Image forming apparatus, image forming process, and process cartridge
US7194224B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 27, 2004 |
| Grant date | Mar 20, 2007 |
| Priority date | — |
| Expiry date | Nov 4, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/02
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present invention relates to an image forming apparatus, an image forming process and a process cartridge, in which the image quality and the durability of the photoconductor may be enhanced, images may be formed stably even after the repeated usages, and higher quality and higher stability of images may be established due to the superimposed alternating voltage as well as decrease of the charging hazard on the photoconductor. Specifically, the image forming apparatus according to the present invention comprises a photoconductor, latent electrostatic image forming unit, developing unit a transferring unit, and fixing unit, wherein the charging member is of roller shape disposed proximate to the photoconductor, the photoconductor is charged at the charging nip portion formed between the photoconductor and the charging member, in a condition that satisfies the following Equation:4.4×1014≦[(Number of Charged Particles)÷(Circumferential length of the photoconductor)]≦17.7×1014
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.