Intermediate transfer-type image forming apparatus with separation/contact mechanism
US8095040B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 15, 2008 |
| Grant date | Jan 10, 2012 |
| Priority date | — |
| Expiry date | May 10, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2221/169
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
In an embodiment of the present invention, an image forming apparatus includes a transfer belt that primarily transfers a toner image formed on a photosensitive drum; a secondary transfer unit including a transfer mechanism portion that secondarily transfers the primarily transferred toner image to a paper; an optical sensor that detects a reference toner image on the transfer belt; and a shutter that protects a detection face of the optical sensor, wherein a separation/contact mechanism portion disposed so as to be brought into contact with both of the shutter and the secondary transfer unit is provided, and the separation/contact mechanism portion allows the shutter to move so as to open and allows the secondary transfer unit to move so as to separate from the transfer belt when the reference toner image is detected by the optical sensor, and allows the shutter to move so as to separate from the transfer belt when the secondary transfer unit is drawn out from an apparatus main body.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.