摘要:
A mask for photolithography having a transparent substrate which allows light having a predetermined wavelength to pass therethrough; an opaque pattern provided on said substrate for inhibiting the light from passing therethrough; and a stepped portion provided adjacent to said opaque pattern on said substrate and having an inclined area, said stepped portion being transparent for allowing the light to pass therethrough, which can be used in a photolithographic system in fabrication of semiconductor devices and the like.
摘要:
A mat or rug having a laminate structure is described composed of (A) a reverse side mat layer including (a) a laminated mat composed of (a.sup.1) base fabric and (a.sup.2) nonwoven fabric made of a thermoplastic resin fibrous binder, the base fabric (a.sup.1) and nonwoven fabric (a.sup.2) being united by needling, (b) cut piles made of a thermoplastic resin implanted from one side of the laminated mat (a), and (c) a resin adhesive layer formed by coating a liquid resin adhesive on the nonwoven fabric (a.sup.2) on the side opposite to the cut piles (b) and drying, (B) a thermoplastic resin adhesive layer, and (C) a surface mat layer, wherein the surface mat layer (C) is adhered via the thermoplastic resin adhesive layer (B) to the reverse side mat layer (A) on the side of reverse side mat layer (A) on which the liquid resin adhesive has been coated, wherein the cut piles (b) are implanted under the following conditions:Implanting density: 16 to 400 roots/in.sup.2Implanting pitch--gauge direction: 4 to 20 roots/in stitch direction: 4 to 20 roots/inPile height: 2 to 20 mmPile thickness: 20 to 1000 .mu.mPile fineness: 800 to 6000 denier.
摘要:
A disk recording apparatus being compatible with disks whose storage capacity is different, in which a first and a second recording mode can be set. In the first recording mode, linear track numbers are assigned, and in the second recording mode, offsetting track numbers are assigned, so that some of the tracks in both formats have the same track numbers to provide compatibility.
摘要:
A netlike sheet comprises woven warp and weft yarns, either the warp yarns or the weft yarns being a five-layered yarn composed of two stretched layers of polyolefin resin and layers of polyolefin resin having a melting point lower than that of the former disposed between the two stretched layers an on the outer surfaces thereof and the other being the same the five-layered yarn or a three-layered yarn composed of a central stretched layer of polyolefin resin and layers of polyolefin resin having a melting point lower than that of the former, which are disposed on both side of the stretched layer, the warp and weft yarns being heat bonded at intersections of these yarns. The netlike sheet exhibits good stiffness and excellent retention of sheet-like shape and the meshes of the net are stable during using the same.
摘要:
An automatic assembling machine is disclosed for use with a carrier having parts arranged on it in predefined positional relationships which are defined by predetermined distances therebetween in two orthogonal directions. A movable table supports the carrier and moves in two orthogonal directions in a horizontal plan. A mounting surface extends above the plane of the movable table and has first and second portions which are parallel to the two orthogonal directions. At least one working unit is attached to at least one of the portions of the mounting surface to cooperate with movements of the table in assembling the parts on the carrier.
摘要:
A type wheel comprises a rotary hub, a plurality of resilient, circumferentially spaced arms extending radially outwardly from the hub and a plurality of type elements provided at the end portions of the respective arms. The type wheel is rotated until the selected type element reaches a printing position relative to a platen. One or more sheets of paper interspersed with carbon sheets are wound around the platen for printing. A lever is positioned to adjust the distance between the type wheel and the platen in accordance with the number of sheets. A printing hammer is electromagnetically actuated to resiliently move the selected arm so that the respective type element impacts against the paper through an inked ribbon to print the desired character. The length of time required for the hammer to clear the non-selected arms of the type wheel after impact is a function of the number of sheets of paper and thereby the position of the lever. An electrical circuit computes this length of time and inhibits rotation of the type wheel thereduring.