Sheet feeding unit and image forming apparatus
AssigneeCanon Kabushiki Kaisha
InventorsSatohisa Tateishi, Kozo Inoue
Life of this patent
Estimating the term…
Abstract
A sheet feeding unit includes a supporting member configured to rotatably support a rotary feeding member, a first retaining member configured to push the supporting member upward from the underside to retain the rotary feeding member at a waiting position, and a second retaining member protruding on the underside of the supporting member when the first retaining member retains the supporting member. The retention of the supporting member by the first retaining member is released in association with the mounting of a sheet storage portion in the mounting position, and then the retention of the supporting member by the second retaining member is released.
Claims18
A sheet feeding unit comprising:
- an apparatus body;
- a sheet storage portion configured to be capable of being mounted and drawn out with respect to the apparatus body;
- a rotary feeding member being capable of moving, in accordance with a mounting action of the sheet storage portion, from a waiting position on which the rotary feeding member is apart from a sheet stored in the sheet storage portion to a feed position on which the rotary feeding member is in abutment with an upper surface of the sheet stored in the sheet storage portion to feed the sheet, and being capable of moving, in accordance with a drawing-out action, from the feed position to the waiting position;
- and
- a retaining mechanism configured to retain the rotary feeding member at the waiting position in the sheet storage portion drawn out from the apparatus body, and to position the rotary feeding member at the feed position by releasing the retention of the rotary feeding member in the sheet storage portion mounted at a mounting position in the apparatus body, the retaining mechanism including:
- a first retaining member configured to retain the rotary feeding member at the waiting position in the sheet storage portion drawn out and to release the retention in mid-course of mounting of the sheet storage portion in the apparatus body;
- and
- a second retaining member configured to retain the rotary feeding member at the waiting position in the sheet storage portion drawn out and to release the retention in response to the sheet storage portion mounted at the mounting position.
A sheet feeding unit comprising:
- an apparatus body;
- a sheet storage portion configured to be capable of being mounted or drawn out with respect to the apparatus body;
- a rotary feeding member configured to feed a sheet stored in the sheet storage portion;
- a supporting member configured to rotatably support the rotary feeding member, and configured to be capable of pivoting and moving the rotary feeding member between a waiting position being apart from a sheet stored in the sheet storage portion and a feed position being in abutment with an upper surface of the sheet stored in the sheet storage portion and capable of feeding the sheet;
- a first retaining member configured to push the supporting member upward from the underside to retain the rotary feeding member at the waiting position;
- a first releasing portion provided on the sheet storage portion and configured to release the retention of the supporting member by the first retaining member in mid-course of mounting of the sheet storage portion in the apparatus body;
- a second retaining member protruding on the underside of the supporting member when the first retaining member retains the supporting member;
- and
- a second releasing portion provided on the sheet storage portion, and configured to release the retention of the supporting member by the second retaining member in association with the movement of the sheet storage portion in the mounting direction after the retention of the supporting member by the first retaining member has been released by the first releasing portion.
Dependencies are inferred from the claim text.