Image forming apparatus

Patent metadata

Field	Value
Publication number	US-10926568-B2
Application number	US-201916442675-A
Country	US
Kind code	B2
Filing date	Jun 17, 2019
Priority date	Jun 22, 2018
Publication date	Feb 23, 2021
Grant date	Feb 23, 2021

Abstract

Provided is an image forming apparatus configured to form an image on a sheet. A case binding apparatus is configured to cut predetermined sides of a sheet bundle formed by binding a plurality of sheets to perform bookbinding. The case binding apparatus includes a cutting-waste box configured to collect cutting waste produced by the cutting and a cutting-waste full load detection sensor configured to detect a fully loaded state of the cutting-waste box with the cutting waste collected in the cutting-waste box. When the sheet onto which the image is to be formed is not a last sheet in the sheet bundle, the image forming apparatus does not interrupt image formation processing in response to the fully loaded state of the waste box detected by the detector when an order of the sheet in the sheet bundle is smaller than a predetermined order.

First claim

What is claimed is:

1. An image forming apparatus, comprising:
an image forming unit configured to form an image on a sheet;
a bookbinding unit configured to perform bookbinding of a sheet bundle including a plurality of sheets;
a cutting unit configured to cut a predetermined side of the sheet bundle formed by the bookbinding in the bookbinding unit;
a waste box configured to collect cutting waste produced by the cutting;
a detector configured to detect a fully loaded state of the waste box, which corresponds to collection of a predetermined amount of the cutting waste in the waste box; and
a controller configured to:
control, when an order of the sheet in the sheet bundle, on which the image is to be formed, is smaller than a predetermined order, the image forming unit to not perform interruption of image formation processing which is due to detection of the fully loaded state of the waste box detected by the detector, and;
control, when the order of the sheet is the predetermined order, the image forming unit to interrupt the image formation processing in accordance with the fully loaded state of the waste box, which is detected by the detector.

2. The image forming apparatus according to claim 1 , wherein, when the sheet in the sheet bundle, on which the image is to be formed, is other than a last sheet, the controller controls the image forming unit to not perform interruption of the image formation processing which is due to detection of the fully loaded state of the waste box detected by the detector.

3. The image forming apparatus according to claim 1 , wherein, the controller controls the image forming unit to interrupt the image formation processing in accordance with the fully loaded state of the waste box, which is detected by the detector, when the order of the sheet in the sheet bundle is the predetermined order and continues the image formation processing performed by the image forming unit when the fully loaded state of the waste box is not detected by the detector.

4. The image forming apparatus according to claim 1 ,
wherein the image forming unit forms an image on a sheet serving as a cover sheet after forming an image on a sheet serving as an inner sheet in the sheet bundle, and
wherein, when the sheet on which the image is to be formed is the inner sheet, the controller controls the image forming unit to continue the image formation processing even after the fully loaded state of the waste box is detected by the detector and,
wherein, when the sheet on which the image is to be formed is the cover sheet, the controller controls the image forming unit to continue the image formation for the cover sheet in a case in which the fully loaded state of the waste box, which has been detected by the detector, is cleared before start of the image formation for the cover sheet and controls the image forming unit to interrupt the image formation for the cover sheet in a case in which the fully loaded state of the waste box is not cleared before start of the image formation for the cover sheet.

5. The image forming apparatus according to claim 4 , wherein the bookbinding unit covers the sheet bundle with the cover sheet to perform the bookbinding.

6. The image forming apparatus according to claim 1 , wherein, while the bookbinding unit is executing a bookbinding operation during which the cutting unit does not perform cutting, the cutting waste collected in the waste box is removable by a user.

7. The image forming apparatus according to claim 1 , wherein the cutting unit includes a waste receiving box, which is provided at a position at which the cutting waste produced by the cutting falls, and is configured to release the cutting waste to the waste box after a cutting operation performed by the cutting unit is terminated.

8. The image forming apparatus according to claim 7 ,
wherein the bookbinding unit includes:
a gluing unit configured to apply glue to a predetermined side of the sheet bundle; and
a bonding unit configured to bond a cover sheet onto the sheet bundle having the glue-applied predetermined side,

wherein the cutting unit cuts three sides of the sheet bundle onto which the cover sheet is bonded, other than the glue-applied side of the sheet bundle, and
wherein, after the cutting operation for the three sides by the cutting unit is terminated, the waste receiving box releases the cutting waste into the waste box.

9. An image forming apparatus to be connected to a cutting apparatus,
the cutting apparatus including:
a cutting unit configured to cut a predetermined side of a sheet bundle formed by bookbinding;
a waste box configured to collect cutting waste produced by the cutting; and
a detector configured to detect a fully loaded state of the waste box, which corresponds to collection of a predetermined amount of the cutting waste in the waste box,

the image forming apparatus comprising:
an image forming unit configured to form an image on a sheet; and
a controller configured to:
control, when an order of the sheet in the sheet bundle, on which the image is to be formed, is smaller than a predetermined order, the image forming unit to not perform interruption of image formation processing which is due to detection of the fully loaded state of the waste box detected by the detector; and
control, when the order of the sheet is the predetermined order, the image forming unit to interrupt the image formation processing in accordance with the fully loaded state of the waste box, which is detected by the detector.

Assignees

• Canon Kk

Inventors

• Nishimura Shunsuke
• Nakabayashi Junichiro

Classifications

• B65H35/0086

  using movable cutting elements · CPC title

• G03G15/6523 Primary

  Cutting · CPC title

• B42C9/0025

  and subsequently applying a cover (casing-in B42C11/00) · 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

• B42C19/02 Primary

  starting with single sheets · CPC title