Abstract: An apparatus in which a plurality of liquid images are transferred from a photoconductive member to a copy sheet. The liquid images, which include a liquid carrier having toner particles dispersed therein, are attracted from the photoconductive member to an intermediate belt. Liquid carrier is moved from the intermediate belt and the toner particles are compacted thereon in image configuration. Thereafter, the toner particles are transferred from the intermediate belt to the copy sheet in image configuration.

Abstract: An apparatus which detects when particles being dispensed into a development system have been depleted and provides a display of that condition. The apparatus advances particles from a store thereof to the development system. A detector, associated with the particle advancer, senses the exhaustion of particles being advanced to the development system.

Abstract: An apparatus in which sheets are sorted in selected ones of a plurality of movable trays shiftable relative to one another. One edge of the trays is supported with the remaining edges thereof being unsupported. Successive trays move from one side of a sheet inlet region to the other side thereof with the trays shifting relative to one another to provide wide entry regions at the sheet inlet region and at a sheet securing region.

Abstract: An apparatus in which an electrostatic latent image recorded on a moving photoconductive member is developed. The apparatus includes a developer roller having the exterior surface thereof substantially smooth for transporting developer material into contact with the photoconductive member in the development zone. The developer roller moves at a greater velocity than the photoconductive member. In this way, a portion of the developer material moves at substantially the same velocity as the photoconductive member and another portion of the developer material moves at substantially the same velocity as the developer roller. This induces shearing of the developer material. The developer material moving at a velocity less than the velocity of the developer roller is collected in the region of the entrance to the development zone resulting in an extension of the development zone.

Abstract: A dual mode document handling apparatus in which either individual cut sheet documents or computer-form web documents are advanced to an exposure station of a reproducing machine. Successive cut sheet documents are advanced in a first direction to the exposure station. Successive incremental lengths of a computer form web document are moved to the exposure station in a second direction substantially normal to the first direction. The machine operator may select either computer-form web document feeding or cut sheet document feeding.

Abstract: An apparatus in which a document is printed in at least two different colors. Ions are projected onto the surface of a receiving member to record at least two electrostatic latent images thereon. Each of the electrostatic latent images recorded on the receiving member is developed with different color marking particles. The different color marking particles are transferred substantially simultaneously from the receiving member to the document to print the desired information thereon.

Abstract: An apparatus which measures the electrical potential of the photoconductive surface. A transport advances material closely adjacent to the photoconductive surface. An electrical bias of a selected magnitude and polarity is applied to the transport. The electrical biasing current is sensed and a signal indicative thereof is transmitted. A charger electrically charges the material being moved to the surface by the transport. The charger is electrically biased to a selected magnitude and polarity. The charger electrical biasing current is sensed and a signal indicative thereof transmitted. The signal indicative of the transport electrical biasing current is summed with the signal indicative of the charger electrical biasing current to generate a signal indicative of the electrical potential on the surface. This signal may be used to control the various processing stations within the electrophotographic printing machine.

Abstract: An apparatus which develops a latent image recorded on a flexible member with developer material comprising at least magnetic granules and toner particles. Developer material is transported closely adjacent to a flexible member having the latent image recorded thereon. A radial magnetic field is generated in the development zone to optimize the attraction of the toner particles from the carrier granules to the latent image. A tangential magnetic field is generated at the exit of the development zone to prevent carrier granules from adhering to the flexible member. The magnitude of the tangential magnetic field at the exit of the development zone is greater than the magnitude of the radial magnetic field at the center of the development zone.

Abstract: An apparatus in which a cleaning material is transported into contact with particles adhering to a flexible member in a cleaning zone. The flexible member is maintained at a pre-selected tension. During cleaning, the flexible member is deflected to form an extended cleaning zone.

Abstract: An apparatus in which a threaded fastener is automatically attached to an article. The apparatus positions the threaded fastener in contact with the article and applies a torque thereon. A signal is generated indicating the torque level. The signal is compared to preset limits. Different preset torque limits are set for tapping threads in a hole in the article and securing the fastener thereto.

Abstract: An apparatus in which successive flexible sheets are advanced from a stack. The stack of sheets are held in a substantially vertical orientation. Successive outermost sheets from one side of the stack are fed, in seriatim in a direction substantially opposed to the direction of the gravitational force exerted thereon. The stack of sheets is moved toward a sheet feeder so as to position successive outermost sheets of one side thereof in a feeding relationship therewith. In addition, the stack holder moves from an operative position, in which the sheets are in a sheet feeding relationship, to an inoperative position for loading a new stack therein.

Abstract: An apparatus in which particles of at least two different colors are removed from a photoconductor surface. The cleaning system is controlled to remove particles of one color during one cycle of the apparatus and particles of the other color during another cycle of the apparatus. In this way, the particles of different colors are not intermingled with one another. This permits selective particles to be recycled for subsequent use in the printing machine.

Abstract: An apparatus which develops a latent image by transporting marking particles into contact therewith at least two successive times. An operator adjustable voltage source is coupled to the marking particle transport to electrically bias the transport to at least either a first electrical potential optimizing development of solid areas with the marking particles during the first contact time or to a second electrical potential suppressing development of solid areas. The transporting means is electrically biased to an electrical potential substantially optimizing development of lines with the marking particles during the second contact time.

Abstract: An apparatus in which original documents used in an electrophotographic printing machine are temporarily stored. The apparatus is mounted on the unused space of the printing machine to organize the original documents to be processed therein. A plurality of trays are mounted pivotably on the base of the apparatus. The trays pivot from a nested position wherein they occupy a minimum amount of space on the printing machine to a substantially vertical position defining a plurality of bins for temporarily storing the original documents therein.

Abstract: An apparatus in which a latent image is developed with marking particles. The marking particles are transported to the latent image. As the marking particles are being moved to the latent image, they are electrically charged. A supply of marking particles is stored and dispensed onto the particle transport. Wrongly charged particles returned to the particle dispenser are electrically discharged.

Abstract: An apparatus which develops an electrostatic latent image recorded on a photoconductive member employed in an electrophotographic printing machine having a finite, usable life. The apparatus employs a developer material which ages during the life of the electrophotographic printing machine. A continuous supply of carrier granules is furnished to the developer material. The addition of these carrier granules extends the useful life of the developer material so as to correspond to at least the useful life of the electrophotographic printing machine.

Abstract: An apparatus in which a developer roller transports developer material into contact with a flexible member in a development zone so as to develop a latent image recorded thereon. The developer material being transported through the development zone on the developer roller is magnetically agitated to improve development of the latent image.

Abstract: An apparatus in which a latent image recorded on an image receiving member is developed with developer material. A conductive developer roller transports the developer material into a development zone for depositing developer material onto the latent image recorded on the image receiving member. The developer material is attracted from the developer roller to an insulating belt in a pre-development zone. The insulating belt inductively charges the developer material which is subsequently transferred back to the developer roller. The inductively charged developer material is then advanced to the development zone for developing the latent image recorded on the image receiving member.

Abstract: An apparatus in which the presence of toner particles is detected. The apparatus includes a member adapted to be charged by the toner particles in contact therewith. A signal is transmitted in response to the member being charged to indicate the presence of toner particles in contact with the member.

Abstract: A tray adapted to support a stack of sheet material thereon. The tray is adjustable to accommodate stacks of sheet material of different widths and lengths. The rear registration and the side registration surfaces are moved in unison with one another so as to engage the rear and side edges of the stack of sheet material respectively.