Abstract: A document transport system for a copier has associated with it a platen having anti-static properties. A platen glass surface is coated with an optically transmissive grounded coating which serves to dissipate electrostatic fields which occur as a consequence of the movement of the document across the platen surface. In one embodiment wherein the transport system includes rollers which frictionally engage and move the document across the platen, the conductive coating is omitted in areas generally underlying the rollers.

Abstract: Control apparatus for a corona discharge device to be utilized in a xerographic reproduction machine. The control is characterized by utilizing the shield or coronode voltage to derive signals which can be used for maintaining the photoconductive surface of the machine at a predetermined voltage level. The voltage level on the shield or coronode is measured twice, once with the surface in its conducting state and with the surface in its non-conducting state. The difference between the two voltages is compared to a reference voltage to generate an output signal for controlling the voltage applied to either the shield or coronode depending upon which is being used.

Abstract: Method and apparatus for altering the static electric charges of sheets of dielectric material arranged in a stack in which the stack is subjected to a high intensity electrostatic gradient. Interlock and shorting structures are utilized for preventing injury to users due to electrical shock.

Abstract: A system for reliably feeding individual sheets of recording media is disclosed especially as such system is related to media suitable for electrosensitive recording such as in a facsimile or other device.

Abstract: A charged body is electrically discharged by the use of AC corona discharge, whereafter the AC corona discharge current is gradually attenuated before the discharging is stopped, and then the corona discharge is stopped.

Abstract: A magnetic tape cassette comprises a shaped sheet the face thereof contacting the magnetic tape includes lubricating material treated portions located at the top of ridges formed by deforming the sheet.

Abstract: A process for reproducing graphic information wherein a magnetic image is formed in a premagnetized layer of acicular chromium dioxide by heating the chromium dioxide selectively to above its Curie point. Ferromagnetic toner particles are then applied uniformly to the chromium dioxide layer, so as to adhere only in the magnetized areas. The toner particles are electrostatically transferred to a substrate and fused into position. Alternating current coronas or other static neutralizing devices are used to neutralize unwanted charges on toner particles which would otherwise cause fuzzy images and unwanted background markings on the final copies.

Abstract: A high-voltage power source for suppling a high voltage to corona dischargers used with an electrophotographic apparatus, wherein plural connectors to be connected to the plugs of said corona dischargers are integrally mounted on a casing of a transformer and are connected to the output terminals of said transformer without high-voltage cable thereby eliminating the noise conventionally generated by such high-voltage cable and simultaneously achieving economization of the space and cost required for said cable and the conventionally used separate connectors.

Abstract: Charged neutralizer apparatus including a charge neutralizing brush which is formed thin conductive wires brought into proximity with a charged body to cause a discharge thereof is disclosed herein. A spacer member is provided to prevent direct contact between the thin conductive wires and the charged body and defines a narrow clearance therebetween. The brush is disposed in a movable manner and adapted to move under its own weight or by biasing means, in following relationship with the changed body to thus enable an elimination of charge at any position of the charged body.

Abstract: This specification discloses a copying apparatus having an original feeding mechanism for feeding originals by moving the originals on the surface of an original supporting member, characterized in that discharging means acts on the original supporting member from that side thereof opposite to the original supporting side of the original supporting member to discharge the original supporting surface.

Abstract: Opposite sides of film slides are efficiently cleaned by employing voltage energized needle tips to distribute ions into gas streams that flow within a venturi-shaped zone through which the film slides are passed.

Abstract: Grounded grid static discharge apparatus having a pair of spaced insulator blocks mounted in a shell. A grounded grid is fixed to the shell located adjacent to a sheet travel path. The insulator blocks have openings which serve as radial locators for a high voltage corona wire, extending between the blocks. A contact member, housed within one of the blocks, captures one end of the corona wire and positions the corona wire in relation to the respective opening of the block. A high voltage electrical coupling is made to the corona wire by inserting a male connector from a high voltage source into direct engagement with the contact member to complete the coupling with a minimum of electrical interfaces. The other insulator block has an end cap for capturing the opposite end of the corona wire. The end cap is urged in a direction to provide tension in the corona wire to maintain the wire in the radial locators for proper spatial positioning of the wire with respect to the shell and grid.

Abstract: In a first embodiment a stop having a plurality of ports is connected to and covers an end of a rectangular sleeve. In a region near the stop a narrow wall of the sleeve also has a plurality of ports. Near the other end of the sleeve the other narrow wall includes a plurality of ports communicating with the space inside the sleeve and a chamber of a grounded metallic manifold coupled to the sleeve. Insulators support in the chamber an electrode connected to a voltage source and a pump forces air past the electrode and into the sleeve to provide therein an ionized fluid. The fluid exits through the ports in said narrow wall and stop and if a charged sheet is in the sleeve it is neutralized and registered against said narrow wall and stop. In a second embodiment, similar to the first, the ports in the narrow wall and sleeve communicate with the chamber of a second manifold coupled to the sleeve.

Abstract: A method of and apparatus for removing electrostatic charges from an insulating foil by moving the foil between first and second gas plasma generators including a novel arrangement of electrodes that produce uniform glow discharges in air adjacent the electrodes and the foil.