Patent ID: 8873993
Filing Date: 2014-10-28
Classification: G03B,G03G

Abstract:
1. A developing cartridge comprising: a case including a first sidewall and a second sidewall opposite to the first sidewall; a developing roller disposed between the first sidewall and the second sidewall, the developing roller including a developing roller shaft configured to rotate about a first axis line and a developing roller member configured to carry a developing agent thereon, the developing roller member disposed around the developing roller shaft; an electrode disposed on the first sidewall adjacent to the developing roller shaft, the electrode electrically connected to the developing roller member; and a driven coupling disposed on the second sidewall, the driven coupling configured to rotate about a second axis line, wherein the electrode includes a contact point, the contact point being disposed within a plane of projection when the driven coupling is projected in a direction parallel to the second axis line towards the electrode, wherein the driven coupling includes a first cylindrical portion and a second cylindrical portion concentrically disposed with the first cylindrical portion, wherein the first cylindrical portion is substantially hollow and provided with an inner peripheral surface, wherein the first cylindrical portion includes a driven part which extends radially inward from the inner peripheral surface, wherein the second cylindrical portion includes a gear, and wherein the plane of projection is defined by projecting the first cylindrical portion in the direction parallel to the second axis line towards the electrode.