Image forming apparatus and method that charges latent image carrier
US8175498B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 1, 2009 |
| Grant date | May 8, 2012 |
| Priority date | — |
| Expiry date | Oct 30, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/0619
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An image forming apparatus includes: a latent image carrier; a first charging unit which charges the latent image carrier; a second charging unit which supplies a charge having a reverse polarity of the charged polarity of the toner; a toner carrying roller which carries a toner layer containing both a contact toner which comes in direct contact with the surface of the toner carrying roller and a non-contact toner which comes in contact with the contact toner and does not come in contact with the surface of the toner carrying roller; an electric field forming unit which develops the electrostatic latent image by the toner by generating an alternate electric field as a toner fly electric field between the latent image carrier and the toner carrying roller; and a transfer unit which transfers a toner image formed by developing the electrostatic latent image to a transfer medium.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.