Abstract: A contact cleaner roll cleaning system including a frame to support the system relative to a movable web having a first major surface and a second major surface on opposite sides of the web, at least a first rotatable contact cleaner roll supported on the frame disposed for rolling contact with the first major surface, an activatable web transporting device adapted to transport or interrupt the transport of the web past the first rotatable contact cleaner roll, and a first indexing device adapted to roll the first rotatable contact cleaner roll against the first major surface in a first direction while the transport of the web past the first rotatable contact cleaner roll is interrupted. This system is used to clean coated and uncoated webs.

Abstract: A process for cleaning a web having a first major surface and a second major surface on opposite sides of the web, the process including transporting the web while maintaining at least a first rotatable contact cleaner roll in rolling contact with the first major surface to clean the first major surface; interrupting the transporting of the web; rolling the first rotatable contact cleaner roll against the first major surface in at least a first direction while the transport of the web remains interrupted; and rolling the first rotatable contact cleaner roll against the first major surface in the opposite direction while transport of the web remains interrupted.

Abstract: A method and cleaning system to clean ink and coating from contact cleaner rolls. The contact cleaning rolls are located on a turret and as one contact cleaning roll is indexed sequentially out of contact with the imaging surface and into contact with a porous material another contact cleaning roll is indexed into contact with the imaging surface simultaneously. The porous material has a non-alcoholic solvent applied to clean the contact cleaning roll surface upon contact. The components found to create an efficient cleaning solvent for the CCRs include aliphatic ketones and alkylene halides. The aliphatic ketones are alkyl ketones containing from about 1 to 25 carbon atoms (with a preferred range of about 1 to about 10 carbon atoms). The aliphatic ketones contain solvents such as methyl ethyl ketone (i.e. the preferred solvent), methyl ketone, ethyl ketone, propyl ketone and butyl ketone.

Abstract: A contact cleaner roll cleaning system including a frame to support the system relative to a movable web having a first major surface and a second major surface on opposite sides of the web, at least a first rotatable contact cleaner roll supported on the frame disposed for rolling contact with the first major surface, an activatable web transporting device adapted to transport or interrupt the transport of the web past the first rotatable contact cleaner roll, and a first indexing device adapted to roll the first rotatable contact cleaner roll against the first major surface in a first direction while the transport of the web past the first rotatable contact cleaner roll is interrupted This system is used to clean coated and uncoated webs.

Abstract: A composite web comprising a flexible first web having a first major surface, a second major surface, a first end and a second end, and a flexible second web having a first end and a second end, the first end of the first web being joined to the first end of the second web, and the first major surface comprising a tacky contact cleaning surface. This composite web may used to clean devices that contact the web prior to, during and subsequent to application of a coating to the web.

Abstract: A system for cleaning a substrate comprising bringing a contact cleaning web into moving synchronous contact with the surface of a member to be cleaned to clean the surface.

Abstract: An electrophotographic imaging member is disclosed having an imaging surface adapted to accept a negative electrical charge, the electrophotographic imaging member comprising a metal ground plane layer comprising zirconium, a hole blocking layer, a charge generation layer comprising photoconductive particles dispersed in a film forming resin binder, and a hole transport layer, the hole transport layer being substantially non-absorbing in the spectral region at which the charge generation layer generates and injects photogenerated holes but being capable of supporting the injection of photogenerated holes from the charge generation layer and transporting the holes through the charge transport layer.

Abstract: An electrostatographic imaging member comprising at least one imaging layer capable of retaining an electrostatic latent image, a supporting substrate layer having an electrically conductive surface, and an electrically conductive ground strip layer adjacent the electrostatographic imaging layer and in electrical contact with the electrically conductive layer, the electrically conductive ground strip layer comprising a film forming binder, conductive particles and crystalline particles dispersed in the film forming binder and a reaction product of a bi-functional chemical coupling agent with both the film forming binder and the crystalline particles. This imaging member may be employed in an electrostatographic imaging process.

Abstract: An imaging member comprising at least one flexible electrophotographic imaging layer, a flexible supporting substrate layer having an electrically conductive surface and an anti-curl layer, the anti-curl layer comprising a film forming binder, crystalline particles dispersed in the film forming binder and a reaction product of a bi-functional chemical coupling agent with both the film forming binder and the crystalline particles. This imaging member may be employed in an electrostatographic imaging process.

Abstract: Disclosed is a method of treating a paper sheet comprised of a mat of paper making fibers having a uniform coating of starch or modified starch on its surface to improve its performance in electrostatographic copiers. The treatment involves exposing such a sheet having a smooth surface to a direct stream of corona ions. This treatment results in improved adhesion of toner to the sheet when it is used as the receiving member in an electrostatographic copier.

Abstract: Disclosed is a transparency for use in electrostatographic reproduction, particularly in the multi-color mode of such reproduction. The transparency comprises:A) a base of transparent polyester sheet;B) a second layer adherent to the surface of said polyester sheet of a mixture of an acrylic polymer and a copolymer of vinyl acetate and vinyl chloride said second layer having uniformly dispersed therein:I. particulate silica having a particle size range of from about 2 to 70 millimicrons in its longest dimension and being present in an amount of from about 0.25 to 1.5 weight percent of said second layer, andIi. a salt formed from an anion of a carboxylic acid having 1 to 37 carbon atoms or a dimeric fatty acid having 12 to 36 carbon atoms and a cation characterized by the formula: ##STR1## wherein R.sub.

Abstract: Disclosed is a method for the preparation of a seamless belt useful as the photosensitive element in an electrostatographic copying device. The method comprises:A. applying a film or soluble material over a mandrel;B. applying a photosensitive layer over the soluble film and heat treating the photosensitive layer;C. applying a layer of conductive material over the photosensitive layer;D. applying a seamless, heat shrinkable film of a thermoplastic resin over the layer of conductive material and heat shrinking the film to form a layered, endless belt;E. removing the layered belt from the mandrel;F. contacting the belt with a solvent for the soluble film to thereby dissolve the film; andG. turning the belt inside out to provide a belt having layers from the inside out of the seamless polymeric film, the conductive material and the photosensitive layer.