Abstract: The present invention provides a thermosensitive recording medium with excellent color developing sensitivity, moist heat resistance and plasticizer resistance, as well as excellent heat resistance, background coloring, light resistance and the like in the printed image. A diphenyl sulfone derivative containing a hydroxyl group on one end and an alkoxy group on the other end has a higher melting point than the one containing hydroxyl groups on both ends. As a result, the thermosensitive recording medium obtained using the diphenyl sulfone derivative as the color developing agent in the thermosensitive color developing layer has excellent heat resistance. However the color developing sensitivity of the thermosensitive recording medium generally declines simultaneously, when a color developing agent with a high melting point is ordinarily used.

Abstract: The present invention presents a thermosensitive recording medium having an excellent color developing property, water resistance and preservation properties (such as anti-self-color-development) and is harmless to the environment. The present invention is a thermosensitive recording medium having a thermosensitive recording layer comprising a colorless or pale colored basic leuco dye and an electron accepting developing agent on a substrate, wherein the thermosensitive recording layer further comprises a resin containing a carboxyl group, an epichlorohydrin resin and a modified polyamine/amide resin. This thermosensitive recording medium is suitable for recording with a low applied energy.

Abstract: The present invention provides a thermosensitive recording medium, which has a satisfactory color developing sensitivity, an excellent general printability (surface strength) and an excellent anti-sticking property. The thermosensitive recording layer of the thermosensitive recording medium of the present invention contains an alkylketene dimer. Without forming a protecting layer, the thermosensitive recording medium of the present invention is superior in color developing sensitivity, general printability (surface strength) and anti-sticking property.

Abstract: The present invention provides a thermosensitive recording medium, which is excellent in stamping ability, anti-scratching ability, and water and plasticizer resistance of image area as well as in recording sensitivity, image quality and storage stability. The present invention is a thermosensitive recording medium having a thermosensitive recording layer containing at least a colorless or pale colored basic leuco dye and an electron accepting developing agent as a coating layer on a substrate, wherein at least an outermost layer among the thermosensitive recording layer and other optionally prepared coated layers contains powdered cellulose, wherein the powdered cellulose is prepared by a dry grinding process at ambient temperature.

Abstract: The present invention presents a thermosensitive recording medium having excellent color development, image quality and preservation properties as well as excellent stamp receptivity, anti-scratching ability, printability and water blocking resistance. The present invention is a thermosensitive recording medium having a thermosensitive recording layer comprising at least a colorless or pale colored basic leuco dye and an electron accepting developing agent as a coating layer on a substrate, wherein at least an outermost layer among the thermosensitive recording layer and other optionally prepared coated layers contains rice starch particles.

Abstract: A thermally-sensitive recording medium having a protecting layer formed on a thermally-sensitive recording layer containing a colorless or pale-colored electron-donating leuco dye and electron-accepting color-developing agent. The thermally-sensitive recording layer is formed on a substrate, and the protecting layer contains a resin that contains a carboxyl group, epichlorohydrin resin and modified polyamine/amide resin, and the thermally-sensitive recording medium exhibits sufficient resistant against water such as rain or humidity, and further is excellent in printing run-ability (head debris and sticking) and sensitivity.

Abstract: A coating paper which can be removed by water comprising a substrate paper of single layer or lamellar structure having two or more layers which has at least one water decaying layer containing 5-100 wt % of water insoluble fibrous carboxy alkyl cellulose and a water base color is coated on said substrate paper, wherein a coating layer and at least a part of substrate paper which is a supporter of said coating layer has a characteristic of easily removing, dispersion and dissolving by contact with water, and can provide a water decaying coating paper used preferably for an use of label for a returnable container which may easily remove by contact with water and excellent in printing aptitude and a method for preparation thereof can be provided.

Abstract: A thermally sensitive recording medium whose luster of printed part is excellent can be provided by a thermally sensitive recording medium of single layer or multi layers having at least a thermally sensitive recording layer that contains a colorless or pale colored electron donating leuco dye and an electron accepting color developing agent on a substrate comprising, containing a pigment whose aspect ratio is 30 or more in at least one layer formed on a substrate.

