Sheet folding apparatus
US4717134A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 14, 1986 |
| Grant date | Jan 5, 1988 |
| Priority date | — |
| Expiry date | Mar 14, 2006 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/00877
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A sheet folding apparatus including a plurality of sheet processing units each having a couple of folding rollers, a deflector and a folding position controlling passage. One set of the apparatus is sufficient to effect two-folding, z-folding and reversed z-folding of the sheet. A guiding member is disposed closely adjacent to the nip of the folding roller couple for conveying the sheet out of the folding positions controlling passage and for forming a new fold. When the sheet is three-folded, an undesirable double fold is prevented, which may otherwise be produced by an undesirable fold formed adjacent to the already formed fold when the sheet is folded second time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.