Image forming apparatus and image forming method
US8478167B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 2, 2010 |
| Grant date | Jul 2, 2013 |
| Priority date | — |
| Expiry date | Nov 15, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/0158
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An image forming apparatus is provided with an image forming station including photoconductive drums and adapted to form toner images on surfaces of the respective photoconductive drums, and a drive control unit for rotating and driving the photoconductive drums. The image forming station includes a reference pulse output section for generating a reference pulse having a cycle equal to or an integral multiple of a rotation cycle of the photoconductive drums and outputting the reference pulse to the drive control unit. The drive control unit includes a phase peak detector for detecting phase peaks of surface speeds of the photoconductive drums, a phase difference detector for detecting phase differences between an edge of the reference pulse and the phase peaks, and a phase synchronization controller for synchronizing phases of the surface speeds of the photoconductive drums by controlling rotation speeds of the photoconductive drums according to the phase differences.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.