Image forming apparatus
US11835912B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 16, 2022 |
| Grant date | Dec 5, 2023 |
| Priority date | — |
| Expiry date | Nov 16, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/80
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An image forming apparatus includes a transfer portion, a fixing portion to fix the toner image onto the sheet, and a charge adjusting portion. The charge adjusting portion adjusts charge to the sheet on which the toner image is fixed. The charge adjusting portion is provided with first and second rollers, a supplying rotatable member and a power source. The first roller includes a shaft having conductivity and an outer circumferential portion including an ion conductive material formed on an outer periphery of the shaft, and is electrically floating. The second roller is disposed so as to nip the sheet between itself and the first roller. The supplying rotatable member is in contact with the first roller and supplies a current to the first roller. The power source applies a voltage of one polarity of a positive polarity and a negative polarity to the supplying rotatable member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.