Power supply module and image forming apparatus including same
US8891996B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 19, 2012 |
| Grant date | Nov 18, 2014 |
| Priority date | — |
| Expiry date | Oct 18, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/1675
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An image forming apparatus includes an image bearing member, a transfer unit, a control circuit board, and a power supply module detachably attachable relative to the image forming apparatus. The image bearing member bears a toner image on a surface thereof. The transfer unit includes a transfer device to transfer the toner image onto a recording medium and is disposed opposite the image bearing member. The control circuit board controls the transfer unit. The power supply module is disposed in the transfer unit and includes a power source to apply, between the image bearing member and the transfer device, an AC-DC superimposed bias in which an alternating voltage (AC) is superimposed on a direct current (DC) voltage to form a transfer electric field to transfer the toner image from the image bearing member onto the recording medium.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.