Patent ID: 8682221

Claim:
A discharger comprising: a discharging member that is disposed facing a member to be charged and that discharges electricity by applying voltage thereto; and a grid member that is disposed between the discharging member and the member to be charged and regulates electric discharge from the discharging member when voltage is applied between the grid member and the discharging member, the grid member having a plurality of holes with a predetermined shape, the holes extending through the grid member from the discharging member toward the member to be charged, wherein the grid member has a first region, a second region, and a boundary disposed between the first region and the second region and extending in an extending direction of the discharging member, the first region having the holes with the predetermined shape arranged at a first inclination angle inclined at an acute angle with respect to the boundary in the extending direction, the second region having the holes with the predetermined shape arranged at a second inclination angle inclined at an acute angle with respect to the boundary in the extending direction, the second inclination angle being different from the first inclination angle, wherein when the first region is symmetrically projected onto the second region with respect to the boundary, an arrangement pattern of the holes in the first region and an arrangement pattern of the holes in the second region are positionally displaced relative to each other, wherein the extending direction is a one-way direction.