Abstract: An optical scanning device includes a light emitter, a driver, and a signal outputter. The light emitter emits a laser beam. The driver operates, depending on a signal inputted thereto, in a master state in which the driver performs initialization by reading data from a storage device or in a slave state in which the driver drives the light emitter according to an operation mode corresponding to the signal. The signal outputter outputs the signal to the driver. For the initialization of the driver, the signal outputter outputs a signal for setting the driver to the slave state and setting the operation mode to a specific operation mode. The driver performs the initialization based on a beam intensity of the laser beam emitted from the light emitter driven according to the operation mode based on the signal outputted from the signal outputter.

Abstract: An image forming device includes an image data acquirer acquiring image data, a laser source emitting a laser beam, a laser driver forming an electrostatic latent image by irradiating a scanning surface of a charged photoconductor with the laser beam, based on the image data, a shading characteristic corrector correcting light quantity of the laser beam, an image former forming an image based on the electrostatic latent image, and a controller controlling the image data acquirer, the laser driver, the shading characteristic corrector, and the image former. The shading characteristic corrector includes a PDM signal outputter outputting a pulse density modulation signal based on the correction of the light quantity of the laser beam, a smoothing circuit smoothing the pulse density modulation signal to obtain an analog signal to be output, and a spread clock outputter outputting a clock subjected to spread spectrum to the PDM signal outputter.

Abstract: An optical scanning device includes: a light source; a light source driver that provides the light source with a drive current, on which a bias current that fluctuates according to temperature change is superimposed, for emitting light from the light source; and a bias current adjuster that provides the light source driver with a bias control signal for adjusting a magnitude of the bias current, wherein the bias current adjuster includes a current value adjusting member that is capable of changing the magnitude of the bias control signal according to temperature change, and wherein the bias control signal that has automatically changed according to temperature change of the current value adjusting member is provided to the light source driver, so that the light source driver makes the magnitude of the bias current to be superimposed fluctuate, based on the provided bias control signal.

Abstract: An optical scanning device includes a laser driver, an offset value determiner, a bias current setter, and a laser driver controller. The laser driver controls a laser light emitter to increase or decrease an excess of a current over a bias current in response to an input analog signal. The offset value determiner determines an offset value of the analog signal input to the laser driver based on a target light quantity of the laser light emitter. The bias current setter controls the bias current of the laser driver to a setting value in accordance with laser characteristics or lens transmittance of the laser light emitter. The laser driver controller controls a light emission quantity of the laser light emitter by inputting, to the laser driver, the analog signal offset based on a signal of the determined offset value.

Abstract: A light source according to the present invention is for an exposure device of a multifunction peripheral and includes a multi-beam light source. Two laser diodes included in the multi-beam light source are individually driven by a laser driver. Reference signals Vref1 and Vref2 used to control the light emitting power of the laser diodes are individually generated by two reference signal generation circuits. The reference signals Vref1 and Vref2 are each generated by processing including digital calculation, and at least one of the reference signals Vref1 and Vref2 includes a component for correcting the relative output difference of the laser diodes.

Abstract: An optical scanning device includes a laser light emitter in which an excess of a current over a bias current is increased or decreased in proportion to an analog signal input thereto, a laser driver to drive the laser light emitter, an optical scanner to scan a surface of an object with laser light emitted from the laser light emitter, an offset value determiner to determine an offset value of the analog signal input to the laser light emitter based on a target light quantity of the laser light emitter, and a laser driver controller to control a quantity of light emitted from the laser light emitter by inputting a signal on the basis of a signal of the determined offset value to the laser driver.

Abstract: An image forming device includes an image data acquirer acquiring image data, a laser source emitting a laser beam, a laser driver forming an electrostatic latent image by irradiating a scanning surface of a charged photoconductor with the laser beam, based on the image data, a shading characteristic corrector correcting light quantity of the laser beam, an image former forming an image based on the electrostatic latent image, and a controller controlling the image data acquirer, the laser driver, the shading characteristic corrector, and the image former. The shading characteristic corrector includes a PDM signal outputter outputting a pulse density modulation signal based on the correction of the light quantity of the laser beam, a smoothing circuit smoothing the pulse density modulation signal to obtain an analog signal to be output, and a spread clock outputter outputting a clock subjected to spread spectrum to the PDM signal outputter.

Abstract: A light source according to the present invention is for an exposure device of a multifunction peripheral and includes a multi-beam light source. Two laser diodes included in the multi-beam light source are individually driven by a laser driver. Reference signals Vref1 and Vref2 used to control the light emitting power of the laser diodes are individually generated by two reference signal generation circuits. The reference signals Vref1 and Vref2 are each generated by processing including digital calculation, and at least one of the reference signals Vref1 and Vref2 includes a component for correcting the relative output difference of the laser diodes.

Abstract: To provide a shading correction signal generation device including a correction amount setting signal generator that generates a correction amount setting signal, a modulator that modulates the correction amount setting signal by a predetermined modulation scheme and outputs the modulation signal, and a filter circuit that filters the modulation signal to generate a shading correction signal. During a transition period, the correction amount setting signal generator generates the correction amount setting signal in which a difference between a level at an end of a predetermined period and an average level during the transition period is larger than a difference between the level at the end of the predetermined period and a level at a start of a shading correction period.

Abstract: An optical scanning device includes: a light source; a light source driver that provides the light source with a drive current, on which a bias current that fluctuates according to temperature change is superimposed, for emitting light from the light source; and a bias current adjuster that provides the light source driver with a bias control signal for adjusting a magnitude of the bias current, wherein the bias current adjuster includes a current value adjusting member that is capable of changing the magnitude of the bias control signal according to temperature change, and wherein the bias control signal that has automatically changed according to temperature change of the current value adjusting member is provided to the light source driver, so that the light source driver makes the magnitude of the bias current to be superimposed fluctuate, based on the provided bias control signal.

