摘要:
A method of operating a weaving machine and a shedding machine aims, to achieve so-called soft starts and soft stops, in particular, of the shedding machine. The weaving machine is equipped with an electromotive main drive and the shedding machine is equipped with an electromotive auxiliary drive. In the method the shedding machine is started at a time point (t1) that lies before the starting time point of the weaving machine, and, upon a triggered interruption of the weaving process, a shedding machine comes to the standstill at a time point (t5) that lies after the standstill time point (t4) of the weaving machine.
摘要:
A frictional vibration damper, in particular for washing machines with an oscillatory support of a washer unit has an approximately tube-shaped housing and a tappet displaceable in it. An articulation element is provided at the outer end of each the housing and the tappet. Further, a friction piston bearing with a friction coating on the internal wall of the housing is formed on the tappet, which friction piston is extendable by means of a linearly operating servomotor. In order to achieve high safety in operation at little expenditure, the servomotor is arranged in the tappet. It is formed by an electrically heatable thermoactuator element having a housing with a piston which changes its position relative to the housing upon heating. The piston of the servomotor directly bears against an expansion member serving to expand the friction piston.
摘要:
A device for picking up the position of an angle of a rotating part which is provided with angle markers 11 or teeth being simultaneously distributed over its circumference, whereby at least one angle marker and/or intermediate space between two angle markers is shaped differently serving as a reference marker 12. This can be realized, for example, by a wide or smaller angle marker or gap between two angle markers. The distance between two angle marker flanks is picked up by a counter 17 which counts a cycle frequency, whereby the counter is a free running continously counting counter. The instantaneously present counter level is transmitted into a storage 18 for each angle marker flank (ascending flank or rear flank) to be evaluated. Subtractions of two successive storage values and comparisons of successive corresponding differential values are performed for recognizing a reference marker. A reference marker signal is generated during a deviation of a differential value by a predetermined dimension from the established differential value, preferably before or after.
摘要:
A magnetic recording disk comprising a non-magnetic substrate and two or more firmly adhering magnetizable layers applied to one or both sides thereof, the layer located directly on the substrate being magnetically isotropic, while the second layer and any additional layers exhibit orientation of the anisotropic magnetic particles parallel to the substrate and to the envisaged recording direction.
摘要:
A magnetic recording medium comprising a non-magnetic base which is dimensionally stable at up to 300.degree. C., and an 0.03-0.4 .mu.m thick magnetically hard recording layer of an Sm-Co alloy, vacuum-deposited thereon, which layer possesses uniaxial magnetic anisotropy in the plane of the layer, and a process for the manufacture of this recording medium.
摘要:
The invention relates to an improved process for the manufacture of magnetic discs carrying very thin magnetic layers, by applying a fluid dispersion of magnetic materials in a binder mixture to rigid base discs by the spin-coating process. Above the side of the base disc which is to be provided with the magnetic layer, there are arranged means which produce an aerodynamic boundary layer above the discs during rotation of the latter. This avoids the formation of surface irregularities and of coating streaks during production of the layer by spin-coating.
摘要:
A magnetic recording medium consists of a non-magnetic base, on which the magnetic coating is a layer of a dispersion, containing a lubricant, of a magnetic pigment in a polymeric binder. The lubricant is a block copolymer which contains siloxane units and alkyleneoxy units of 2 to 4 carbon atoms, the alkyleneoxy units being bonded to the polysiloxane radical through a Si--O--C or Si--C group. The use of this lubricant gives a magnetic recording medium which has the advantages of good fluid lubrication and an excellent coefficient of friction which does not vary with time.
摘要:
The use of surfactants A, the 1% by weight aqueous solutions of which exhibit a static surface tension 3; and a photolithographic process making use of the surfactants A in immersion photoresist layers, photoresist layers exposed to actinic radiation, developer solutions for the exposed photoresist layers and/or in chemical rinse solutions for developed patterned photoresists comprising patterns having line-space dimensions below 50 nm and aspect ratios >3. By way of the surfactants A, pattern collapse is prevented, line edge roughness is reduced, watermark defects are prevented and removed and defects are reduced by removing particles.
摘要:
The use of surfactants A, the 1% by weight aqueous solutions of which exhibit a static surface tension 3; and a photolithographic process making use of the surfactants A in immersion photoresist layers, photoresist layers exposed to actinic radiation, developer solutions for the exposed photoresist layers and/or in chemical rinse solutions for developed patterned photoresists comprising patterns having line-space dimensions below 50 nm and aspect ratios >3. By way of the surfactants A, pattern collapse is prevented, line edge roughness is reduced, watermark defects are prevented and removed and defects are reduced by removing particles.
摘要:
A direct drive for a loom reed includes a linear motor carrying out a linear oscillating motion, or an arc segment motor carrying out a pivoting oscillating motion, or a circular coaxial motor carrying out a pivoting oscillating motion. The circular coaxial motor has a hollow shaft rotor arranged within a hollow shaft stator, and may further have an additional hollow shaft stator arranged within the rotor in a sandwich motor construction. The arc segment motor and the linear motor may similarly have a rotor member sandwiched between two stator members. Two motor units can be provided respectively above and below the weaving plane to drive the reed together. With these measures, the driving force is increased, yet the drive arrangement is confined to the available installation space.