Abstract: In a fuser for xerographic printing, stripper fingers remove the print sheet from a fuser roll. The stripper finger having a tip for stripping a lead edge of a sheet from the fuser roll. A roller assembly, positioned adjacent to the stripper finger; for engaging the lead edge of a sheet and lifting the sheet from further contact with the tip after the tip of the stripper finger strips the lead edge of the sheet from the fuser roll. The roller assemlby is removably mounted by using a snap-on mounting structure.

Abstract: An apparatus for non-interactive, dry powder development of electrostatic Images composed of solid areas and fine lines areas on an imageable surface including a housing containing developer material; a first magnetic roll, spaced a first predefined distance from the image, for transporting the developer material from the housing to develop solid areas of the image, the magnetic roll including an magnetic core and a cylindrical sleeve enclosing and rotating about the magnetic core; and a second magnetic roll, spaced a second predefined distance from the image, for transporting the developer material from the housing to develop fine line areas of the image, the magnetic roll including an magnetic core and a cylindrical sleeve enclosing and rotating about the magnetic core.

Abstract: An electrophotographic printing machine of the type in which an electrostatic latent image recorded on a charge retentive surface is developed with toner particles to form a visible image thereof, including; a housing having a supply of toner and developer therein; a donor member for transporting toner from said housing to the development zone; a means for conveying toner to the donor member; means for generating a negative air stream for carrying toner therein; and a filter for removing the toner from the negative air stream, being positioned so that developer impinges on said filter to dislodge material collected in said filter.

Abstract: An apparatus for developing a latent image recorded on an imaging surface, including: a housing defining a reservoir storing a supply of developer material wherein the developer material having predefined triboelectric charge about 20 to 30 microCoulombs/gram. A donor member is mounted partially in the housing and spaced from the imaging surface, for transporting toner on an outer surface of the donor member to a region opposed from the imaging surface. An electrode member is disposed in between the donor member and the imaging surface. A system is provided for loading a region of the doner member with developer material. A charging device ion charges the toner loaded on the region of the donor member to a predefined charge level. A power supply electrically biases the electrode member positioned in close proximity to the imaging member to detach toner from the region of the donor member as to form a toner cloud for developing the latent image.

Abstract: An electrostatic filtering system which allows a steady flow of air into a development housing and prevent toner emission therefrom. The system is used in an apparatus for developing a latent image recorded on a surface includes the housing having a supply of toner therein; a donor member arranged in the housing to transport toner to a development zone adjacent the surface; and electrode for detaching toner from the donor member and produce a toner cloud in the development zone; and an air handling system, associated with the housing, for generating a negative air stream in the housing, the air handling system including the electrostatic filtering system for removing the toner from the negative air stream. The electrostatic filtering system includes a baffle mounted in the housing in the negative air stream and a high voltage DC for applying a bias to the baffle thereby creating an electrostatic field between the baffle and the developer for collecting toner emission.

Abstract: An apparatus for developing a latent image recorded on a surface, including a housing defining a chamber storing a supply of developer material including toner; a toner donor member spaced from the surface and being adapted to transport toner to a region opposed from the surface, the donor member having an electrode member associated therewith; developer material is conveyed in the chamber of the housing onto the donor member; a first AC source for AC biasing the electrode member; and a second AC source for AC biasing the electrode member with an AC rectified waveform, said first and second AC source coacting to detach toner from said donor member as to form a toner cloud for developing the latent image.