Abstract: A thermally sensitive recording medium laminating a protecting layer on a thermally sensitive recording layer containing a colorless or pale colored electron donating leuco dye and electron accepting color developing agent, said thermally sensitive recording layer is formed on a substrate, and said protecting layer is comprising a resin that contains a carboxyl group, epichlorohydrin resin and modified polyamine/amide resin, and said thermally sensitive recording medium exhibits sufficient resistance against water such as rain or humidity, further excellent in printing run-ability (head debris and sticking) and sensitivity.

Abstract: A thermally sensitive recording medium whose luster of printed part is excellent can be provided by a thermally sensitive recording medium of single layer or multi layers having at least a thermally sensitive recording layer that contains a colorless or pale colored electron donating leuco dye and an electron accepting color developing agent on a substrate comprising, containing a pigment whose aspect ratio is 30 or more in at least one layer formed on a substrate.

Abstract: A coating paper which can be removed by water comprising a substrate paper of single layer or lamellar structure having two or more layers which has at least one water decaying layer containing 5-100 wt % of water insoluble fibrous carboxy alkyl cellulose and a water base color is coated on said substrate paper, wherein a coating layer and at least a part of substrate paper which is a supporter of said coating layer has a characteristic of easily removing, dispersion and dissolving by contact with water, and can provide a water decaying coating paper used preferably for an use of label for a returnable container which may easily remove by contact with water and excellent in printing aptitude and a method for preparation thereof can be provided.

Abstract: A disk drive has two channels of upper interfaces, and one channel is connected to a disk array controller, and the other channel is connected between a plurality of disk drives. A data disk drive reads the old data on the recording medium, calculates the exclusive OR of the old data and the corresponding data from the disk array controller, and transfers it to a parity disk as pseudo-parity data from the other channel. The parity disk drive reads the old parity data on the recording medium, calculates the exclusive OR of the old parity data and the pseudo-parity data, and writes it as new parity data.

Abstract: A disk drive has two channels of upper interfaces, and one channel is connected to a disk array controller, and the other channel is connected between a plurality of disk drives. A data disk drive reads the old data on the recording medium, calculates the exclusive OR of the old data and the corresponding data from the disk array controller, and transfers it to a parity disk as pseudo-parity data from the other channel. The parity disk drive reads the old parity data on the recording medium, calculates the exclusive OR of the old parity data and the pseudo-parity data, and writes it as new parity data.

Abstract: A buffer memory capable of storing contents of a plurality of tracks of a disk volume is provided in a disk controller or a disk drive, and in dump processing requested by a higher rank unit (CPU) to the disk controller, the data is immediately transferred from the buffer memory if the data to be dumped is present in the buffer memory, and if the data to be dumped is not present in the buffer memory, dump prefetching into the buffer memory is started and the execution of the dump processing is interrupted so that an on-line input/output operation other than the dump processing is accepted. When the dump prefetching into the buffer memory is over, the interrupted dump processing is resumed.

Abstract: A buffer memory capable of storing contents of a plurality of tracks of a disk volume is provided in a disk controller or a disk drive, and in dump processing requested by a higher rank unit (CPU) to the disk controller, the data is immediately transferred from the buffer memory if the data to be dumped is present in the buffer memory, and if the data to be dumped is not present in the buffer memory, dump prefetching into the buffer memory is started and the execution of the dump processing is interrupted so that an on-line input/output operation other than the dump processing is accepted. When the dump prefetching into the buffer memory is over, the interrupted dump processing is resumed.

Abstract: When a positioning operation of a head on a track of a disk including a target record is completed, information is read out from the track of the disk and stored in a buffer memory without waiting a read command from a host side controller. A transfer operation of the target record of the information from the buffer memory to the controller is performed when the controller is not busy and generates the read command. A transfer rate of the record from the buffer memory to the controller is made faster than a read rate of the information from a disk or a write rate into the buffer memory, so that a nominal transfer rate of an entire system is increased without changing the read or write rate.