Hitachi, Ltd.

Ricoh Company, Ltd.

Hitachi Global Storage Technologies Japan, Ltd.

Hitachi Global Storage Technologies Netherlands B.v.

Other

Kao Corporation

Xanavi Informatics Corporation

Hitachi Microcomputer System, Ltd.

Hitachi Instrument Engineering Co., Ltd.

Naoki Satoh

Terumi Takashi

Seiichi Mita

Yoshiju Watanabe

Yasuhide Ouchi

Akihiko Hirano

Yosuke Hori

Yasutaka Nishida

Mikio Tokuyama

Hiroyuki Tsuchinaga

Atsushi Saito

Masayuki Kurita

Ryushi Shimokawa

Hideki Sawaguchi

Junguo Xu

Shoichi Miyazawa

Hidekazu Yaginuma

Yoshiteru Ishida

Toshihiro Nitta

Hideki Miyasaka

Koji Shida

Yasuyuki Ito

Tomoaki Hirai

Satoshi Minoshima

Natsuko Iwashita

Takeshi Maeda

Shigeo Nakamura

Hisataka Sugiyama

Hirofumi Sukeda

Kozo Nakamura

Kouki Uefune

Mikio Suzuki

Takeshi Sano

Kyo Akagi

Takashi Yamaguchi

Takahiko Matsumoto

Masao Hotta

Hitoshi Ogawa

Eisaku Saiki

Hideaki Maeda

Masuo Umemoto

Daisuke Takagi

Ryuzaburo Takeda

Takeshi Iizaki

Jun'ichi Taguchi

Yuusuke Ishizaki

Yoshimasa Okamoto

Hiroyuki Kohida

Hiroto Tanamachi

Yoshihisa Ashikawa

Kei Yasuna

Momoko Shionoiri

Hirohisa Miyazawa

Hirotsugu Kojima

Tuyosi Shudo

Wataru Sakurai

Yusuke Nonoyama

Tatsuya Sameshima

Kouzi Morita

Tomoyuki Aratani

Makoto Horisaki

Tomonori Maekawa

Masayuki Yumoto

Keiichi Sanada

Ryo Takamatsu

Yoshihisa Kitano

Makoto Yoshida

Hidehiko Asoh

Masakazu Hosino

Juguo Xu

Takehiro Yamazaki

Chihiro Kubo

Shunsuke Watabe

Yuji Ishino

An object of the present invention is to provide a technique for precisely arranging nerve cells on a substrate while suppressing the migration of nerve cells. A manufacturing method for a substrate on which nerve cells are arranged is provided, the method including a step of arranging, on a substrate, a plurality of liquid droplets containing nerve cells by an inkjet method to form one or a plurality of liquid pools, the substrate having a region in which a cell adhesive material is arranged and a region in which a cell non-adhesive material is arranged; and a step of incubating the liquid pool until the nerve cells sediment and temporarily adhere onto the substrate to form a cell aggregate. The diameter per one liquid pool is 500 μm or less, and the density of nerve cells per one liquid pool is 10cells/cmor more.

Manufacturing method for substrate on which nerve cells are arranged

Provided is a cell tissue producing method including: a cell adhesive portion forming step of forming a cell adhesive portion formed of a cell adhesive material and having a predetermined shape at a predetermined position over a substrate having a cell non-adhesive surface; and a cell locating step of discharging a cell suspension containing at least cells and a cell drying inhibitor onto the cell adhesive portion in the form of a liquid droplet to locate the cells.

Cell tissue producing method and apparatus, and non-transitory recording medium storing cell tissue producing program

A suspension having a magnetic head assemblymounted thereon is provided, wherein the magnetic head assembly comprises: a write head-; a read head-; and a resistive heating element-for controlling the flying heights of the magnetic heads, wherein the wires HTx and GTx for the resistive heating element is disposed such that they sandwich the wires RxX and RxY for the read head. The wires for the resistive heating element may be disposed between the wires for the write head and the wires for the read head. Furthermore, the waveform of the current or voltage to the resistive heating element has a time constant of 1 &#x3bc;sec or more, the resistive heating element having wires disposed near the wires of the read head.

Suspension having magnetic head assembly mounted thereon and magnetic recording disk drive using the suspension

An image forming apparatus includes two AC power input cords to be connected to an AC power source. The image forming apparatus can detect if at least one of the two AC power input cords is not connected to the AC power source. An input voltage detector or a zero-cross signal detector receives an input from the one AC input power cord, and detects a voltage state of connection to the AC power input cord. A controller utilizes signals from the input voltage detector or zero-cross signal detector to detect whether the one AC input power cord is connected to the AC power source. An operator can also be provided an indication if it is determined that the one AC power input cord is not connected to the AC power source.

Image forming apparatus with plural AC sources

Embodiments of the present invention efficiently format long sectors, without decreasing the performance, in a magnetic disk drive in which servo sectors are radially formed at regular intervals, and make full use of the ECC performance that is enhanced by the long sectors. In one embodiment, a data format in each zone on a magnetic disk is completed by a plurality of tracks N (N is an integer, which is 2 or more). The storage capacity per track of the outermost radius zone Z#is 150 kB. In this zone, long sectors each having a length of 32 kB are formatted with the number of tracks per format N#=3. The storage capacity per track of the innermost radius zone Z#m is 80 kB. In this zone, long sectors each having a length of 32 kB are formatted with the number of tracks per format N#m=2.