Abstract: In order to estimate the degree of fatigue in a power transmission system and suitably manage a durability life, this durability life management device of the power transmission system is provided with: an input section which receives an input of vehicle running information including a torque generated by a driving source; a control section which controls the degree of damage to a component of the power transmission system on the basis of the running information and determines, on the basis of the degree of damage, whether the degree of fatigue in the power transmission system is high; and an output section which outputs a signal indicating that the degree of fatigue is high, when the degree of fatigue is determined to be high.

Abstract: To provide a shading correction signal generation device including a correction amount setting signal generator that generates a correction amount setting signal, a modulator that modulates the correction amount setting signal by a predetermined modulation scheme and outputs the modulation signal, and a filter circuit that filters the modulation signal to generate a shading correction signal. During a transition period, the correction amount setting signal generator generates the correction amount setting signal in which a difference between a level at an end of a predetermined period and an average level during the transition period is larger than a difference between the level at the end of the predetermined period and a level at a start of a shading correction period.

Abstract: In order to detect a passage timing of a light beam and to suppress cost, a light beam detection circuit (2) includes a detection signal generation section (34) configured to receive a light beam for scanning of a scanning target (101A) with one optical sensor (10), and generate a detection signal corresponding to an amount of received light; a reference signal output section (44) configured to output a reference signal that is in proportion to a light-amount control signal of a light-emission element (LD1) that emits the light beam; and a synchronizing signal generation section (35) configured to compare a detection signal generated by the detection signal generation section (34) with a reference signal output from the reference signal output section (44) to generate a synchronizing signal to determine a position to start scanning of the scanning target (101A) with the light beam.

Abstract: In order to detect a passage timing of a light beam and to suppress cost, a light beam detection circuit (2) includes a detection signal generation section (34) configured to receive a light beam for scanning of a scanning target (101A) with one optical sensor (10), and generate a detection signal corresponding to an amount of received light; a reference signal output section (44) configured to output a reference signal that is in proportion to a light-amount control signal of a light-emission element (LD1) that emits the light beam; and a synchronizing signal generation section (35) configured to compare a detection signal generated by the detection signal generation section (34) with a reference signal output from the reference signal output section (44) to generate a synchronizing signal to determine a position to start scanning of the scanning target (101A) with the light beam.

Abstract: The endoscope system of the present invention includes: an endoscope that has an image pickup device that picks up an observation image of a test object; an image display unit that converts image pickup signals that have been sent from the image pickup device into images and then displays these images; a first mounting portion that is provided in an operating section of the endoscope and on which the image display unit is mounted; and a second mounting portion that is provided in the operating section of the endoscope and on which the image display unit is mounted in a different position from that of the first mounting portion.

Abstract: A first resist roller (72) and a second resist roller (75) are disposed in a transport path of paper on an upstream side and a downstream side in the transport direction of the paper, and the rotational speeds of the first resist roller (72) and the second resist roller (75) are controlled so that the leading edge of the paper butts against and stops at the first resist roller (72) and the second resist roller (75), after which the paper is transported by the first and second resist rollers (72, 75) and the angled travel of the paper is corrected. An angled travel detection unit (81, 82) that detects angled travel in the paper is disposed upstream from the first resist roller (72) in the transport direction of the paper.

Abstract: An image forming apparatus has a speed range showing image forming capability per unit time that is determined in advance, and is settable to either a model set at a relatively low-speed range or a model set at a relatively high-speed range. Then, the arrangement of the laser elements is differentiated between a low-speed machine and a high-speed machine each other. Even when timing of writing for the high-speed machine is applied to the arrangement of the laser elements for the low-speed machine to write in an image, the image is not able to be written successfully, and resulting in an image which is displaced vertically.

Abstract: A first resist roller (72) and a second resist roller (75) are disposed in a transport path of paper on an upstream side and a downstream side in the transport direction of the paper, and the rotational speeds of the first resist roller (72) and the second resist roller (75) are controlled so that the leading edge of the paper butts against and stops at the first resist roller (72) and the second resist roller (75), after which the paper is transported by the first and second resist rollers (72, 75) and the angled travel of the paper is corrected. An angled travel detection unit (81, 82) that detects angled travel in the paper is disposed upstream from the first resist roller (72) in the transport direction of the paper.

Abstract: An image forming apparatus has a speed range showing image forming capability per unit time that is determined in advance, and is settable to either a model set at a relatively low-speed range or a model set at a relatively high-speed range. Then, the arrangement of the laser elements is differentiated between a low-speed machine and a high-speed machine each other. Even when timing of writing for the high-speed machine is applied to the arrangement of the laser elements for the low-speed machine to write in an image, the image is not able to be written successfully, and resulting in an image which is displaced vertically.

Abstract: An endoscope including a deflection section, an objective head, a deflection section cover and a sleeve. The deflection section comprises a flexible frame. The objective head is connected to a front end of the deflection section. The deflection section cover extends over the deflection section and extends over a portion of the objective head. The sleeve is located on an exterior side of the objective head and an exterior side of the deflection section cover at a joint between the objective head and the deflection section cover. The sleeve compresses the deflection section cover against the objective head. Another compression sleeve can be located on an exterior side of a shaft cover and the deflection section cover at a second joint, wherein the second sleeve compresses the shaft cover and the deflection section cover against a frame of a shaft of the endoscope.