Abstract: Light Emitting Diodes (LED) arrays are made by first applying LED monoliths to a metallic pallet, such as a copper pallet, and then securing the pallets to a substrate in a preferred geometrical arrangement. Because copper is so readily machinable, one is able to produce sizes as required for the geometry of an LED array and because of the rigidity, the problem of the fragile modules is removed since they are part of the pallets.

Abstract: Method and apparatus for xerographic printing wherein a magnetic brush unit is used to both apply toner to an image on a photoconductive surface and clean the surface in the same cycle. A reverse imaging process is used in combination with an electronically controlled exposure station. A cleaner or separate cleaning station is not required in the inventive method and apparatus described herein.

Abstract: This invention relates to circuitry for non-impact printers that use light emitting diodes (LED's) to produce an image on a photoconductor and for controlling the output of each LED of a light emitting diode array that is part of the printer. A binary weighted duty cycle control is used to obtain substantial uniformity in the light emitted from each LED. The binary cycle is time related so that through use of a four-bit code, sixteen outputs are available which yield sixteen periods during which an LED may be enabled.

Abstract: A non-impact printer in which a source of image information such as a computer, facsimile machine, word processor or the like provides image information to an image transfer device which transfers the image to a moving image receiving surface for printing of the image as hard copy. A motion encoder senses the motion of the image receiving surface and creates a digital timing signal representative of the motion. A logic circuit selectively delays the input of the image information signal to the image transfer device in response to digital timing signal to synchronize motion of the image receiving surface with transfer of the image to the image receiving surface.

Abstract: A cleaning apparatus for use in an electrostatographic reproducing machine to remove magnetic toner particles from a moving surface such as a photoreceptor or transfer belt is disclosed. The cleaning apparatus comprises a frame member which includes means for containing toner particles therein; scraping means positioned in contiguous relation to said moving surface whereby toner particles adhering to the surface are removed therefrom; and magnetic means positioned on the frame opposite to the location of the scraping means for attracting the magnetic toner particles away from the moving surface and into the container means.

Abstract: A fusing apparatus comprises a heated roll fuser member; an endless belt which engages a portion of the peripheral surface of the heated roll fuser member to form an area through which substrates carrying toner images thereon move; first charging apparatus for applying an electrostatic charge to the belt opposite in polarity to the charge on the toner particles, the charging apparatus being positioned adjacent the belt so as to charge the portion of the belt supporting the substrate prior to it passing between the heated fuser roll and the belt; and second charging apparatus for applying an electrostatic charge on the fuser roll.

Abstract: In a first embodiment a still picture video program composing and playback system is described whereby a plurality of still picture programs can be recorded on a common video recording such as a video tape. A composing operation involves the assembly of audio narration for the programs on separate tracks with cue signals which signify successively different picture displays being recorded on a separate track. The composing of these audio programs and still pictures on a common video tape is obtained with control logic responsive to played back cue signals. The recording of still pictures is obtained with a slide projector and television camera, both of which are synchronized by the control logic to record video frames and cue signals on the video tape. In a second embodiment still pictures and a motion sequence for different video programs are interleaved and recorded on a common medium.

Abstract: A facsimile receiver reproduces documents at remote locations automatically while unattended. The receiver includes a telephone coupler for receiving data over a telephone line, a scan converter, a single-stylus scanner, and automatic paper feed, extraction and stacking mechanisms so that a large number of documents may be reproduced and stacked in sequence in the absence of an operator.

Abstract: Paper feeding and handling apparatus, especially for a facsimile receiver, including a cradle for supporting a roll of paper and for raising and lowering it to permit handling of the roll. Roll and guide means lead the paper from the supply roll to a writing station which also includes sheet-cutting means. A sheet-handling tray is disposed to receive the written and cut sheets, and various mechanical means are provided to feed and support the cut sheets.