Sheet processing device and image forming device provided with the same

Patent metadata

Field	Value
Publication number	US-10331071-B2
Application number	US-201715730259-A
Country	US
Kind code	B2
Filing date	Oct 11, 2017
Priority date	Apr 23, 2015
Publication date	Jun 25, 2019
Grant date	Jun 25, 2019

Abstract

A sheet processing device that bonds sheets to one another and then folds a resultant sheet bundle. The sheet processing device includes a stacker section that sequentially stores sheets moved thereto, an adhesive-binding unit that applies an adhesive onto sheets sequentially stored in the stacker section one by one in a sheet moving direction to bond the sheets to one another, a moving member that moves the sheets to an application position of the adhesive-binding unit, and a folding processing section that folds a sheet bundle formed by the bonded sheets at a predetermined folding position. When the number of sheets to be bonded by the adhesive-binding unit applying the adhesive onto the sheets exceeds a predetermined number, the adhesive is applied at two positions separated from each other across the folding position.

First claim

What is claimed is:

1. A sheet processing device that bonds sheets to one another and then folds a resultant sheet bundle, comprising:
a stacker section that sequentially stores sheets moved thereto;
an adhesive-binding unit that applies an adhesive onto sheets sequentially stored in the stacker section one by one in a sheet moving direction to bond the sheets to one another;
a moving member that moves the sheets to an application position of the adhesive-binding unit; and
a folding processing section that folds a sheet bundle formed by the bonded sheets at a folding position, wherein
when the number of sheets to be bonded by the adhesive-binding unit applying the adhesive onto the sheets exceeds a predetermined number, the adhesive is applied at two positions separated from each other across the folding position.

2. The sheet processing device according to claim 1 , wherein
the folding processing section includes a folding roller that folds the sheet bundle and a folding blade that pushes the sheet bundle into the folding roller, and
the sheets carried in between the folding roller and the folding blade are applied with the adhesive by the adhesive-binding unit while being sequentially stacked from a folding blade side toward a folding roller side.

3. The sheet processing device according to claim 2 , wherein
the adhesive-binding unit increases an application area of the adhesive onto the sheet as an application target sheet approaches the folding roller side, and
when the number of sheets to be bonded exceeds a predetermined number, the adhesive is applied at two positions separated from each other across the folding position.

4. The sheet processing device according to claim 3 , wherein
the adhesive-binding unit includes a transfer tape having an adhesive on a tape base material and presses, at a tape transfer position, the transfer tape to transfer the adhesive onto the sheet in application of the adhesive onto the sheet and thereby bonds a plurality of sheets forming the sheet bundle to one another.

5. The sheet processing device according to claim 4 , wherein
the moving member includes a gripper member that grips the sheet and is configured to be repeatedly stopped and moved while gripping the sheet so as to allow an area of the adhesive to be applied by the adhesive-binding unit at the tape transfer position to become wider as the number of stacked sheets is increased, and
the adhesive-binding unit is activated during the stop of the sheet to transfer the transfer tape onto the sheet.

6. The sheet processing device according to claim 5 , wherein
the adhesive-binding unit has a plurality of tape holders arranged in a sheet width direction and each supporting the transfer tape, and
the tape holders are sequentially pressed against the sheet to transfer the adhesive onto the sheet.

7. A sheet processing device that bonds sheets to one another and then folds a resultant sheet bundle, comprising:
a stacker section that sequentially stores sheets moved thereto;
an adhesive-binding unit that applies an adhesive onto sheets sequentially stored in the stacker section one by one in a sheet moving direction to bond the sheets to one another;
a moving member that moves the sheets to an application position of the adhesive-binding unit in the stacker section;
a folding blade that pushes an adhesive applied position of a sheet bundle into a folding roller that folds the sheet bundle; and
a control member that can set an area variable mode in which an area over which the adhesive is applied varies with an increase in the number of sheets to be bonded by the adhesive-binding unit and an area fixed mode in which the area over which the adhesive is applied is made substantially constant even with the increase in the number of sheets to be bonded.

8. The sheet processing device according to claim 7 , wherein
the area variable mode is a mode in which the bonding area of the sheets to be applied with the adhesive at a position between the folding roller and the folding blade is made wider stepwise every plurality of sheets.

9. The sheet processing device according to claim 8 , wherein
the adhesive-binding unit includes a transfer tape having an adhesive on a tape base material and presses, at a tape transfer position, the transfer tape to transfer the adhesive onto the sheet in application of the adhesive onto the sheet, thereby bonding a plurality of sheets forming the sheet bundle to one another.

10. The sheet processing device according to claim 9 , wherein
the moving member includes a gripper member that grips the sheet and is configured to be repeatedly stopped and moved so as to allow an area of the adhesive to be applied widely by the binding unit at the tape transfer position, and
the binding unit is activated during the stop of the sheet to transfer the transfer tape onto the sheet.

11. The sheet processing device according to claim 10 , wherein
the binding unit has a plurality of tape holders arranged in a sheet width direction, each tape holder supporting the transfer tape, and
the tape holders are sequentially pressed against the sheet to transfer the adhesive onto the sheet.

12. A sheet processing device that bonds sheets to one another and then folds a resultant sheet bundle, comprising:
a stacker section that sequentially stores sheets moved thereto;
an adhesive unit that applies an adhesive onto sheets sequentially stored in the stacker section one by one to bond the sheets to one another;
a moving member that moves the sheets to an application position of the adhesive unit;
a folding roller that folds the sheets applied with the adhesive, and a folding blade that pushes an adhesive applied position of a sheet bundle into the folding roller; and
a control member that controls the adhesive unit and the moving member, and acquires sheet thickness information,
wherein the control member can set such that an area over which the adhesive is applied increases with an increase in a number of sheets to be bonded according to the sheet thickness information that bonds sheets by the adhesive unit, or such that the area over which the adhesive is applied is made substantially constant even with the increase in the number of sheets to be bonded.

13. The sheet processing device according to claim 12 , wherein
the adhesive unit includes a transfer tape having an adhesive on a tape base material and presses, at a tape transfer position, the transfer tape to transfer the adhesive onto the sheet in application of the adhesive onto the sheet, thereby bonding a plurality of sheets forming the sheet bundle to one another.

14. A sheet processing device that bonds sheets to one another and then folds a resultant sheet bundle, comprising:
a stacker section that stores sheets conveyed along a conveying path;
a sheet regulating member that regulates the sheets conveyed to the stacker section, and includes a gripper member that grips the sheets and carries;
a retreat path that branches from the conveying path at a position upstream of the stacker section and conveys the sheet conveyed to the stacker section in a direction reverse to a conveying direction;
an adhesive unit that is positioned at a merging point between the conveying path and the retreat path and applies an adhesive onto the sheets to adhere the sheets;
a folding processing section that folds sheets stored in the stacker section bonded at the adhesive unit; and
a control member that controls the sheet regulating member and the adhesive unit, and acquires sheet thickness information of the sheets to be moved to the stacker section,
wherein th

Assignees

• Osada Hisashi
• Saito Takashi
• Kondo Isao
• Canon Finetech Nisca Inc

Inventors

• Osada Hisashi
• Saito Takashi
• Kondo Isao

Classifications

• B42C1/125

  Sheet sorters combined with binding devices · CPC title

• B42C19/02

  starting with single sheets · CPC title

• G03G2215/00822

  Binder, e.g. glueing device · CPC title

• B65H2801/27

  Devices located downstream of office-type machines · CPC title

• B65H37/04

  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