Contact brush charging
Patent 4761709 Issued on August 2, 1988. Estimated Expiration Date: 
November 10, 2006. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
November 10, 2006. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 2774921 2987660 3235323 3484183 3691993 3757164 3841892 3877417 3904929 Process for forming carbonaceous fibers InventorsAssigneeApplicationNo. 06/928600 filed on 11/10/1986US Classes:361/225, ELECTRIC CHARGING OF OBJECTS OR MATERIALS399/175BrushExaminersPrimary: Grimley, Arthur T.Assistant: Pendegrass, J. International ClassesG03G 21/06 (20060101)G03G 15/02 (20060101) AbstractA contact brush charging device together with a method for charging an insulating layer are provided wherein the charging brush comprises a plurality of resiliently, flexible thin fibers having an electrical resistivity of from about 102 ohms-cm to about 106 ohms-cm and being substantially resistivity stable to changes in relative humidity and temperature. In a preferred embodiment the plurality of fibers are arranged in a uniform distribution of fibers along the length of the brush and comprise partially carbonized polyacrylonitrile fibers having an electrical resistivity from about 103 ohms-cm to about 105 ohms-cm and being substantially homogeneous in composition.Other References
| |
