Image forming apparatus with bearing members for transfer roller
AssigneeCanon Kabushiki Kaisha
InventorToshihide Shima
Life of this patent
Estimating the term…
Abstract
An image forming apparatus includes an image bearing member, an intermediary transfer belt, a transfer roller, and a metallic roller in contact with the transfer roller to form a current path through which a current flows between itself and the transfer roller. The apparatus further includes a first bearing member to rotatably support the transfer roller, a holding member to movably hold the first bearing member, a first pressing member to press the first bearing member, a second bearing member movably held by the first bearing member and to rotatably support the metallic roller and a second pressing member provided between a bearing surface provided in the first bearing member and the second bearing member to press the second bearing member.
Claims9
An image forming apparatus comprising:
- an image bearing member configured to bear a toner image;
- an intermediary transfer belt onto which the toner image formed on said image bearing member is transferred;
- a transfer roller configured to be rotated with rotation of said intermediary transfer belt in contact with an outer peripheral surface of said intermediary transfer belt, and to form a transfer portion to transfer the toner image borne on said intermediary transfer belt;
- a metallic roller in contact with said transfer roller, configured to be rotated by rotation of said transfer roller and to form a current path through which a current flows between said metallic roller and said transfer roller;
- a first bearing member configured to rotatably support said transfer roller;
- a holding member configured to movably hold said first bearing member;
- a first pressing member configured to press said first bearing member;
- a second bearing member movably held by said first bearing member and configured to rotatably support said metallic roller;
- and
- a second pressing member provided between a bearing surface provided in said first bearing member and said second bearing member, configured to press said second bearing member.
Dependencies are inferred from the claim text.