Image forming apparatus which reduces the warm-up time of a fixing device, and control method thereof
US7706708B2 · kind B2 · utility
Assignees
Inventor
Key dates
| Filing date | Jan 30, 2007 |
| Grant date | Apr 27, 2010 |
| Priority date | — |
| Expiry date | Sep 15, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/2032
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An image forming apparatus according to the invention includes an image forming apparatus main body and at least one option apparatus that is mounted on the main body when functions are extended. The main body includes a main power supply unit that converts a commercial power supply into a predetermined voltage, a first load that is driven by the main power supply unit, a first auxiliary power supply that is charged by the commercial power supply, and a fixing device including a main heater heated by the power of the commercial power supply and an auxiliary heater heated by the power of the first auxiliary power supply. The at least one option apparatus includes a second load driven by the power of the main power supply unit and a second auxiliary power supply that is charged by the commercial power supply when the at least one option apparatus is mounted, while heating the auxiliary heater in conjunction with the first auxiliary power supply.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.