Primary transfer unit of image forming apparatus
US7428400B2 · kind B2 · utility
10Cited by
7References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 27, 2006 |
| Grant date | Sep 23, 2008 |
| Priority date | — |
| Expiry date | Nov 18, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/0132
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A primary transfer unit includes transfer units for performing a toner transfer from image carriers onto a transfer belt. Each of the transfer units is formed with a metallic roller. The metallic roller is arranged so as to satisfy θ1<θ2, where an angle of the endless belt with respect to a tangent to the image carrier, on a side upstream of rotation of the endless belt to a transfer nip region where the image carrier and the endless belt are in contact is θ1, and an angle of the endless belt with respect to the tangent, on a side downstream of rotation of the endless belt to the transfer nip region is θ2.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.