Pressure-roller arrangement for a stacking device of a printer or copier
US5651488A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 20, 1995 |
| Grant date | Jul 29, 1997 |
| Priority date | — |
| Expiry date | Nov 20, 2015 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H45/1015
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A stacking device in a printer or copier for stacking a strip-like, prefolded recording medium has, as feed arrangement, a motor-driven feed roller (13) and a plurality of adjacently arranged pressure rollers for pressing the recording medium (10) against the feed roller (13). The two outer pressure rollers (16/1, 16/2) in respect of the edge regions of the recording medium are designed as guide pressure rollers which change their inclination of the axes of rotation in dependence on the transporting direction of the paper or recording medium and thus make the recording medium taut between the guide pressure rollers. This prevents undesirable bunching, creasing or deformation caused by slack in the paper between the pressure rollers. In order to achieve this change in the inclination of the axes of rotation, the guide pressure rollers (16/1, 16/2) contain an eccentric axle arrangement.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.