Abstract: An engaging force of a pump impeller (1a) connected to an engine (21) and a turbine runner (1b) connected to an automatic transmission (23) is controlled by a controller (5). The controller (5) determines a target relative rotation speed of the pump impeller (1a) and the turbine runner (1b), and performs feedback control of the engaging force such that the difference between the target relative rotation speed and the real relative rotation speed is decreased. The controller (5) also performs feedforward control of the engaging force in a increasing direction. When the engine (21) is in a predetermined engine-stall prevention condition, the controller (5) prohibits the feedforward control so as to prevent an interference between feedback control and feedforward control.

Abstract: The present invention provides an image scanning apparatus 100 including a stand block 1 having a support arm 3, a scan type illumination device 5 for applying a slit-shaped light beam 8 onto a surface of a manuscript 2, and a manuscript image scanning device 4 mounted on the support arm 3 for receiving the slit-shaped light beam 8 reflected from the surface of the manuscript 2 and having a manuscript image. The scan type illumination device 5 applies the slit-shaped light beam 8 in a direction 11 vertical to the longitudinal direction of the slit-shaped light beam 8. The manuscript image scanning device includes a manuscript image input block 13 and a light detecting device 14 for receiving the reflected light 8′ output from the manuscript image input block 13. The manuscript image input block 13, in synchronization with the scan operation of the scan type illumination device 5, introduces the reflected light 8′ into a predetermined position of the light detecting device 14.

Abstract: A slip control system of a lockup torque converter includes a pre-compensator that pre-compensates for a target slip-rotation speed to produce a target slip-rotation speed correction value. A feedback compensator is provided to feedback-control an engagement capacity of a lock-up clutch based on a deviation between the target slip-rotation speed correction value and an actual slip-rotation speed to bring the actual slip-rotation speed closer to the target slip-rotation speed. Also provided is a dead-time processing section that compensates for the target slip-rotation speed correction value to reflect a dead time of dynamic characteristics peculiar to the slip control system in the target slip-rotation speed correction value. The dead-time compensated output is fed to the feedback compensator. The dead time is variable in accordance with a predetermined dead time characteristic.

Abstract: A controller (12) controls the engaging force of a lockup clutch (2c) connecting an engine (1) and an automatic transmission (3) via an engaging force regulating mechanism (11, 13). The controller (12) sets a target relative rotation speed (&ohgr;SLPT) according to a difference between a target engine rotation speed (TGT_EREV) and an input rotation speed (PriREV) of the automatic transmission (3). When an initial engine rotation speed (ST_EREV) is smaller than the target engine rotation speed (TGT_EREV), the controller (12) causes the target relative rotation speed (&ohgr;SLPT) to gradually vary from an initial relative rotation speed (ST13 SREV) to a predetermined target change-over relative rotation speed (CHG13 REV). By controlling the engaging force regulating mechanism (11, 13) on the basis of the target relative rotation speed (&ohgr;SLPT) set in this way, a prompt and appropriate lockup operation of the lockup clutch (2c) is realized in response to the vehicle conditions.

Abstract: A torque converter (1) comprises a pump impeller (1a) and turbine runner (1b) which transmit a torque via a fluid, and a lockup clutch (2) which engage the pump impeller (1a) and turbine runner (1b) according to an oil pressure. The pump impeller (1a) is connected to an engine (21), and the turbine runner (1b) is connected to an automatic transmission (23). An oil pressure control valve (3) supplies oil pressure to the lockup clutch (2) according to a signal from the controller (5). The controller (5) calculates a rotation speed increase rate of the turbine runner (1b) (S1), and controls the oil pressure of the oil pressure control valve (3) under a pressure increase rate which increases as the rotation speed increase rate (S10) increases, thereby preventing rotation speed fluctuations of the engine (23) accompanying lockup of the lockup clutch (2).

