Image forming system

Patent metadata

Field	Value
Publication number	US-11460796-B2
Application number	US-202016850050-A
Country	US
Kind code	B2
Filing date	Apr 16, 2020
Priority date	May 8, 2019
Publication date	Oct 4, 2022
Grant date	Oct 4, 2022

Abstract

An image forming system includes a first feeding portion configured to feed a recording sheet, an image forming portion, a sheet conveyance path, a second feeding portion configured to feed an inserting sheet from any of a plurality of supporting portions including a first supporting portion and a second supporting portion, a detection portion, and a controller. The controller is configured to execute, during execution of a process of feeding a first inserting sheet from the first supporting portion to the sheet conveyance path, a movement processing of moving a second inserting sheet supported on the second supporting portion to a position where a trailing edge of the second inserting sheet is placed downstream in a sheet conveyance direction of a detection position of the detection portion and thereafter stopping the second inserting sheet.

First claim

What is claimed is:

1. An image forming system comprising:
a first feeding portion configured to feed a recording sheet;
an image forming portion configured to form an image on a recording sheet fed from the first feeding portion;
a sheet conveyance path through which a recording sheet on which an image has been formed by the image forming portion is conveyed;
a second feeding portion comprising a plurality of supporting portions each configured to support an inserting sheet, and configured to feed an inserting sheet from any of the plurality of supporting portions toward the sheet conveyance path, the plurality of supporting portions including a first supporting portion and a second supporting portion;
a detection portion configured to detect presence of an inserting sheet supported on each of the plurality of supporting portions; and
a controller configured to execute a job including a feeding process in which a recording sheet is fed from the first feeding portion and is formed an image thereon by the image forming portion, and a process in which an inserting sheet is fed from the second feeding portion and is inserted between recording sheets,
the controller being configured to execute, during execution of a process of feeding a first inserting sheet from the first supporting portion to the sheet conveyance path, a movement processing of moving a second inserting sheet supported on the second supporting portion to a position where a trailing edge of the second inserting sheet is placed downstream in a sheet conveyance direction of a detection position of the detection portion and thereafter stopping the second inserting sheet.

2. The image forming system according to claim 1 ,
wherein the controller is configured to execute a feeding process of a current recording sheet if a detection result of the detection portion indicates that an inserting sheet to be inserted immediately before the current recording sheet in an order of passing through the sheet conveyance path is present on any of the plurality of supporting portions.

3. The image forming system according to claim 1 ,
wherein the controller is capable of executing a first mode in which a feed source of an inserting sheet is changed among the plurality of supporting portions each time one inserting sheet is fed during execution of the job, and the controller is configured to execute the movement processing in a case where the first mode is set.

4. The image forming system according to claim 3 ,
wherein the detection portion comprises a first detection unit configured to detect presence of an inserting sheet supported on the first supporting portion, and a second detection unit configured to detect presence of an inserting sheet supported on the second supporting portion, and
wherein in a state where the movement processing is executed during execution of a process for feeding the first inserting sheet, the first detection unit detects a third inserting sheet supported on the first supporting portion, and the second detection unit detects a fourth inserting sheet supported on the second supporting portion, the third inserting sheet being an inserting sheet to be conveyed to the sheet conveyance path after the second inserting sheet, the fourth inserting sheet being an inserting sheet to be conveyed to the sheet conveyance path after the third inserting sheet.

5. The image forming system according to claim 4 ,
wherein the second feeding portion comprises a first conveyance path through which an inserting sheet fed from the first supporting portion passes, a second conveyance path through which an inserting sheet fed from the second supporting portion passes and which merges with the first conveyance path, and a third conveyance path that is communicated to the sheet conveyance path from a merging position of the first conveyance path and the second conveyance path, and
wherein the controller is configured to execute the movement processing such that the second inserting sheet is moved to a position where a trailing edge of the second inserting sheet in the sheet conveyance direction is placed downstream of a detection position of the second detection unit and where a leading edge of the second inserting sheet in the sheet conveyance direction is placed upstream of the merging position, and thereafter, stops the second inserting sheet.

6. The image forming system according to claim 1 ,
wherein the controller is capable of executing a second mode in which, in a case where any of the plurality of supporting portions is set as a current feed source of an inserting sheet, a feed source of an inserting sheet is not changed from the current feed source as long as a detection result of the detection portion indicates that at least one inserting sheet is present at the current feed source.

7. An image forming system comprising:
a first feeding portion configured to feed a recording sheet;
an image forming portion configured to form an image on a recording sheet fed from the first feeding portion;
a sheet conveyance path through which a recording sheet on which an image has been formed by the image forming portion is conveyed;
a second feeding portion comprising a plurality of supporting portions each configured to support an inserting sheet, and configured to feed an inserting sheet from any of the plurality of supporting portions toward the sheet conveyance path;
a detection portion configured to detect presence of an inserting sheet supported on each of the plurality of supporting portions; and
a controller configured to execute a job including a feeding process in which a recording sheet is fed from the first feeding portion and is formed an image thereon by the image forming portion, and a process in which an inserting sheet is fed from the second feeding portion and is inserted between recording sheets,
the controller being configured to
change a feed source of an inserting sheet among the plurality of supporting portions in the second feeding portion each time one inserting sheet is fed during execution of the job, and
execute a feeding process of a current recording sheet if a detection result of the detection portion indicates that an inserting sheet to be inserted immediately before the current recording sheet in an order of passing through the sheet conveyance path is present on any of the plurality of supporting portions.

8. The image forming system according to claim 7 ,
wherein the detection portion comprises a first detection unit configured to detect presence of an inserting sheet supported on a first supporting portion among the plurality of supporting portions, and a second detection unit configured to detect presence of an inserting sheet supported on a second supporting portion among the plurality of supporting portions, and
wherein during execution of a process for feeding a fifth inserting sheet to the sheet conveyance path from the first supporting portion, the second detection unit detects a sixth inserting sheet to be conveyed to the sheet conveyance path after the fifth inserting sheet, and the first detection unit detects a seventh inserting sheet to be conveyed to the sheet conveyance path after the sixth inserting sheet.

9. An image forming system comprising:
a first feeding portion configured to feed a recording sheet;
an image forming portion configured to form an image on a recording sheet fed from the first feeding portion;
a sheet conveyance path through which a recording sheet on which an image has been formed by the image forming portion is conveyed;
a second feeding portion comprising a plurality of supporting portions each configured to support an inserting sheet, and configured to feed an inserting sheet from any of the p

Assignees

• Canon Kk

Inventors

• Nishikata Akinobu
• Yokoya Takashi
• Yumoto Koji
• Kawakita Akihiro

Classifications

• B65H2701/1313

  trailing edge · CPC title

• B65H43/06

  detecting, or responding to, completion of pile (B65H43/08 takes precedence) · CPC title

• G03G15/6529

  Transporting (G03G15/6555 takes precedence) · CPC title

• B65H5/26

  Duplicate, alternate, selective, or coacting feeds · CPC title

• B65H2513/50

  Timing · CPC title