Abstract: A conveyor belt cleaner and tensioner assembly including a conveyor belt cleaner and a conveyor belt cleaner tensioner. The conveyor belt cleaner includes a scraper blade assembly having a mounting member and a scraper blade. The mounting member includes a base member adapted to be attached to a cross shaft and first and second flanges extending outwardly from the base member forming a first slot therebetween. The scraper blade includes a mounting base having a bore through which the mounting member extends, second and third slots adapted to receive the first and second flanges of the mounting member, and a third flange adapted to be inserted in the first slot of the mounting member such that the scraper blade is rotatably attached to the mounting member. The tensioner includes a support arm rotatably attached to a rotatable tensioning rod and a pivot arm pivotally attached to the support arm which receives the cross shaft. A biasing member extends between the support arm and the pivot arm.

Abstract: A retractor and boot for limiting passage of dirt and foreign material on the retractor belt. The boot includes a plastic housing surrounding the retractor and has an outwardly extending portion forming a channel through which the belt is movable. A pair of scraping edges are located offset along the longitudinal channel axis and are spaced apart relative to each other a distance less than the belt thickness allowing dirt and foreign material to be scraped from the belt as the belt is retracted.

Abstract: A cleaning apparatus that cleans an image bearing member on which a toner image is formed, includes first and second brushes which are rotatable and remove toner by abutment against the image bearing member, wherein the first and second brushes rotate in counter directions, a container for containing the toner removed by the first brush and the second brush, and a rubbing member that rubs both of the first brush and the second brush.

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: The present invention describes a tensioner that automatically increases the effective torque on the support arm over time. The tensioner is comprised of a torsion cam engaging the support arm of the scraper blade assembly, a torsion cable engaging the cam, a tension rod with a spring surrounding the rod secured to the torsion cable. Over time, as the scraper blade wears down and the spring force decreases, the torsion cam is slowly rotated to increase the torque arm of the invention and thereby increase the effective torque on the support arm and compensate for the decrease in spring force. This invention may be adapted for use with any existing scraper blade assembly.

Abstract: A cleaning device, being part of a copying or printing system, for removing residual developer from the surface of an image-delivering member is described. The device comprises a cleaning brush in rolling contact with the surface of the image-delivering member for removing residual developer therefrom. A biased collecting roller is in rolling contact with the revolving brush. The collecting roller is biased such as to attract the residual developer from the cleaning brush and to collect it onto its surface. A trailing cleaning blade has a forward end portion in frictional contact with the collecting roller. The trailing cleaning blade is in contact with the cleaning roller at a contact position where the collecting roller is moving in an upward direction. Also disclosed is a method for removing developer from a surface of an image-delivering member.

Abstract: A scraper blade (1, 1A) for a belt conveyor (8), the scraper consists of, or incorporates, a plurality of resilient fingers (3, 3A) adapted at one end (5) of each finger (3, 3A) to engage the belt surface (6) for scraping purposes and at the other end to be supported in suitable proximity to the belt surface (6) to be scraped, with the individual fingers (3, 3A) capable of deflection upon encountering any projection (10) such as a mound or joint of the belt surface (6).

Abstract: An applicator assembly is provided for depositing various kinds of viscous, spreadable media onto workpieces, such as circuit boards and metal and ceramic substrates, and includes a blade structure having a metal blade portion and a plastic blade portion joined together along one of their respective longitudinal edges. The blade structure is removably attachable to a blade holder and is reversible so that the metal blade can be secured to the blade holder which is mounted to a screen and stencil printer, thus exposing the plastic blade portion for use in screen and stencil printing operations. Alternatively, the blade structure can be secured to the blade holder thereby exposing the metal blade portion for use in screen and stencil printing operations.

Abstract: An apparatus on which scrapers for extensible machine slideway guards are mounted comprises a mounting frame consisting of a plurality of single lengths of section fitted together in pairs where the two lengths meet at one corner; and connecting squares having first contact faces which lie flat against opposing perimetric faces of the lengths of section. The lengths of section have a longitudinal groove in which the scrapers are retained and from which the scrapers extend outwards towards a contiguous slideway. The squares are positioned on the frame close to the corners and comprise second faces that are in contact with the scrapers and that, together with the perimetric faces of the lengths of section, form a gap contiguous to the squares. The ends of two adjacent scrapers are held together firmly and permanently within this gap. The invention also relates to a method for constructing the frame.

Abstract: A belt cleaner is provided in which scraping portions of scrapers are constantly pressed against a surface of a conveyor belt with uniform force throughout all cleaner units. The belt cleaner includes an array of the plurality of the cleaner units arranged in the transverse direction of the conveyor belt, and a pressure generator for combined with the cleaner units. The pressure generator includes respective support sections which are engaged with corresponding working portions of the scrapers of the cleaner units to integrally move with the forward and backward motion of the scrapers with respect to the belt surface, a pressure passage for causing the support sections to communicate with each other, and a fluid completely filled in the pressure passage.

Abstract: A support beam for at least one long working unit, notably of a paper machine or coater, includes several bundled, long profile elements forming in their entirety the support beam.

Abstract: A roller cleaning apparatus of a liquid electrophotographic printer cleans a circumferential surface of a roller where a film is formed due to contact with a photoreceptor medium. The apparatus includes an abrasion member installed to be in contact with the roller for abrading the film using friction. Thus, contamination of the roller can be prevented.

Abstract: A track assembly allows the placement of a pair of web cleaning devices on either side of a paper web moving upwardly through the floor of a press. The track assembly facilitates mounting and rapid removal of web cleaning buffs from beneath a press. A docking plate is installed on the operator side of the press, and a pivotally mounted flip plate is installed on the drive side of the press. A pair of tracks are mounted on either side of the web slot and extend between the docking plate and the flip plate. The tracks inter-fit with the docking plate and are clamped to the flip plate. A removable ramp can be temporarily attached to the drive side of the tracks to allow the cleaning assemblies to be moved up the ramp and positioned on each of the tracks.

Abstract: A developing roller cleaning apparatus for a liquid printer includes a cleaning brush rotating in contact with a developing roller so that developer adhering to an outer circumferential surface of the developing roller can be cleaned, a blade holder, and a blade installed to be bent as the blade contacts the developing roller for removing foreign material back-plated on the developing roller after being cleaned by the cleaning brush, one end of the blade being coupled to the blade holder and the other end thereof contacting the outer circumferential surface of the developing roller. The blade has a blade interference &dgr;=(R−r), a blade leading edge pressure P, and a cleaning angle &thgr;2 satisfying the below conditions of 1.0 mm≲&dgr;≲1.5 mm, 10 g/cm≲P≲20 g/cm, and 5°≲&thgr;2≲20°.

Abstract: A toner-guiding sheet for guiding toner removed from an image carrying member. The sheet includes a free end portion for contacting a surface of the image carrying member, and a fixed portion, fixable on a fixing member, for fixing the toner-guiding sheet in a state in which the free end portion contacts the surface of the image carrying member. The toner-guiding sheet includes a film having a creep-deformation resisting property such that, when the film, fixed on the fixing member so that a distance &bgr; from a central portion in a longitudinal direction of the fixed portion of the sheet to a central portion in a longitudinal direction of the free end portion of the sheet is substantially 3.