Abstract: There is disclosed an image input method, comprising the steps of: forming an image of a linear area on an original onto a row of linearly arranged light receiving elements of a linear image sensor by a lens, and outputting an image signal of the linear image formed on the light receiving elements from the linear image sensor. Moreover, the linear area formed into the image on the linear image sensor is moved by a sub-scanning mechanism to scan the entire image of the original. The linear image sensor further outputs a flicker detection signal having a voltage corresponding to a lighting light quantity radiating to the original. Assuming that a photoelectric conversion property of the linear image sensor is linear, a correcting section eliminates a voltage fluctuation of the image signal based on a fluctuation of the lighting light quantity based on the flicker detection signal.

Abstract: A pre-compensator equipped slip control system for a lock-up torque converter employing a lock-up clutch, includes a slip-rotation control section that begins to calculate a compensated target slip rotation from a time when an actual slip rotation between input and output elements of the torque converter becomes less than a predetermined slip-rotation threshold value after shifting from a torque-converter action area to a slip-control area, so that the actual slip rotation is brought closer to the compensated target slip rotation. Also provided is a feedforward control section that determines a lock-up clutch engagement pressure by way of feedforward control during a period of time from a time when the torque converter is shifted from the torque-converter action area to the slip-control area to the time when the actual slip rotation becomes less than the predetermined slip-rotation threshold value.

Abstract: A controller of a slip control system of a torque converter with a lock-up clutch is configured to carry out calculating a target slip rotation speed of the converter based on a vehicle speed and an open degree of a throttle valve; calculating a running condition of the vehicle, which includes drive and coast conditions, based on the operation condition of the throttle valve; calculating a torque converter characteristic with reference to a speed of a turbine of the converter and the running condition of the vehicle; calculating a target converter torque based on the torque converter characteristic; calculating a target lock-up clutch engaging torque based on the target converter torque and an engine torque; and outputting an instruction signal to an actuator to provide the lock-up clutch with the target lock-up clutch engaging torque. The torque converter characteristic is represented by two groups of maps, one being for the drive running condition and other being for the coast running condition.

Abstract: A roll paper cutter, for cutting roll paper which is fed out from a roll of paper so that it can be separated from an outer circumference of the roll of paper, comprises: a rail extending in the longitudinal direction of the rail perpendicular to the roll paper feeding direction; a stationary knife fixed at and supported by a carriage moving along the rail in the longitudinal direction of the rail; and a rotary knife pivotally supported by the carriage and rotated coming into contact with the stationary knife when the carriage is moved. When the carriage is moved in the longitudinal direction of the rail, a cutting edge intersection formed by the rotary knife, which is rotated by the movement of the carriage, and also formed by the stationary knife crosses and cuts the roll paper in the width direction.

Abstract: In a stand type image scanner, an exclusive light source portion is used in irradiation in which the light intensity in a specific wavelength band W within a wavelength band W0 in which the reflectivity of a portion to be dropped out on the original is higher than that in the other wavelength band, and a scanning portion performs binary processing of regarding as white color a portion of the original at which the detection value of reflected light intensity is higher than a reference value while regarding as black color a portion of the original at which the detection value of the reflected light intensity is smaller than the reference value.

Abstract: A controller of a slip control system of a torque converter with a lock-up clutch is configured to carry out calculating a target slip rotation speed of the converter based on a vehicle speed and an open degree of a throttle valve; calculating a running condition of the vehicle, which includes drive and coast conditions, based on the operation condition of the throttle valve; calculating a torque converter characteristic with reference to a speed of a turbine of the converter and the running condition of the vehicle; calculating a target converter torque based on the torque converter characteristic; calculating a target lock-up clutch engaging torque based on the target converter torque and an engine torque; and outputting an instruction signal to an actuator to provide the lock-up clutch with the target lock-up clutch engaging torque. The torque converter characteristic is represented by two groups of maps, one being for the drive running condition and other being for the coast running condition.

