Sheet binding device and sheet binding method

Patent metadata

Field	Value
Publication number	US-10053326-B2
Application number	US-201615251887-A
Country	US
Kind code	B2
Filing date	Aug 30, 2016
Priority date	Aug 30, 2016
Publication date	Aug 21, 2018
Grant date	Aug 21, 2018

Abstract

A sheet binding device according to an embodiment includes a tape attachment unit and a sheet support unit. The tape attachment unit includes a tap holding unit configured to hold tape that is to be applied to an edge portion of a sheet bundle at a tape attachment region of the edge portion. The sheet support unit holds the sheet bundle in a state where multiple sheets forming the sheet bundle are shifted relative to each other in the edge portion when the tape is applied by the tape attachment unit. The sheet support unit also presses, in a sheet bundle thickness direction, a pressing region of the edge portion different from the tape attachment region so that there is substantially no slack along the edge portion of the sheet bundle between the pressing region and the tape attachment region.

First claim

What is claimed is:

1. A sheet binding device comprising:
a tape attachment unit including a tape holding unit configured to hold tape that is to be applied to an edge portion of a sheet bundle at a tape attachment region of the edge portion;
a sheet shifting unit configured to shift the sheets forming the bundle so that edges of the sheets are shifted relative to each other in the edge portion in a stepwise manner; and
a sheet support unit configured to:
hold the sheet bundle in a state where multiple sheets forming the sheet bundle are shifted relative to each other in the edge portion in the stepwise manner when the tape is applied by the tape attachment unit, and
press, in a sheet bundle thickness direction, a pressing region of the edge portion different from the tape attachment region so that there is substantially no slack along the edge portion of the sheet bundle between the pressing region and the tape attachment region.

2. The device according to claim 1 ,
wherein the sheet support unit includes a tension applying unit having a movable portion configured to move in a sheet bundle width direction when the sheet support unit presses the pressing region of the sheet bundle, so as to apply tension in the sheet bundle width direction to the edge portion of the sheet bundle to remove any slack along the edge portion of the sheet bundle.

3. The device according to claim 2 ,
wherein the tension applying unit includes a pair of tensile members configured to pull the edge portion of the sheet bundle in opposite directions.

4. The device according to claim 2 ,
wherein the tension applying unit includes a pair of rollers configured to rotate to apply tension to the edge portion of the sheet bundle in opposite directions.

5. The device according to claim 1 ,
wherein the sheet support unit includes a pair of pressing portions configured to press the edge portion of the sheet bundle from both sides of the sheet bundle in the sheet bundle thickness direction.

6. The device according to claim 5 ,
wherein the pressing portions each include an elastic member that comes into contact with the sheet bundle.

7. The device according to claim 1 , wherein the sheet shifting unit includes a first roller and a second roller, the first roller having a deformable surface that deforms when pressed against a sheet bundle held between the first roller and the second roller.

8. The device according to claim 1 , wherein the sheet support unit includes a pressing member including a first portion and a second portion that each press a different pressing region on opposite sides of the tape attachment region in a sheet bundle width direction, and a third portion that connects the first portion and the second portion to each other.

9. The device according to claim 1 , further comprising:
an information acquisition unit configured to acquire a thickness of the sheet bundle, wherein if the thickness of the sheet bundle is greater than a predetermined thickness, the sheet support unit does not press the edge portion of the sheet bundle.

Assignees

• Toshiba Kk
• Toshiba Tec Kk

Inventors

• Sasahara Katsuya

Classifications

• B65H2301/515323

  rotary · CPC title

• B65H35/0013

  and applying the article or the web by adhesive to a surface (B65H35/002 takes precedence) · CPC title

• B42C9/0068

  on a single stack of sheets · CPC title

• B65H2301/51122

  peeling layer of material · CPC title

• B65H37/06

  for folding · CPC title