Disk type inverter-stacker with improved sheet handling slots for different paper weights
US5803705A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 3, 1997 |
| Grant date | Sep 8, 1998 |
| Priority date | — |
| Expiry date | Apr 3, 2017 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H2404/657
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
In a disk type sheet inverting and stacking system with rotatable disk units with sheet transporting slots, in which printed sheets outputted by a reproduction system are sequentially fed into those slots to be inverted by rotation of the disk units and then released from the slots at a stacking position, the sheet transporting slots of the disk units are provided with a convolute sheet path formed by plural internal sheet corrugating protuberances extending transversely across the slot from opposite sides of the slot, spaced along the slot, to form a convolute sheet corrugating sheet path within the slot to automatically increase the retention force of the sheet within the slot in proportion to an increase in the thickness or stiffness of the sheet, without substantially increasing the resistance to lateral movement of the sheet within the slot. These protuberances have smoothly arcuate large diameter surfaces, with small surface angles in the direction of sheet insertion, to provide relatively low resistance to the insertion of a sheet into the slots.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.