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US 8,272,635 B2Granted
Image forming apparatus
AssigneeOki Data Corporation
InventorTakashi Wakana
Life of this patent
Estimating the term…
Abstract
An image forming apparatus includes a medium placing portion on which a medium is placed, a feed roller rotatably provided in contact with the medium placed on the medium placing portion so as to feed the medium, guide members disposed on both sides of the feed roller for guiding the medium being fed. The guide members are movable in a direction substantially perpendicular to a surface of the medium. A biasing unit is provided for biasing the guide members in a direction toward the medium.
Claims18
An image forming apparatus comprising:
- a medium placing portion on which a medium is placed;
- a feed roller rotatably provided in contact with the medium placed on said medium placing portion so as to feed the medium, said feed roller having a drive shaft;
- guide members disposed on both sides of said feed roller for guiding the medium being fed, said guide members being movable in a direction substantially perpendicular to a surface of the medium;
- a biasing unit that biases said guide members in a direction toward the medium;
- and
- roller-shaft-receiving portions that rotatably support said guide members, said roller-shaft-receiving portions being mounted to said drive shaft of said feed roller so as to be movable in said direction substantially perpendicular to the surface of the medium;
- said guide members being inclined with respect to the surface of the medium, as said guide members are moved in said direction substantially perpendicular to the surface of the medium.
4 more elements
An image forming apparatus comprising:
- a medium placing portion on which a medium is placed;
- a feed roller rotatably provided in contact with the medium placed on said medium placing portion so as to feed the medium;
- guide members disposed on both sides of said feed roller for guiding the medium being fed, said guide members being movable in a direction substantially perpendicular to a surface of the medium;
- a biasing unit that biases said guide members in a direction toward the medium;
- and
- roller-shaft-receiving portions that support said guide members, wherein said roller-shaft-receiving portions are mounted to a drive shaft of said feed roller so as to be movable in said direction substantially perpendicular to the surface of the medium;
- each of said roller-shaft-receiving portions including:
- a main body having a through hole through which said drive shaft penetrates, and
- a bearing portion that rotatably supports said guide member;
- and
- said through hole being elongated in said direction substantially perpendicular to the surface of the medium.
8 more elements
An image forming apparatus comprising:
- a medium placing portion on which a medium is placed;
- a feed roller configured to feed the medium, said feed roller being rotatably provided in contact with the medium placed on said medium placing portion;
- guide members for guiding the medium fed by said feed roller, said guiding members being disposed on both sides of said feed roller and being movable in a direction substantially perpendicular to a surface of the medium;
- a supporting member that supports said guide members so that said guide members are rotated and moved by said medium fed by said feed roller, said guide members being moved in said direction substantially perpendicular to the surface of the medium, said supporting member regulating a movement of said guide members in a feeding direction of the medium;
- and
- a biasing member that biases said guide members in a direction toward the medium;
- said guide members being rotated by the medium fed by said feed roller, and being moved by the medium fed by said feed roller in said direction substantially perpendicular to the surface of the medium, wherein:
- said supporting member has a hole through which said shaft of said feed roller penetrates;
- and
- said hole has an elongated shape so as to allow said guide members to move in said direction substantially perpendicular to the surface of the medium fed by said feed roller.
7 more elements
Dependencies are inferred from the claim text.