Abstract: A liquid discharge head attachment device includes a liquid discharge head including a plurality of nozzles that discharges liquid. The liquid discharge head has a nozzle face mounting the nozzles and a side face being perpendicular to the nozzle face. An attachment member is attached with the liquid discharge head. A position adjuster contacts the side face of the liquid discharge head and adjusts a position of the liquid discharge head with respect to the attachment member. The position adjuster is disposed outboard from the nozzles of the liquid discharge head. The position adjuster overlaps the liquid discharge head in an orthogonal direction perpendicular to the nozzle face of the liquid discharge head in at least a part of the position adjuster.

Abstract: A liquid discharging device includes: a recording head that has nozzles discharging liquid, and forms an image on a target surface with the liquid while performing scanning of the target surface for multiple times; a moving unit that moves the recording head in main-scanning direction while making the head discharge liquid, and moves the head in sub-scanning direction after the head has discharged liquid; a drive waveform applying unit that applies a drive waveform to the respective nozzles; a temperature detecting unit that detects temperature about the head; a correcting unit that corrects drive waveform based on detected temperature; and a control unit that, when temperature about the head changes from first temperature to second temperature, performs control in such a way that, during the multiple scans, use of second-type drive waveform corresponding to the second temperature gradually increases against use of first-type drive waveform corresponding to the first temperature.

Abstract: A liquid discharging device includes: a recording head that has nozzles discharging liquid, and forms an image on a target surface with the liquid while performing scanning of the target surface for multiple times; a moving unit that moves the recording head in main-scanning direction while making the head discharge liquid, and moves the head in sub-scanning direction after the head has discharged liquid; a drive waveform applying unit that applies a drive waveform to the respective nozzles; a temperature detecting unit that detects temperature about the head; a correcting unit that corrects drive waveform based on detected temperature; and a control unit that, when temperature about the head changes from first temperature to second temperature, performs control in such a way that, during the multiple scans, use of second-type drive waveform corresponding to the second temperature gradually increases against use of first-type drive waveform corresponding to the first temperature.

Abstract: In a high-frequency module, an input terminal, an output terminal and a ground terminal, which are arranged so as to be capable of being visually checked, and wiring line electrodes located on a mounting surface are electrically connected to each other by wires and therefore the connection state of a non-reciprocal circuit element to the wiring line electrodes on the mounting surface of the substrate can be easily visually checked and an impedance adjustment between the non-reciprocal circuit element and the wiring line electrodes located on the mounting surface of the substrate on which the non-reciprocal circuit element is mounted or electronic components mounted on the mounting surface can be easily performed by adjusting the lengths of the wires.

Abstract: In a high-frequency module, an input terminal, an output terminal and a ground terminal, which are arranged so as to be capable of being visually checked, and wiring line electrodes located on a mounting surface are electrically connected to each other by wires and therefore the connection state of a non-reciprocal circuit element to the wiring line electrodes on the mounting surface of the substrate can be easily visually checked and an impedance adjustment between the non-reciprocal circuit element and the wiring line electrodes located on the mounting surface of the substrate on which the non-reciprocal circuit element is mounted or electronic components mounted on the mounting surface can be easily performed by adjusting the lengths of the wires.

Abstract: In a circuit module in which a plurality of non-reciprocal circuit elements, each of which does not have a yoke, are mounted, the occurrence of magnetic coupling between the non-reciprocal circuit elements is significantly reduced and prevented. Core isolators are not arranged such that, in a state in which the direction of magnetic flux and the direction of magnetic flux are the same, the core isolators are aligned in the direction of the magnetic flux. Specifically, the core isolators generate the magnetic flux from left to right. The core isolators are aligned so as to be inclined relative to the magnetic flux. Thus, extension of the magnetic flux through the core isolator in a state of being directed in the same direction as that of the magnetic flux is significantly reduced and prevented.

Abstract: In a circuit module in which a plurality of non-reciprocal circuit elements, each of which does not have a yoke, are mounted, the occurrence of magnetic coupling between the non-reciprocal circuit elements is significantly reduced and prevented. Core isolators are not arranged such that, in a state in which the direction of magnetic flux and the direction of magnetic flux are the same, the core isolators are aligned in the direction of the magnetic flux. Specifically, the core isolators generate the magnetic flux from left to right. The core isolators are aligned so as to be inclined relative to the magnetic flux. Thus, extension of the magnetic flux through the core isolator in a state of being directed in the same direction as that of the magnetic flux is significantly reduced and prevented.

