Abstract: This paper feeding mechanism comprises a first spring for biasing a stack of paper against a belt for driving one or two sheets of paper from the stack toward a gap which is slightly larger than the width of one sheet of paper, and a second spring for flattening the selected sheet or sheets against the belt just prior to entering the gap. The belt is held solidly in position by a backing Teflon block to form one side of the gap, and a sharp edge that is positionally adjustable forms the other side. The sharp edge is rounded slightly to compensate for the possibility of mechanical inaccuracies, and the second spring presses the paper against the belt just prior to the knife edge for more reliable operation with stiff paper.

Abstract: This invention relates to a right angle light emitting diode assembly with snap-in feature wherein an insulating body, generally in the shape of a rectangular parallelepiped, no larger than a finger nail, holds a light emitting diode in the insulating body at right angles to the surface of a printed wiring board, the insulating body being shaped such that robotic equipment can be used to insert the diode assembly cheaply and efficiently onto said board. The insulating body has front and back generally parallel surfaces, top and bottom generally parallel surfaces, and first and second generally parallel side surfaces, the respective surfaces having grooves and protuberances to allow the light emitting diode (LED) to be fixedly mounted in said body and the body to be inserted into a printed wiring board which can then be wave soldered without deleterious effects on the LED or supporting body.

Abstract: In a phase reversed bit stream, to increase the power in the fundamental frequency and reduce harmonics, each group of positive and negative ON bits is stretched by one pulse width. A stretch of slightly less than one pulse width may also be used to prevent glitches. This invention is useful in an optical raster output scanner where a greater amount of power in the fundamental frequency will result in a grater image intensity for the same data rate.