Image forming apparatus having toner density control
US8989639B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 18, 2011 |
| Grant date | Mar 24, 2015 |
| Priority date | — |
| Expiry date | Nov 18, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/325
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An image forming apparatus includes a toner carrying roller for carrying a toner, an image carrying member, contacting the toner on the toner carrying roller, on which a toner image is to be formed with the toner, and an electrode portion provided at an opposing position in which the electrode portion opposes the toner carrying roller via the image carrying member interposed therebetween. The toner image is formed on the image carrying member by changing a value of a voltage, on the basis of image information, applied to the electrode portion, and the toner carried on the toner carrying roller and the image carrying member contact each other in a toner contact area. The toner is moved between the toner carrying roller and the image carrying member in a toner movement area by changing the value of the voltage applied to the electrode portion, and the toner movement area is present downstream of the toner contact area with respect to a movement direction of the image carrying member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.