotation control means that decreases the fluctuation of its rotation period. The control is carried out based on the amplitude and the phase generated by amplitude-and-phase generating devices, detecting passage time of detected portions (13) in different zones. And a color image forming apparatus of tandem type with such motors.

Abstract: A fixing apparatus and an image formation apparatus are disclosed. The fixing apparatus includes two or more heaters with temperature detecting function that generate heat with electric current and detect temperature; a heating unit that includes the heater with the temperature detecting function; a film, a surface of which slides on the heating unit; a thermal fixing unit that is heated by the heating unit through the film for fusing a toner image that is yet-to-be fixed on a recording paper at a predetermined fixing temperature; a pressurization roller for pressing the recording paper to the thermal fixing unit; and a temperature control unit for controlling the temperature of the heater to be a predetermined temperature based on the temperature of the heater detected by the heater with the temperature detecting function.

Abstract: A rotational speed of a first roller and a time required for a second roller to make one rotation are measured. A controller calculates an amplitude and a phase of fluctuation in a rotational speed in one rotation period of the first roller while the first roller is rotated by a predefined angle based on the speed and the time. The controller corrects measured speed of the first roller based on the amplitude and the phase, and controls a driving roller based on corrected speed.

Abstract: A fixing device includes a pair of rotating members, a heater, a detector, a calculator, a pulse width modulation circuit, and a controller. In at least one embodiment, the pair of rotating members is configured to fix a toner image on a recording medium. The heater is configured to heat at least one of the pair of rotating members to a process temperature when driven with an alternating current. The detector is configured to detect the process temperature. The calculator is configured to calculate an amount of heat to adjust the process temperature to a reference temperature. The pulse width modulation circuit is configured to generate a drive signal having a pulse width modulation cycle divided into first and second off times and an on time inserted therebetween. The controller is configured to control operation of the heater according to the drive signal.