Abstract: A method of preserving a recording head which includes an ink flow path by which the ink is supplied and a discharge port in communication with the ink flow path to discharge the ink supplied into the ink flow path; is connected to an ink tank in the recording apparatus in such a way to be removably attached to or detached from the ink tank, to allow the ink to be discharged from the discharge port; and uses a reactive ink as the recording ink containing a colorant and reactive component reactive with another ink, comprises a step of examining discharging conditions of the recording head using an ink for examination of a composition free of the reactive component, which is supplied into the ink flow path, and a step of step of preserving the recording head for preservation by replacing the ink for examination remaining in the ink flow path in the recording head by an ink for preservation containing neither the colorant nor reactive component, after the step of examining discharging conditions is over.

Abstract: The present invention provides a novel 7a-alkoxy-4H-pyrano-[3,2-d]-oxazol-2(3H)-one represented by the formula (I): 1

Abstract: A sensor for measuring a physical amount such as an amount of air includes a membrane structure composed of metal stripes sandwiched between first and second insulating layers. A metal layer made of platinum or the like is formed on the first insulating layer and then heat-treated to improve its properties. Then, the metal layer is etched into a form of the metal stripes. The second insulating layer made of a material such as silicon dioxide is formed on the etched metal stripes. Since the metal layer is heat-treated before it is etched into the form of metal stripes, the metal stripes are not deformed by the heat-treatment. The second insulating layer can be formed on the metal stripes without generating cracks in the second insulating layer.

Abstract: In an active matrix type liquid crystal display device having a structure in which a pixel TFT is disposed in a trench carved in a substrate; with a section which is not carved in but left hill-shaped being present in the vicinity of the TFT, an underneath light-shielding film 4 disposed beneath a semiconductor layer 7 of the TFT is formed so as to reach at least the top of the hill-shaped section 2a; and a metal electrode layer 9 formed above the semiconductor layer of the TFT extends to the top of the hill-shaped section 2a; and besides, on the top of the hill-shaped section, a film thickness of an interlayer insulating film (5, 8) laid between the underneath light-shielding film 4 and metal electrode layer 9 is made thinner than in other sections thereof.

Abstract: An optical reproducing method using an optical recording medium having an aligned prepit portion straddled on a plurality of tracks in a radial direction. The prepit portion includes first and second prepit portions divided in a track direction with a prepit of the respective first and second prepit portions being arranged on a boundary of the respective tracks. The first prepit portion has an address information prepit and a synchronous information prepit and the second prepit has a synchronous information prepit. A trailing end of an end prepit of the first prepit portion is aligned in the radial direction. The method includes irradiating an optical spot on the optical recording medium, detecting a reflected beam from the optical recording medium, and reproducing information on the optical recording medium by using a signal obtained by the reflected beam.

Abstract: An optical reproduction apparatus for reproducing information from an optical recording medium having an aligned prepit portion straddled on a plurality of tracks in a radial direction. The prepit portion includes first and second prepit portions divided in a track direction with a prepit of the respective first and second prepit portions being arranged on a boundary of the respective tracks. The first prepit portion has an address information prepit and a synchronous information prepit and the second prepit has a synchronous information prepit. A gap is provided between the first and second prepit portion. The optical reproduction apparatus includes an irradiation source for irradiating a light spot on the optical recording medium, a detector for detecting a reflected light from the optical recording medium, and a reproducer for reproducing information by using a signal from the detector.

Abstract: A data writing system capable of writing data in at least one electrically rewritable ROM mounted on target board, comprising:

Abstract: An information recording apparatus for recording information to an optical recording medium including a disk-like substrate having a plurality of tracks and associated with a plurality of grooves. A plurality of zones are provided on the disk-like substrate and each zone includes at least two tracks. Each track is divided into a plurality of recording units of substantially the same length. The grooves are wobbled in the radial direction and a length of each recording unit is an integer multiple of a cycle of the wobble which is the same for the different zones. The information recording apparatus includes an irradiation source for irradiating a light spot on the optical recording medium, and a controller for controlling an irradiation position of an optical spot from the irradiation source.

Abstract: The present landmark update system enables route guidance through the use of landmark information which remains always the latest for route guidance, and operates as follows: a navigation device 1 communicates with a landmark server 30 so as to receive to-be-updated landmark information 1001 for guiding the user by utilizing landmarks. Information about any landmark displayed is transferred to the landmark server 30 as cumulative information 1002. The landmark server 30 manages the cumulative information 1002 so that compilation data 1003 is generated for transfer to a retailer terminal 40 corresponding to the displayed landmark(s). The retailer terminal 40 refers to the compilation data 1003 so as to generate landmark information which is considered optimum, and transfers it to the landmark server 30 as registering landmark information 1004.

Abstract: A hole injection layer, a hole transport layer, a mixture luminescent layer, a hole blocking layer, an electron injection layer and a cathode are formed on an anode. The mixture luminescent layer includes TCTA as a luminescent substance, Ir(ppy) as a substance emitting light through a triplet excited state, and DCJTB as a luminescent substance emitting the light of a spectral component in the wavelength range of red.

Abstract: An optical reproduction apparatus for reproducing information from an optical recording medium having an aligned prepit portion straddled on a plurality of tracks in a radial direction. The prepit portion includes first and second prepit portions divided in a track direction with a prepit of the respective first and second prepit portions being arranged on a boundary of the respective tracks. The first prepit portion has an address information prepit and a synchronous information prepit and the second prepit has a synchronous information prepit. A trailing end of an end prepit of the first prepit portion is aligned in the radial direction. The optical reproduction apparatus includes an irradiation source for irradiating a light spot on the optical recording medium, a detector for detecting a reflected light from the optical recording medium, and a reproducer for reproducing information by using a signal from the detector.

