Belt on belt sheet transport system for a printing system

Patent metadata

Field	Value
Publication number	US-9707778-B2
Application number	US-201615229350-A
Country	US
Kind code	B2
Filing date	Aug 5, 2016
Priority date	Feb 21, 2014
Publication date	Jul 18, 2017
Grant date	Jul 18, 2017

Abstract

A sheet transport system comprising an endless carrier belt that has a predetermined stiffness and is arranged to carry the sheets towards an end of a conveyer path where the sheet is separated from the carrier belt by passing this belt around a separating member that has a predetermined curvature, wherein the carrier belt runs in parallel with an endless conveyer that has a larger stiffness than the carrier belt and, at the end of the conveyer path, has a smaller curvature than the separating member.

First claim

The invention claimed is:

1. A sheet transport system comprising an endless carrier belt that has a predetermined stiffness and is arranged to carry the sheets towards an end of a conveyer path where the sheet is separated from the carrier belt by passing this belt around a separating member that has a predetermined curvature,
wherein the carrier belt runs in parallel with an endless conveyer that has a larger stiffness than the carrier belt and, at the end of the conveyer path, has a smaller curvature than the separating member; and
wherein the conveyer is formed by an endless conveyer belt.

2. The transport system according to claim 1 , wherein the carrier belt is superposed on the conveyer.

3. The transport system according to claim 1 , wherein the conveyer belt is passed around a deflection roller at the end of the conveyer path, and the carrier belt extends beyond the deflection roller to a separating roller that has the smaller diameter than the deflection roller, and the carrier belt then runs back to the deflection roller where it is joined again with the conveyer belt.

4. The transport system according to claim 3 , comprising a tension roller for the carrier belt.

5. The transport system according to claim 1 , wherein the conveyer has a metal surface supporting the carrier belt and, directly or indirectly, the sheets.

6. The transport system according to claim 1 , wherein the conveyer has a support surface with perforations.

7. The transport system according to claim 6 , wherein the carrier belt has perforations.

8. A sheet processing apparatus comprising at least one processing stage arranged on a conveyer path that is formed by at least one sheet transport system according to claim 1 .

9. The sheet processing apparatus according to claim 8 , wherein said at least one processing stage is an ink jet marking module.

10. The transport system according to claim 1 , wherein the conveyer belt is passed around a deflection roller at the end of the conveyer path, and the carrier belt extends beyond the deflection roller to a separating roller that has the smaller diameter than the deflection roller, and the carrier belt then runs back to a further deflection roller where it is joined again with the conveyer belt.

11. The transport system according to claim 10 , comprising a tension roller for the carrier belt.

12. A sheet transport system comprising an endless carrier belt that has a predetermined stiffness and is arranged to carry the sheets towards an end of a conveyer path where the sheet is separated from the carrier belt by passing this belt around a separating member that has a predetermined curvature, wherein the carrier belt runs in parallel with an endless conveyer that has a larger stiffness than the carrier belt and, at the end of the conveyer path, has a smaller curvature than the separating member; and wherein the conveyer has a support surface with perforations.

13. The transport system according to claim 12 , wherein the carrier belt has perforations.

Assignees

• Oce Tech Bv

Inventors

• Jacobs Roy H R

Classifications

• B65H29/56

  for stripping from elements or machines {(for electrographic machines G03G)} · CPC title

• B65G15/62

  Guides for sliding belts · CPC title

• B65H2404/2691

  Arrangement of successive belts forming a transport path · CPC title

• B65G23/14

  Endless driving elements extending parallel to belt or chain {(B65G23/18 takes precedence)} · CPC title

• B65H2404/286

  Hardness · CPC title