Sheet conveying device, image forming apparatus incorporating the sheet conveying device, and post processing device incorporating the sheet conveying device

Patent metadata

Field	Value
Publication number	US-10106354-B2
Application number	US-201815906494-A
Country	US
Kind code	B2
Filing date	Feb 27, 2018
Priority date	Mar 2, 2017
Publication date	Oct 23, 2018
Grant date	Oct 23, 2018

Abstract

A sheet conveying device, which is included in an image forming apparatus and a post processing device, includes a position detector configured to detect a position of a sheet, a sheet conveying body, a fixed body, a movable body configured to move, relative to the fixing body, between a first position and a second position different from the first position, and an index mounted on the fixed body. The sheet conveying device further includes a data storing device, a conveyance positional deviation calculator configured to calculate a positional deviation amount of the sheet to the reference sheet conveyance position, a detected positional deviation calculator configured to calculate a positional deviation amount of the position detector to the index based on a result of the position detector, and a reference position detector configured to correct the reference sheet conveyance position based on a result of the detected positional deviation calculator.

First claim

What is claimed is:

1. A sheet conveying device comprising:
a position detector configured to detect a position of a sheet;
a sheet conveying body configured to convey the sheet;
a fixed body;
a movable body on which the position detector is mounted and configured to move, relative to the fixed body, between a first position at which the position detector detects the position of the sheet and a second position different from the first position; and
an index mounted on the fixed body and configured to function as a reference position based on which a positional deviation amount of the position detector at the first position is calculated.

2. The sheet conveying device according to claim 1 , further comprising a detected positional deviation calculator configured to calculate a positional deviation amount of the position detector relative to the index, based on a detection result of a position of the index by the position detector.

3. The sheet conveying device according to claim 2 , further comprising a reference position corrector configured to function as a reference position to detect a positional deviation amount of the sheet and correct a reference sheet conveyance position determined according to a relative positional relation to the position detector, based on the positional deviation amount of the position detector calculated by the detected positional deviation calculator.

4. The sheet conveying device according to claim 1 ,
wherein the position detector includes multiple position detectors mounted on a single body.

5. The sheet conveying direction according to claim 1 , further comprising a position corrector configured to function as the sheet conveying body and correct the position of the sheet based on the positional deviation amount of the sheet detected by the position detector.

6. The sheet conveying direction according to claim 5 ,
wherein the position corrector is mounted on the fixed body.

7. The sheet conveying device according to claim 1 ,
wherein the movable body includes a cover configured to cover the position detector, and
wherein the cover includes an opening closably disposed opposed to the position detector.

8. An image forming apparatus comprising the sheet conveying device according to claim 1 .

9. A post processing device comprising:
a sheet receiving device configured to receive a sheet conveyed from an image forming apparatus; and
the sheet conveying device according to claim 1 .

10. A sheet conveying device comprising:
a position detector configured to detect a position of a sheet;
a data storing device configured to function as a reference position to detect a positional deviation amount of the sheet and store a reference sheet conveyance position determined according to a relative positional relation to the position detector,
a conveyance positional deviation calculator configured to calculate a positional deviation amount of the sheet relative to the reference sheet conveyance position, based on a detection result of the position of the sheet by the position detector,
a sheet conveying body configured to convey the sheet;
a fixed body;
a movable body on which the position detector is mounted and configured to move, relative to the fixed body, between a first position at which the position detector detects the position of the sheet and a second position different from the first position;
an index mounted on the fixed body at a position opposed to the position detector when the movable body is located at the first position;
a detected positional deviation calculator configured to calculate a positional deviation amount of the position detector relative to the index, based on a detection result of a position of the index by the position detector; and
a reference position corrector configured to correct the reference sheet conveyance position, based on the positional deviation amount of the position detector calculated by the detected positional deviation calculator.

11. The sheet conveying device according to claim 10 ,
wherein the position detector includes multiple position detectors mounted on a single body.

12. The sheet conveying device according to claim 10 , further comprising a position corrector configured to function as the sheet conveying body and correct the position of the sheet based on the positional deviation amount of the sheet detected by the position detector.

13. The sheet conveying direction according to claim 12 ,
wherein the position corrector is mounted on the fixed body.

14. The sheet conveying direction according to claim 10 ,
wherein the movable body includes a cover configured to cover the position detector, and
wherein the cover includes an opening closably disposed opposed to the position detector.

15. An image forming apparatus comprising the sheet conveying device according to claim 10 .

16. A post processing device comprising:
a sheet receiving device configured to receive a sheet conveyed from an image forming apparatus; and
the sheet conveying device according to claim 10 .

Assignees

• Karikusa Yuji
• Sekita Daiki
• Ricoh Co Ltd

Inventors

• Karikusa Yuji
• Sekita Daiki

Classifications

• G03G2215/00548

  Jam, error detection, e.g. double feeding · CPC title

• G03G2215/00616

  Optical detector · CPC title

• B65H2553/81

  on a movable element · CPC title

• G03G15/6529

  Transporting (G03G15/6555 takes precedence) · CPC title

• B41J13/0036

  in the output section of automatic paper handling systems · CPC title