Paper transferring apparatus for a copying machine
US4717938A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 13, 1986 |
| Grant date | Jan 5, 1988 |
| Priority date | — |
| Expiry date | Nov 13, 2006 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/00679
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
The present invention is of a paper transferring apparatus for a copying machine which consists of a pair of upper and lower resist rollers and a pair of upper and lower pre-transfer rollers located at a photoreceptor-drum side from these resist rollers, and PA0 the upper roller out of the paired upper and lower resists rollers has a substantially larger roller diameter at the center part in the axial direction of the roller in comparison with that at the both ends, and the lower roller thereof has a uniform roller diameter throughout the roller, and PA0 the upper roller out of the paired upper and lower pre-transfer rollers has a substantially smaller roller diameter at the center part in the axial direction of the roller in comparison with that at the both end parts, and the lower roller thereof has a uniform roller diameter throughout the roller.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.