Method for formatting data sectors on magnetic disk, and magnetic disk drive

Embodiments of the invention provide a disk drive that is capable of enhancing the storage capacity increase ratio while reducing the processing load for read/write operations. In one embodiment, a disk drive comprises a recording medium and a control section. The recording medium includes concentric or spiral data tracks. Each of the data tracks is provided with a plurality of circumferentially arranged sectors. The control section receives instructions for writing into a plurality of sectors, rearranges the data to be written into each sector into groups of N pieces of write data, and writes the data into N data tracks.

Disk drive with enhanced storage capacity increase ratio

Embodiments of the invention increase the convenience of a magnetic disk drive for portable use by shortening a period of time required to record a large amount of data, and by increasing the reproduction time, in the magnetic disk drive. In one embodiment, an area between servo data parts is interpolated by servo data parts, each of which stores a burst signal, so that the allocation density of a burst signal is made k times. At the time of write operation in which data is written, only the servo data parts are made use of to perform the servo control while a disk is driven at high rotational speed so as to reduce the recording time. At the time of read operation in which data is reproduced, the servo data parts are made use of to ensure the required precision of the servo control at low rotational speed that is 1/k of the rotational speed at the time of write operation. The reproduction at low rotational speed enables the reduction in power consumption.

Magnetic disk drive and magnetic disk medium

Embodiments of the invention provide a disk drive that is capable of effectively controlling a side erase, which is one of the problems with the use of the perpendicular recording technology. In one embodiment, tracks on a recording medium are formed concentrically or spirally by overwriting a primary side track, which is either an inner track or outer track, onto part of a secondary side track, which is on the side away from the primary side track. A head unit is installed so that a magnetic head positioned at one end of the head unit relatively may move over the recording medium and that the yaw angle prevailing at an end track of the primary side on the recording medium may be substantially zero.

disk drive with side erase control

An image forming apparatus includes an image forming mechanism and an image fixing mechanism which includes a fixing member, a capacitor, a charger, a first heater, a second heater, a sensor, and a controller. The charger charges the capacitor with a first electric power. The first heater heats-the fixing member with the first electric power from the capacitor. The second heater heats the fixing member with a second electric power. The sensor detects a temperature of the fixing member. The controller controls the second electric power to control the second heater, determines whether the temperature is needed to be increased based on the temperature, and starts supplying the first electric power to the first heater from the capacitor when the second electric power is of a greatest value and when the temperature is needed to be increased.

Method and apparatus for image forming capable of effectively performing an image fixing

A suspension having a magnetic head assemblymounted thereon is provided, wherein the magnetic head assembly comprises: a write head-a read head-and a resistive heating element-for controlling the flying heights of the magnetic heads, wherein the wires HTx and GTx for the resistive heating element is disposed such that they sandwich the wires RxX and RxY for the read head. The wires for the resistive heating element may be disposed between the wires for the write head and the wires for the read head. Furthermore, the waveform of the current or voltage to the resistive heating element has a time constant of 1 &#x3bc;sec or more, the resistive heating element having wires disposed near the wires of the read head.

A magnetic disk apparatus and a servo pattern recording method therefor, enabling writing of servo signal with high quality, without being affected with ill influences due to fluctuation on a rotation speed when conducting the self servo write operation, comprises: a magnetic disk; a headhaving a write element for use of recording information onto the magnetic disk and a read element for reproducing information from the magnetic disk; and an actuator for moving said head to a desired radial position on the magnetic disk, wherein on the magnetic disk is recorded servo patternsfor positioning the head on a recording surface thereof, and within each of the servo patterns are recorded, a pattern sector markeras a marker for detecting passage time of the head, a track ID code, and a burst patternfor use of detection of the radial position of the head, following a preamblefor use of synchronization of time-base circuit, and further recorded and disposed a second preambleand a second sector markercontinuously.

Magnetic disk apparatus and servo pattern recording method therefor

An image forming apparatus includes a fixing unit that thermally fixes a toner image, a power control unit that controls a power supply from an auxiliary power supply to the fixing unit, a job-turnaround-time predicting unit that predicts a job turnaround time for executing an image forming job, a charging-time predicting unit that predicts a charging time for charging the auxiliary power supply, and a control unit that controls a charging operation for the auxiliary power supply and execution of the image forming job based on the job turnaround time predicted and the charging time predicted, such that the job turnaround time for the image forming job is minimized.

Image forming apparatus, image forming method, and fixing unit

In a magnetic disk apparatus which is removably mounted or embedded to a host apparatus and intermittently accessed for recording/reproducing data, a RAM contained in the host apparatus is utilized for a portion or entirety of a buffer RAM for use in the intermittent access to accomplish a reduction in size and cost of the magnetic disk apparatus. In addition, the magnetic disk apparatus is controlled to rotate a magnetic disk at a variable rotational speed, and operated at a rotational speed at which the total power consumption is minimized in accordance with the capacity of the utilized buffer RAM and whether an access is made for recording or reproduction, thereby improving a power saving effect.

Magnetic disk drive which accesses host RAM

The present invention enables recovery of data reading, even when thermal asperities or defective media will make it impossible to increase the number of retries or to read the data, occur in the AGC/PLL part. In a device for writing and reading information, when an error occurs in the region of the recording media where the AGC/PLL signal is written, and if that information is written continuously to several sectors, then data reading is performed by using the AGC/PLL of the following sector, without performing a retry, or by performing a minimum number of retries.

Signal processing technique for preventing delay in read time from retry operations

Growing community of inventors

Odawara, Japan

Naoki Satoh