摘要:
In color printing with a color registration system for the registration of plural color images on an image bearing surface, such as a photoreceptor belt of a color printer, chevron shaped registration marks are imaged on the image bearing surface, which registration marks correspond to the color images and are sensed by a registration marks sensor as the image bearing surface moves in its process direction. The registration marks sensor has chevron shaped optical sensing areas provided by a matching pair of spaced apart elongated bi-cell detectors in a generally chevron shaped pattern. Each of these spaced apart elongated bi-cell detectors has a parallelogram shaped optical sensing area. That parallelogram shaped sensing area is defined by elongated parallelogram sides extending at the same angle as one leg of the chevron shaped registration marks, and parallelogram ends which are parallel to the process direction, so as to provide higher color registration accuracy.
摘要:
A device for transferring electrical charge between a first element and a second element is provided. The elements have relative rotational motion therebetween. The device has a body including a multiplicity of electrically conductive fibers. A substantial portion of the fibers extend in a substantially parallel direction, parallel to a first axis. The body includes a first contact area. The body defines an aperture therein. The body further includes a second contact area on the periphery of the aperture spaced from the first contact area. The first contact area is for contact with the first element and the second contact area is for contact with the second element.
摘要:
A system for transporting a sheet of material including an actuator, a position sensing system, and a tactile sensor system. The actuator imparts a known force to a sheet, moving it through to the position sensing system, which measures the sheet velocity at various points. Afterward, the sheet moves through the tactile sensor system, which determines the coefficient of friction of the sheet. Given these quantities, a controller can determine the mass of the sheet, which can be used alter the performance of the sheet transport system.
摘要:
A system for measuring the mass of a sheet of material including an actuator, a position sensing system, and a tactile sensor system. The actuator imparts a known force to a sheet, moving it through to the position sensing system, which measures the sheet velocity at various points. Afterward, the sheet moves through the tactile sensor system, which determines the coefficient of friction of the sheet. Given these quantities, a controller can determine the mass of the sheet, which can be used alter the performance of a reproductive machine. A second embodiment of the mass measuring system includes an actuator, a position sensing system, and a subsystem for eliminating friction. The actuator applies a force to a sheet to move it into and through the subsystem. The position sensing system incorporated in the subsystem senses the acceleration of the sheet. Given this quantity, a controller can determine the mass of the sheet.
摘要:
A contacting electrostatic voltmeter suitable for sampling positive or negative potentials on an electrostatically charged surface. The electrostatic voltmeter includes a selectively controllable actuation mechanism that enables the use of a contacting electrostatic voltmeter to sample the surface of an electrostatically charged member, moving relative thereto, within a predetermined space. The invention finds particular use in a printing system, where it enables charge monitoring during printing yet avoids disturbance to charged latent image areas on the imaging member.
摘要:
There is disclosed an electrical component for making electrical contact with another component comprising a composite member including a plurality of electrically conductive, nonmetallic fibers in an electrically conductive metallic matrix wherein said composite member has an axial direction and a DC volume resistivity of less than about 100 micro ohm cm, said plurality of conductive fibers being oriented in said matrix in a direction substantially parallel to each other and to the axial direction of said member and said fibers being continuous from one end of said member to the other end to provide a plurality of electrical contact points at each end of said member, at least one end of said member having a brush-like structure of said plurality of fibers wherein said brush-like structure is at least substantially free of the metallic matrix, thereby providing a distributed filament contact wherein the terminating ends of the fibers in the brush-like structure define an electrically contacting surface.
摘要:
Electronic switches and sensors have pultruded contact members. A switch includes first and second contact members, at least one of which including a pultruded contact member having an insulating body and a plurality of conductive fibers carried within the insulating body. The pultruded contact member is fibrillated at least at one end thereof to expose the conductive fibers for establishing electrical contact when brought into physical contact with the other of the first and second contact members. A sensor for detecting the presence of an article in a detection zone includes a contact at one side of the detection zone, and a pultrusion including a plurality of electrically conductive fibers and a host material carrying the plurality of fibers, supported at another end of the detection zone. One end of the pultrusion has a fibrillated end portion extending across the detection zone in electrical connection with the contact that is displaced by the article when the article is present in the detection zone to disconnect the electrical connection. The sensor is particularly well adapted to sense a sheet of paper or the like, for example, in an electrostatographic reproducing machine, and can be connected to a source of electrical potential so that the conductive fibers serve to discharge any static charges existing on the sheet of paper.