Image forming apparatus
US7359663B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 5, 2006 |
| Grant date | Apr 15, 2008 |
| Priority date | — |
| Expiry date | May 27, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/0154
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An image forming apparatus has a plurality of developing units for developing toner images of different colors, an intermediate transfer belt for transferring the toner images of the respective colors onto a surface of the belt or onto a recording sheet transported over the belt surface, a first or drive roller for driving the belt while the belt is wound around the first roller, a second or driven roller and a tension roller, which is driven along with the driving of the belt driven by the first roller. The image forming apparatus satisfies a relation defined by the following equation:D2=N·D1where D1 is a belt-inclusive outer diameter of the first roller where the belt is wound, including the thickness t of the belt, D2 is an outer diameter of the second roller, and N=n or 1/n where n is a positive integer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.