Power supply control for an image forming apparatus
US9423867B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 13, 2013 |
| Grant date | Aug 23, 2016 |
| Priority date | — |
| Expiry date | Sep 4, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/80
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A power supply control circuit includes: a power supply unit that outputs the DC voltage for the load operation; a first switch of which opening/closing is controlled by applying the DC voltage from the power supply unit; a second switch which is manually operated to switch over the power supply; and a control unit. The second switch achieves a first state when not manually operated, and achieves a second state when manually operated. The control unit closes the first switch, if the second switch is changed to the second state and thereafter changed to the first state, when the second switch is in the first state and the DC voltage output from the power supply unit is not less than a predetermined value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.