Abstract: The digital signal recording/reproducing apparatus inputs a digital signal having a control flag as to a temporary copy permission, and records the digital signal temporarily into a recording medium in accordance with conditions in the control flag, then reproducing the digital signal temporarily from the recording medium in accordance with the conditions in the control flag. The recording/reproducing of the temporary copy is permitted, depending on the following conditions: The recording medium's type, the reproducing point-in-time, the reproducing time-period, and the reproducing frequency. With this method employed, even in a program permitting no recording, the temporary recording/reproducing is permitted under a condition of being limited to the time-shift recording on the receiving side.

Abstract: An optical reproducing method for an optical medium, including a disk-like substrate, a spiral or concentric-shaped groove structure along the tracks formed on the disk-like substrate with each of the tracks being divided into a plurality of units including a blank portion in a circumferential direction of the groove structure. The blank portion is a non-groove portion. The groove structure is formed with a wobble in a fixed cycled in a radial direction with the fixed cycle of the wobble continuing in the circumferential direction along the track. Each length of the units is an integer multiple of the cycle of the wobble. The method includes irradiating an optical spot on the optical medium, detecting a reflected beam from the optical medium, and reproducing information on the optical medium by using a signal obtained by the reflected beam.

Abstract: A file input/output control system has first computers each having disks and connected to a network; and at least one second computer connected to the network for accessing the disks connected to the plurality of first computers, the second computer having: a retriever for retrieving first data access requests issued from a plurality of processes of an application and comparing the first data access requests with correspondence relation defining information to thereby confirm that the first data access requests are accesses to disks, the correspondence relation defining information being entered by a user in advance and indicating a correspondence relation between the disks and each of regions in a file stored in disks of the first computers; and a scheduler for creating second data access requests to the disks from first data access requests confirmed to be accesses to disks, in accordance with the correspondence relation defining information between the disks and each of the regions in a file stored in the

Abstract: A wavelength tunable filter device has at least two optical fibers through which an optical signal is input or output; a wavelength selective element which the optical signal is input to and output from through a lens and which selects a wavelength; a mounting jig to which the wavelength selective element is fixedly secured; a rotating mechanism, having an ultrasonic motor and an encoder, for rotating the wavelength selective element; and a motor controller for controlling the ultrasonic motor for driving, wherein the mounting jig is rigidly mounted directly to a rotating shaft of the ultrasonic motor, and the amount of power that does not exceed the driving power necessary to cause the ultrasonic motor to start rotating from a stopped condition is intermittently applied to the motor controller.

Abstract: An information recording medium including a disk-like substrate with a plurality of tracks extending in a circumferential direction on the disk-like substrate and associated with a plurality of grooves. The grooves are wobbled in a radial direction of the disk-like substrate and each track is divided into a plurality of recording units of circular arc shape extending in the circumferential direction. A zone is provided which includes at least two recording units which are adjacent each other in the radial direction, and radially adjacent recording units of a respective zone are delimited by a pair of radial lines joined to form a central angle at an apex proximate to a center of the disk-like substrate. Each recording unit of a respective zone is delimited by the same central angle and the recording units of different zones are delimited by different central angles.

Abstract: A diamond-coated body including: a substrate formed of a cemented carbide; a diamond coating; and an interface layer interposed between the substrate and the diamond coating, wherein the interface layer consists of a solid solution including an aluminum nitride and a metal which belongs to one of groups IVa, Va and VIa of the periodic table. The interface layer is preferably provided by one of TiAlN, CrAlN and VAlN. The substrate is preferably formed of a super-fine particle cemented carbide.

Abstract: A remote site managing system manages, in a unified fashion, computers and peripheral devices installed at a customer site. The remote site managing system automatically receives information indicating a failure which has occurred or indicating a high possibility that a failure will occur in some of PC/servers or peripheral devices installed in a customer's office and provides maintenance services without causing a customer to be concerned about anything. Furthermore, transmission of a request to a maintenance service company and reception of a service operation report from the service company are performed by the remote site managing system in an unified fashion.

Abstract: An optical reproducing method using an optical recording medium having grooves and lands alternately provided in a radial direction. Information recording areas are formed in both of the grooves and the lands, and interruption areas intervene between portions of said grooves. In an interruption area, first information marks are disposed on a virtual extension of a first boundary between one groove and one adjacent land and second information marks are disposed on a virtual extension of a second boundary between the one groove and an other adjacent land. A trailing end of the first information marks is aligned in the radial direction. The method includes irradiating an optical spot on the optical recording medium detecting a reflected beam from the optical recording medium, and reproducing information to the optical recording medium by using a signal obtained by the reflected beam.

Abstract: An information recording apparatus for recording information to an optical recording medium, including a disk-like substrate, a spiral or concentric-shaped groove structure along tracks formed on the disk-like substrate, each of the tracks being divided into a plurality of recording units, each of the recording units including a blank portion in a circumferential direction of the groove structure, the blank portion being a non-groove portion, the groove structure is formed with a wobble in a fixed cycle in a radial direction, the fixed cycle of the wobble continuing in the circumferential direction along the track; and each length of the recording units is an integer multiple of the cycle of the wobble. The information recording apparatus includes an irradiation source for irradiating a light spot on the optical recording medium, and a controller for controlling an irradiation position of an optical spot from the irradiation source.