摘要:
A process for the manufacture of a magnetic recording medium by producing a dispersion of a finely divided anisotropic magnetic material and conventional additives in a solution of a polymeric binder in an organic solvent, applying a layer of the dispersion to a nonmagnetizable base material, then orienting the anisotropic magnetic material by means of a magnetic field, and drying the layer, wherein a compound of the formula (I) ##STR1## where R.sup.1 is straight-chain or branched akyl of 2 to 10 carbon atoms, cycloalkyl of 6 to 10 carbon atoms or aralkyl of 7 to 14 carbon atoms and R.sup.2 is hydrogen or one of the radicals given in the definition of R.sup.1, is added to the dispersion.
摘要:
Electronic organiser (10) with a calendar (11) in which appointments at least according to date, time and an individual description, for example a person to be visited, are variable. If the organiser (10) is provided with an interface (22) which can exchange data in respect of the appointments with an interface (22) existing on another device (21), the data recorded in the calendar (11) can be used to run the other device or the electronic organiser (10) can be controlled by the other device. Thus for example data recorded in the calendar (11) can be used by a navigation system for faster input of the destination, or for example departure appointments can be changed by the other device according to the traffic or other situations.
摘要:
Magnetic recording media comprise a non-magnetic base which is provided with a magnetic layer consisting of finely divided anisotropic magnetic material which is dispersible in binders and additives, the binder being a mixture of (1) an OH-containing polyurethane which is crosslinked with polyisocyanates, (2) a high molecular weight thermoplastic linear polyurethane and (3) a polyvinylformal binder, a phenoxy resin, a cellulose ester or a vinyl chloride copolymer.
摘要:
An apparatus for the manufacture of a jacket, comprising two cover sheets joined to one another, for a flexible disk for data recording, the cover sheets and the nonwoven lining being punched out in the form of blanks including the functional apertures, and the cover sheet blank and the nonwoven blank being joined to one another and then folded to form the jacket, wherein the sheet material for the cover sheets is transferred from a magazine, with the aid of mechanical, air-operated grippers provided with positioning means, to an assembly surface and is there positioned, the sheet of nonwoven material from a second magazine is tacked onto the cover sheet material by spot-welding and is then joined thereto over the entire surface by thermal welding, thereafter the cover sheet material thus provided with the nonwoven covering is transferred to a holder frame and then conveyed, with this frame, to a punching device where it is punched out to form a blank provided with the functional apertures, subsequently the blank is removed from the holder frame by means of mechanical, air-operated grippers and is placed in the correct position on a carrier and folded to form the jacket, and at the same time the folds are stabilized by heating and subsequently cooling the material in the region of the folds, and the surfaces which come into contact on folding are welded to one another in the marginal portions of the jacket.