Paper sensitive spring loaded prefuser paper guide
US6823167B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 30, 2003 |
| Grant date | Nov 23, 2004 |
| Priority date | — |
| Expiry date | May 28, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/657
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A guide system for xerographic printing apparatus introduces paper bearing an unfixed image and having a broad range of basis weights into a fuser nip from a prefuser transport without causing image smear. An entrance baffle is positioned in the path of the paper advancing toward the fuser nip for engagement by the paper's leading edge. The entrance baffle is hinged at its mounting end for swinging movement between a maximal and minimal positions as defined by stop members and is biased into engagement with the minimal stop member. The magnitude of the bias is chosen such that as the lightest basis weight paper engages the entrance baffle, it bends around its free end and is guided into the fuser nip, and such that as the heaviest paper engages the entrance baffle, it forces the entrance baffle toward engagement with the second stop member and itself is guided into the fuser nip.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.