Fuji Photo Film Company, Limited

Hitachi, Ltd.

Satoru Takayama

Masaaki Fujiyama

Nobutaka Yamaguchi

Masahiro Utumi

Goro Akashi

Eiichi Tadokoro

Keishi Tamura

Dai Taninaka

Koji Sasazawa

Masaki Fujiyama

Nobutana Yamaguchi

Provided is a storage system having a first storage controller and a second storage controller. An actual device of the second storage controller is mapped to a virtual device of the first storage controller. The first storage controller has a port for transmitting control cylinder information to be written in a control information area of the actual device. As the format data to be transmitted from the first storage controller to the second storage controller, it will suffice so as long as control cylinder information is transmitted, and high speed formatting can be performed since it is not necessary to transmit 0 data.

Storage system, formatting method and computer program to enable high speed physical formatting

The present invention relates to a leader or trailer tape for a magnetic tape, which comprises a plastic support member and, on one side thereof, a laminated coating consisting of at least (1) an electrically conductive layer as a first layer and (2) a layer containing mainly a pigment and a binder as a second layer.

Leader or trailer tape for a magnetic tape

This invention relates to a magnetic recording medium comprising a support base having a surface roughness of at most 0.33 micron, a magnetic recording layer having a Young's modulus of at least 5.times.10.sup.10 dyne/cm.sup.2 and being provided on one side of the base and a cationic surface active agent layer provided on the other side of the base in a proportion of 0.2 to 500 mg/m.sup.2.

Magnetic recording medium

This invention relates to a magnetic recording medium which comprises a support having a surface roughness of at most 0.35 micron, a magnetic recording layer on one side of the support and a lubricant layer containing a lubricant represented by the following general formula, ##STR1## in which R=C.sub.n H.sub.2n+1, n=12-18, x=0-8 and y=1-50 and being coated onto the opposite side to the magnetic recording layer with a mean coating quantity of 1 to 500 mg/m.sup.2.

A cleaning tape used for cleaning the surface of a magnetic recording head of a tape recorder or the like consists of a substrate and a cleaning layer. The cleaning layer contains two kinds of particles. One kind of particles has a small diameter and a high hardness, and the other has a large diameter and a low hardness.

Cleaning tape for magnetic head

A magnetic recording material which comprises a support having thereon a magnetic recording layer comprising a ferromagnetic substance and a binder, wherein the ferromagnetic substance comprises a mixture of (1) a Berthollide iron oxide having a particle size of about 0.5 .mu. or larger and a degree of oxidation represented by the value of x in FeO.sub.x of 1.33&lt;x.ltoreq.1.45 and (2) a Berthollide iron oxide having a particle size of about 0.4 .mu. or smaller and a degree of oxidation represented by the value of x in FeO.sub.x of 1.43.ltoreq. x&lt; 1.50, in which the weight ratio of Berthollide iron oxide (1) to Berthollide iron oxide (2) ranges from about 1:4 to 4:1.

Growing community of inventors

Odawara, Japan

Satoru Takayama