Image forming apparatus and method for controlling fuser thereof
US8750737B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 18, 2011 |
| Grant date | Jun 10, 2014 |
| Priority date | — |
| Expiry date | Oct 2, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/2025
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An image forming apparatus includes a heat roller heated to a preset temperature; a pressure roller for having conductivity and forming a nip by pressure-contacting with the heat roller; a power supply unit to apply a bias voltage to the pressure roller; and a controller to, when a printing paper enters the nip, control the power supply unit to apply the bias voltage to the pressure roller. When a time interval is longer than a preset time, the controller can control the power supply unit not to apply the bias voltage when the printing paper is not placed in the nip, and when the time interval is shorter than the preset time, the controller can control the power supply unit to apply the bias voltage when the printing paper is not placed in the nip.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.