Restoration method for a charging roller, a charging roller restored by the method and a process cartridge installed in the restored charging roller
AssigneeKeytech Co., Ltd.
InventorMasamichi Sato
Life of this patent
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Abstract
A charging roller is constituted of a shaft, a conductive elastic cylinder, and a charging layer. The shaft is integrally covered with the conductive elastic cylinder. Further, the conductive elastic cylinder is integrally covered with the charging layer. The charging roller formed in this way is restored such that it is loosely encased in a seamless charging tube having semi-conductivity.
Claims26
A restoration method for a used charging roller having a conductive shaft, a conductive elastic cylinder integrally formed on the peripheral surface of said conductive shaft, and at least one charging layer integrally provided on the peripheral surface of said conductive elastic cylinder, said method comprising:
- loosely encasing said charging roller in a seamless charging tube having an inner diameter larger than the outer diameter of said charging roller.
A charging roller restored by a method comprising loosely encasing a used charging roller in a seamless charging tube having an inner diameter larger than the outer diameter of said used charging roller, said charging roller having a conductive shaft, a conductive elastic cylinder integrally formed on the peripheral surface of said conductive shaft, and at least one charging layer integrally provided on the peripheral surface of said conductive elastic cylinder.
A process cartridge having at least a photosensitive drum and a charging roller restored by a method comprising loosely encasing a used charging roller in a seamless charging tube having an inner diameter larger than the outer diameter of said used charging roller, said charging roller having a conductive shaft, a conductive elastic cylinder integrally formed on the peripheral surface of said conductive shaft, and at least one charging layer integrally provided on the peripheral surface of said conductive elastic cylinder.
Dependencies are inferred from the claim text.