Sheet remover, conveying device, and image forming apparatus

Patent metadata

Field	Value
Publication number	US-12448239-B2
Application number	US-202318142581-A
Country	US
Kind code	B2
Filing date	May 3, 2023
Priority date	May 18, 2022
Publication date	Oct 21, 2025
Grant date	Oct 21, 2025

Abstract

A sheet remover includes a pair of insertion-part formers and a pair of through-part formers. The pair of insertion-part formers forms an insertion part between the pair of insertion-part formers into which a sheet is inserted. The pair of through-part formers forms a through part between the pair of through-part formers through which the sheet is inserted. The through part is located downstream from the insertion part in a sheet insertion direction in which the sheet is inserted.

First claim

The invention claimed is:

1. A sheet remover, comprising:
a pair of insertion-part formers forming an insertion part between the pair of insertion-part formers into which a sheet is inserted; and
a pair of through-part formers forming a through part between the pair of through-part formers through which the sheet is inserted, the through part being located downstream from the insertion part in a sheet insertion direction in which the sheet is inserted, wherein
a length of the insertion part in a thickness direction of the sheet decreases in the sheet insertion direction, and
a length of the through part in the thickness direction of the sheet is constant in the sheet insertion direction.

2. The sheet remover according to claim 1 , wherein an outer circumferential surface of the sheet remover includes a winding portion along which the sheet is wound.

3. The sheet remover according to claim 1 , wherein at least one of the pair of insertion-part formers includes a guide face inclined toward the through part in the sheet insertion direction to guide the sheet.

4. The sheet remover according to claim 1 , wherein at least one of the pair of insertion-part formers includes a curved upstream end in the sheet insertion direction.

5. The sheet remover according to claim 1 , wherein an outer circumferential surface of the sheet remover includes a planar portion at a position around the insertion part in the sheet insertion direction.

6. The sheet remover according to claim 1 , further comprising a contact part at a downstream end of the through part in the sheet insertion direction to contact the sheet.

7. The sheet remover according to claim 6 , wherein the contact part is a face perpendicular to the sheet insertion direction.

8. The sheet remover according to claim 1 , wherein an outer circumferential surface of the sheet remover is curved at least at two diagonal positions in a cross-section in a direction perpendicular to the sheet insertion direction.

9. The sheet remover according to claim 1 , wherein an outer circumferential surface of the sheet remover includes a planar portion extending in the sheet insertion direction at a position not around the insertion part in the sheet insertion direction.

10. The sheet remover according to claim 1 , wherein the sheet remover is a rod-shaped device having a length in the sheet insertion direction.

11. A conveying device comprising the sheet remover according to claim 1 .

12. The conveying device according to claim 11 , further comprising a pair of conveyance passage formers forming a conveyance passage through which the sheet is conveyed,
wherein one of the pair of conveyance passage formers is openable and closable and the other of the pair of conveyance passage formers is disposed at a position to be contacted by the sheet remover.

13. An image forming apparatus comprising the conveying device according to claim 11 .

Assignees

• Kobayashi Yukifumi
• Ricoh Co Ltd

Inventors

• Kobayashi Yukifumi

Classifications

• B65H2601/11

  Clearing faulty handling, e.g. jams · CPC title

• B65H2402/441

  movable for facilitating access to area inside the housing, e.g. pivoting or sliding · CPC title

• G03G21/1638

  directed to paper handling or jam treatment · CPC title

• G03G15/55

  Self-diagnostics; Malfunction or lifetime display · CPC title

• B65H5/00 Primary

  Feeding articles separated from piles; Feeding articles to machines ({B65H9/00 takes precedence; } identical mechanisms or parts for delivering or advancing articles from machines B65H29/00; recirculating articles B65H85/00 {, G03B27/6257}) · CPC title