Medium feeding apparatus

Patent metadata

Field	Value
Publication number	US-11261042-B2
Application number	US-201916686563-A
Country	US
Kind code	B2
Filing date	Nov 18, 2019
Priority date	Jan 31, 2019
Publication date	Mar 1, 2022
Grant date	Mar 1, 2022

Abstract

A medium feeding apparatus includes: a feed tray on which media M are placed; a draw-out unit that draws out an uppermost medium among the media placed on the feed tray; a hanging member that hangs the feed tray; and a load member that applies, when an amount of the media placed on the feed tray is equal to or smaller than a predetermined amount, a downward load to a portion of the feed tray located on an upstream side in a draw-out direction of the media.

First claim

What is claimed is:

1. A medium feeding apparatus comprising:
a feed tray on which media are placed;
a conveyor that draws out an uppermost medium among the media placed on the feed tray;
a hanger that hangs the feed tray; and
a load structure that applies, when an amount of the media placed on the feed tray is equal to or smaller than a predetermined amount, a downward load to a portion of the feed tray located on an upstream side in a draw-out direction of the media, wherein
the load structure does not apply a load to the portion of the feed tray when the amount of the media placed on the feed tray is greater than the predetermined amount.

2. The medium feeding apparatus of claim 1 , wherein
the hanger is a plurality of lines,
the medium feeding apparatus further comprises a drive that spools the plurality of lines, and
the load structure applies the load to the portion of the feed tray located on the upstream side in the draw-out direction when the feed tray is lifted to a predetermined height or greater as a result of the drive spooling the plurality of lines.

3. The medium feeding apparatus of claim 2 , wherein
the load structure includes a weight positioned to come into contact with the feed tray when the feed tray is lifted to a predetermined height or greater, and
the weight is raised by the feed tray when the feed tray comes into contact with the weight and is further lifted.

4. The medium feeding apparatus of claim 3 , wherein
the load structure includes an elastic structure that comes into contact with the feed tray when the feed tray is lifted to a predetermined height or greater, and
the elastic structure is pressed and compressed by the feed tray when the feed tray comes into contact with the elastic structure and is further lifted.

5. The medium feeding apparatus of claim 4 , further comprising:
a restriction wall that is movable to an open or close position, wherein
the restriction wall restricts, when being located at the close position, a position of an edge portion of the media placed on the feed tray and opens, when being located at the open position, an addition access path to allow media to be added to the feed tray, and
the load structure is provided at the restriction wall.

6. The medium feeding apparatus of claim 3 , further comprising:
a restriction wall that is movable to an open or close position, wherein
the restriction wall restricts, when being located at the close position, a position of an edge portion of the media placed on the feed tray and opens, when being located at the open position, an addition access path to allow media to be added to the feed tray, and
the load structure is provided at the restriction wall.

7. The medium feeding apparatus of claim 2 , wherein
the load structure includes an elastic structure that comes into contact with the feed tray when the feed tray is lifted to a predetermined height or greater, and
the elastic structure is pressed and compressed by the feed tray when the feed tray comes into contact with the elastic structure and is further lifted.

8. The medium feeding apparatus of claim 7 , further comprising:
a restriction wall that is movable to an open or close position, wherein
the restriction wall restricts, when being located at the close position, a position of an edge portion of the media placed on the feed tray and opens, when being located at the open position, an addition access path to allow media to be added to the feed tray, and
the load structure is provided at the restriction wall.

9. The medium feeding apparatus of claim 2 , further comprising:
a restriction wall that is movable to an open or close position, wherein
the restriction wall restricts, when being located at the close position, a position of an edge portion of the media placed on the feed tray and opens, when being located at the open position, an addition access path to allow media to be added to the feed tray, and
the load structure is provided at the restriction wall.

Assignees

• Riso Kagaku Corp

Inventors

• Noguchi Yoshihiro

Classifications

• B65H2801/06

  Office-type machines, e.g. photocopiers · CPC title

• B65H3/06

  Rollers or like rotary separators {(B65H3/42 takes precedence)} · CPC title

• B65H1/10

  comprising weights {(B65H1/022 takes precedence)} · CPC title

• B65H1/18

  controlled by height of pile · CPC title

• B65H1/14

  comprising positively-acting mechanical devices {(B65H1/025 takes precedence)} · CPC title