Charge applying member and image forming apparatus with the same

摘要

A charge applying member includes a conductive roller and a shaft. The conductive roller includes a first region in contact with a member to be charged and facing an image forming region of the member to be charged and a second region next to a longitudinal end of the first region and facing a region of the member to be charged outside the image forming region and is configured to apply a charge to the member to be charged. The shaft formed of a metallic material inserted into the conductive roller and configured to be given a voltage from a power supply. A region plated with a metal having a lower ionization tendency than the shaft is formed as a plated region on a surface portion of the shaft corresponding to the first and second regions and a non-plated region is formed on a surface portion of the shaft corresponding to the second region.

主权项

1. A charge applying member configured to apply an electric charge to a member to be charged for use in an image forming apparatus which is configured to develop an electrostatic latent image into a toner image and transfer the toner image to a transfer member, the charge applying member comprising:
a conductive roller which includes a first region held in contact with the member to be charged and facing an image forming region of the member to be charged and a second region disposed next to a longitudinal end of the first region and facing a region of the member to be charged located outside the image forming region and is configured to apply an electric charge to the member to be charged; and a shaft which is formed of a metallic material inserted into the conductive roller and is configured to be given a voltage from a power supply, wherein the conductive roller is fixed on the shaft, and a region plated with a metal having a lower ionization tendency than the shaft is formed as a plated region on a portion of an outer periphery of the shaft corresponding to the first and second regions and a non-plated region is formed on a part of a portion of the outer periphery of the shaft corresponding to the second region fixed to the conductive roller.