49results about How to "Accurately formed" patented technology

A cantilever section as a substrate for a sensor includes: a base section; a movable section connected to the base section; an arm portion as a support portion extending along the movable section from the base section when viewed in a planar view as viewed from a thickness direction of the movable section; and a gap portion formed to have a predetermined gap between the movable section and the arm portion when viewed in the planar view, in which a ridge portion formed as an etching residue having a top portion on the side facing the gap portion is provided on each of facing surfaces of the movable section and the arm portion in the gap portion, and the predetermined gap is a gap between a top portion of a first ridge portion which is the ridge portion formed at one of the movable section and the arm portion, and a top portion of a second ridge portion which is the ridge portion formed at the other of the movable section and the arm portion.

A substrate for a sensor includes: a base section; a movable section connected to the base section; an arm portion as a support portion extending along the movable section from the base section; a first gap portion having a protrusion portion in which one of the movable section and the arm portion protrudes toward the other of the movable section and the arm portion, and having a predetermined gap between the protrusion portion on one side and the other of the movable section and the support portion; and a second gap portion which is located further toward the base section side than the first gap portion has a gap wider than the predetermined gap, in which in the first gap portion, one of the movable section and the arm portion has a ridge portion on the side facing the first gap portion.

Embodiments of the present invention provide a screw and driver system comprising a range of screws and a driver for said range. Each screw comprises a head having a driving recess in its surface for engagement by said driver. Each recess has a recess longitudinal axis. The recess of larger screws in the range has a plurality of superimposed recess-tiers of decreasing size with increasing depth from said surface, each recess-tier except the smallest having substantially parallel driving surfaces substantially parallel said recess longitudinal axis. The driving head of the driver has a driver longitudinal axis and a plurality of superimposed drive-tiers of decreasing size towards a tip of the driver, each drive-tier except the smallest having substantially parallel driving surfaces substantially parallel said longitudinal axis. The driver and recess are shaped so that, when the driver is engaged with the recess of any screw in said range, torque applied to the driver is transmitted to the screw through said driving surfaces. The smallest recess-tier of larger screws has a mouth in a floor of an adjacent recess-tier and has recess flanks that are all tapered from the mouth towards the recess longitudinal axis at a recess taper angle between 1.91 and 6.85°. The smallest drive-tier of the driver has a root in a base of an adjacent drive-tier and has drive flanks that are all tapered from the root towards the driver longitudinal axis at a tier taper angle between minus 1.5 and plus 2.5° difference with respect to said recess taper angle. The diameter of the drive-tier at the root and the diameter of the recess-tier at the mouth are such that, on insertion of said driver head in the screw recess, said drive and recess flanks inter-engage to deform and stick together through frictional engagement before said base engages said floor.

In a recording strategy suitable for high-speed recording, a laser driving signal includes a top pulse having a pulse width corresponding to a recording mark length and multi-pulses having a period 3-times larger than a base clock period of a recording mark. The top pulse is has the first identical-shape top pulses when the recording mark length is 3 nT (“n” is a natural number), the second identical-shape top pulses when the recording mark length is (3 n+1)T, and the third identical-shape top pulses when the recording mark length is (3n+2)T.

The present invention provides a method including generating mask data to be used in an exposure apparatus including an illumination optical system and a projection optical system which projects a pattern of the mask onto a substrate, and fabricating a mask based on the generated mask data.

In forming a mask pattern on a circuit board, a mask pattern of N-layer structure is formed in a region where the mechanical strength of the circuit board needs to be increased. N photosensitive layers are first stacked on a substrate so that they becomes lower in sensitivity from the first photosensitive layer toward the Nth photosensitive layer. In the first photosensitive layer (bottom layer), a first pattern is formed and has the same shape as a predetermined pattern to be formed on the circuit board. In the Kth photosensitive layer (N≧K≧2), a Kth pattern is formed so that the Kth pattern is smaller than a (K−1)st pattern formed in the (K−1)st photosensitive layer and arranged inside the (K−1)st pattern.

A method of processing an air bearing surface of a thin-film magnetic head slider is provided. A first silicon film, a first carbon film, a second silicon film, and a second carbon film are laminated in that order on a face of a thin-film magnetic head slider facing a medium. A protrusion resist pattern that forms protrusions is formed on the second carbon film. Portions of the second carbon film and the second silicon film that are not covered with the protrusion resist pattern are removed by reactive ion etching with O2 / CF4. A third carbon film is formed on the first carbon film exposed by the removal of the portions. The protrusion resist pattern is removed to expose the protrusions including the second silicon film and the second carbon film. An ABS resist pattern is formed on exposed surfaces of the protrusions and the third carbon film. A surface not covered with the ABS resist pattern is processed to impart an ABS uneven pattern.

Disclosed is a method of manufacturing a magnetic recording medium capable of effectively and reliably removing foreign materials on the surface of a magnetic recording medium, preventing a mask layer from remaining on the surface of the magnetic recording medium, and forming the pattern of a magnetic layer with high productivity. The method of manufacturing a magnetic recording medium includes: a step of forming a magnetic layer on a non-magnetic substrate; a step of forming a mask layer on the magnetic layer; a step of patterning the mask layer to form a mask pattern; a step of forming a magnetic recording pattern on the magnetic layer using the mask pattern; a step of burnishing the surface of the mask pattern with an abrasive; and a step of removing the mask pattern.

In a web processing device, a marking head is disposed so as to oppose an X-ray film which is trained about a print roller which is at an upstream side of slitting blades. Within a scanning range of a laser beam of a marking head, two printing regions are disposed with a non-printing region therebetween. The non-printing region is disposed so as to oppose a cutting line which is cut by the slitting blades. Before cutting the X-ray film, the web processing device forms marking patterns on both sides of the cutting line.

In a recording strategy suitable for high-speed recording, a laser driving signal includes a top pulse having a pulse width corresponding to a recording mark length and multi-pulses having a period 3-times larger than a base clock period of a recording mark. The top pulse is has the first identical-shape top pulses when the recording mark length is 3nT (“n” is a natural number), the second identical-shape top pulses when the recording mark length is (3n+1)T, and the third identical-shape top pulses when the recording mark length is (3n+2)T.

An electrode tool for electrochemical machining includes a machining electrode surface (1a). The machining electrode surface (1a) includes a conductive pattern defined by lands (3) and grooves (3a) that are formed by groove machining the electrode surface (1a). The machining electrode surface (1a) is then molded with a hard insulating resin layer (4), and a surface of the hard insulating resin layer (4) is mechanically polished to expose the lands (3) of the conductive pattern. The lands (3) are chemically dissolved to obtain a conductive pattern (14) having a surface that is formed below a resulting insulating resin surface (2), with the height difference between the two surfaces being between 1 and 5 μm. The electrode tool allows precise surface machining of work pieces and can withstand prolonged use.

Exposure for performing patterning in which micropatterns differing in pitch exist in close vicinity to one another is handled, and micropatterns are formed with high accuracy with sufficient manufacture process margins without using a photomask complicated in manufacturing process at high manufacture cost like an alternating phase shift mask. A light intensity distribution of irradiation light constituted of double pole illuminations is formed to correspond to L&S patterns. The double pole illumination is constituted of a pair of illumination modes, and the double pole illumination is constituted of a pair of illumination modes.