A single-reel magnetic tape cartridge has a cartridge casing and a single reel around which a magnetic tape is wound and which is contained in the cartridge casing for rotation, in which the magnetic tape is fixed at the leading edge thereof to a leader pin employed for extracting the magnetic tape from the cartridge and the flanges at the upper and lower ends of the leader pin are engaged by the lateral drawing force of a latch spring removably held in the tape cartridge casing. Even for cases in which there is a deviation in the insertion position in which leader pin is inserted by the record and playback apparatus, etc. causing the entry path of the leader pin into the cartridge casing to be off track, etc., it is still possible for the leader pin to be inserted into the cartridge casing. The incline angle, in relation to the insertion direction of the leader pin, at the point at which the flanges of the leader pin are brought into abutment with the guide surface of the latch spring is set within the range of 30°±5°.

Magnetic tape cartridge

A media object authentication system uses layers of security features based on digital watermarks embedded in media objects. The system generates a first digital watermark with a message payload carrying data about the object, such as a hash of text data printed on the object. The first digital watermark is combined with a content signature derived from features of the media object, such as frequency domain attributes, edge attributes, or other filtered version of the media signal (e.g., image photo on a secure document) on the media object. This combination forms a new digital watermark signal that is embedded in the host media object. To verify the object, the digital watermark payload is extracted and compared with the data about the object. The combined digital watermark and content signature is also evaluated to authenticate the media signal on the media object.

Layered security in digital watermarking

A hard film for cutting tools which is composed of (Ti1-a-b-c-d, Al a, Cr b, Si c, B d) (C l-e N e) 0.5 <= a <= 0.8, 0.06 <= b, 0 <<= c <= 0.1, 0 <= d <= 0.1, 0 <= c+d <= 0.1, a+b+c+d < 1, 0.5 <= e <= 1 (where a, b, c, and d denote respectively the atomic ratios of Al, Cr, Si, and B, and a denotes the atomic ratio of N).

Hard film for cutting tools, cutting tool coated with hard film, process for forming hard film, and target used to form hard film

A semiconductor device includes a via structure and a conductive structure. The via structure has a surface with a planar portion and a protrusion portion. The conductive structure is formed over at least part of the planar portion and not over at least part of the protrusion portion of the via structure. For example, the conductive structure is formed only onto the planar portion and not onto any of the protrusion portion for forming high quality connection between the conductive structure and the via structure.

Semiconductor Device and Method of Fabricating the Same

Some embodiments of the invention provide a router that can define a route that has different widths along different directions on the same layer. To facilitate the creation of such a route, some embodiments adaptively define the shape of interconnect-line ends (i.e., the shape of route-segment ends) on a particular layer based on the routing directions available on the particular layer. By so defining these shapes, these embodiments improve the alignment of route segments that have differing widths. In other words, dynamically defining the interconnect-line ends improves the shape of a route at bends along which the route transition from one width to another. Also, to facilitate the creation of a route with different widths and/or spacing in different directions on a particular layer, some embodiments define, for each available routing direction on the particular layer, an “unroutable” bloated region about a previously defined geometry (e.g., a previously defined obstacle, wire, or via pad) on the particular layer. An item's bloated region for a particular routing direction specifies the portion of the particular layer that is not available for route segments along the particular routing direction. As further described below, the item's bloated region for a particular direction is derived based on the minimum spacing required between the item and any route segment in the particular direction for the particular net.

Method and apparatus for routing

PROBLEM TO BE SOLVED: To form a deposited layer having strong adhesive force on the front surface of an iron steel, a cemented alloy, or the like by using a material in which the powder containing metal halide compound powder is formed as a discharge electrode, and generating electric discharge between the electrode and a work piece in liquid in which carbon exists. SOLUTION: A submerged electric discharge deposited front surface by a TiH2 powder electrode is composed of Ti and TiC and bonded to a cemented alloy front surface of a base material without containing any oxide. In the reaction with the base material surface in electric discharge, since the temperature of the cemented front surface instantaneously reaches the boiling point of the material, the deposited Ti and TiC can be diffused and fused to the base material side. The component composition from the boundary surface to the base material to the front surface of the deposited layer is Ti and TiC, and the boundary surface and the front surface are bonded without containing any oxide. This Ti component of the topmost front surface part of the deposited layer is oxidized in the air into TiO2 , however, the inside is Ti with activity.

Surface treating method by submerged electric discharge

A discharge surface treatment method for forming a hard coating (16) on the surface of a workpiece (2) by using energy of discharge generated between an electrode (14) and the workpiece (2), wherein a pulse-form arch discharge, a continuous arch discharge, or an arch discharge consisting of the continuous arch discharge and an intermittent arch discharge is generated between the electrode (14) and the workpiece (2) and the hard coating (16) is formed on the surface of the workpiece (2) by the energy of the arch discharge; the electrode (14) being formed by using as its material metal powder, metal alloy powder, ceramic-based material powder or a mixture of the powders, compression-molding the electrode material and firing the resultant material at a temperature for fusing part of binding materials used in the electrode material.

Electrode for discharge surface treatment and manufacturing method therefor and discharge surface treatment method and device

To obtain high machining speed and machining accuracy in three-dimensional machining by using of an electrode of simple shape. Applying voltage between an electrode of simple shape and a workpiece, performing three-dimensional control by an NC control while synthesizing a feed of a Z-axis direction for correcting longitudinal consumed amount of an electrode with an X-Y plane feed, storing amount equivalent to an X-Y moving distance in an X-Y plane corresponding to correcting moving amount of the Z-axis direction in an electrical discharge machining method for machining a desired three-dimensional shape and performing a feed of correcting moving amount in the Z-axis direction each time a moving distance in the X-Y plane on a moving locus during machining reaches the above stored amount.

Three-dimensional electrical discharge machining method and apparatus utilizing NC control

A sliding surface of a high-temperature portion is subjected to an electro-discharge surface treatment with one or both of a high-temperature hard material (4) and a material having a lubricating property at a high temperature (6). The high-temperature hard material (4) is any or a mixture of cBN, TiC, TiN, TiAlN, TiB2, WC, Cr3C2, SiC, ZrC, VC, B4C, Si3N4, ZrO2, and Al2O3. The material having the lubricating property at the high temperature (6) contains chromium and/or chromium oxide (Cr2O3) and/or hexaboron nitride (hBN). An electrode formed by compression molding of the high-temperature hard material, and the high-temperature lubricating material containing at least one of Cr and hBN and having the lubricating property at the high temperature is used as the electrode for the electro-discharge surface treatment.

Method for coating sliding surface of high temperature member, and high temperature member and electrode for electric discharge surface treatment

A method and apparatus for detecting and controlling the operation of an electric discharge machine for machining a workpiece. The machining is conducted by generating pulse discharges at a machining gap formed by a machining electrode and the workpiece opposed to each other. The alternating-current components or high frequency components of at least one of the current, voltage and impedance of the machining gap, the rectified components thereof, or amplitude, frequency or other signal characteristics thereof are detected and processed for control of the machining. The processing may include frequency analysis, pulse counting, threshold detection and the like using analog and digital processing.

Akihiro Goto

Papers

Surface treating method by submerged electric discharge

Electrode for discharge surface treatment and manufacturing method therefor and discharge surface treatment method and device

Three-dimensional electrical discharge machining method and apparatus utilizing NC control

Method for coating sliding surface of high temperature member, and high temperature member and electrode for electric discharge surface treatment

Electrical discharge machine and machining method therefor