Punching device, sheet processing device, image forming system

Patent metadata

Field	Value
Publication number	US-10155322-B2
Application number	US-201615546577-A
Country	US
Kind code	B2
Filing date	May 31, 2016
Priority date	Aug 6, 2015
Publication date	Dec 18, 2018
Grant date	Dec 18, 2018

Abstract

In a first punching mode, a control portion displaces a support member from a first-path-side end side to a second-path-side end side, and causes a first punching portion on the first-path-side end side to operate in a state where the support member has reached a first target position. In a second punching mode, the control portion displaces the support member from the second-path-side end side to the first-path-side end side, and causes a second punching portion on the second-path-side end side to operate in a state where the support member has reached a second target position. The first and second target positions are based on positions of the support member at points of time when edges on the first-path-side end side and the second-path-side end side are detected by the first sheet sensor and the second sheet sensor, respectively.

First claim

The invention claimed is:

1. A punching device comprising:
a support member facing a conveyance path of a sheet member conveyed in a first direction, and formed to extend from a position close to one of a first-path-side end and a second-path-side end to a position close to the other, the first-path-side end being a first side end of the conveyance path in a second direction perpendicular to the first direction, the second-path-side end being a second side end of the conveyance path in the second direction;
a displacement mechanism configured to cause the support member to be displaced reciprocally along the second direction;
a first sheet sensor supported on the support member at a position close to the first-path-side end and configured to, when the support member is displaced, detect a first edge of the sheet member that is located on the first-path-side end side;
a second sheet sensor supported on the support member at a position close to the second-path-side end and configured to detect, when the support member is displaced, a second edge of the sheet member that is located on the second-path-side end side;
a first punching portion supported on the support member at a position close to the first-path-side end and configured to perform punching on the sheet member;
a second punching portion supported on the support member at a position close to the second-path-side end and configured to perform punching on the sheet member;
a punching mode selection portion configured to select a first punching mode or a second punching mode, wherein in the first punching mode, a conveyance-direction punching process is executed on a part of the sheet member that is on the first edge side, and in the second punching mode, the conveyance-direction punching process is executed on a part of the sheet member that is on the second edge side; and
a control portion configured to cause the displacement mechanism, the first punching portion, and the second punching portion to execute the conveyance-direction punching process, wherein
in the conveyance-direction punching process, the punching is performed on the sheet member in sequence at a plurality of spots along the first direction,
in a case where the first punching mode has been selected, the control portion causes the displacement mechanism to displace the support member from the first-path-side end side to the second-path-side end side, and causes the first punching portion to operate in a state where the support member has reached a first target position,
in a case where the second punching mode has been selected, the control portion causes the displacement mechanism to displace the support member from the second-path-side end side to the first-path-side end side, and causes the second punching portion to operate in a state where the support member has reached a second target position,
the first target position is based on a position of the support member at a point of time when the first edge is detected by the first sheet sensor, and
the second target position is based on a position of the support member at a point of time when the second edge is detected by the second sheet sensor.

2. The punching device according to claim 1 , wherein
the first punching portion and the second punching portion operate in conjunction with each other, and
an interval between the first punching portion and the second punching portion in the second direction is larger than a length from a punching position at one of the first edge and the second edge of a sheet member having a maximum width in the second direction, to the other of the first edge and the second edge.

3. The punching device according to claim 1 , wherein
during the conveyance-direction punching process, when the punching is performed at an initial spot on the sheet member, the control portion displaces the support member from the first-path-side end side or the second-path-side end side to the first target position or the second target position, and then holds the support member at that target position until the punching at the other spots on the sheet member is completed.

4. The punching device according to claim 1 , wherein
during the conveyance-direction punching process performed at three or more spots on the sheet member, when the punching is performed at initial two spots on the sheet member, the control portion displaces the support member from the first-path-side end side or the second-path-side end side to the first target position or the second target position, and then positions the support member at a position that is determined by linear extrapolation based on positions of the support member when the punching is performed at the initial two spots.

5. A sheet processing device that comprises the punching device according to claim 1 that performs punching on the sheet member conveyed from an image forming apparatus that forms an image on the sheet member.

6. An image forming system comprising:
an image forming apparatus configured to form an image on a sheet member; and the sheet processing device according to claim 5 .

Assignees

• Kyocera Document Solutions Inc

Inventors

• Egawa Keisuke

Classifications

• B65H7/02

  by feelers or detectors · 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

• B26F1/14

  Punching tools; Punching dies · CPC title

• B65H7/10

  responsive to incorrect side register (controlling transverse register of webs B65H23/032) · CPC title

• B26F1/04

  with selectively-operable punches · CPC title