Abstract: In a method for determining the roll attitude of a rolling flying object having a radio receiver, in particular for guiding a ballistic flying projectile/rocket having roll compensation, the aim is to determine a line of sight between a transmitting source and the antenna and to determine the roll attitude therefrom.

Abstract: The invention concerns a method of determining the position of roll of a rolling flying object, in particular for the guiding of a ballistically flying projectile/rocket with roll equalization. A field strength of the earth's magnetic field, in particular a field-strength vector, is used to determine the position of roll of the flying object.

Abstract: A method is proposed for fabricating components of an ink droplet generator for generating a sequence of charged, detected and deflected ink droplets for an ink jet printer, as is proposed an ink droplet generator fabricated thereby. The method which is based upon multi-layer technology involves forming the charging electrodes and the detection electrodes by removing unnecessary metal coating from a support element metallically coated on at least one side of the support element and forming the deflection electrodes by removing unnecessary metal coating from a polyimide foil coated on at least one side thereof. The polyimide foil is mounted on a substrate constructed as a support element. The arrangement defining the ink droplet generator comprises a first module formed from both board or panel-like support elements and a second module formed from both board or panel-like support elements.

Abstract: A method and apparatus for monitoring and regulating the ink droplet velocity in the ink supply system of an ink jet printer is proposed which essentially comprises an ink jet propulsion member, a charging electrode, a charge detector, a deflection electrode and an ink droplet catch gutter. In the method, during a non-writing or non-recording dead-time interval (PHASING), a first relatively small number of ink droplets is relatively weakly charged and a second, nearly twice as great, number of droplets remains uncharged. A signal is detected which is nearly proportional to the droplet velocity of the first, weakly charged, ink droplets and is employed for monitoring and regulating the ink droplet velocity or for pressure-dependently regulating an ink jet velocity or both.

Abstract: A recorder contains a rotatably mounted drum which is structured as a vacuum or negative pressure-hollow cylinder. At the cylindrical circumferential surface of the drum body there is arranged at least one clamping or supporting region for the retention of a sheet-shaped record carrier or medium, each clamping or supporting region containing a closed channel system. Each individual channel system comprises a number of channels of a first group of channels which are arranged in the lengthwise axial direction of the drum and essentially parallel to a clamping portion and a number of channels of a second group of channels arranged essentially transversely with respect to the first group of channels. In order to obtain a stable smooth contact or support of the record carrier or medium at the drum there is provided in the last channel of the related clamping or supporting region, which is arranged parallel to the clamping portion, an opening which penetrates through the drum body.