Image forming apparatus which controls heating width of fixing device
US7715774B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 27, 2007 |
| Grant date | May 11, 2010 |
| Priority date | — |
| Expiry date | Jun 10, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/00734
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A fixing device includes a fixing section, a sheet-width detector, a heating-width changing mechanism, a mixed feeding detector, and a controller. The fixing section includes at least a fixing member that fixes a toner image on a recording medium upon application of heat thereto. The sheet-width detector detects a width of the recording medium and outputs a sheet-width signal. The heat-width changing mechanism changes a heating width of the fixing member. The mixed feeding detector detects whether or not mixed feeding of a plurality of sheets of the recording medium having different widths is performed during a successive sheet feeding, and outputs a mixed feeding signal. The controller controls the heating-width changing mechanism to control the heating width based on the sheet-width signal and the mixed feeding signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.