Abstract: A position control method is disclosed that is capable of precisely and stably controlling a position of an object lens relative to a recording medium. When controlling the position of the object lens in the tracking direction, first, an attempt is made to read address information recorded on the recording medium, and if the address information is not readable, the polarity of the tracking error signal used for servo control is reversed. As a result, even for a recording medium of a low quality or a nonstandard recording medium, which are treated as invalid media in the related art, it is possible to locate the object lens to the target position.

Abstract: A system, method, computer program and apparatus for providing regulating signals for regulating the position of an objective lens relative to a track on a disk. The regulating signals are obtained in response to an access request specifying an access target region on the disk. The tracks of a disc are divided into a plurality of zones, each zone having associated signal regulation information. In response to an access request, the signal regulation information for the zone containing the access target region is used to regulate the position of the objective lens.

Abstract: A write power control method of controlling a recording pulse of a laser diode. The method including the steps of: setting, to a target value, a measured value corresponding to an optimum write power determined in an optimum write power determining process performed before recording information; comparing the target value with an output level measured in power control; and controlling an erase power to approach the target value based on a result of the comparison. The recording pulse is a multi-pulse defined by a peak power, the erase power, and a bottom power; and the erase power, at a time when the multi-pulse is not being output, is used in the step of controlling the erase power.

Abstract: An optical disk recording method comprising steps of a) performing recording onto the optical disk with a ZCLV method by using zone parameter storage means for storing at least one zone division time and CLV of each zone in a track formed on the optical disk, as zone parameters, for each of a plurality of recording modes and optical disk type determination means for determining the type of the optical disk before recording; b) performing optimization of the recording velocity by detecting, before recording, servo signal fluctuation by accessing the optical disk, by determining maximum recording velocity defined by the speed of a rotational motor rotating the optical disk, and by calculating a changing point of the recording velocity; and c) limiting the speed of the rotational motor, when the servo signal fluctuation at the surface of the optical disk exceeds a reference level and determining the relation between the zone division time and the CLV of each zone.

Abstract: A tilt control method controls an inclination of an objective lens to an optical disk in which a track in the shape of a spiral or a concentric circle is formed. The tilt control method comprising steps of recording data to the optical disk, and acquiring, when recording the data to the optical disk, tilt control information for controlling the inclination of the objective lens based on both known compensation information that is defined with a plurality of kinds of signals acquired when reproducing data from a recorded region of the optical disk, and information that is related to an inclination of the objective lens when an amplitude of a tracking error signal is substantially a maximum in a recording region of the optical disk where the data are recorded.

Abstract: An optical disc system with improved signal regulation capabilities and a method for implementing several improvements in the capabilities are disclosed, in that the signals containing information regarding the position of an objective lens in the tracking direction can be acquired accurately and the access to optical discs can be carried out. In the method for acquiring with high precision the signals containing information on the position of the objective lens in the tracking direction, these signals are regulated in response to an access request specifying an access target region on the optical recording disc provided thereon with tracks in the shape of spiral or concentric circle, corresponding to a zone to be regulated including the access target region to be regulated out of a plurality of regulating zones formed by dividing a plurality of the tracks utilizing regulation information acquired previously.

Abstract: A position control method is disclosed that is capable of precisely and stably controlling a position of an object lens relative to a recording medium. When controlling the position of the object lens in the tracking direction, first, an attempt is made to read address information recorded on the recording medium, and if the address information is not readable, the polarity of the tracking error signal used for servo control is reversed. As a result, even for a recording medium of a low quality or a nonstandard recording medium, which are treated as invalid media in the related art, it is possible to locate the object lens to the target position.

Abstract: A write power control method of controlling a recording pulse of a laser diode. The method including the steps of: setting, to a target value, a measured value corresponding to an optimum write power determined in an optimum write power determining process performed before recording information; comparing the target value with an output level measured in power control; and controlling an erase power to approach the target value based on a result of the comparison. The recording pulse is a multi-pulse defined by a peak power, the erase power, and a bottom power; and the erase power, at a time when the multi-pulse is not being output, is used in the step of controlling the erase power.

Abstract: An optical disk recording method comprising steps of a) performing recording onto the optical disk with a ZCLV method by using zone parameter storage means for storing at least one zone division time and CLV of each zone in a track formed on the optical disk, as zone parameters, for each of a plurality of recording modes and optical disk type determination means for determining the type of the optical disk before recording; b) performing optimization of the recording velocity by detecting, before recording, servo signal fluctuation by accessing the optical disk, by determining maximum recording velocity defined by the speed of a rotational motor rotating the optical disk, and by calculating a changing point of the recording velocity; and c) limiting the speed of the rotational motor, when the servo signal fluctuation at the surface of the optical disk exceeds a reference level and determining the relation between the zone division time and the CLV of each zone.