US 2012/0257905 A1Published application

Discharger and image forming apparatus

AssigneeFuji Xerox Co., Ltd.

InventorsYuzo ICHIKAWA, Tomoya ICHIKAWA

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Abstract

A discharger includes a discharging member that faces a member to be charged and 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. The grid member has holes with a predetermined shape that extend therethrough from the discharging member toward the member to be charged, and has a first region with the holes arranged at a first inclination angle, a second region with the holes arranged at a second inclination angle, and a boundary between the first and second regions that extends in the direction of the discharging member. When the first region is symmetrically projected onto the second region with respect to the boundary, arrangement patterns of the holes in the first and second regions are positionally displaced relative to each other.

Claims18

Dependent claims

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 in which the holes with the predetermined shape are arranged at a first inclination angle inclined relative to the extending direction of the discharging member, a second region in which the holes with the predetermined shape are arranged at a second inclination angle that is different from the first inclination angle, and a boundary disposed between the first region and the second region and extending in an extending direction of the discharging member, and 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.

1 more element

A discharger comprising:

a discharging member that is disposed facing a member to be charged and 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 in which the holes are arranged at a first inclination angle inclined relative to an extending direction of the discharging member, a second region in which the holes are arranged at a second inclination angle that is different from the first inclination angle, and a boundary disposed between the first region and the second region and extending in the extending direction of the discharging member, and wherein an arrangement pattern of the holes in the first region and an arrangement pattern of the holes in the second region are asymmetric with respect to the boundary as a symmetry axis.

1 more element

Dependencies are inferred from the claim text.