Patent ID: 7395007
Filing Date: 2008-07-01
Classification: G03G

Abstract:
1. A cartridge for an image forming apparatus, comprising: a charge roller to which a predetermined voltage is applied; a photosensitive drum charged by the charge roller by rotating in contact with the charging roller; a casing to house the charge roller and the photosensitive drum; an electronic element positioned at a predetermined distance from a contact line between the charging roller and the photosensitive drum, for wireless communications; an attaching medium interposed between the electronic element and the casing to adjust a rotating angle of the electronic element; and a shielding member made of a metal interposed between the contact line and the electronic element to form a shielding area to shield electromagnetic waves generated from the contact line between the charging roller and the photosensitive drum, wherein the electronic element is disposed on a surface of the casing within the shielding area, except for boundary portions of the shielding area to avoid an influence of the electromagnetic waves at boundary surfaces of the shielding area, including any reflection, scattering and diffraction of the electromagnetic waves.