Image forming apparatus
US8521046B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 7, 2010 |
| Grant date | Aug 27, 2013 |
| Priority date | — |
| Expiry date | Sep 14, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/0161
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An image forming apparatus includes a recording medium transport belt which is suspended by a plurality of roller members. An image is secondarily transferred from a first image carrier through an intermediate transfer body to a recording medium. An image is directly transferred from a second image carrier to the recording medium. The image forming apparatus further includes a pattern image sensing unit which senses a pattern image transferred from the first image carrier and the second image carrier finally to the recording medium transport belt. Each of a distance from a secondary transfer position to a sensing position and a distance from a direct transfer position to the sensing position in a recording medium transport belt rotation direction is a natural number times a circumferential length of a roller member causing a speed change in the recording medium transport belt among the plurality of roller members.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.