Image forming apparatus with a supplemental power supply unit
US7840153B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 18, 2006 |
| Grant date | Nov 23, 2010 |
| Priority date | — |
| Expiry date | Jun 20, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/2064
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An image forming apparatus having (1) a main power supply unit (PSU), which converts an AC power source into an AC power and a first DC power, provides the AC power to a fusing unit, and provides the first DC power to a plurality of DC-powered units in the image forming apparatus, (2) a supplemental power supply unit, which accumulates the AC power source and provides a second DC power to the plurality of DC-powered units for a predetermined period, and (3) a controller, which increases or decreases the AC power to be provided to the fusing unit and selects the DC power source from the main PSU and the supplemental PSU by detecting that the supplemental PSU can provide the DC power to the plurality of DC-powered units or not. When the supplemental power supply unit can provide DC power to the Plurality of DC-powered units, the controller increases the AC power from the main power supply unit to the fusing unit and shortens the recovery time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.