Image forming apparatus with bias means for preventing toner particles from clouding optical components
US5398099A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 23, 1993 |
| Grant date | Mar 14, 1995 |
| Priority date | — |
| Expiry date | Mar 23, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/0435
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An image forming apparatus includes a conductive transparent member arranged between a photoconductive drum and a laser optical system for exposing the drum. The transparent member is electrically connected to a bias voltage power supply. In reversal development, the bias voltage power supply supplies the transparent member with a voltage ranging from a charging voltage to a developing voltage so as to generate an electric field between the transparent member and the drum. In normal development, the power supply supplies the transparent member with a voltage ranging from the developing voltage to ground so as also to generate an electric field between the transparent member and the drum.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.