Stack quality of printed paper
US6109606A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 3, 1999 |
| Grant date | Aug 29, 2000 |
| Priority date | — |
| Expiry date | Jun 3, 2019 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H2801/06
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
Paper decurling is achieved at the output of a printer or other paper handling machine by discharging sequential sheets of the paper into an angled tray. Upon sensing of the paper at a predetermined height, paper curling is presumed and the tray is caused to drop. This causes the sheets to slide against an end stop and drop down with the tray. The tray then returns back upward, whereupon the sheets, which are sliding against the end stop are decurled at an end of the tray facing the discharge portion of the paper handling machine. The movement of the tray is further controlled so as to establish the stack at a uniform predetermined height at the end of each print job.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.