Sheet post-processing apparatus

Patent metadata

Field	Value
Publication number	US-11667491-B2
Application number	US-202217728269-A
Country	US
Kind code	B2
Filing date	Apr 25, 2022
Priority date	Apr 28, 2021
Publication date	Jun 6, 2023
Grant date	Jun 6, 2023

Abstract

The present invention is to enable folding processing to be applied to also large sheet sizes without upsizing the entire apparatus, in the sheet post-processing apparatus for performing the folding processing and binding processing on sheets, a sheet post-processing apparatus is provided with a binding processing section for performing binding processing using a binding needle on a sheet bunch inside a storage section, first folding roller pair for nipping a sheet P inside the storage section in a first position to form a first fold portion, a receiving section for receiving the sheet with the first fold portion formed fed out of the first folding roller pair, and second folding roller pair for nipping the sheet inside the receiving section in a second position to form a second fold portion.

First claim

The invention claimed is:

1. A sheet post-processing apparatus comprising:
a conveying section adapted to convey a sheet in a predetermined conveyance direction;
a storage section adapted to store sheets conveyed by the conveying section;
a binding section adapted to apply binding processing using a binding needle to a sheet bunch formed from a plurality of sheets stored in the storage section;
a needle storage section detachably attached to the binding section to store the binding needle supplied to the binding section;
a first folding roller pair adapted to nip a sheet or the sheet bunch stored in the storage section in a predetermined first position in the conveyance direction, and thereby form a first fold portion in the first position;
a receiving section adapted to receive the sheet or the sheet bunch with the first fold portion formed by the first folding roller pair; and
a second folding roller pair adapted to nip the sheet or the sheet bunch with the first fold portion formed inside the receiving section in a second position different from the first position, and thereby form a second fold portion in the second position,
wherein the first folding roller pair and the second folding roller pair are disposed on a same side as the needle storage section attached to the binding section with respect to the storage section, below the needle storage section, in a thickness direction of the sheet or the sheet bunch stored in the storage section, and
the receiving section is disposed above the first folding roller pair and the second folding roller pair so as to sandwich the needle storage section between the storage section and the receiving section, in a position crossing a locus of the needle storage section being removed from the binding section to add the binding needle.

2. The sheet post-processing apparatus according to claim 1 , further comprising:
a processing unit adapted to store the conveying section, the storage section, the binding section, the needle storage section, the first folding roller pair, the second folding roller pair, and the receiving section,

wherein the processing unit is able to shift between an inside position positioned inside the sheet post-processing apparatus and an outside position positioned outside the sheet post-processing apparatus, and a portion of the receiving section crossing the locus of the needle storage section being removed from the binding section is configured to be able to open outside the sheet post-processing apparatus when the processing unit is in the outside position.

3. The sheet post-processing apparatus according to claim 2 , wherein the receiving section includes a pair of first and second receiving guide members opposed so as to define a path for contacting the sheet or the sheet bunch fed out of the first folding roller pair to guide,
the first receiving guide member positioned on the storage section side of the path includes a notch portion in the portion crossing the locus of the needle storage section being removed from the binding section, and
when the processing unit is in the outside position, the second receiving guide member positioned on a side opposite to the first receiving guide member with the path therebetween is able to shift between a guide position for contacting the sheet or the sheet bunch to guide and a retract position which does not cross the locus of the needle storage section being removed from the binding section so as not to contact the sheet or the sheet bunch.

4. The sheet post-processing apparatus according to claim 2 , wherein the receiving section includes a pair of first and second receiving guide members opposed so as to define a path for contacting the sheet or the sheet bunch fed out of the first folding roller pair to guide, and
when the processing unit is in the outside position, the first and second receiving guide members are detachable so as to open the portion crossing the locus of the needle storage section being removed from the binding section, outside the sheet post-processing section.

5. The sheet post-processing apparatus according to claim 2 , wherein the receiving section includes a pair of first and second receiving guide members opposed so as to define a path for contacting the sheet or the sheet bunch fed out of the first folding roller pair to guide, and
the first and second receiving guide members include notch portions in the portion crossing the locus of the needle storage section being removed from the binding section.

6. The sheet post-processing apparatus according to claim 2 , wherein the receiving section includes a pair of first and second receiving guide members opposed so as to define a path for guiding the sheet or the sheet bunch fed out of the first folding roller pair, and
when the processing unit is in the outside position, the first and second receiving guide members are separated from the processing unit and are positioned inside the sheet post-processing apparatus, so as to open the locus of the needle storage section being removed from the binding section toward outside to add the binding needle.

Assignees

• Matsuki Satoru
• Canon Finetech Nisca Inc

Inventors

• Matsuki Satoru

Classifications

• B65H37/04 Primary

  for securing together articles or webs, e.g. by adhesive, stitching or stapling (adhering replacement to expiring web during change of web roll B65H19/18) · CPC title

• B65H2301/17

  Selective folding mode · CPC title

• B65H45/18

  Oscillating or reciprocating blade folders (carried on rotary members B65H45/16) · CPC title

• B65H37/06 Primary

  for folding · CPC title

• B65H2404/632

  Wedge member · CPC title