Abstract: A pre-compensator equipped slip control system for a lock-up torque converter employing a lock-up clutch, includes a slip-rotation control section that begins to calculate a compensated target slip rotation from a time when an actual slip rotation between input and output elements of the torque converter becomes less than a predetermined slip-rotation threshold value after shifting from a torque-converter action area to a slip-control area, so that the actual slip rotation is brought closer to the compensated target slip rotation. Also provided is a feedforward control section that determines a lock-up clutch engagement pressure by way of feedforward control during a period of time from a time when the torque converter is shifted from the torque-converter action area to the slip-control area to the time when the actual slip rotation becomes less than the predetermined slip-rotation threshold value.

Abstract: An image read apparatus which is capable of implementing two-dimensional image reading with high resolution and high picture quality by using a linear image sensor. A vertical scanning mechanism inputs light imaged by a lens from a required sub-image of the read manuscript to a linear image sensor successively, before a sample and hold circuit samples part of an image signal outputted from the linear image sensor. An amplification factor control circuit changes an amplification factor which amplifies or attenuates the image signal in answer to a negative feedback input signal outputted from the sample and hold circuit. The change of the amplification factor causes the light component of the two-dimensional image signal other than the image to be removed due to a change of the amplification factor to be read. Thus, the sampled part of the image signal from the linear image sensor causes the amplification factor of the image signal to be subjected to the negative feedback.

Abstract: There is provided an image scanner including (a) an image sensor, (b) a lens for focusing images onto the image sensor, (c) a reflecting mirror for directing images of an object to the image sensor through the lens, and (d) a driver for rotating the reflecting mirror. The reflecting mirror has a first width located closer to the lens and a second width located remoter from the lens than the first width, both of the first and second widths extending in parallel with the image sensor. The first width is designed to be smaller than the second width. The reflecting mirror is preferably trapezoidal. The driver is within a difference between the first and second widths so that the driver does not exist beyond the second width of the reflecting mirror. Since the driver is arranged not to exist beyond a width of the reflecting mirror, it is possible to make the image sensor smaller in a size as a whole.

Abstract: An image scanner of the present invention includes an angle sensor for controlling subscanning and implemented by a position sensitive light detector (PSD). The angle sensor allows a subscanning mirror to be rotated at high speed without any vibration. A slit plate for causing a restricted part of light issuing from a light emitting element to be incident to the PSD is so configured as to cover the light emitting element, thereby reducing the size of the image scanner.

Abstract: Disclosed is an image scanner, which has: a reflecting mirror for reflecting a light reflected from a scanned manuscript in a predetermined direction; a sub-scanning means for sequential sub-scanning which parallel moves on a plane which has an acute angle to the surface of the scanned manuscript while keeping the reflecting surface of the reflecting mirror perpendicular to the surface of the scanned manuscript; a focusing lens which focuses the light reflected from the scanned manuscript which is reflected by the reflecting mirror; and an one-dimensional image sensor which outputs a manuscript image by conducting a photoelectric conversion of the light reflected by the reflecting mirror which is focused on a light-receiving surface of the one-dimensional image sensor by the focusing lens.

Abstract: In an image scanner, a controller is responsive to a start command for line-scanning a document to produce a line-scan signal and providing a display of the line-scan signal on a viewing screen. While this sequence proceeds from a start position towards the end of a full scan, the user is allowed to reposition the document by viewing the screen if its orientation needs correction. The process continues until a stop command is produced or until the line-scan reaches the end of the full scan area, whichever is earlier. In response to the stop command, the controller restarts the line-scanning and display sequence from the start position to provide a full-scan of the material.

Abstract: In a scanner unit for An overhead image scanner, a rotatably mounted mirror reflects light from a surface to be scanned off to a focusing lens to form an optical image of a scanned line on a linear image sensor. An extension arm is connected to the minor for rotation therewith. To one end of the arm is attached an electromagnetic drive system and to the other end a light reflecting member which is formed with a multiplicity of microscopically spaced apart tracks running parallel to the length of the extension arm. A laser beam spot is formed on the reflecting member and a photodiode array detects reflections therefrom to produce a plurality of output signals representative of the amounts of reflections incident on different areas of the array.