Image forming apparatus
US9244391B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 17, 2015 |
| Grant date | Jan 26, 2016 |
| Priority date | — |
| Expiry date | Mar 17, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/1675
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
First to N-th image forming units are sequentially arranged from the upstream to the downstream along the movement direction of an intermediate transfer belt. When L is defined as a distance between contact points of every two adjacent ones of the first to N-th image bearing members with the intermediate transfer member, when V is defined as a moving speed of the intermediate transfer belt and, when a timing at which transfer bias applying unit for the n-th image forming unit is turned off using a timing at which the transfer bias applying unit for the first image forming unit is turned off as reference is defined as (L/V)×(n−1)+αn, αn for every integer n between 2 and N is set so that an absolute value of αn is less than L/V and at least one pair of αn among the plurality of αn has different values.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.