Duplexing copying system
US4186662A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 22, 1977 |
| Grant date | Feb 5, 1980 |
| Priority date | — |
| Expiry date | Aug 22, 1997 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S271/902
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A system for duplicating images wherein a copy sheet is delivered to an impression cylinder. A first image is transferred to one side of each sheet. Each sheet is then removed from the impression cylinder, delivered to a reversing means and then to the impression cylinder, trailing edge first. The re-feeding is in synchronism with the second image whereby this second image is transferred to the opposite side of each sheet. The impression cylinder is provided with a first gripper for engaging the leading edge of each sheet when the sheet is first fed to the impression cylinder. A second gripper is provided on the impression cylinder for engaging the trailing edge of each sheet. The impression cylinder thus simultaneously carries the sheets as the sheets are moved through the stages of operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.