Image forming apparatus having transfer bias control function
AssigneeCanon Kabushiki Kaisha
InventorsMahito Yoshioka, Yoji Tomoyuki, Ken Nakagawa, Hikaru Osada
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Abstract
The image forming apparatus has an image bearing member, a transfer member for transferring an image from the image bearing member to a recording material, a fixing device for fixing an image onto the recording material, the fixing device having a heating member and back-up roller for forming a nip in cooperation with the heating member. In the image forming apparatus, the back-up roller has a conductive material containing layer, and a voltage applied to the transfer member when the recording material is a resin sheet is lower than a voltage applied thereto when the recording material is paper.
Claims4
An image forming apparatus comprising:
- an image bearing member;
- a transfer member for transferring an image from said image bearing member to a recording material;
- fixing means for fixing an image onto the recording material, said fixing means including a heating member and back-up roller for forming a nip in cooperation with said heating member;
- wherein said back-up roller has a conductive material containing layer;
- and
- wherein a voltage applied to said transfer member when the recording material is a resin sheet is lower than a voltage applied thereto when the recording material is paper.
Dependencies are inferred from the claim text.