Abstract: An image forming device capable of implementing a change of resolution and capable of forming an image with few linear flaws in a main scanning direction. A recording material is slantedly wound onto a rotary drum at an angle such that, if recording at a predetermined resolution, main scanning lines that are recorded are parallel with both ends of the recording material along a direction of winding onto the drum. Whenever a main scanning line being recorded on the recording material is displaced, relative to a main scanning line that would be recorded at the predetermined resolution, by precisely an amount corresponding to a pre-specified number of pixels, image data is shifted in a direction opposite to the direction of the displacement by the amount corresponding to the pre-specified number of pixels.

Abstract: A multiple resolution imaging system employs an array of imaging devices each tracing a helical pattern on a recording medium. The imaging devices may be activated sequentially along multiple interlaced helical paths to allow a selectable image resolution with reduced imaging artifacts.

Abstract: A magnetic brush development roller assembly for an electrographic printer includes a cylindrical multipole magnet mounted for rotation about a cylindrical axis; and a conductive non-magnetic stationary shell surrounding the multipole magnet. The shell defines an axial slot for receiving an imaging head, and has a region of reduced conductance extending substantially around the circumference of the shell, whereby eddy currents generated by rotation of the magnet within the shell and hence resistive heating and drag on the magnet are reduced.

Abstract: A method and system of image modulation detection of an aircraft exhaust plume by time sequence differentiation is provided. The method comprises the steps of forming two sequential images of the field of view in which an exhaust plume to be detected is located, and forming a differential image from the sequential images showing components of the aircraft's exhaust plume that are modulating at a rate greater than the frame rate of the detection system. The nonmodulating components such as the sky hills, and even the missile body are eliminated from the differential image. Only the plume remains and only the plume is detected. Therefore there is not false alarm note. Each image is formed by a plurality of pixels, wherein each pixel images a portion of the field of view. A value is assigned to each pixel in each of the sequential images that corresponds to one or more characteristics of the pixel.

Abstract: A CPU calculates an optimum inclination angle, an optimum movingspeed (V.sub.X) and an optimum displacement time of delay timing on the basis of input signals commanding resolution, a rotation cycle (T) and the number of beams, supplied from an operating part, and outputs a control signal (V.sub.CONT4) providing the inclination angle to a motor (9). As the result, an LED holder (30) rotates with respect to a central axis (37) at the inclination angle and stops. A zoom lens (24) is adjusted by a control signal (V.sub.CONT3) providing a magnification which is responsive to the resolution. A motor (7) is driven by a control signal (V.sub.CONT2), to drive an exposure head (20) at the moving speed (V.sub.X). A cylinder (36) rotates by a control signal (V.sub.CONT1) in a subscanning direction (Y) at the rotation cycle (T). As the result, an image forming region (34) is inclined with respect to the central axis (37) at the inclination angle.

Abstract: Method and device for reproducing electronically-stored data onto one or more photosensitive layers. The stored data is emitted from a radiation source in the form of one or more parallel beams of electrical signal pulses which are reflected by a moving mirror surface onto the photosensitive layer(s). The invention comprises providing the moving mirror surface in the form of one or more helical walls or elevations present on the surface of a rotating cylinder.

Abstract: An interactive trainer for electronic countermeasures simulation capable of providing displays of in-flight threats and countermeasures responses representative of an actual combat equipment suite. Threat scenarios are stored in computer memory and recalled at a push-button display console. Default parameters may readily be modified by the operator under software control. The aircraft position with respect to selected threats is displayed in real time superposed on the threat parameters. Displays are identical to that provided by the equipment simulated and reflect the true operational status as preset by the operator.